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No commits in common. "master" and "v1.0" have entirely different histories.
master ... v1.0

116 changed files with 10050 additions and 8851 deletions

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@ -1,37 +0,0 @@
name: Go
on:
push:
branches: [ master ]
pull_request:
branches: [ master ]
jobs:
build:
runs-on: ubuntu-latest
steps:
- name: Checkout
uses: actions/checkout@v4
- name: Set up Go
uses: actions/setup-go@v4
with:
go-version: 1.22.x
- name: Build linux
run: make linux
- name: Build macos
run: make macos
- name: Test
run: make test
- name: Lint
run: make lint
- name: retrieve all tags
run: git fetch --prune --unshallow --tags
- name: Print changes since last version
run: git log $(git describe --tags --abbrev=0)..HEAD --no-merges --oneline

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@ -1,62 +0,0 @@
name: release
on:
push:
tags:
- "*.*.*"
jobs:
build:
runs-on: ubuntu-latest
steps:
- name: Checkout
uses: actions/checkout@v4
- name: Set up Go
uses: actions/setup-go@v4
with:
go-version: 1.22.x
- name: Build linux
run: make linux
- name: Build macos
run: make macos
- name: Test
run: make test
- name: Lint
run: make lint
- name: Zip macos
run: zip -r reflector_darwin_amd64.zip ./dist/darwin_amd64
- name: Zip linux
run: zip -r reflector_linux_amd64.zip ./dist/linux_amd64
- name: retrieve all tags
run: git fetch --prune --unshallow --tags
- name: Generate Changelog
run: git log $(git describe --tags --abbrev=0 @^)..@ --no-merges --oneline > ${{ github.workspace }}-CHANGELOG.txt
- name: upload to github releases
uses: softprops/action-gh-release@v1
with:
files: |
./reflector_linux_amd64.zip
./reflector_darwin_amd64.zip
body_path: ${{ github.workspace }}-CHANGELOG.txt
# - name: Login to DockerHub
# uses: docker/login-action@v2
# with:
# username: ${{ secrets.DOCKERHUB_USERNAME }}
# password: ${{ secrets.DOCKERHUB_TOKEN }}
# - name: Generate docker image
# run: make image
# - name: Docker push
# run: make publish_image

4
.gitignore vendored
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@ -1,4 +1,4 @@
/vendor
/blobs
/config.json*
/dist
/bin
/prism-bin

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@ -1,4 +0,0 @@
{
"Disable": ["golint"],
"Vendor": true
}

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@ -1,45 +1,59 @@
os: linux
dist: bionic
dist: trusty
language: go
go:
- 1.22.x
cache:
directories:
- $HOME/.cache/go-build
- $HOME/gopath/pkg/mod
# Only the last two Go releases are supported by the Go team with security
# updates. Any versions older than that should be considered deprecated.
# Don't bother testing with them. tip builds your code with the latest
# development version of Go. This can warn you that your code will break
# in the next version of Go. Don't worry! Later we declare that test runs
# are allowed to fail on Go tip.
matrix:
include:
- go: 1.10.2
env: DEPLOY=true # dont deploy tip build
- go: master
env: DEPLOY=false # dont deploy tip build
allow_failures:
- go: master
# Don't wait for tip tests to finish. Mark the test run green if the
# tests pass on the stable versions of Go.
fast_finish: true
# Don't email me the results of the test runs.
notifications:
email: false
# Skip the install step. Don't `go get` dependencies. Only build with the code in vendor/
#install: true
# Skip the install step. Don't `go get` dependencies. Only build with the
# code in vendor/
install: true
# Anything in before_script that returns a nonzero exit code will
# flunk the build and immediately stop. It's sorta like having
# set -e enabled in bash.
before_script:
# All the .go files, excluding vendor/ and model (auto generated)
- GO_FILES=$(find . -iname '*.go' ! -iname '*_test.go' -type f | grep -v /vendor/ ) #i wish we were this crazy :p
- go install golang.org/x/tools/cmd/goimports # Used in build script for generated files
# - go get github.com/golang/lint/golint # Linter
# - go get honnef.co/go/tools/cmd/megacheck # Badass static analyzer/linter
- go install github.com/fzipp/gocyclo/cmd/gocyclo@latest # Check against high complexity
- go install github.com/mdempsky/unconvert@latest # Identifies unnecessary type conversions
- go install github.com/kisielk/errcheck@latest # Checks for unhandled errors
- go install gitlab.com/opennota/check/cmd/varcheck@latest # Checks for unused vars
- go install gitlab.com/opennota/check/cmd/structcheck@latest # Checks for unused fields in structs
- GO_FILES=$(find . -iname '*.go' ! -iname '*_test.go' -type f | grep -v /vendor/ )
- go get golang.org/x/tools/cmd/goimports # Used in build script for generated files
- go get github.com/golang/lint/golint # Linter
- go get honnef.co/go/tools/cmd/megacheck # Badass static analyzer/linter
- go get github.com/jgautheron/gocyclo # Check against high complexity
- go get github.com/mdempsky/unconvert # Identifies unnecessary type conversions
- go get github.com/kisielk/errcheck # Checks for unhandled errors
- go get github.com/opennota/check/cmd/varcheck # Checks for unused vars
- go get github.com/opennota/check/cmd/structcheck # Checks for unused fields in structs
# script always run to completion (set +e). All of these code checks are must haves
# in a modern Go project.
script:
# Build Prism successfully
- make
# Fail if a .go file hasn't been formatted with gofmt
- for i in $GO_FILES; do test -z $(gofmt -s -l $i); done
- test -z $(gofmt -s -l $GO_FILES)
# Run unit tests
- make test
- go test ./...
# Checks for unused vars and fields on structs
- varcheck ./...
- structcheck ./...
@ -48,33 +62,21 @@ script:
# forbid code with huge functions
#- gocyclo -ignore "_test.go" -avg -over 19 $GO_FILES
# checks for unhandled errors
# - errcheck ./... # COMMENTED OUT UNTIL https://github.com/kisielk/errcheck/issues/155 is fixed
- errcheck ./...
# "go vet on steroids" + linter - ignore autogen code
# - megacheck -simple.exit-non-zero=true ./... # DISABLED UNTIL https://github.com/dominikh/go-tools/issues/328 is fixed
- megacheck -simple.exit-non-zero=true ./...
# check for unnecessary conversions - ignore autogen code
# - unconvert ./... # SEEMS TO BE BROKEN WITH GO MODULES
- unconvert ./...
# one last linter - ignore autogen code
#- golint -set_exit_status $(go list ./... | grep -v /vendor/ )
# Finally, build the binary
- make linux
deploy:
- provider: s3
local_dir: ./dist/linux_amd64
- provider: releases
file: prism-bin
skip_cleanup: true
on:
repo: lbryio/reflector.go
access_key_id:
secure: "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"
secret_access_key:
secure: "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"
bucket: "lbry-reflector-binary"
# - provider: releases
# file: ./bin/prism-bin
# skip_cleanup: true
# on:
# repo: lbryio/reflector.go
# tags: true
# api_key:
# secure: 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
tags: true
condition: "$DEPLOY = true"
api_key:
secure: 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@ -1,9 +0,0 @@
FROM alpine
EXPOSE 8080
RUN mkdir /app
WORKDIR /app
COPY dist/linux_amd64/prism-bin ./prism
RUN chmod +x prism
ENTRYPOINT [ "/app/prism" ]

435
Gopkg.lock generated Normal file
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@ -0,0 +1,435 @@
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version = "v1.0.8"
[[projects]]
digest = "1:ba3b2eb0ae6fd3deac4386c02fe9d2279c9520738eb9db2f0667e74d5c7a0a61"
name = "github.com/nlopes/slack"
packages = ["."]
pruneopts = ""
revision = "0db1d5eae1116bf7c8ed96c6749acfbf4daaec3e"
version = "v0.3.0"
[[projects]]
branch = "master"
digest = "1:af967afd3cbc6b0145937f4dcab78bcd93e7b2f2b618fb2bcaf7069ad5c638fa"
name = "github.com/phayes/freeport"
packages = ["."]
pruneopts = ""
revision = "e27662a4a9d6b2083dfd7e7b5d0e30985daca925"
[[projects]]
branch = "master"
digest = "1:6ee36f2cea425916d81fdaaf983469fc18f91b3cf090cfe90fa0a9d85b8bfab7"
name = "github.com/sean-/seed"
packages = ["."]
pruneopts = ""
revision = "e2103e2c35297fb7e17febb81e49b312087a2372"
[[projects]]
branch = "master"
digest = "1:65d0c541c450f6f8bb9654a3f1938407a835bf41faade00bb0fa1416de215d00"
name = "github.com/sebdah/goldie"
packages = ["."]
pruneopts = ""
revision = "8784dd1ab561dcf43d141f6678e9e41f3d0dff55"
[[projects]]
branch = "master"
digest = "1:1747c026a603e3c9f33f238e1d1390df2c8f48876b6bcb7a9c52c7b479e040f4"
name = "github.com/sirupsen/logrus"
packages = ["."]
pruneopts = ""
revision = "d329d24db4313262a3b0a24d8aeb1dc4bd294fb0"
[[projects]]
digest = "1:d0b38ba6da419a6d4380700218eeec8623841d44a856bb57369c172fbf692ab4"
name = "github.com/spf13/cast"
packages = ["."]
pruneopts = ""
revision = "8965335b8c7107321228e3e3702cab9832751bac"
version = "v1.2.0"
[[projects]]
branch = "master"
digest = "1:b5212c335a490d958a6b1b5b48901b46e682b82fa9af3a238fa88df6eaa60873"
name = "github.com/spf13/cobra"
packages = ["."]
pruneopts = ""
revision = "7c4570c3ebeb8129a1f7456d0908a8b676b6f9f1"
[[projects]]
digest = "1:8e243c568f36b09031ec18dff5f7d2769dcf5ca4d624ea511c8e3197dc3d352d"
name = "github.com/spf13/pflag"
packages = ["."]
pruneopts = ""
revision = "583c0c0531f06d5278b7d917446061adc344b5cd"
version = "v1.0.1"
[[projects]]
branch = "master"
digest = "1:f05efcac20bea32e1fcefde9a3cbefb07e02053666c4a67681ad18c8efc682d3"
name = "github.com/uber-go/atomic"
packages = ["."]
pruneopts = ""
revision = "ca680462431f8c7f96686d91b1d9e5203c4b075b"
[[projects]]
branch = "master"
digest = "1:16b935c128f178647036048862a21e8bfd66d1e83fb19787a8b356bdcf0de899"
name = "golang.org/x/crypto"
packages = [
"ed25519",
"ed25519/internal/edwards25519",
"ripemd160",
"sha3",
"ssh/terminal",
]
pruneopts = ""
revision = "f027049dab0ad238e394a753dba2d14753473a04"
[[projects]]
branch = "master"
digest = "1:15f2fc8cc79d90b0d4d712f04bd3eb3a3856ff3dd6b610a1425113ead3501610"
name = "golang.org/x/net"
packages = [
"bpf",
"context",
"internal/iana",
"internal/socket",
"ipv4",
"ipv6",
]
pruneopts = ""
revision = "19491d39cadbd9cd33f26ca22cc89ba4ba38251c"
[[projects]]
branch = "master"
digest = "1:e8f649ecfae7835a0a27ef39fd2180f6d3c12bc422e2ae55cd611f0b283b3e6e"
name = "golang.org/x/sys"
packages = [
"unix",
"windows",
]
pruneopts = ""
revision = "0718ef2ef256118d53a01598f179001ec2af7626"
[[projects]]
branch = "master"
digest = "1:55a681cb66f28755765fa5fa5104cbd8dc85c55c02d206f9f89566451e3fe1aa"
name = "golang.org/x/time"
packages = ["rate"]
pruneopts = ""
revision = "fbb02b2291d28baffd63558aa44b4b56f178d650"
[[projects]]
digest = "1:eede11c81b63c8f6fd06ef24ba0a640dc077196ec9b7a58ecde03c82eee2f151"
name = "google.golang.org/appengine"
packages = ["cloudsql"]
pruneopts = ""
revision = "b1f26356af11148e710935ed1ac8a7f5702c7612"
version = "v1.1.0"
[[projects]]
digest = "1:05eca53b271663de74078b5484b1995a8d56668a51434a698dc5d0863035d575"
name = "gopkg.in/nullbio/null.v6"
packages = ["convert"]
pruneopts = ""
revision = "40264a2e6b7972d183906cf17663983c23231c82"
version = "v6.3"
[solve-meta]
analyzer-name = "dep"
analyzer-version = 1
input-imports = [
"github.com/aws/aws-sdk-go/aws",
"github.com/aws/aws-sdk-go/aws/awserr",
"github.com/aws/aws-sdk-go/aws/credentials",
"github.com/aws/aws-sdk-go/aws/session",
"github.com/aws/aws-sdk-go/service/s3",
"github.com/aws/aws-sdk-go/service/s3/s3manager",
"github.com/davecgh/go-spew/spew",
"github.com/go-sql-driver/mysql",
"github.com/gorilla/mux",
"github.com/gorilla/rpc/v2",
"github.com/gorilla/rpc/v2/json",
"github.com/hashicorp/serf/serf",
"github.com/johntdyer/slackrus",
"github.com/lbryio/errors.go",
"github.com/lbryio/lbry.go/crypto",
"github.com/lbryio/lbry.go/errors",
"github.com/lbryio/lbry.go/querytools",
"github.com/lbryio/lbry.go/stop",
"github.com/lbryio/lbry.go/util",
"github.com/lyoshenka/bencode",
"github.com/phayes/freeport",
"github.com/sebdah/goldie",
"github.com/sirupsen/logrus",
"github.com/spf13/cast",
"github.com/spf13/cobra",
"github.com/uber-go/atomic",
"golang.org/x/time/rate",
]
solver-name = "gps-cdcl"
solver-version = 1

39
Gopkg.toml Normal file
View file

@ -0,0 +1,39 @@
[[constraint]]
name = "github.com/aws/aws-sdk-go"
branch = "master"
[[constraint]]
name = "github.com/go-sql-driver/mysql"
branch = "master"
[[constraint]]
name = "github.com/hashicorp/serf"
branch = "master"
[[constraint]]
name = "github.com/lbryio/lbry.go"
branch = "master"
[[constraint]]
name = "github.com/sirupsen/logrus"
branch = "master"
[[constraint]]
name = "github.com/spf13/cobra"
branch = "master"
[[constraint]]
branch = "master"
name = "github.com/lyoshenka/bencode"
[[constraint]]
branch = "master"
name = "github.com/uber-go/atomic"
[[constraint]]
branch = "master"
name = "github.com/phayes/freeport"
[[constraint]]
branch = "master"
name = "github.com/johntdyer/slackrus"

View file

@ -1,6 +1,6 @@
The MIT License (MIT)
Copyright (c) 2016-2020 LBRY Inc
Copyright (c) 2016-2018 LBRY Inc
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish,distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

View file

@ -1,33 +1,27 @@
version := $(shell git describe --dirty --always --long --abbrev=7)
commit := $(shell git rev-parse --short HEAD)
commit_long := $(shell git rev-parse HEAD)
branch := $(shell git rev-parse --abbrev-ref HEAD)
curTime := $(shell date +%s)
BINARY=prism-bin
IMPORT_PATH = github.com/lbryio/reflector.go
LDFLAGS="-X ${IMPORT_PATH}/meta.version=$(version) -X ${IMPORT_PATH}/meta.commit=$(commit) -X ${IMPORT_PATH}/meta.commitLong=$(commit_long) -X ${IMPORT_PATH}/meta.branch=$(branch) -X '${IMPORT_PATH}/meta.Time=$(curTime)'"
DIR = $(shell cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd)
BIN_DIR = $(DIR)/dist
VENDOR_DIR = vendor
IMPORT_PATH = github.com/lbryio/reflector.go
.DEFAULT_GOAL := linux
VERSION = $(shell git --git-dir=${DIR}/.git describe --dirty --always --long --abbrev=7)
LDFLAGS = -ldflags "-X ${IMPORT_PATH}/meta.Version=${VERSION}"
.PHONY: build dep clean test
.DEFAULT_GOAL: build
build: dep
CGO_ENABLED=0 go build ${LDFLAGS} -asmflags -trimpath=${DIR} -o ${DIR}/${BINARY} main.go
dep: | $(VENDOR_DIR)
$(VENDOR_DIR):
go get github.com/golang/dep/cmd/dep && dep ensure
clean:
if [ -f ${DIR}/${BINARY} ]; then rm ${DIR}/${BINARY}; fi
.PHONY: test
test:
go test -cover -v ./...
.PHONY: lint
lint:
./scripts/lint.sh
.PHONY: linux
linux:
GOARCH=amd64 CGO_ENABLED=0 GOOS=linux go build -ldflags ${LDFLAGS} -asmflags -trimpath=${DIR} -o ${BIN_DIR}/linux_amd64/${BINARY}
.PHONY: macos
macos:
GOARCH=amd64 GOOS=darwin go build -ldflags ${LDFLAGS} -asmflags -trimpath=${DIR} -o ${BIN_DIR}/darwin_amd64/${BINARY}
.PHONY: image
image:
docker buildx build -t lbry/reflector:$(version) -t lbry/reflector:latest --platform linux/amd64 .
go test ./... -v -cover

View file

@ -1,14 +1,14 @@
package cluster
import (
"io"
"io/ioutil"
baselog "log"
"sort"
"time"
"github.com/lbryio/lbry.go/v2/extras/crypto"
"github.com/lbryio/lbry.go/v2/extras/errors"
"github.com/lbryio/lbry.go/v2/extras/stop"
"github.com/lbryio/lbry.go/crypto"
"github.com/lbryio/lbry.go/errors"
"github.com/lbryio/lbry.go/stop"
"github.com/hashicorp/serf/serf"
log "github.com/sirupsen/logrus"
@ -52,7 +52,7 @@ func (c *Cluster) Connect() error {
conf.MemberlistConfig.AdvertisePort = c.port
conf.NodeName = c.name
nullLogger := baselog.New(io.Discard, "", 0)
nullLogger := baselog.New(ioutil.Discard, "", 0)
conf.Logger = nullLogger
c.eventCh = make(chan serf.Event)

View file

@ -6,8 +6,7 @@ import (
"strconv"
"syscall"
"github.com/lbryio/lbry.go/v2/extras/crypto"
"github.com/lbryio/lbry.go/crypto"
"github.com/lbryio/reflector.go/cluster"
log "github.com/sirupsen/logrus"

View file

@ -1,55 +0,0 @@
package cmd
import (
"encoding/hex"
"fmt"
"github.com/lbryio/lbry.go/v2/schema/stake"
"github.com/davecgh/go-spew/spew"
"github.com/gogo/protobuf/jsonpb"
log "github.com/sirupsen/logrus"
"github.com/spf13/cobra"
)
func init() {
var cmd = &cobra.Command{
Use: "decode VALUE",
Short: "Decode a claim value",
Args: cobra.ExactArgs(1),
Run: decodeCmd,
}
rootCmd.AddCommand(cmd)
}
func decodeCmd(cmd *cobra.Command, args []string) {
c, err := stake.DecodeClaimHex(args[0], "")
if err != nil {
log.Fatal(err)
}
m := jsonpb.Marshaler{Indent: " "}
if stream := c.Claim.GetStream(); stream != nil {
json, err := m.MarshalToString(stream)
if err != nil {
log.Fatal(err)
}
fmt.Println(json)
fmt.Printf("SD hash as hex: %s\n", hex.EncodeToString(stream.GetSource().GetSdHash()))
} else if channel := c.Claim.GetChannel(); channel != nil {
json, err := m.MarshalToString(channel)
if err != nil {
log.Fatal(err)
}
fmt.Println(json)
} else if repost := c.Claim.GetRepost(); repost != nil {
json, err := m.MarshalToString(repost)
if err != nil {
log.Fatal(err)
}
fmt.Println(json)
} else {
spew.Dump(c)
}
}

View file

@ -1,6 +1,7 @@
package cmd
import (
"log"
"net"
"os"
"os/signal"
@ -8,16 +9,15 @@ import (
"syscall"
"time"
"github.com/lbryio/lbry.go/v2/dht"
"github.com/lbryio/lbry.go/v2/dht/bits"
"github.com/lbryio/reflector.go/dht"
"github.com/lbryio/reflector.go/dht/bits"
log "github.com/sirupsen/logrus"
"github.com/spf13/cobra"
)
var dhtNodeID string
var dhtPort int
var dhtRPCPort int
var dhtRpcPort int
var dhtSeeds []string
func init() {
@ -30,7 +30,7 @@ func init() {
}
cmd.PersistentFlags().StringVar(&dhtNodeID, "nodeID", "", "nodeID in hex")
cmd.PersistentFlags().IntVar(&dhtPort, "port", 4567, "Port to start DHT on")
cmd.PersistentFlags().IntVar(&dhtRPCPort, "rpcPort", 0, "Port to listen for rpc commands on")
cmd.PersistentFlags().IntVar(&dhtRpcPort, "rpcPort", 0, "Port to listen for rpc commands on")
cmd.PersistentFlags().StringSliceVar(&dhtSeeds, "seeds", []string{}, "Addresses of seed nodes")
rootCmd.AddCommand(cmd)
}
@ -56,7 +56,7 @@ func dhtCmd(cmd *cobra.Command, args []string) {
dhtConf := dht.NewStandardConfig()
dhtConf.Address = "0.0.0.0:" + strconv.Itoa(dhtPort)
dhtConf.RPCPort = dhtRPCPort
dhtConf.RPCPort = dhtRpcPort
if len(dhtSeeds) > 0 {
dhtConf.SeedNodes = dhtSeeds
}

View file

@ -1,80 +0,0 @@
package cmd
import (
"encoding/hex"
"os"
"time"
"github.com/lbryio/reflector.go/server/peer"
"github.com/lbryio/reflector.go/store"
"github.com/lbryio/lbry.go/v2/stream"
log "github.com/sirupsen/logrus"
"github.com/spf13/cobra"
)
func init() {
var cmd = &cobra.Command{
Use: "getstream ADDRESS:PORT SDHASH",
Short: "Get a stream from a reflector server",
Args: cobra.ExactArgs(2),
Run: getStreamCmd,
}
rootCmd.AddCommand(cmd)
}
func getStreamCmd(cmd *cobra.Command, args []string) {
addr := args[0]
sdHash := args[1]
s := store.NewCachingStore(
"getstream",
peer.NewStore(peer.StoreOpts{Address: addr}),
store.NewDiskStore("/tmp/lbry_downloaded_blobs", 2),
)
wd, err := os.Getwd()
if err != nil {
log.Fatal(err)
}
var sd stream.SDBlob
sdb, _, err := s.Get(sdHash)
if err != nil {
log.Fatal(err)
}
err = sd.FromBlob(sdb)
if err != nil {
log.Fatal(err)
}
filename := sd.SuggestedFileName
if filename == "" {
filename = "stream_" + time.Now().Format("20060102_150405")
}
f, err := os.Create(wd + "/" + filename)
if err != nil {
log.Fatal(err)
}
for i := 0; i < len(sd.BlobInfos)-1; i++ {
b, _, err := s.Get(hex.EncodeToString(sd.BlobInfos[i].BlobHash))
if err != nil {
log.Fatal(err)
}
data, err := b.Plaintext(sd.Key, sd.BlobInfos[i].IV)
if err != nil {
log.Fatal(err)
}
_, err = f.Write(data)
if err != nil {
log.Fatal(err)
}
}
}

View file

@ -1,93 +0,0 @@
package cmd
import (
"crypto/sha512"
"encoding/hex"
"os"
"path"
"runtime"
"sync/atomic"
"time"
"github.com/lbryio/reflector.go/meta"
"github.com/lbryio/reflector.go/store/speedwalk"
"github.com/lbryio/lbry.go/v2/extras/errors"
log "github.com/sirupsen/logrus"
"github.com/spf13/cobra"
)
var threads int
func init() {
var cmd = &cobra.Command{
Use: "check-integrity",
Short: "check blobs integrity for a given path",
Run: integrityCheckCmd,
}
cmd.Flags().StringVar(&diskStorePath, "store-path", "", "path of the store where all blobs are cached")
cmd.Flags().IntVar(&threads, "threads", runtime.NumCPU()-1, "number of concurrent threads to process blobs")
rootCmd.AddCommand(cmd)
}
func integrityCheckCmd(cmd *cobra.Command, args []string) {
log.Printf("reflector %s", meta.VersionString())
if diskStorePath == "" {
log.Fatal("store-path must be defined")
}
blobs, err := speedwalk.AllFiles(diskStorePath, true)
if err != nil {
log.Fatalf("error while reading blobs from disk %s", errors.FullTrace(err))
}
tasks := make(chan string, len(blobs))
done := make(chan bool)
processed := new(int32)
go produce(tasks, blobs)
cpus := runtime.NumCPU()
for i := 0; i < cpus-1; i++ {
go consume(i, tasks, done, len(blobs), processed)
}
<-done
}
func produce(tasks chan<- string, blobs []string) {
for _, b := range blobs {
tasks <- b
}
close(tasks)
}
func consume(worker int, tasks <-chan string, done chan<- bool, totalTasks int, processed *int32) {
start := time.Now()
for b := range tasks {
processedSoFar := atomic.AddInt32(processed, 1)
if worker == 0 {
remaining := int32(totalTasks) - processedSoFar
timePerBlob := time.Since(start).Microseconds() / int64(processedSoFar)
remainingTime := time.Duration(int64(remaining)*timePerBlob) * time.Microsecond
log.Infof("[T%d] %d/%d blobs processed so far. ETA: %s", worker, processedSoFar, totalTasks, remainingTime.String())
}
blobPath := path.Join(diskStorePath, b[:2], b)
blob, err := os.ReadFile(blobPath)
if err != nil {
if os.IsNotExist(err) {
continue
}
log.Errorf("[Worker %d] Error looking up blob %s: %s", worker, b, err.Error())
continue
}
hashBytes := sha512.Sum384(blob)
readHash := hex.EncodeToString(hashBytes[:])
if readHash != b {
log.Infof("[%s] found a broken blob while reading from disk. Actual hash: %s", b, readHash)
err := os.Remove(blobPath)
if err != nil {
log.Errorf("Error while deleting broken blob %s: %s", b, err.Error())
}
}
}
done <- true
}

View file

@ -7,41 +7,30 @@ import (
"syscall"
"github.com/lbryio/reflector.go/db"
"github.com/lbryio/reflector.go/server/peer"
"github.com/lbryio/reflector.go/peer"
"github.com/lbryio/reflector.go/store"
log "github.com/sirupsen/logrus"
"github.com/spf13/cobra"
)
var peerNoDB bool
func init() {
var cmd = &cobra.Command{
Use: "peer",
Short: "Run peer server",
Run: peerCmd,
}
cmd.Flags().BoolVar(&peerNoDB, "nodb", false, "Don't connect to a db and don't use a db-backed blob store")
rootCmd.AddCommand(cmd)
}
func peerCmd(cmd *cobra.Command, args []string) {
var err error
db := new(db.SQL)
err := db.Connect(globalConfig.DBConn)
checkErr(err)
s3 := store.NewS3Store(globalConfig.AwsID, globalConfig.AwsSecret, globalConfig.BucketRegion, globalConfig.BucketName, globalConfig.S3Endpoint)
peerServer := peer.NewServer(s3)
if !peerNoDB {
db := &db.SQL{
LogQueries: log.GetLevel() == log.DebugLevel,
}
err = db.Connect(globalConfig.DBConn)
checkErr(err)
combo := store.NewDBBackedStore(s3, db, false)
peerServer = peer.NewServer(combo)
}
s3 := store.NewS3BlobStore(globalConfig.AwsID, globalConfig.AwsSecret, globalConfig.BucketRegion, globalConfig.BucketName)
combo := store.NewDBBackedS3Store(s3, db)
peerServer := peer.NewServer(combo)
err = peerServer.Start(":" + strconv.Itoa(peer.DefaultPort))
if err != nil {

View file

@ -1,51 +0,0 @@
package cmd
import (
"github.com/lbryio/reflector.go/db"
"github.com/lbryio/reflector.go/meta"
"github.com/lbryio/reflector.go/store/speedwalk"
"github.com/lbryio/lbry.go/v2/extras/errors"
log "github.com/sirupsen/logrus"
"github.com/spf13/cobra"
)
var (
diskStorePath string
)
func init() {
var cmd = &cobra.Command{
Use: "populate-db",
Short: "populate local database with blobs from a disk storage",
Run: populateDbCmd,
}
cmd.Flags().StringVar(&diskStorePath, "store-path", "",
"path of the store where all blobs are cached")
rootCmd.AddCommand(cmd)
}
func populateDbCmd(cmd *cobra.Command, args []string) {
log.Printf("reflector %s", meta.VersionString())
if diskStorePath == "" {
log.Fatal("store-path must be defined")
}
localDb := &db.SQL{
SoftDelete: true,
TrackAccess: db.TrackAccessBlobs,
LogQueries: log.GetLevel() == log.DebugLevel,
}
err := localDb.Connect("reflector:reflector@tcp(localhost:3306)/reflector")
if err != nil {
log.Fatal(err)
}
blobs, err := speedwalk.AllFiles(diskStorePath, true)
if err != nil {
log.Fatal(err)
}
err = localDb.AddBlobs(blobs)
if err != nil {
log.Errorf("error while storing to db: %s", errors.FullTrace(err))
}
}

View file

@ -1,65 +0,0 @@
package cmd
import (
"fmt"
"github.com/lbryio/reflector.go/publish"
"github.com/lbryio/lbry.go/v2/lbrycrd"
log "github.com/sirupsen/logrus"
"github.com/spf13/cobra"
)
func init() {
var cmd = &cobra.Command{
Use: "publish FILE",
Short: "Publish a file",
Args: cobra.ExactArgs(1),
Run: publishCmd,
}
cmd.Flags().String("name", "", "Claim name")
cmd.Flags().String("title", "", "Title of the content")
cmd.Flags().String("description", "", "Description of the content")
cmd.Flags().String("author", "", "Content author")
cmd.Flags().String("tags", "", "Comma-separated list of tags")
cmd.Flags().Int64("release-time", 0, "original public release of content, seconds since UNIX epoch")
rootCmd.AddCommand(cmd)
}
func publishCmd(cmd *cobra.Command, args []string) {
var err error
claimName := mustGetFlagString(cmd, "name")
if claimName == "" {
log.Errorln("--name required")
return
}
path := args[0]
client, err := lbrycrd.NewWithDefaultURL(nil)
checkErr(err)
tx, txid, err := publish.Publish(
client,
path,
claimName,
"bSzpgkTnAoiT2YAhUShPpfpajPESfNXVTu",
publish.Details{
Title: mustGetFlagString(cmd, "title"),
Description: mustGetFlagString(cmd, "description"),
Author: mustGetFlagString(cmd, "author"),
Tags: nil,
ReleaseTime: mustGetFlagInt64(cmd, "release-time"),
},
"reflector.lbry.com:5566",
)
checkErr(err)
decoded, err := publish.Decode(client, tx)
checkErr(err)
fmt.Printf("TX: %s\n\n", decoded)
fmt.Printf("TXID: %s\n", txid.String())
}

View file

@ -4,378 +4,44 @@ import (
"os"
"os/signal"
"strconv"
"strings"
"syscall"
"time"
"github.com/lbryio/lbry.go/v2/extras/util"
"github.com/lbryio/reflector.go/db"
"github.com/lbryio/reflector.go/internal/metrics"
"github.com/lbryio/reflector.go/meta"
"github.com/lbryio/reflector.go/reflector"
"github.com/lbryio/reflector.go/server/http"
"github.com/lbryio/reflector.go/server/http3"
"github.com/lbryio/reflector.go/server/peer"
"github.com/lbryio/reflector.go/store"
"github.com/lbryio/lbry.go/v2/extras/errors"
"github.com/lbryio/lbry.go/v2/extras/stop"
"github.com/lbryio/lbry.go/v2/stream"
"github.com/c2h5oh/datasize"
log "github.com/sirupsen/logrus"
"github.com/spf13/cobra"
)
var (
//port configuration
tcpPeerPort int
http3PeerPort int
httpPeerPort int
receiverPort int
metricsPort int
//flags configuration
disableUploads bool
disableBlocklist bool
useDB bool
//upstream configuration
upstreamReflector string
upstreamProtocol string
upstreamEdgeToken string
//downstream configuration
requestQueueSize int
//upstream edge configuration (to "cold" storage)
originEndpoint string
originEndpointFallback string
//cache configuration
diskCache string
secondaryDiskCache string
memCache int
)
var cacheManagers = []string{"localdb", "lfu", "arc", "lru", "simple"}
var cacheMangerToGcache = map[string]store.EvictionStrategy{
"lfu": store.LFU,
"arc": store.ARC,
"lru": store.LRU,
"simple": store.SIMPLE,
}
func init() {
var cmd = &cobra.Command{
Use: "reflector",
Short: "Run reflector server",
Run: reflectorCmd,
}
cmd.Flags().IntVar(&tcpPeerPort, "tcp-peer-port", 5567, "The port reflector will distribute content from for the TCP (LBRY) protocol")
cmd.Flags().IntVar(&http3PeerPort, "http3-peer-port", 5568, "The port reflector will distribute content from over HTTP3 protocol")
cmd.Flags().IntVar(&httpPeerPort, "http-peer-port", 5569, "The port reflector will distribute content from over HTTP protocol")
cmd.Flags().IntVar(&receiverPort, "receiver-port", 5566, "The port reflector will receive content from")
cmd.Flags().IntVar(&metricsPort, "metrics-port", 2112, "The port reflector will use for prometheus metrics")
cmd.Flags().BoolVar(&disableUploads, "disable-uploads", false, "Disable uploads to this reflector server")
cmd.Flags().BoolVar(&disableBlocklist, "disable-blocklist", false, "Disable blocklist watching/updating")
cmd.Flags().BoolVar(&useDB, "use-db", true, "Whether to connect to the reflector db or not")
cmd.Flags().StringVar(&upstreamReflector, "upstream-reflector", "", "host:port of a reflector server where blobs are fetched from")
cmd.Flags().StringVar(&upstreamProtocol, "upstream-protocol", "http", "protocol used to fetch blobs from another upstream reflector server (tcp/http3/http)")
cmd.Flags().StringVar(&upstreamEdgeToken, "upstream-edge-token", "", "token used to retrieve/authenticate protected content")
cmd.Flags().IntVar(&requestQueueSize, "request-queue-size", 200, "How many concurrent requests from downstream should be handled at once (the rest will wait)")
cmd.Flags().StringVar(&originEndpoint, "origin-endpoint", "", "HTTP edge endpoint for standard HTTP retrieval")
cmd.Flags().StringVar(&originEndpointFallback, "origin-endpoint-fallback", "", "HTTP edge endpoint for standard HTTP retrieval if first origin fails")
cmd.Flags().StringVar(&diskCache, "disk-cache", "100GB:/tmp/downloaded_blobs:localdb", "Where to cache blobs on the file system. format is 'sizeGB:CACHE_PATH:cachemanager' (cachemanagers: localdb/lfu/arc/lru)")
cmd.Flags().StringVar(&secondaryDiskCache, "optional-disk-cache", "", "Optional secondary file system cache for blobs. format is 'sizeGB:CACHE_PATH:cachemanager' (cachemanagers: localdb/lfu/arc/lru) (this would get hit before the one specified in disk-cache)")
cmd.Flags().IntVar(&memCache, "mem-cache", 0, "enable in-memory cache with a max size of this many blobs")
rootCmd.AddCommand(cmd)
}
func reflectorCmd(cmd *cobra.Command, args []string) {
log.Printf("reflector %s", meta.VersionString())
// the blocklist logic requires the db backed store to be the outer-most store
underlyingStore := initStores()
underlyingStoreWithCaches, cleanerStopper := initCaches(underlyingStore)
if !disableUploads {
reflectorServer := reflector.NewServer(underlyingStore, underlyingStoreWithCaches)
reflectorServer.Timeout = 3 * time.Minute
reflectorServer.EnableBlocklist = !disableBlocklist
err := reflectorServer.Start(":" + strconv.Itoa(receiverPort))
if err != nil {
log.Fatal(err)
}
defer reflectorServer.Shutdown()
}
peerServer := peer.NewServer(underlyingStoreWithCaches)
err := peerServer.Start(":" + strconv.Itoa(tcpPeerPort))
log.Printf("reflector version %s", meta.Version)
db := new(db.SQL)
err := db.Connect(globalConfig.DBConn)
if err != nil {
log.Fatal(err)
}
defer peerServer.Shutdown()
http3PeerServer := http3.NewServer(underlyingStoreWithCaches, requestQueueSize)
err = http3PeerServer.Start(":" + strconv.Itoa(http3PeerPort))
s3 := store.NewS3BlobStore(globalConfig.AwsID, globalConfig.AwsSecret, globalConfig.BucketRegion, globalConfig.BucketName)
combo := store.NewDBBackedS3Store(s3, db)
reflectorServer := reflector.NewServer(combo)
err = reflectorServer.Start(":" + strconv.Itoa(reflector.DefaultPort))
if err != nil {
log.Fatal(err)
}
defer http3PeerServer.Shutdown()
httpServer := http.NewServer(store.WithSingleFlight("sf-http", underlyingStoreWithCaches), requestQueueSize, upstreamEdgeToken)
err = httpServer.Start(":" + strconv.Itoa(httpPeerPort))
if err != nil {
log.Fatal(err)
}
defer httpServer.Shutdown()
metricsServer := metrics.NewServer(":"+strconv.Itoa(metricsPort), "/metrics")
metricsServer.Start()
defer metricsServer.Shutdown()
defer underlyingStoreWithCaches.Shutdown()
defer underlyingStore.Shutdown() //do we actually need this? Oo
interruptChan := make(chan os.Signal, 1)
signal.Notify(interruptChan, os.Interrupt, syscall.SIGTERM)
<-interruptChan
// deferred shutdowns happen now
cleanerStopper.StopAndWait()
}
func initUpstreamStore() store.BlobStore {
var s store.BlobStore
if upstreamReflector == "" {
return nil
}
switch upstreamProtocol {
case "tcp":
s = peer.NewStore(peer.StoreOpts{
Address: upstreamReflector,
Timeout: 30 * time.Second,
})
case "http3":
s = http3.NewStore(http3.StoreOpts{
Address: upstreamReflector,
Timeout: 30 * time.Second,
})
case "http":
s = store.NewHttpStore(upstreamReflector, upstreamEdgeToken)
default:
log.Fatalf("protocol is not recognized: %s", upstreamProtocol)
}
return s
}
func initEdgeStore() store.BlobStore {
var s3Store *store.S3Store
var s store.BlobStore
if conf != "none" {
s3Store = store.NewS3Store(globalConfig.AwsID, globalConfig.AwsSecret, globalConfig.BucketRegion, globalConfig.BucketName, globalConfig.S3Endpoint)
}
if originEndpointFallback != "" && originEndpoint != "" {
ittt := store.NewITTTStore(store.NewCloudFrontROStore(originEndpoint), store.NewCloudFrontROStore(originEndpointFallback))
if s3Store != nil {
s = store.NewCloudFrontRWStore(ittt, s3Store)
} else {
s = ittt
}
} else if s3Store != nil {
s = s3Store
} else {
log.Fatalf("this configuration does not include a valid upstream source")
}
return s
}
func initDBStore(s store.BlobStore) store.BlobStore {
if useDB {
dbInst := &db.SQL{
TrackAccess: db.TrackAccessStreams,
LogQueries: log.GetLevel() == log.DebugLevel,
}
err := dbInst.Connect(globalConfig.DBConn)
if err != nil {
log.Fatal(err)
}
s = store.NewDBBackedStore(s, dbInst, false)
}
return s
}
func initStores() store.BlobStore {
s := initUpstreamStore()
if s == nil {
s = initEdgeStore()
}
s = initDBStore(s)
return s
}
// initCaches returns a store wrapped with caches and a stop group to execute a clean shutdown
func initCaches(s store.BlobStore) (store.BlobStore, *stop.Group) {
stopper := stop.New()
diskStore := initDiskStore(s, diskCache, stopper)
finalStore := initDiskStore(diskStore, secondaryDiskCache, stopper)
stop.New()
if memCache > 0 {
finalStore = store.NewCachingStore(
"reflector",
finalStore,
store.NewGcacheStore("mem", store.NewMemStore(), memCache, store.LRU),
)
}
return finalStore, stopper
}
func initDiskStore(upstreamStore store.BlobStore, diskParams string, stopper *stop.Group) store.BlobStore {
diskCacheMaxSize, diskCachePath, cacheManager := diskCacheParams(diskParams)
//we are tracking blobs in memory with a 1 byte long boolean, which means that for each 2MB (a blob) we need 1Byte
// so if the underlying cache holds 10MB, 10MB/2MB=5Bytes which is also the exact count of objects to restore on startup
realCacheSize := float64(diskCacheMaxSize) / float64(stream.MaxBlobSize)
if diskCacheMaxSize == 0 {
return upstreamStore
}
err := os.MkdirAll(diskCachePath, os.ModePerm)
if err != nil {
log.Fatal(err)
}
diskStore := store.NewDiskStore(diskCachePath, 2)
var unwrappedStore store.BlobStore
cleanerStopper := stop.New(stopper)
if cacheManager == "localdb" {
localDb := &db.SQL{
SoftDelete: true,
TrackAccess: db.TrackAccessBlobs,
LogQueries: log.GetLevel() == log.DebugLevel,
}
err = localDb.Connect("reflector:reflector@tcp(localhost:3306)/reflector")
if err != nil {
log.Fatal(err)
}
unwrappedStore = store.NewDBBackedStore(diskStore, localDb, true)
go cleanOldestBlobs(int(realCacheSize), localDb, unwrappedStore, cleanerStopper)
} else {
unwrappedStore = store.NewGcacheStore("nvme", store.NewDiskStore(diskCachePath, 2), int(realCacheSize), cacheMangerToGcache[cacheManager])
}
wrapped := store.NewCachingStore(
"reflector",
upstreamStore,
unwrappedStore,
)
return wrapped
}
func diskCacheParams(diskParams string) (int, string, string) {
if diskParams == "" {
return 0, "", ""
}
parts := strings.Split(diskParams, ":")
if len(parts) != 3 {
log.Fatalf("%s does is formatted incorrectly. Expected format: 'sizeGB:CACHE_PATH:cachemanager' for example: '100GB:/tmp/downloaded_blobs:localdb'", diskParams)
}
diskCacheSize := parts[0]
path := parts[1]
cacheManager := parts[2]
if len(path) == 0 || path[0] != '/' {
log.Fatalf("disk cache paths must start with '/'")
}
if !util.InSlice(cacheManager, cacheManagers) {
log.Fatalf("specified cache manager '%s' is not supported. Use one of the following: %v", cacheManager, cacheManagers)
}
var maxSize datasize.ByteSize
err := maxSize.UnmarshalText([]byte(diskCacheSize))
if err != nil {
log.Fatal(err)
}
if maxSize <= 0 {
log.Fatal("disk cache size must be more than 0")
}
return int(maxSize), path, cacheManager
}
func cleanOldestBlobs(maxItems int, db *db.SQL, store store.BlobStore, stopper *stop.Group) {
// this is so that it runs on startup without having to wait for 10 minutes
err := doClean(maxItems, db, store, stopper)
if err != nil {
log.Error(errors.FullTrace(err))
}
const cleanupInterval = 10 * time.Minute
for {
select {
case <-stopper.Ch():
log.Infoln("stopping self cleanup")
return
case <-time.After(cleanupInterval):
err := doClean(maxItems, db, store, stopper)
if err != nil {
log.Error(errors.FullTrace(err))
}
}
}
}
func doClean(maxItems int, db *db.SQL, store store.BlobStore, stopper *stop.Group) error {
blobsCount, err := db.Count()
if err != nil {
return err
}
if blobsCount >= maxItems {
itemsToDelete := blobsCount / 10
blobs, err := db.LeastRecentlyAccessedHashes(itemsToDelete)
if err != nil {
return err
}
blobsChan := make(chan string, len(blobs))
wg := &stop.Group{}
go func() {
for _, hash := range blobs {
select {
case <-stopper.Ch():
return
default:
}
blobsChan <- hash
}
close(blobsChan)
}()
for i := 0; i < 3; i++ {
wg.Add(1)
go func() {
defer wg.Done()
for h := range blobsChan {
select {
case <-stopper.Ch():
return
default:
}
err = store.Delete(h)
if err != nil {
log.Errorf("error pruning %s: %s", h, errors.FullTrace(err))
continue
}
}
}()
}
wg.Wait()
}
return nil
reflectorServer.Shutdown()
}

View file

@ -1,50 +0,0 @@
package cmd
import (
"encoding/hex"
"encoding/json"
"fmt"
"github.com/lbryio/reflector.go/wallet"
"github.com/spf13/cobra"
)
func init() {
var cmd = &cobra.Command{
Use: "resolve ADDRESS:PORT URL",
Short: "Resolve a URL",
Args: cobra.ExactArgs(2),
Run: resolveCmd,
}
rootCmd.AddCommand(cmd)
}
func resolveCmd(cmd *cobra.Command, args []string) {
addr := args[0]
url := args[1]
node := wallet.NewNode()
defer node.Shutdown()
err := node.Connect([]string{addr}, nil)
checkErr(err)
output, err := node.Resolve(url)
checkErr(err)
claim, err := node.GetClaimInTx(hex.EncodeToString(rev(output.GetTxHash())), int(output.GetNout()))
checkErr(err)
jsonClaim, err := json.MarshalIndent(claim, "", " ")
checkErr(err)
fmt.Println(string(jsonClaim))
}
func rev(b []byte) []byte {
r := make([]byte, len(b))
for left, right := 0, len(b)-1; left < right; left, right = left+1, right-1 {
r[left], r[right] = b[right], b[left]
}
return r
}

View file

@ -2,14 +2,12 @@ package cmd
import (
"encoding/json"
"io/ioutil"
"os"
"strings"
"github.com/lbryio/reflector.go/updater"
"github.com/lbryio/lbry.go/v2/dht"
"github.com/lbryio/lbry.go/v2/extras/errors"
"github.com/lbryio/lbry.go/v2/extras/util"
"github.com/lbryio/lbry.go/errors"
"github.com/lbryio/lbry.go/util"
"github.com/lbryio/reflector.go/dht"
"github.com/johntdyer/slackrus"
"github.com/sirupsen/logrus"
@ -22,12 +20,8 @@ type Config struct {
AwsSecret string `json:"aws_secret"`
BucketRegion string `json:"bucket_region"`
BucketName string `json:"bucket_name"`
S3Endpoint string `json:"s3_endpoint"`
DBConn string `json:"db_conn"`
SlackHookURL string `json:"slack_hook_url"`
SlackChannel string `json:"slack_channel"`
UpdateBinURL string `json:"update_bin_url"`
UpdateCmd string `json:"update_cmd"`
}
var verbose []string
@ -52,7 +46,7 @@ var rootCmd = &cobra.Command{
func init() {
rootCmd.PersistentFlags().StringSliceVarP(&verbose, "verbose", "v", []string{}, "Verbose logging for specific components")
rootCmd.PersistentFlags().StringVar(&conf, "conf", "config.json", "Path to config. Use 'none' to disable")
rootCmd.PersistentFlags().StringVar(&conf, "conf", "config.json", "Path to config")
}
// Execute adds all child commands to the root command and sets flags appropriately.
@ -71,11 +65,8 @@ func preRun(cmd *cobra.Command, args []string) {
debugLogger.SetOutput(os.Stderr)
if util.InSlice(verboseAll, verbose) {
logrus.Info("global verbose logging enabled")
logrus.SetLevel(logrus.DebugLevel)
verbose = []string{verboseDHT, verboseNodeFinder}
} else if len(verbose) > 0 {
logrus.Infof("verbose logging enabled for: %s", strings.Join(verbose, ", "))
}
for _, debugType := range verbose {
@ -103,7 +94,7 @@ func preRun(cmd *cobra.Command, args []string) {
hook := &slackrus.SlackrusHook{
HookURL: globalConfig.SlackHookURL,
AcceptedLevels: slackrus.LevelThreshold(logrus.InfoLevel),
Channel: globalConfig.SlackChannel,
Channel: "#reflector-logs",
//IconEmoji: ":ghost:",
//Username: "reflector.go",
}
@ -111,14 +102,6 @@ func preRun(cmd *cobra.Command, args []string) {
logrus.AddHook(hook)
debugLogger.AddHook(hook)
}
if globalConfig.UpdateBinURL != "" {
if globalConfig.UpdateCmd == "" {
logrus.Warnln("update_cmd is empty in conf file")
}
logrus.Println("starting update checker")
go updater.Run(globalConfig.UpdateBinURL, globalConfig.UpdateCmd)
}
}
func checkErr(err error) {
@ -142,32 +125,14 @@ func argFuncs(funcs ...cobra.PositionalArgs) cobra.PositionalArgs {
func loadConfig(path string) (Config, error) {
var c Config
raw, err := os.ReadFile(path)
raw, err := ioutil.ReadFile(path)
if err != nil {
if os.IsNotExist(err) {
return c, errors.Err("config file not found")
}
return c, errors.Err(err)
return c, err
}
err = json.Unmarshal(raw, &c)
return c, errors.Err(err)
return c, err
}
func mustGetFlagString(cmd *cobra.Command, name string) string {
v, err := cmd.Flags().GetString(name)
checkErr(err)
return v
}
func mustGetFlagInt64(cmd *cobra.Command, name string) int64 {
v, err := cmd.Flags().GetInt64(name)
checkErr(err)
return v
}
//func mustGetFlagBool(cmd *cobra.Command, name string) bool {
// v, err := cmd.Flags().GetBool(name)
// checkErr(err)
// return v
//}

View file

@ -1,158 +0,0 @@
package cmd
import (
"encoding/hex"
"encoding/json"
"fmt"
"io"
"os"
"os/signal"
"path"
"syscall"
"github.com/lbryio/reflector.go/reflector"
"github.com/lbryio/lbry.go/v2/extras/errors"
"github.com/lbryio/lbry.go/v2/stream"
"github.com/spf13/cobra"
)
func init() {
var cmd = &cobra.Command{
Use: "send ADDRESS:PORT PATH",
Short: "Send a file to a reflector",
Args: cobra.ExactArgs(2),
Run: sendCmd,
}
cmd.PersistentFlags().String("sd-cache", "", "path to dir where sd blobs will be cached")
rootCmd.AddCommand(cmd)
}
// todo: if retrying a large file is slow, we can add the ability to seek ahead in the file so we're not
// re-uploading blobs that already exist
var hackyReflector reflector.Client
func sendCmd(cmd *cobra.Command, args []string) {
reflectorAddress := args[0]
err := hackyReflector.Connect(reflectorAddress)
checkErr(err)
defer func() { _ = hackyReflector.Close() }()
filePath := args[1]
file, err := os.Open(filePath)
checkErr(err)
defer func() { _ = file.Close() }()
sdCachePath := ""
sdCacheDir := mustGetFlagString(cmd, "sd-cache")
if sdCacheDir != "" {
if _, err := os.Stat(sdCacheDir); os.IsNotExist(err) {
err = os.MkdirAll(sdCacheDir, 0777)
checkErr(err)
}
sdCachePath = path.Join(sdCacheDir, filePath+".sdblob")
}
var enc *stream.Encoder
if sdCachePath != "" {
if _, err := os.Stat(sdCachePath); !os.IsNotExist(err) {
sdBlob, err := os.ReadFile(sdCachePath)
checkErr(err)
cachedSDBlob := &stream.SDBlob{}
err = cachedSDBlob.FromBlob(sdBlob)
checkErr(err)
enc = stream.NewEncoderFromSD(file, cachedSDBlob)
}
}
if enc == nil {
enc = stream.NewEncoder(file)
}
exitCode := 0
var killed bool
interruptChan := make(chan os.Signal, 1)
signal.Notify(interruptChan, os.Interrupt, syscall.SIGTERM)
go func() {
sig := <-interruptChan
fmt.Printf("caught %s, exiting...\n", sig.String())
killed = true
exitCode = 1
}()
for {
if killed {
break
}
b, err := enc.Next()
if errors.Is(err, io.EOF) {
break
}
if err != nil {
fmt.Printf("error reading next blob: %v\n", err)
exitCode = 1
break
}
err = hackyReflect(b, false)
if err != nil {
fmt.Printf("error reflecting blob %s: %v\n", b.HashHex()[:8], err)
exitCode = 1
break
}
}
sd := enc.SDBlob()
//sd.StreamName = filepath.Base(filePath)
//sd.SuggestedFileName = filepath.Base(filePath)
err = os.WriteFile(sdCachePath, sd.ToBlob(), 0666)
if err != nil {
fmt.Printf("error saving sd blob: %v\n", err)
fmt.Println(sd.ToJson())
exitCode = 1
}
if killed {
os.Exit(exitCode)
}
if reflectorAddress != "" {
err = hackyReflect(sd.ToBlob(), true)
if err != nil {
fmt.Printf("error reflecting sd blob %s: %v\n", sd.HashHex()[:8], err)
exitCode = 1
}
}
ret := struct {
SDHash string `json:"sd_hash"`
SourceHash string `json:"source_hash"`
}{
SDHash: sd.HashHex(),
SourceHash: hex.EncodeToString(enc.SourceHash()),
}
j, err := json.MarshalIndent(ret, "", " ")
checkErr(err)
fmt.Println(string(j))
os.Exit(exitCode)
}
func hackyReflect(b stream.Blob, sd bool) error {
var err error
if sd {
err = hackyReflector.SendSDBlob(b)
} else {
err = hackyReflector.SendBlob(b)
}
if errors.Is(err, reflector.ErrBlobExists) {
//fmt.Printf("%s already reflected\n", b.HashHex()[:8])
return nil
}
return err
}

View file

@ -1,70 +0,0 @@
package cmd
import (
"crypto/rand"
"os"
"github.com/lbryio/reflector.go/reflector"
"github.com/lbryio/lbry.go/v2/stream"
log "github.com/sirupsen/logrus"
"github.com/spf13/cobra"
)
func init() {
var cmd = &cobra.Command{
Use: "sendblob ADDRESS:PORT [PATH]",
Short: "Send a random blob to a reflector server",
Args: cobra.RangeArgs(1, 2),
Run: sendBlobCmd,
}
rootCmd.AddCommand(cmd)
}
func sendBlobCmd(cmd *cobra.Command, args []string) {
addr := args[0]
var path string
if len(args) >= 2 {
path = args[1]
}
c := reflector.Client{}
err := c.Connect(addr)
if err != nil {
log.Fatal("error connecting client to server: ", err)
}
if path == "" {
blob := make(stream.Blob, 1024)
_, err = rand.Read(blob)
if err != nil {
log.Fatal("failed to make random blob: ", err)
}
err = c.SendBlob(blob)
if err != nil {
log.Error(err)
}
return
}
file, err := os.Open(path)
checkErr(err)
defer func() { _ = file.Close() }()
s, err := stream.New(file)
checkErr(err)
sdBlob := &stream.SDBlob{}
err = sdBlob.FromBlob(s[0])
checkErr(err)
for i, b := range s {
if i == 0 {
err = c.SendSDBlob(b)
} else {
err = c.SendBlob(b)
}
checkErr(err)
}
}

View file

@ -9,14 +9,13 @@ import (
"github.com/lbryio/reflector.go/cluster"
"github.com/lbryio/reflector.go/db"
"github.com/lbryio/reflector.go/dht"
"github.com/lbryio/reflector.go/dht/bits"
"github.com/lbryio/reflector.go/peer"
"github.com/lbryio/reflector.go/prism"
"github.com/lbryio/reflector.go/reflector"
"github.com/lbryio/reflector.go/server/peer"
"github.com/lbryio/reflector.go/store"
"github.com/lbryio/lbry.go/v2/dht"
"github.com/lbryio/lbry.go/v2/dht/bits"
log "github.com/sirupsen/logrus"
"github.com/spf13/cobra"
)
@ -53,13 +52,11 @@ func init() {
}
func startCmd(cmd *cobra.Command, args []string) {
db := &db.SQL{
LogQueries: log.GetLevel() == log.DebugLevel,
}
db := new(db.SQL)
err := db.Connect(globalConfig.DBConn)
checkErr(err)
s3 := store.NewS3Store(globalConfig.AwsID, globalConfig.AwsSecret, globalConfig.BucketRegion, globalConfig.BucketName, globalConfig.S3Endpoint)
comboStore := store.NewDBBackedStore(s3, db, false)
s3 := store.NewS3BlobStore(globalConfig.AwsID, globalConfig.AwsSecret, globalConfig.BucketRegion, globalConfig.BucketName)
comboStore := store.NewDBBackedS3Store(s3, db)
conf := prism.DefaultConf()

View file

@ -1,58 +0,0 @@
package cmd
import (
"fmt"
"os"
"os/signal"
"strconv"
"syscall"
"time"
"github.com/lbryio/reflector.go/meta"
"github.com/lbryio/reflector.go/reflector"
"github.com/lbryio/reflector.go/server/peer"
"github.com/lbryio/reflector.go/store"
log "github.com/sirupsen/logrus"
"github.com/spf13/cobra"
)
func init() {
var cmd = &cobra.Command{
Use: "test",
Short: "Test things",
Run: testCmd,
}
rootCmd.AddCommand(cmd)
}
func testCmd(cmd *cobra.Command, args []string) {
log.Printf("reflector %s", meta.VersionString())
memStore := store.NewMemStore()
reflectorServer := reflector.NewServer(memStore, memStore)
reflectorServer.Timeout = 3 * time.Minute
err := reflectorServer.Start(":" + strconv.Itoa(reflector.DefaultPort))
if err != nil {
log.Fatal(err)
}
peerServer := peer.NewServer(memStore)
err = peerServer.Start(":" + strconv.Itoa(reflector.DefaultPort+1))
if err != nil {
log.Fatal(err)
}
interruptChan := make(chan os.Signal, 1)
signal.Notify(interruptChan, os.Interrupt, syscall.SIGTERM)
<-interruptChan
peerServer.Shutdown()
reflectorServer.Shutdown()
fmt.Println("Blobs in store")
for hash, blob := range memStore.Debug() {
fmt.Printf("%s: %d bytes\n", hash, len(blob))
}
}

View file

@ -1,21 +1,44 @@
package cmd
import (
"encoding/json"
"io/ioutil"
"os"
"os/signal"
"path"
"sync"
"syscall"
"time"
"github.com/lbryio/reflector.go/db"
"github.com/lbryio/reflector.go/reflector"
"github.com/lbryio/reflector.go/peer"
"github.com/lbryio/reflector.go/store"
"github.com/lbryio/lbry.go/stop"
log "github.com/sirupsen/logrus"
"github.com/spf13/cobra"
)
var uploadWorkers int
var uploadSkipExistsCheck bool
var uploadDeleteBlobsAfterUpload bool
const (
sdInc = 1
blobInc = 2
errInc = 3
)
type uploaderParams struct {
workerWG *sync.WaitGroup
counterWG *sync.WaitGroup
stopper *stop.Group
pathChan chan string
countChan chan int
sdCount int
blobCount int
errCount int
}
func init() {
var cmd = &cobra.Command{
@ -26,30 +49,220 @@ func init() {
}
cmd.PersistentFlags().IntVar(&uploadWorkers, "workers", 1, "How many worker threads to run at once")
cmd.PersistentFlags().BoolVar(&uploadSkipExistsCheck, "skipExistsCheck", false, "Dont check if blobs exist before uploading")
cmd.PersistentFlags().BoolVar(&uploadDeleteBlobsAfterUpload, "deleteBlobsAfterUpload", false, "Delete blobs after uploading them")
rootCmd.AddCommand(cmd)
}
func uploadCmd(cmd *cobra.Command, args []string) {
db := &db.SQL{
LogQueries: log.GetLevel() == log.DebugLevel,
}
startTime := time.Now()
db := new(db.SQL)
err := db.Connect(globalConfig.DBConn)
checkErr(err)
st := store.NewDBBackedStore(
store.NewS3Store(globalConfig.AwsID, globalConfig.AwsSecret, globalConfig.BucketRegion, globalConfig.BucketName, globalConfig.S3Endpoint),
db, false)
params := uploaderParams{
workerWG: &sync.WaitGroup{},
counterWG: &sync.WaitGroup{},
pathChan: make(chan string),
countChan: make(chan int),
stopper: stop.New()}
uploader := reflector.NewUploader(db, st, uploadWorkers, uploadSkipExistsCheck, uploadDeleteBlobsAfterUpload)
setInterrupt(params.stopper)
paths, err := getPaths(args[0])
checkErr(err)
totalCount := len(paths)
hashes := make([]string, len(paths))
for i, p := range paths {
hashes[i] = path.Base(p)
}
log.Println("checking for existing blobs")
exists := make(map[string]bool)
if !uploadSkipExistsCheck {
exists, err = db.HasBlobs(hashes)
checkErr(err)
}
existsCount := len(exists)
log.Printf("%d new blobs to upload", totalCount-existsCount)
startUploadWorkers(&params)
params.counterWG.Add(1)
go func() {
defer params.counterWG.Done()
runCountReceiver(&params, startTime, totalCount, existsCount)
}()
Upload:
for _, f := range paths {
if exists[path.Base(f)] {
continue
}
select {
case params.pathChan <- f:
case <-params.stopper.Ch():
log.Warnln("Caught interrupt, quitting at first opportunity...")
break Upload
}
}
close(params.pathChan)
params.workerWG.Wait()
close(params.countChan)
params.counterWG.Wait()
params.stopper.Stop()
log.Println("SUMMARY")
log.Printf("%d blobs total", totalCount)
log.Printf("%d SD blobs uploaded", params.sdCount)
log.Printf("%d content blobs uploaded", params.blobCount)
log.Printf("%d blobs already stored", existsCount)
log.Printf("%d errors encountered", params.errCount)
}
func isJSON(data []byte) bool {
var js json.RawMessage
return json.Unmarshal(data, &js) == nil
}
func newBlobStore() *store.DBBackedS3Store {
db := new(db.SQL)
err := db.Connect(globalConfig.DBConn)
checkErr(err)
s3 := store.NewS3BlobStore(globalConfig.AwsID, globalConfig.AwsSecret, globalConfig.BucketRegion, globalConfig.BucketName)
return store.NewDBBackedS3Store(s3, db)
}
func setInterrupt(stopper *stop.Group) {
interruptChan := make(chan os.Signal, 1)
signal.Notify(interruptChan, os.Interrupt, syscall.SIGTERM)
go func() {
<-interruptChan
uploader.Stop()
stopper.Stop()
}()
err = uploader.Upload(args[0])
checkErr(err)
}
func startUploadWorkers(params *uploaderParams) {
for i := 0; i < uploadWorkers; i++ {
params.workerWG.Add(1)
go func(i int) {
defer params.workerWG.Done()
defer func(i int) {
log.Printf("worker %d quitting", i)
}(i)
blobStore := newBlobStore()
launchFileUploader(params, blobStore, i)
}(i)
}
}
func launchFileUploader(params *uploaderParams, blobStore *store.DBBackedS3Store, worker int) {
for {
select {
case <-params.stopper.Ch():
return
case filepath, ok := <-params.pathChan:
if !ok {
return
}
blob, err := ioutil.ReadFile(filepath)
checkErr(err)
hash := peer.GetBlobHash(blob)
if hash != path.Base(filepath) {
log.Errorf("worker %d: file name does not match hash (%s != %s), skipping", worker, filepath, hash)
select {
case params.countChan <- errInc:
case <-params.stopper.Ch():
}
continue
}
if isJSON(blob) {
log.Printf("worker %d: PUTTING SD BLOB %s", worker, hash)
err := blobStore.PutSD(hash, blob)
if err != nil {
log.Error("PutSD Error: ", err)
}
select {
case params.countChan <- sdInc:
case <-params.stopper.Ch():
}
} else {
log.Printf("worker %d: putting %s", worker, hash)
err = blobStore.Put(hash, blob)
if err != nil {
log.Error("put Blob Error: ", err)
}
select {
case params.countChan <- blobInc:
case <-params.stopper.Ch():
}
}
}
}
}
func runCountReceiver(params *uploaderParams, startTime time.Time, totalCount int, existsCount int) {
for {
select {
case <-params.stopper.Ch():
return
case countType, ok := <-params.countChan:
if !ok {
return
}
switch countType {
case sdInc:
params.sdCount++
case blobInc:
params.blobCount++
case errInc:
params.errCount++
}
}
if (params.sdCount+params.blobCount)%50 == 0 {
log.Printf("%d of %d done (%s elapsed, %.3fs per blob)", params.sdCount+params.blobCount, totalCount-existsCount, time.Since(startTime).String(), time.Since(startTime).Seconds()/float64(params.sdCount+params.blobCount))
}
}
}
func getPaths(path string) ([]string, error) {
info, err := os.Stat(path)
if err != nil {
return nil, err
}
if info.Mode().IsRegular() {
return []string{path}, nil
}
f, err := os.Open(path)
if err != nil {
return nil, err
}
files, err := f.Readdir(-1)
if err != nil {
return nil, err
}
err = f.Close()
if err != nil {
return nil, err
}
var filenames []string
for _, file := range files {
if !file.IsDir() {
filenames = append(filenames, path+"/"+file.Name())
}
}
return filenames, nil
}

View file

@ -1,7 +1,7 @@
package cmd
import (
"fmt"
"log"
"github.com/lbryio/reflector.go/meta"
@ -18,5 +18,5 @@ func init() {
}
func versionCmd(cmd *cobra.Command, args []string) {
fmt.Println(meta.FullName())
log.Printf("version %s\n", meta.Version)
}

View file

@ -1,8 +0,0 @@
{
"aws_id": "YOUR-AWS-ID",
"aws_secret": "YOUR-AWS-SECRET",
"bucket_region": "YOUR-BUCKET-REGION",
"bucket_name": "YOUR-BUCKET-NAME",
"db_conn": "USER:PASSWORD@tcp(localhost:3306)/DBNAME",
"slack_hook_url": ""
}

664
db/db.go
View file

@ -3,21 +3,13 @@ package db
import (
"context"
"database/sql"
"fmt"
"runtime"
"strings"
"time"
"github.com/lbryio/lbry.go/v2/dht/bits"
"github.com/lbryio/lbry.go/v2/extras/errors"
qt "github.com/lbryio/lbry.go/v2/extras/query"
"github.com/lbryio/lbry.go/v2/extras/stop"
"github.com/lbryio/lbry.go/v2/stream"
"github.com/lbryio/lbry.go/errors"
"github.com/lbryio/lbry.go/querytools"
"github.com/lbryio/reflector.go/dht/bits"
"github.com/go-sql-driver/mysql"
_ "github.com/go-sql-driver/mysql" // blank import for db driver
log "github.com/sirupsen/logrus"
"github.com/volatiletech/null/v8"
"go.uber.org/atomic"
)
// SdBlob is a special blob that contains information on the rest of the blobs in the stream
@ -27,7 +19,7 @@ type SdBlob struct {
Length int `json:"length"`
BlobNum int `json:"blob_num"`
BlobHash string `json:"blob_hash,omitempty"`
IV string `json:"iv"`
Iv string `json:"iv"`
} `json:"blobs"`
StreamType string `json:"stream_type"`
Key string `json:"key"`
@ -35,38 +27,17 @@ type SdBlob struct {
StreamHash string `json:"stream_hash"`
}
type trackAccess int
const (
TrackAccessNone trackAccess = iota // Don't track accesses
TrackAccessStreams // Track accesses at the stream level
TrackAccessBlobs // Track accesses at the blob level
)
// SQL implements the DB interface
type SQL struct {
conn *sql.DB
// Track the approx last time a blob or stream was accessed
TrackAccess trackAccess
// Instead of deleting a blob, marked it as not stored in the db
SoftDelete bool
// Log executed queries. qt.InterpolateParams is cpu-heavy. This avoids that call if not needed.
LogQueries bool
}
func (s SQL) logQuery(query string, args ...interface{}) {
if !s.LogQueries {
return
}
qStr, err := qt.InterpolateParams(query, args...)
func logQuery(query string, args ...interface{}) {
s, err := querytools.InterpolateParams(query, args...)
if err != nil {
log.Errorln(err)
} else {
log.Debugln(qStr)
log.Debugln(s)
}
}
@ -82,8 +53,6 @@ func (s *SQL) Connect(dsn string) error {
return errors.Err(err)
}
s.conn.SetMaxIdleConns(12)
return errors.Err(s.conn.Ping())
}
@ -93,240 +62,55 @@ func (s *SQL) AddBlob(hash string, length int, isStored bool) error {
return errors.Err("not connected")
}
_, err := s.insertBlob(hash, length, isStored)
return err
return withTx(s.conn, func(tx *sql.Tx) error {
return addBlob(tx, hash, length, isStored)
})
}
// AddBlobs adds blobs to the database.
func (s *SQL) AddBlobs(hash []string) error {
if s.conn == nil {
return errors.Err("not connected")
}
batch := 10000
totalBlobs := int64(len(hash))
work := make(chan []string, 1000)
stopper := stop.New()
var totalInserted atomic.Int64
start := time.Now()
go func() {
for i := 0; i < len(hash); i += batch {
j := i + batch
if j > len(hash) {
j = len(hash)
}
work <- hash[i:j]
}
log.Infof("done loading %d hashes in the work queue", len(hash))
close(work)
}()
for i := 0; i < runtime.NumCPU(); i++ {
stopper.Add(1)
go func(worker int) {
log.Infof("starting worker %d", worker)
defer stopper.Done()
for hashes := range work {
inserted := totalInserted.Load()
remaining := totalBlobs - inserted
if inserted > 0 {
timePerBlob := time.Since(start).Microseconds() / inserted
remainingTime := time.Duration(remaining*timePerBlob) * time.Microsecond
log.Infof("[T%d] processing batch of %d items. ETA: %s", worker, len(hashes), remainingTime.String())
}
err := s.insertBlobs(hashes) // Process the batch.
if err != nil {
log.Errorf("error while inserting batch: %s", errors.FullTrace(err))
}
totalInserted.Add(int64(len(hashes)))
}
}(i)
}
stopper.Wait()
return nil
}
func (s *SQL) insertBlobs(hashes []string) error {
var (
q string
//args []interface{}
)
dayAgo := time.Now().AddDate(0, 0, -1).Format("2006-01-02 15:04:05")
q = "insert into blob_ (hash, is_stored, length, last_accessed_at) values "
for _, hash := range hashes {
// prepared statements slow everything down by a lot due to reflection
// for this specific instance we'll go ahead and hardcode the query to make it go faster
q += fmt.Sprintf("('%s',1,%d,'%s'),", hash, stream.MaxBlobSize, dayAgo)
//args = append(args, hash, true, stream.MaxBlobSize, dayAgo)
}
q = strings.TrimSuffix(q, ",")
_, err := s.exec(q)
if err != nil {
return err
}
return nil
}
func (s *SQL) insertBlob(hash string, length int, isStored bool) (int64, error) {
func addBlob(tx *sql.Tx, hash string, length int, isStored bool) error {
if length <= 0 {
return 0, errors.Err("length must be positive")
return errors.Err("length must be positive")
}
var (
q string
args []interface{}
err := execTx(tx,
"INSERT INTO blob_ (hash, is_stored, length) VALUES (?,?,?) ON DUPLICATE KEY UPDATE is_stored = (is_stored or VALUES(is_stored))",
[]interface{}{hash, isStored, length},
)
if s.TrackAccess == TrackAccessBlobs {
args = []interface{}{hash, isStored, length, time.Now()}
q = "INSERT INTO blob_ (hash, is_stored, length, last_accessed_at) VALUES (" + qt.Qs(len(args)) + ") ON DUPLICATE KEY UPDATE is_stored = (is_stored or VALUES(is_stored)), last_accessed_at = VALUES(last_accessed_at)"
} else {
args = []interface{}{hash, isStored, length}
q = "INSERT INTO blob_ (hash, is_stored, length) VALUES (" + qt.Qs(len(args)) + ") ON DUPLICATE KEY UPDATE is_stored = (is_stored or VALUES(is_stored))"
}
blobID, err := s.exec(q, args...)
if err != nil {
return 0, err
return errors.Err(err)
}
if blobID == 0 {
err = s.conn.QueryRow("SELECT id FROM blob_ WHERE hash = ?", hash).Scan(&blobID)
if err != nil {
return 0, errors.Err(err)
}
if blobID == 0 {
return 0, errors.Err("blob ID is 0 even after INSERTing and SELECTing")
}
if s.TrackAccess == TrackAccessBlobs {
err := s.touchBlobs([]uint64{uint64(blobID)})
if err != nil {
return 0, errors.Err(err)
}
}
}
return blobID, nil
}
func (s *SQL) insertStream(hash string, sdBlobID int64) (int64, error) {
var (
q string
args []interface{}
)
if s.TrackAccess == TrackAccessStreams {
args = []interface{}{hash, sdBlobID, time.Now()}
q = "INSERT IGNORE INTO stream (hash, sd_blob_id, last_accessed_at) VALUES (" + qt.Qs(len(args)) + ")"
} else {
args = []interface{}{hash, sdBlobID}
q = "INSERT IGNORE INTO stream (hash, sd_blob_id) VALUES (" + qt.Qs(len(args)) + ")"
}
streamID, err := s.exec(q, args...)
if err != nil {
return 0, errors.Err(err)
}
if streamID == 0 {
err = s.conn.QueryRow("SELECT id FROM stream WHERE sd_blob_id = ?", sdBlobID).Scan(&streamID)
if err != nil {
return 0, errors.Err(err)
}
if streamID == 0 {
return 0, errors.Err("stream ID is 0 even after INSERTing and SELECTing")
}
if s.TrackAccess == TrackAccessStreams {
err := s.touchStreams([]uint64{uint64(streamID)})
if err != nil {
return 0, errors.Err(err)
}
}
}
return streamID, nil
return nil
}
// HasBlob checks if the database contains the blob information.
func (s *SQL) HasBlob(hash string, touch bool) (bool, error) {
exists, err := s.HasBlobs([]string{hash}, touch)
if err != nil {
return false, err
func (s *SQL) HasBlob(hash string) (bool, error) {
if s.conn == nil {
return false, errors.Err("not connected")
}
return exists[hash], nil
query := "SELECT EXISTS(SELECT 1 FROM blob_ WHERE hash = ? AND is_stored = ?)"
args := []interface{}{hash, true}
logQuery(query, args...)
row := s.conn.QueryRow(query, args...)
exists := false
err := row.Scan(&exists)
return exists, errors.Err(err)
}
// HasBlobs checks if the database contains the set of blobs and returns a bool map.
func (s *SQL) HasBlobs(hashes []string, touch bool) (map[string]bool, error) {
exists, idsNeedingTouch, err := s.hasBlobs(hashes)
if touch {
if s.TrackAccess == TrackAccessBlobs {
_ = s.touchBlobs(idsNeedingTouch)
} else if s.TrackAccess == TrackAccessStreams {
_ = s.touchStreams(idsNeedingTouch)
}
}
return exists, err
}
func (s *SQL) touchBlobs(blobIDs []uint64) error {
if len(blobIDs) == 0 {
return nil
}
query := "UPDATE blob_ SET last_accessed_at = ? WHERE id IN (" + qt.Qs(len(blobIDs)) + ")"
args := make([]interface{}, len(blobIDs)+1)
args[0] = time.Now()
for i := range blobIDs {
args[i+1] = blobIDs[i]
}
startTime := time.Now()
_, err := s.exec(query, args...)
log.Debugf("touched %d blobs and took %s", len(blobIDs), time.Since(startTime))
return errors.Err(err)
}
func (s *SQL) touchStreams(streamIDs []uint64) error {
if len(streamIDs) == 0 {
return nil
}
query := "UPDATE stream SET last_accessed_at = ? WHERE id IN (" + qt.Qs(len(streamIDs)) + ")"
args := make([]interface{}, len(streamIDs)+1)
args[0] = time.Now()
for i := range streamIDs {
args[i+1] = streamIDs[i]
}
startTime := time.Now()
_, err := s.exec(query, args...)
log.Debugf("touched %d streams and took %s", len(streamIDs), time.Since(startTime))
return errors.Err(err)
}
func (s *SQL) hasBlobs(hashes []string) (map[string]bool, []uint64, error) {
func (s *SQL) HasBlobs(hashes []string) (map[string]bool, error) {
if s.conn == nil {
return nil, nil, errors.Err("not connected")
return nil, errors.Err("not connected")
}
var (
hash string
blobID uint64
streamID null.Uint64
lastAccessedAt null.Time
)
var needsTouch []uint64
var hash string
exists := make(map[string]bool)
touchDeadline := time.Now().Add(-6 * time.Hour) // touch blob if last accessed before this time
maxBatchSize := 10000
maxBatchSize := 100
doneIndex := 0
for len(hashes) > doneIndex {
@ -337,256 +121,115 @@ func (s *SQL) hasBlobs(hashes []string) (map[string]bool, []uint64, error) {
log.Debugf("getting hashes[%d:%d] of %d", doneIndex, sliceEnd, len(hashes))
batch := hashes[doneIndex:sliceEnd]
var query string
if s.TrackAccess == TrackAccessBlobs {
query = `SELECT b.hash, b.id, NULL, b.last_accessed_at
FROM blob_ b
WHERE b.is_stored = 1 and b.hash IN (` + qt.Qs(len(batch)) + `)`
} else if s.TrackAccess == TrackAccessStreams {
query = `SELECT b.hash, b.id, s.id, s.last_accessed_at
FROM blob_ b
LEFT JOIN stream_blob sb ON b.id = sb.blob_id
INNER JOIN stream s on (sb.stream_id = s.id or s.sd_blob_id = b.id)
WHERE b.is_stored = 1 and b.hash IN (` + qt.Qs(len(batch)) + `)`
} else {
query = `SELECT b.hash, b.id, NULL, NULL
FROM blob_ b
WHERE b.is_stored = 1 and b.hash IN (` + qt.Qs(len(batch)) + `)`
}
args := make([]interface{}, len(batch))
query := "SELECT hash FROM blob_ WHERE is_stored = ? && hash IN (" + querytools.Qs(len(batch)) + ")"
args := make([]interface{}, len(batch)+1)
args[0] = true
for i := range batch {
args[i] = batch[i]
args[i+1] = batch[i]
}
s.logQuery(query, args...)
logQuery(query, args...)
err := func() error {
startTime := time.Now()
rows, err := s.conn.Query(query, args...)
log.Debugf("hashes query took %s", time.Since(startTime))
rows, err := s.conn.Query(query, args...)
if err != nil {
closeRows(rows)
return exists, err
}
for rows.Next() {
err := rows.Scan(&hash)
if err != nil {
return errors.Err(err)
closeRows(rows)
return exists, err
}
defer closeRows(rows)
for rows.Next() {
err := rows.Scan(&hash, &blobID, &streamID, &lastAccessedAt)
if err != nil {
return errors.Err(err)
}
exists[hash] = true
if !lastAccessedAt.Valid || lastAccessedAt.Time.Before(touchDeadline) {
if s.TrackAccess == TrackAccessBlobs {
needsTouch = append(needsTouch, blobID)
} else if s.TrackAccess == TrackAccessStreams && !streamID.IsZero() {
needsTouch = append(needsTouch, streamID.Uint64)
}
}
}
err = rows.Err()
if err != nil {
return errors.Err(err)
}
doneIndex += len(batch)
return nil
}()
if err != nil {
return nil, nil, err
exists[hash] = true
}
}
return exists, needsTouch, nil
}
// Delete will remove (or soft-delete) the blob from the db
// NOTE: If SoftDelete is enabled, streams will never be deleted
func (s *SQL) Delete(hash string) error {
if s.SoftDelete {
_, err := s.exec("UPDATE blob_ SET is_stored = 0 WHERE hash = ?", hash)
return errors.Err(err)
}
_, err := s.exec("DELETE FROM stream WHERE sd_blob_id = (SELECT id FROM blob_ WHERE hash = ?)", hash)
if err != nil {
return errors.Err(err)
}
_, err = s.exec("DELETE FROM blob_ WHERE hash = ?", hash)
return errors.Err(err)
}
// LeastRecentlyAccessedHashes gets the least recently accessed blobs
func (s *SQL) LeastRecentlyAccessedHashes(maxBlobs int) ([]string, error) {
if s.conn == nil {
return nil, errors.Err("not connected")
}
if s.TrackAccess != TrackAccessBlobs {
return nil, errors.Err("blob access tracking is disabled")
}
query := "SELECT hash from blob_ where is_stored = 1 order by last_accessed_at limit ?"
s.logQuery(query, maxBlobs)
rows, err := s.conn.Query(query, maxBlobs)
if err != nil {
return nil, errors.Err(err)
}
defer closeRows(rows)
blobs := make([]string, 0, maxBlobs)
for rows.Next() {
var hash string
err := rows.Scan(&hash)
err = rows.Err()
if err != nil {
return nil, errors.Err(err)
closeRows(rows)
return exists, err
}
blobs = append(blobs, hash)
closeRows(rows)
doneIndex += len(batch)
}
return blobs, nil
return exists, nil
}
func (s *SQL) Count() (int, error) {
// HasFullStream checks if the full stream has been uploaded (i.e. if we have the sd blob and all the content blobs)
func (s *SQL) HasFullStream(sdHash string) (bool, error) {
if s.conn == nil {
return 0, errors.Err("not connected")
return false, errors.Err("not connected")
}
query := "SELECT count(id) from blob_"
if s.SoftDelete {
query += " where is_stored = 1"
}
s.logQuery(query)
var count int
err := s.conn.QueryRow(query).Scan(&count)
return count, errors.Err(err)
}
// Block will mark a blob as blocked
func (s *SQL) Block(hash string) error {
query := "INSERT IGNORE INTO blocked SET hash = ?"
args := []interface{}{hash}
s.logQuery(query, args...)
_, err := s.conn.Exec(query, args...)
return errors.Err(err)
}
// GetBlocked will return a list of blocked hashes
func (s *SQL) GetBlocked() (map[string]bool, error) {
query := "SELECT hash FROM blocked"
s.logQuery(query)
rows, err := s.conn.Query(query)
if err != nil {
return nil, errors.Err(err)
}
defer closeRows(rows)
blocked := make(map[string]bool)
var hash string
for rows.Next() {
err := rows.Scan(&hash)
if err != nil {
return nil, errors.Err(err)
}
blocked[hash] = true
}
err = rows.Err()
if err != nil {
return nil, errors.Err(err)
}
return blocked, nil
}
// MissingBlobsForKnownStream returns missing blobs for an existing stream
// WARNING: if the stream does NOT exist, no blob hashes will be returned, which looks
// like no blobs are missing
func (s *SQL) MissingBlobsForKnownStream(sdHash string) ([]string, error) {
if s.conn == nil {
return nil, errors.Err("not connected")
}
query := `
SELECT b.hash FROM blob_ b
INNER JOIN stream_blob sb ON b.id = sb.blob_id
INNER JOIN stream s ON s.id = sb.stream_id
INNER JOIN blob_ sdb ON sdb.id = s.sd_blob_id AND sdb.hash = ?
WHERE b.is_stored = 0
`
query := `SELECT EXISTS(
SELECT 1 FROM stream s
LEFT JOIN stream_blob sb ON s.hash = sb.stream_hash
LEFT JOIN blob_ b ON b.hash = sb.blob_hash
WHERE s.sd_hash = ?
GROUP BY s.sd_hash
HAVING min(b.is_stored = 1)
);`
args := []interface{}{sdHash}
s.logQuery(query, args...)
logQuery(query, args...)
rows, err := s.conn.Query(query, args...)
if err != nil {
return nil, errors.Err(err)
}
defer closeRows(rows)
row := s.conn.QueryRow(query, args...)
var missingBlobs []string
var hash string
exists := false
err := row.Scan(&exists)
for rows.Next() {
err := rows.Scan(&hash)
if err != nil {
return nil, errors.Err(err)
}
missingBlobs = append(missingBlobs, hash)
}
err = rows.Err()
if err != nil {
return nil, errors.Err(err)
}
return missingBlobs, errors.Err(err)
return exists, errors.Err(err)
}
// AddSDBlob insert the SD blob and all the content blobs. The content blobs are marked as "not stored",
// but they are tracked so reflector knows what it is missing.
// AddSDBlob takes the SD Hash number of blobs and the set of blobs. In a single db tx it inserts the sdblob information
// into a stream, and inserts the associated blobs' information in the database. If a blob fails the transaction is
// rolled back and error(s) are returned.
func (s *SQL) AddSDBlob(sdHash string, sdBlobLength int, sdBlob SdBlob) error {
if s.conn == nil {
return errors.Err("not connected")
}
sdBlobID, err := s.insertBlob(sdHash, sdBlobLength, true)
if err != nil {
return err
}
streamID, err := s.insertStream(sdBlob.StreamHash, sdBlobID)
if err != nil {
return err
}
// insert content blobs and connect them to stream
for _, contentBlob := range sdBlob.Blobs {
if contentBlob.BlobHash == "" {
// null terminator blob
continue
}
blobID, err := s.insertBlob(contentBlob.BlobHash, contentBlob.Length, false)
return withTx(s.conn, func(tx *sql.Tx) error {
// insert sd blob
err := addBlob(tx, sdHash, sdBlobLength, true)
if err != nil {
return err
}
args := []interface{}{streamID, blobID, contentBlob.BlobNum}
_, err = s.exec(
"INSERT IGNORE INTO stream_blob (stream_id, blob_id, num) VALUES ("+qt.Qs(len(args))+")",
args...,
// insert stream
err = execTx(tx,
"INSERT IGNORE INTO stream (hash, sd_hash) VALUES (?,?)",
[]interface{}{sdBlob.StreamHash, sdHash},
)
if err != nil {
return errors.Err(err)
}
}
return nil
// insert content blobs and connect them to stream
for _, contentBlob := range sdBlob.Blobs {
if contentBlob.BlobHash == "" {
// null terminator blob
continue
}
err := addBlob(tx, contentBlob.BlobHash, contentBlob.Length, false)
if err != nil {
return err
}
err = execTx(tx,
"INSERT IGNORE INTO stream_blob (stream_hash, blob_hash, num) VALUES (?,?,?)",
[]interface{}{sdBlob.StreamHash, contentBlob.BlobHash, contentBlob.BlobNum},
)
if err != nil {
return errors.Err(err)
}
}
return nil
})
}
// GetHashRange gets the smallest and biggest hashes in the db
@ -600,7 +243,7 @@ func (s *SQL) GetHashRange() (string, string, error) {
query := "SELECT MIN(hash), MAX(hash) from blob_"
s.logQuery(query)
logQuery(query)
err := s.conn.QueryRow(query).Scan(&min, &max)
return min, max, err
@ -624,7 +267,7 @@ func (s *SQL) GetStoredHashesInRange(ctx context.Context, start, end bits.Bitmap
query := "SELECT hash FROM blob_ WHERE hash >= ? AND hash <= ? AND is_stored = 1"
args := []interface{}{start.Hex(), end.Hex()}
s.logQuery(query, args...)
logQuery(query, args...)
rows, err := s.conn.Query(query, args...)
defer closeRows(rows)
@ -704,77 +347,38 @@ func closeRows(rows *sql.Rows) {
}
}
func (s *SQL) exec(query string, args ...interface{}) (int64, error) {
s.logQuery(query, args...)
attempt, maxAttempts := 0, 3
Retry:
attempt++
result, err := s.conn.Exec(query, args...)
if isLockTimeoutError(err) {
if attempt <= maxAttempts {
//Error 1205: Lock wait timeout exceeded; try restarting transaction
goto Retry
}
err = errors.Prefix("Lock timeout for query "+query, err)
}
if err != nil {
return 0, errors.Err(err)
}
lastID, err := result.LastInsertId()
return lastID, errors.Err(err)
}
func isLockTimeoutError(err error) bool {
e, ok := err.(*mysql.MySQLError)
return ok && e != nil && e.Number == 1205
func execTx(tx *sql.Tx, query string, args []interface{}) error {
logQuery(query, args...)
_, err := tx.Exec(query, args...)
return errors.Err(err)
}
/* SQL schema
in prod, set tx_isolation to READ-COMMITTED to improve db performance
make sure you use latin1 or utf8 charset, NOT utf8mb4. that's a waste of space.
todo: could add UNIQUE KEY (stream_hash, num) to stream_blob ...
CREATE TABLE blob_ (
id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT UNIQUE,
hash char(96) NOT NULL,
is_stored TINYINT(1) NOT NULL DEFAULT 0,
length bigint(20) unsigned DEFAULT NULL,
last_accessed_at TIMESTAMP NULL DEFAULT NULL,
PRIMARY KEY (id),
UNIQUE KEY blob_hash_idx (hash),
KEY `blob_last_accessed_idx` (`last_accessed_at`),
KEY `is_stored_idx` (`is_stored`)
);
CREATE TABLE stream (
id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT UNIQUE,
hash char(96) NOT NULL,
sd_blob_id BIGINT UNSIGNED NOT NULL,
last_accessed_at TIMESTAMP NULL DEFAULT NULL,
PRIMARY KEY (id),
UNIQUE KEY stream_hash_idx (hash),
KEY stream_sd_blob_id_idx (sd_blob_id),
KEY last_accessed_at_idx (last_accessed_at),
FOREIGN KEY (sd_blob_id) REFERENCES blob_ (id) ON DELETE RESTRICT ON UPDATE CASCADE
);
CREATE TABLE stream_blob (
stream_id BIGINT UNSIGNED NOT NULL,
blob_id BIGINT UNSIGNED NOT NULL,
num int NOT NULL,
PRIMARY KEY (stream_id, blob_id),
KEY stream_blob_blob_id_idx (blob_id),
FOREIGN KEY (stream_id) REFERENCES stream (id) ON DELETE CASCADE ON UPDATE CASCADE,
FOREIGN KEY (blob_id) REFERENCES blob_ (id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE blocked (
hash char(96) NOT NULL,
PRIMARY KEY (hash)
);
CREATE TABLE stream (
hash char(96) NOT NULL,
sd_hash char(96) NOT NULL,
PRIMARY KEY (hash),
KEY sd_hash_idx (sd_hash),
FOREIGN KEY (sd_hash) REFERENCES blob_ (hash) ON DELETE RESTRICT ON UPDATE CASCADE
);
CREATE TABLE stream_blob (
stream_hash char(96) NOT NULL,
blob_hash char(96) NOT NULL,
num int NOT NULL,
PRIMARY KEY (stream_hash, blob_hash),
FOREIGN KEY (stream_hash) REFERENCES stream (hash) ON DELETE CASCADE ON UPDATE CASCADE,
FOREIGN KEY (blob_hash) REFERENCES blob_ (hash) ON DELETE CASCADE ON UPDATE CASCADE
);
could add UNIQUE KEY (stream_hash, num) to stream_blob ...
*/

399
dht/bits/bitmap.go Normal file
View file

@ -0,0 +1,399 @@
package bits
import (
"crypto/rand"
"encoding/hex"
"math/big"
"strconv"
"strings"
"github.com/lbryio/lbry.go/errors"
"github.com/lyoshenka/bencode"
)
// TODO: http://roaringbitmap.org/
const (
NumBytes = 48 // bytes
NumBits = NumBytes * 8
)
// Bitmap is a generalized representation of an identifier or data that can be sorted, compared fast. Used by the DHT
// package as a way to handle the unique identifiers of a DHT node.
type Bitmap [NumBytes]byte
func (b Bitmap) RawString() string {
return string(b[:])
}
func (b Bitmap) String() string {
return b.Hex()
}
// BString returns the bitmap as a string of 0s and 1s
func (b Bitmap) BString() string {
var s string
for _, byte := range b {
s += strconv.FormatInt(int64(byte), 2)
}
return s
}
// Hex returns a hexadecimal representation of the bitmap.
func (b Bitmap) Hex() string {
return hex.EncodeToString(b[:])
}
// HexShort returns a hexadecimal representation of the first 4 bytes.
func (b Bitmap) HexShort() string {
return hex.EncodeToString(b[:4])
}
// HexSimplified returns the hexadecimal representation with all leading 0's removed
func (b Bitmap) HexSimplified() string {
simple := strings.TrimLeft(b.Hex(), "0")
if simple == "" {
simple = "0"
}
return simple
}
func (b Bitmap) Big() *big.Int {
i := new(big.Int)
i.SetString(b.Hex(), 16)
return i
}
// Cmp compares b and other and returns:
//
// -1 if b < other
// 0 if b == other
// +1 if b > other
//
func (b Bitmap) Cmp(other Bitmap) int {
for k := range b {
if b[k] < other[k] {
return -1
} else if b[k] > other[k] {
return 1
}
}
return 0
}
// Closer returns true if dist(b,x) < dist(b,y)
func (b Bitmap) Closer(x, y Bitmap) bool {
return x.Xor(b).Cmp(y.Xor(b)) < 0
}
// Equals returns true if every byte in bitmap are equal, false otherwise
func (b Bitmap) Equals(other Bitmap) bool {
return b.Cmp(other) == 0
}
// Copy returns a duplicate value for the bitmap.
func (b Bitmap) Copy() Bitmap {
var ret Bitmap
copy(ret[:], b[:])
return ret
}
// Xor returns a diff bitmap. If they are equal, the returned bitmap will be all 0's. If 100% unique the returned
// bitmap will be all 1's.
func (b Bitmap) Xor(other Bitmap) Bitmap {
var ret Bitmap
for k := range b {
ret[k] = b[k] ^ other[k]
}
return ret
}
// And returns a comparison bitmap, that for each byte returns the AND true table result
func (b Bitmap) And(other Bitmap) Bitmap {
var ret Bitmap
for k := range b {
ret[k] = b[k] & other[k]
}
return ret
}
// Or returns a comparison bitmap, that for each byte returns the OR true table result
func (b Bitmap) Or(other Bitmap) Bitmap {
var ret Bitmap
for k := range b {
ret[k] = b[k] | other[k]
}
return ret
}
// Not returns a complimentary bitmap that is an inverse. So b.NOT.NOT = b
func (b Bitmap) Not() Bitmap {
var ret Bitmap
for k := range b {
ret[k] = ^b[k]
}
return ret
}
func (b Bitmap) add(other Bitmap) (Bitmap, bool) {
var ret Bitmap
carry := false
for i := NumBits - 1; i >= 0; i-- {
bBit := getBit(b[:], i)
oBit := getBit(other[:], i)
setBit(ret[:], i, bBit != oBit != carry)
carry = (bBit && oBit) || (bBit && carry) || (oBit && carry)
}
return ret, carry
}
// Add returns a bitmap that treats both bitmaps as numbers and adding them together. Since the size of a bitmap is
// limited, an overflow is possible when adding bitmaps.
func (b Bitmap) Add(other Bitmap) Bitmap {
ret, carry := b.add(other)
if carry {
panic("overflow in bitmap addition. limited to " + strconv.Itoa(NumBits) + " bits.")
}
return ret
}
// Sub returns a bitmap that treats both bitmaps as numbers and subtracts then via the inverse of the other and adding
// then together a + (-b). Negative bitmaps are not supported so other must be greater than this.
func (b Bitmap) Sub(other Bitmap) Bitmap {
if b.Cmp(other) < 0 {
// ToDo: Why is this not supported? Should it say not implemented? BitMap might have a generic use case outside of dht.
panic("negative bitmaps not supported")
}
complement, _ := other.Not().add(FromShortHexP("1"))
ret, _ := b.add(complement)
return ret
}
// Get returns the binary bit at the position passed.
func (b Bitmap) Get(n int) bool {
return getBit(b[:], n)
}
// Set sets the binary bit at the position passed.
func (b Bitmap) Set(n int, one bool) Bitmap {
ret := b.Copy()
setBit(ret[:], n, one)
return ret
}
// PrefixLen returns the number of leading 0 bits
func (b Bitmap) PrefixLen() int {
for i := range b {
for j := 0; j < 8; j++ {
if (b[i]>>uint8(7-j))&0x1 != 0 {
return i*8 + j
}
}
}
return NumBits
}
// Prefix returns a copy of b with the first n bits set to 1 (if `one` is true) or 0 (if `one` is false)
// https://stackoverflow.com/a/23192263/182709
func (b Bitmap) Prefix(n int, one bool) Bitmap {
ret := b.Copy()
Outer:
for i := range ret {
for j := 0; j < 8; j++ {
if i*8+j < n {
if one {
ret[i] |= 1 << uint(7-j)
} else {
ret[i] &= ^(1 << uint(7-j))
}
} else {
break Outer
}
}
}
return ret
}
// Suffix returns a copy of b with the last n bits set to 1 (if `one` is true) or 0 (if `one` is false)
// https://stackoverflow.com/a/23192263/182709
func (b Bitmap) Suffix(n int, one bool) Bitmap {
ret := b.Copy()
Outer:
for i := len(ret) - 1; i >= 0; i-- {
for j := 7; j >= 0; j-- {
if i*8+j >= NumBits-n {
if one {
ret[i] |= 1 << uint(7-j)
} else {
ret[i] &= ^(1 << uint(7-j))
}
} else {
break Outer
}
}
}
return ret
}
// MarshalBencode implements the Marshaller(bencode)/Message interface.
func (b Bitmap) MarshalBencode() ([]byte, error) {
str := string(b[:])
return bencode.EncodeBytes(str)
}
// UnmarshalBencode implements the Marshaller(bencode)/Message interface.
func (b *Bitmap) UnmarshalBencode(encoded []byte) error {
var str string
err := bencode.DecodeBytes(encoded, &str)
if err != nil {
return err
}
if len(str) != NumBytes {
return errors.Err("invalid bitmap length")
}
copy(b[:], str)
return nil
}
// FromBytes returns a bitmap as long as the byte array is of a specific length specified in the parameters.
func FromBytes(data []byte) (Bitmap, error) {
var bmp Bitmap
if len(data) != len(bmp) {
return bmp, errors.Err("invalid bitmap of length %d", len(data))
}
copy(bmp[:], data)
return bmp, nil
}
// FromBytesP returns a bitmap as long as the byte array is of a specific length specified in the parameters
// otherwise it wil panic.
func FromBytesP(data []byte) Bitmap {
bmp, err := FromBytes(data)
if err != nil {
panic(err)
}
return bmp
}
//FromString returns a bitmap by converting the string to bytes and creating from bytes as long as the byte array
// is of a specific length specified in the parameters
func FromString(data string) (Bitmap, error) {
return FromBytes([]byte(data))
}
//FromStringP returns a bitmap by converting the string to bytes and creating from bytes as long as the byte array
// is of a specific length specified in the parameters otherwise it wil panic.
func FromStringP(data string) Bitmap {
bmp, err := FromString(data)
if err != nil {
panic(err)
}
return bmp
}
//FromHex returns a bitmap by converting the hex string to bytes and creating from bytes as long as the byte array
// is of a specific length specified in the parameters
func FromHex(hexStr string) (Bitmap, error) {
decoded, err := hex.DecodeString(hexStr)
if err != nil {
return Bitmap{}, errors.Err(err)
}
return FromBytes(decoded)
}
//FromHexP returns a bitmap by converting the hex string to bytes and creating from bytes as long as the byte array
// is of a specific length specified in the parameters otherwise it wil panic.
func FromHexP(hexStr string) Bitmap {
bmp, err := FromHex(hexStr)
if err != nil {
panic(err)
}
return bmp
}
//FromShortHex returns a bitmap by converting the hex string to bytes, adding the leading zeros prefix to the
// hex string and creating from bytes as long as the byte array is of a specific length specified in the parameters
func FromShortHex(hexStr string) (Bitmap, error) {
return FromHex(strings.Repeat("0", NumBytes*2-len(hexStr)) + hexStr)
}
//FromShortHexP returns a bitmap by converting the hex string to bytes, adding the leading zeros prefix to the
// hex string and creating from bytes as long as the byte array is of a specific length specified in the parameters
// otherwise it wil panic.
func FromShortHexP(hexStr string) Bitmap {
bmp, err := FromShortHex(hexStr)
if err != nil {
panic(err)
}
return bmp
}
func FromBigP(b *big.Int) Bitmap {
return FromShortHexP(b.Text(16))
}
// Max returns a bitmap with all bits set to 1
func MaxP() Bitmap {
return FromHexP(strings.Repeat("f", NumBytes*2))
}
// Rand generates a cryptographically random bitmap with the confines of the parameters specified.
func Rand() Bitmap {
var id Bitmap
_, err := rand.Read(id[:])
if err != nil {
panic(err)
}
return id
}
// RandInRangeP generates a cryptographically random bitmap and while it is greater than the high threshold
// bitmap will subtract the diff between high and low until it is no longer greater that the high.
func RandInRangeP(low, high Bitmap) Bitmap {
diff := high.Sub(low)
r := Rand()
for r.Cmp(diff) > 0 {
r = r.Sub(diff)
}
//ToDo - Adding the low at this point doesn't gurantee it will be within the range. Consider bitmaps as numbers and
// I have a range of 50-100. If get to say 60, and add 50, I would be at 110. Should protect against this?
return r.Add(low)
}
func getBit(b []byte, n int) bool {
i := n / 8
j := n % 8
return b[i]&(1<<uint(7-j)) > 0
}
func setBit(b []byte, n int, one bool) {
i := n / 8
j := n % 8
if one {
b[i] |= 1 << uint(7-j)
} else {
b[i] &= ^(1 << uint(7-j))
}
}
// CLosest returns the closest bitmap to target. if no bitmaps are provided, target itself is returned
func Closest(target Bitmap, bitmaps ...Bitmap) Bitmap {
if len(bitmaps) == 0 {
return target
}
var closest *Bitmap
for _, b := range bitmaps {
if closest == nil || target.Closer(b, *closest) {
closest = &b
}
}
return *closest
}

386
dht/bits/bitmap_test.go Normal file
View file

@ -0,0 +1,386 @@
package bits
import (
"fmt"
"testing"
"github.com/lyoshenka/bencode"
)
func TestBitmap(t *testing.T) {
a := Bitmap{
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,
12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
}
b := Bitmap{
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,
12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 47, 46,
}
c := Bitmap{
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1,
}
if !a.Equals(a) {
t.Error("bitmap does not equal itself")
}
if a.Equals(b) {
t.Error("bitmap equals another bitmap with different id")
}
if !a.Xor(b).Equals(c) {
t.Error(a.Xor(b))
}
if c.PrefixLen() != 375 {
t.Error(c.PrefixLen())
}
if b.Cmp(a) < 0 {
t.Error("bitmap fails Cmp test")
}
if a.Closer(c, b) || !a.Closer(b, c) || c.Closer(a, b) || c.Closer(b, c) {
t.Error("bitmap fails Closer test")
}
id := "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef"
if FromHexP(id).Hex() != id {
t.Error(FromHexP(id).Hex())
}
}
func TestBitmap_GetBit(t *testing.T) {
tt := []struct {
bit int
expected bool
panic bool
}{
{bit: 383, expected: false, panic: false},
{bit: 382, expected: true, panic: false},
{bit: 381, expected: false, panic: false},
{bit: 380, expected: true, panic: false},
}
b := FromShortHexP("a")
for _, test := range tt {
actual := getBit(b[:], test.bit)
if test.expected != actual {
t.Errorf("getting bit %d of %s: expected %t, got %t", test.bit, b.HexSimplified(), test.expected, actual)
}
}
}
func TestBitmap_SetBit(t *testing.T) {
tt := []struct {
hex string
bit int
one bool
expected string
panic bool
}{
{hex: "0", bit: 383, one: true, expected: "1", panic: false},
{hex: "0", bit: 382, one: true, expected: "2", panic: false},
{hex: "0", bit: 381, one: true, expected: "4", panic: false},
{hex: "0", bit: 385, one: true, expected: "1", panic: true},
{hex: "0", bit: 384, one: true, expected: "1", panic: true},
}
for _, test := range tt {
expected := FromShortHexP(test.expected)
actual := FromShortHexP(test.hex)
if test.panic {
assertPanic(t, fmt.Sprintf("setting bit %d to %t", test.bit, test.one), func() { setBit(actual[:], test.bit, test.one) })
} else {
setBit(actual[:], test.bit, test.one)
if !expected.Equals(actual) {
t.Errorf("setting bit %d to %t: expected %s, got %s", test.bit, test.one, test.expected, actual.HexSimplified())
}
}
}
}
func TestBitmap_FromHexShort(t *testing.T) {
tt := []struct {
short string
long string
}{
{short: "", long: "000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"},
{short: "0", long: "000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"},
{short: "00000", long: "000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"},
{short: "9473745bc", long: "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000009473745bc"},
{short: "09473745bc", long: "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000009473745bc"},
{short: "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef",
long: "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef"},
}
for _, test := range tt {
short := FromShortHexP(test.short)
long := FromHexP(test.long)
if !short.Equals(long) {
t.Errorf("short hex %s: expected %s, got %s", test.short, long.Hex(), short.Hex())
}
}
}
func TestBitmapMarshal(t *testing.T) {
b := FromStringP("123456789012345678901234567890123456789012345678")
encoded, err := bencode.EncodeBytes(b)
if err != nil {
t.Error(err)
}
if string(encoded) != "48:123456789012345678901234567890123456789012345678" {
t.Error("encoding does not match expected")
}
}
func TestBitmapMarshalEmbedded(t *testing.T) {
e := struct {
A string
B Bitmap
C int
}{
A: "1",
B: FromStringP("222222222222222222222222222222222222222222222222"),
C: 3,
}
encoded, err := bencode.EncodeBytes(e)
if err != nil {
t.Error(err)
}
if string(encoded) != "d1:A1:11:B48:2222222222222222222222222222222222222222222222221:Ci3ee" {
t.Error("encoding does not match expected")
}
}
func TestBitmapMarshalEmbedded2(t *testing.T) {
encoded, err := bencode.EncodeBytes([]interface{}{
FromStringP("333333333333333333333333333333333333333333333333"),
})
if err != nil {
t.Error(err)
}
if string(encoded) != "l48:333333333333333333333333333333333333333333333333e" {
t.Error("encoding does not match expected")
}
}
func TestBitmap_PrefixLen(t *testing.T) {
tt := []struct {
hex string
len int
}{
{len: 0, hex: "F00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"},
{len: 0, hex: "800000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"},
{len: 1, hex: "700000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"},
{len: 1, hex: "400000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"},
{len: 384, hex: "000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"},
{len: 383, hex: "000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001"},
{len: 382, hex: "000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002"},
{len: 382, hex: "000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003"},
}
for _, test := range tt {
len := FromHexP(test.hex).PrefixLen()
if len != test.len {
t.Errorf("got prefix len %d; expected %d for %s", len, test.len, test.hex)
}
}
}
func TestBitmap_Prefix(t *testing.T) {
allOne := FromHexP("ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff")
zerosTT := []struct {
zeros int
expected string
}{
{zeros: -123, expected: "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"},
{zeros: 0, expected: "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"},
{zeros: 1, expected: "7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"},
{zeros: 69, expected: "000000000000000007ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"},
{zeros: 383, expected: "000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001"},
{zeros: 384, expected: "000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"},
{zeros: 400, expected: "000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"},
}
for _, test := range zerosTT {
expected := FromHexP(test.expected)
actual := allOne.Prefix(test.zeros, false)
if !actual.Equals(expected) {
t.Errorf("%d zeros: got %s; expected %s", test.zeros, actual.Hex(), expected.Hex())
}
}
for i := 0; i < NumBits; i++ {
b := allOne.Prefix(i, false)
if b.PrefixLen() != i {
t.Errorf("got prefix len %d; expected %d for %s", b.PrefixLen(), i, b.Hex())
}
}
allZero := FromHexP("000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000")
onesTT := []struct {
ones int
expected string
}{
{ones: -123, expected: "000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"},
{ones: 0, expected: "000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"},
{ones: 1, expected: "800000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"},
{ones: 69, expected: "fffffffffffffffff8000000000000000000000000000000000000000000000000000000000000000000000000000000"},
{ones: 383, expected: "fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffe"},
{ones: 384, expected: "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"},
{ones: 400, expected: "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"},
}
for _, test := range onesTT {
expected := FromHexP(test.expected)
actual := allZero.Prefix(test.ones, true)
if !actual.Equals(expected) {
t.Errorf("%d ones: got %s; expected %s", test.ones, actual.Hex(), expected.Hex())
}
}
}
func TestBitmap_Suffix(t *testing.T) {
allOne := FromHexP("ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff")
zerosTT := []struct {
zeros int
expected string
}{
{zeros: -123, expected: "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"},
{zeros: 0, expected: "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"},
{zeros: 1, expected: "fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffe"},
{zeros: 69, expected: "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffe00000000000000000"},
{zeros: 383, expected: "800000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"},
{zeros: 384, expected: "000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"},
{zeros: 400, expected: "000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"},
}
for _, test := range zerosTT {
expected := FromHexP(test.expected)
actual := allOne.Suffix(test.zeros, false)
if !actual.Equals(expected) {
t.Errorf("%d zeros: got %s; expected %s", test.zeros, actual.Hex(), expected.Hex())
}
}
for i := 0; i < NumBits; i++ {
b := allOne.Prefix(i, false)
if b.PrefixLen() != i {
t.Errorf("got prefix len %d; expected %d for %s", b.PrefixLen(), i, b.Hex())
}
}
allZero := FromHexP("000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000")
onesTT := []struct {
ones int
expected string
}{
{ones: -123, expected: "000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"},
{ones: 0, expected: "000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"},
{ones: 1, expected: "000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001"},
{ones: 69, expected: "0000000000000000000000000000000000000000000000000000000000000000000000000000001fffffffffffffffff"},
{ones: 383, expected: "7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"},
{ones: 384, expected: "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"},
{ones: 400, expected: "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"},
}
for _, test := range onesTT {
expected := FromHexP(test.expected)
actual := allZero.Suffix(test.ones, true)
if !actual.Equals(expected) {
t.Errorf("%d ones: got %s; expected %s", test.ones, actual.Hex(), expected.Hex())
}
}
}
func TestBitmap_Add(t *testing.T) {
tt := []struct {
a, b, sum string
panic bool
}{
{"0", "0", "0", false},
{"0", "1", "1", false},
{"1", "0", "1", false},
{"1", "1", "2", false},
{"8", "4", "c", false},
{"1000", "0010", "1010", false},
{"1111", "1111", "2222", false},
{"ffff", "1", "10000", false},
{"ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", "0", "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", false},
{"ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", "1", "", true},
}
for _, test := range tt {
a := FromShortHexP(test.a)
b := FromShortHexP(test.b)
expected := FromShortHexP(test.sum)
if test.panic {
assertPanic(t, fmt.Sprintf("adding %s and %s", test.a, test.b), func() { a.Add(b) })
} else {
actual := a.Add(b)
if !expected.Equals(actual) {
t.Errorf("adding %s and %s; expected %s, got %s", test.a, test.b, test.sum, actual.HexSimplified())
}
}
}
}
func TestBitmap_Sub(t *testing.T) {
tt := []struct {
a, b, sum string
panic bool
}{
{"0", "0", "0", false},
{"1", "0", "1", false},
{"1", "1", "0", false},
{"8", "4", "4", false},
{"f", "9", "6", false},
{"f", "e", "1", false},
{"10", "f", "1", false},
{"2222", "1111", "1111", false},
{"ffff", "1", "fffe", false},
{"ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", "0", "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", false},
{"ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", "0", false},
{"0", "1", "", true},
}
for _, test := range tt {
a := FromShortHexP(test.a)
b := FromShortHexP(test.b)
expected := FromShortHexP(test.sum)
if test.panic {
assertPanic(t, fmt.Sprintf("subtracting %s - %s", test.a, test.b), func() { a.Sub(b) })
} else {
actual := a.Sub(b)
if !expected.Equals(actual) {
t.Errorf("subtracting %s - %s; expected %s, got %s", test.a, test.b, test.sum, actual.HexSimplified())
}
}
}
}
func assertPanic(t *testing.T, text string, f func()) {
defer func() {
if r := recover(); r == nil {
t.Errorf("%s: did not panic as expected", text)
}
}()
f()
}

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package bits
import (
"math/big"
"github.com/lbryio/errors.go"
)
// Range has a start and end
type Range struct {
Start Bitmap
End Bitmap
}
func MaxRange() Range {
return Range{
Start: Bitmap{},
End: MaxP(),
}
}
// IntervalP divides the range into `num` intervals and returns the `n`th one
// intervals are approximately the same size, but may not be exact because of rounding issues
// the first interval always starts at the beginning of the range, and the last interval always ends at the end
func (r Range) IntervalP(n, num int) Range {
if num < 1 || n < 1 || n > num {
panic(errors.Err("invalid interval %d of %d", n, num))
}
start := r.intervalStart(n, num)
end := r.End.Big()
if n < num {
end = r.intervalStart(n+1, num)
end.Sub(end, big.NewInt(1))
}
return Range{FromBigP(start), FromBigP(end)}
}
func (r Range) intervalStart(n, num int) *big.Int {
// formula:
// size = (end - start) / num
// rem = (end - start) % num
// intervalStart = rangeStart + (size * n-1) + ((rem * n-1) % num)
size := new(big.Int)
rem := new(big.Int)
size.Sub(r.End.Big(), r.Start.Big()).DivMod(size, big.NewInt(int64(num)), rem)
size.Mul(size, big.NewInt(int64(n-1)))
rem.Mul(rem, big.NewInt(int64(n-1))).Mod(rem, big.NewInt(int64(num)))
start := r.Start.Big()
start.Add(start, size).Add(start, rem)
return start
}
func (r Range) IntervalSize() *big.Int {
return (&big.Int{}).Sub(r.End.Big(), r.Start.Big())
}
func (r Range) Contains(b Bitmap) bool {
return r.Start.Cmp(b) <= 0 && r.End.Cmp(b) >= 0
}

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package bits
import (
"math/big"
"testing"
)
func TestMaxRange(t *testing.T) {
start := FromHexP("000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000")
end := FromHexP("ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff")
r := MaxRange()
if !r.Start.Equals(start) {
t.Error("max range does not start at the beginning")
}
if !r.End.Equals(end) {
t.Error("max range does not end at the end")
}
}
func TestRange_IntervalP(t *testing.T) {
max := MaxRange()
numIntervals := 97
expectedAvg := (&big.Int{}).Div(max.IntervalSize(), big.NewInt(int64(numIntervals)))
maxDiff := big.NewInt(int64(numIntervals))
var lastEnd Bitmap
for i := 1; i <= numIntervals; i++ {
ival := max.IntervalP(i, numIntervals)
if i == 1 && !ival.Start.Equals(max.Start) {
t.Error("first interval does not start at 0")
}
if i == numIntervals && !ival.End.Equals(max.End) {
t.Error("last interval does not end at max")
}
if i > 1 && !ival.Start.Equals(lastEnd.Add(FromShortHexP("1"))) {
t.Errorf("interval %d of %d: last end was %s, this start is %s", i, numIntervals, lastEnd.Hex(), ival.Start.Hex())
}
if ival.IntervalSize().Cmp((&big.Int{}).Add(expectedAvg, maxDiff)) > 0 || ival.IntervalSize().Cmp((&big.Int{}).Sub(expectedAvg, maxDiff)) < 0 {
t.Errorf("interval %d of %d: interval size is outside the normal range", i, numIntervals)
}
lastEnd = ival.End
}
}

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package dht
import (
"math/rand"
"net"
"sync"
"time"
"github.com/lbryio/reflector.go/dht/bits"
)
const (
bootstrapDefaultRefreshDuration = 15 * time.Minute
)
// BootstrapNode is a configured node setup for testing.
type BootstrapNode struct {
Node
initialPingInterval time.Duration
checkInterval time.Duration
nlock *sync.RWMutex
peers map[bits.Bitmap]*peer
nodeIDs []bits.Bitmap // necessary for efficient random ID selection
}
// NewBootstrapNode returns a BootstrapNode pointer.
func NewBootstrapNode(id bits.Bitmap, initialPingInterval, rePingInterval time.Duration) *BootstrapNode {
b := &BootstrapNode{
Node: *NewNode(id),
initialPingInterval: initialPingInterval,
checkInterval: rePingInterval,
nlock: &sync.RWMutex{},
peers: make(map[bits.Bitmap]*peer),
nodeIDs: make([]bits.Bitmap, 0),
}
b.requestHandler = b.handleRequest
return b
}
// Add manually adds a contact
func (b *BootstrapNode) Add(c Contact) {
b.upsert(c)
}
// Connect connects to the given connection and starts any background threads necessary
func (b *BootstrapNode) Connect(conn UDPConn) error {
err := b.Node.Connect(conn)
if err != nil {
return err
}
log.Infof("[%s] bootstrap: node connected", b.id.HexShort())
go func() {
t := time.NewTicker(b.checkInterval / 5)
for {
select {
case <-t.C:
b.check()
case <-b.grp.Ch():
return
}
}
}()
return nil
}
// upsert adds the contact to the list, or updates the lastPinged time
func (b *BootstrapNode) upsert(c Contact) {
b.nlock.Lock()
defer b.nlock.Unlock()
if peer, exists := b.peers[c.ID]; exists {
log.Debugf("[%s] bootstrap: touching contact %s", b.id.HexShort(), peer.Contact.ID.HexShort())
peer.Touch()
return
}
log.Debugf("[%s] bootstrap: adding new contact %s", b.id.HexShort(), c.ID.HexShort())
b.peers[c.ID] = &peer{c, b.id.Xor(c.ID), time.Now(), 0}
b.nodeIDs = append(b.nodeIDs, c.ID)
}
// remove removes the contact from the list
func (b *BootstrapNode) remove(c Contact) {
b.nlock.Lock()
defer b.nlock.Unlock()
_, exists := b.peers[c.ID]
if !exists {
return
}
log.Debugf("[%s] bootstrap: removing contact %s", b.id.HexShort(), c.ID.HexShort())
delete(b.peers, c.ID)
for i := range b.nodeIDs {
if b.nodeIDs[i].Equals(c.ID) {
b.nodeIDs = append(b.nodeIDs[:i], b.nodeIDs[i+1:]...)
break
}
}
}
// get returns up to `limit` random contacts from the list
func (b *BootstrapNode) get(limit int) []Contact {
b.nlock.RLock()
defer b.nlock.RUnlock()
if len(b.peers) < limit {
limit = len(b.peers)
}
ret := make([]Contact, limit)
for i, k := range randKeys(len(b.nodeIDs))[:limit] {
ret[i] = b.peers[b.nodeIDs[k]].Contact
}
return ret
}
// ping pings a node. if the node responds, it is added to the list. otherwise, it is removed
func (b *BootstrapNode) ping(c Contact) {
log.Debugf("[%s] bootstrap: pinging %s", b.id.HexShort(), c.ID.HexShort())
b.grp.Add(1)
defer b.grp.Done()
resCh := b.SendAsync(c, Request{Method: pingMethod})
var res *Response
select {
case res = <-resCh:
case <-b.grp.Ch():
return
}
if res != nil && res.Data == pingSuccessResponse {
b.upsert(c)
} else {
b.remove(c)
}
}
func (b *BootstrapNode) check() {
b.nlock.RLock()
defer b.nlock.RUnlock()
for i := range b.peers {
if !b.peers[i].ActiveInLast(b.checkInterval) {
go b.ping(b.peers[i].Contact)
}
}
}
// handleRequest handles the requests received from udp.
func (b *BootstrapNode) handleRequest(addr *net.UDPAddr, request Request) {
switch request.Method {
case pingMethod:
err := b.sendMessage(addr, Response{ID: request.ID, NodeID: b.id, Data: pingSuccessResponse})
if err != nil {
log.Error("error sending response message - ", err)
}
case findNodeMethod:
if request.Arg == nil {
log.Errorln("request is missing arg")
return
}
err := b.sendMessage(addr, Response{
ID: request.ID,
NodeID: b.id,
Contacts: b.get(bucketSize),
})
if err != nil {
log.Error("error sending 'findnodemethod' response message - ", err)
}
}
go func() {
b.nlock.RLock()
_, exists := b.peers[request.NodeID]
b.nlock.RUnlock()
if !exists {
log.Debugf("[%s] bootstrap: queuing %s to ping", b.id.HexShort(), request.NodeID.HexShort())
<-time.After(b.initialPingInterval)
b.nlock.RLock()
_, exists = b.peers[request.NodeID]
b.nlock.RUnlock()
if !exists {
b.ping(Contact{ID: request.NodeID, IP: addr.IP, Port: addr.Port})
}
}
}()
}
func randKeys(max int) []int {
keys := make([]int, max)
for k := range keys {
keys[k] = k
}
rand.Shuffle(max, func(i, j int) {
keys[i], keys[j] = keys[j], keys[i]
})
return keys
}

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package dht
import (
"net"
"testing"
"github.com/lbryio/reflector.go/dht/bits"
)
func TestBootstrapPing(t *testing.T) {
b := NewBootstrapNode(bits.Rand(), 10, bootstrapDefaultRefreshDuration)
listener, err := net.ListenPacket(Network, "127.0.0.1:54320")
if err != nil {
panic(err)
}
err = b.Connect(listener.(*net.UDPConn))
if err != nil {
t.Error(err)
}
b.Shutdown()
}

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package dht
import (
"strconv"
"time"
"github.com/lbryio/reflector.go/dht/bits"
peerproto "github.com/lbryio/reflector.go/peer"
)
const (
Network = "udp4"
DefaultPort = 4444
DefaultAnnounceRate = 10 // send at most this many announces per second
DefaultReannounceTime = 50 * time.Minute // should be a bit less than hash expiration time
// TODO: all these constants should be defaults, and should be used to set values in the standard Config. then the code should use values in the config
// TODO: alternatively, have a global Config for constants. at least that way tests can modify the values
alpha = 3 // this is the constant alpha in the spec
bucketSize = 8 // this is the constant k in the spec
nodeIDLength = bits.NumBytes // bytes. this is the constant B in the spec
messageIDLength = 20 // bytes.
udpRetry = 1
udpTimeout = 5 * time.Second
udpMaxMessageLength = 4096 // bytes. I think our longest message is ~676 bytes, so I rounded up to 1024
// scratch that. a findValue could return more than K results if a lot of nodes are storing that value, so we need more buffer
maxPeerFails = 3 // after this many failures, a peer is considered bad and will be removed from the routing table
//tExpire = 60 * time.Minute // the time after which a key/value pair expires; this is a time-to-live (TTL) from the original publication date
tRefresh = 1 * time.Hour // the time after which an otherwise unaccessed bucket must be refreshed
//tReplicate = 1 * time.Hour // the interval between Kademlia replication events, when a node is required to publish its entire database
//tNodeRefresh = 15 * time.Minute // the time after which a good node becomes questionable if it has not messaged us
compactNodeInfoLength = nodeIDLength + 6 // nodeID + 4 for IP + 2 for port
tokenSecretRotationInterval = 5 * time.Minute // how often the token-generating secret is rotated
)
// Config represents the configure of dht.
type Config struct {
// this node's address. format is `ip:port`
Address string
// the seed nodes through which we can join in dht network
SeedNodes []string
// the hex-encoded node id for this node. if string is empty, a random id will be generated
NodeID string
// print the state of the dht every X time
PrintState time.Duration
// the port that clients can use to download blobs using the LBRY peer protocol
PeerProtocolPort int
// if nonzero, an RPC server will listen to requests on this port and respond to them
RPCPort int
// the time after which the original publisher must reannounce a key/value pair
ReannounceTime time.Duration
// send at most this many announces per second
AnnounceRate int
// channel that will receive notifications about announcements
AnnounceNotificationCh chan announceNotification
}
// NewStandardConfig returns a Config pointer with default values.
func NewStandardConfig() *Config {
return &Config{
Address: "0.0.0.0:" + strconv.Itoa(DefaultPort),
SeedNodes: []string{
"lbrynet1.lbry.io:4444",
"lbrynet2.lbry.io:4444",
"lbrynet3.lbry.io:4444",
},
PeerProtocolPort: peerproto.DefaultPort,
ReannounceTime: DefaultReannounceTime,
AnnounceRate: DefaultAnnounceRate,
}
}

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package dht
import (
"bytes"
"net"
"sort"
"strconv"
"github.com/lbryio/lbry.go/errors"
"github.com/lbryio/reflector.go/dht/bits"
"github.com/lyoshenka/bencode"
)
// TODO: if routing table is ever empty (aka the node is isolated), it should re-bootstrap
// Contact contains information for contacting another node on the network
type Contact struct {
ID bits.Bitmap
IP net.IP
Port int // the udp port used for the dht
PeerPort int // the tcp port a peer can be contacted on for blob requests
}
// Equals returns true if two contacts are the same.
func (c Contact) Equals(other Contact, checkID bool) bool {
return c.IP.Equal(other.IP) && c.Port == other.Port && (!checkID || c.ID == other.ID)
}
// Addr returns the address of the contact.
func (c Contact) Addr() *net.UDPAddr {
return &net.UDPAddr{IP: c.IP, Port: c.Port}
}
// String returns a short string representation of the contact
func (c Contact) String() string {
str := c.ID.HexShort() + "@" + c.Addr().String()
if c.PeerPort != 0 {
str += "(" + strconv.Itoa(c.PeerPort) + ")"
}
return str
}
// MarshalCompact returns a compact byteslice representation of the contact
// NOTE: The compact representation always uses the tcp PeerPort, not the udp Port. This is dumb, but that's how the python daemon does it
func (c Contact) MarshalCompact() ([]byte, error) {
if c.IP.To4() == nil {
return nil, errors.Err("ip not set")
}
if c.PeerPort < 0 || c.PeerPort > 65535 {
return nil, errors.Err("invalid port")
}
var buf bytes.Buffer
buf.Write(c.IP.To4())
buf.WriteByte(byte(c.PeerPort >> 8))
buf.WriteByte(byte(c.PeerPort))
buf.Write(c.ID[:])
if buf.Len() != compactNodeInfoLength {
return nil, errors.Err("i dont know how this happened")
}
return buf.Bytes(), nil
}
// UnmarshalCompact unmarshals the compact byteslice representation of a contact.
// NOTE: The compact representation always uses the tcp PeerPort, not the udp Port. This is dumb, but that's how the python daemon does it
func (c *Contact) UnmarshalCompact(b []byte) error {
if len(b) != compactNodeInfoLength {
return errors.Err("invalid compact length")
}
c.IP = net.IPv4(b[0], b[1], b[2], b[3]).To4()
c.PeerPort = int(uint16(b[5]) | uint16(b[4])<<8)
c.ID = bits.FromBytesP(b[6:])
return nil
}
// MarshalBencode returns the serialized byte slice representation of a contact.
func (c Contact) MarshalBencode() ([]byte, error) {
return bencode.EncodeBytes([]interface{}{c.ID, c.IP.String(), c.Port})
}
// UnmarshalBencode unmarshals the serialized byte slice into the appropriate fields of the contact.
func (c *Contact) UnmarshalBencode(b []byte) error {
var raw []bencode.RawMessage
err := bencode.DecodeBytes(b, &raw)
if err != nil {
return err
}
if len(raw) != 3 {
return errors.Err("contact must have 3 elements; got %d", len(raw))
}
err = bencode.DecodeBytes(raw[0], &c.ID)
if err != nil {
return err
}
var ipStr string
err = bencode.DecodeBytes(raw[1], &ipStr)
if err != nil {
return err
}
c.IP = net.ParseIP(ipStr).To4()
if c.IP == nil {
return errors.Err("invalid IP")
}
return bencode.DecodeBytes(raw[2], &c.Port)
}
func sortByDistance(contacts []Contact, target bits.Bitmap) {
sort.Slice(contacts, func(i, j int) bool {
return contacts[i].ID.Xor(target).Cmp(contacts[j].ID.Xor(target)) < 0
})
}

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package dht
import (
"net"
"reflect"
"testing"
"github.com/lbryio/reflector.go/dht/bits"
)
func TestCompactEncoding(t *testing.T) {
c := Contact{
ID: bits.FromHexP("1c8aff71b99462464d9eeac639595ab99664be3482cb91a29d87467515c7d9158fe72aa1f1582dab07d8f8b5db277f41"),
IP: net.ParseIP("1.2.3.4"),
PeerPort: int(55<<8 + 66),
}
var compact []byte
compact, err := c.MarshalCompact()
if err != nil {
t.Fatal(err)
}
if len(compact) != compactNodeInfoLength {
t.Fatalf("got length of %d; expected %d", len(compact), compactNodeInfoLength)
}
if !reflect.DeepEqual(compact, append([]byte{1, 2, 3, 4, 55, 66}, c.ID[:]...)) {
t.Errorf("compact bytes not encoded correctly")
}
}

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dht/dht.go Normal file
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package dht
import (
"fmt"
"net"
"strings"
"time"
"github.com/lbryio/reflector.go/dht/bits"
"github.com/lbryio/lbry.go/errors"
"github.com/lbryio/lbry.go/stop"
"github.com/sirupsen/logrus"
"github.com/spf13/cast"
)
var log *logrus.Logger
func UseLogger(l *logrus.Logger) {
log = l
}
func init() {
log = logrus.StandardLogger()
//log.SetFormatter(&log.TextFormatter{ForceColors: true})
//log.SetLevel(log.DebugLevel)
}
// DHT represents a DHT node.
type DHT struct {
// config
conf *Config
// local contact
contact Contact
// node
node *Node
// stopGroup to shut down DHT
grp *stop.Group
// channel is closed when DHT joins network
joined chan struct{}
// cache for store tokens
tokenCache *tokenCache
// hashes that need to be put into the announce queue or removed from the queue
announceAddRemove chan queueEdit
}
// New returns a DHT pointer. If config is nil, then config will be set to the default config.
func New(config *Config) *DHT {
if config == nil {
config = NewStandardConfig()
}
d := &DHT{
conf: config,
grp: stop.New(),
joined: make(chan struct{}),
announceAddRemove: make(chan queueEdit),
}
return d
}
func (dht *DHT) connect(conn UDPConn) error {
contact, err := getContact(dht.conf.NodeID, dht.conf.Address)
if err != nil {
return err
}
dht.contact = contact
dht.node = NewNode(contact.ID)
dht.tokenCache = newTokenCache(dht.node, tokenSecretRotationInterval)
return dht.node.Connect(conn)
}
// Start starts the dht
func (dht *DHT) Start() error {
listener, err := net.ListenPacket(Network, dht.conf.Address)
if err != nil {
return errors.Err(err)
}
conn := listener.(*net.UDPConn)
err = dht.connect(conn)
if err != nil {
return err
}
dht.join()
log.Infof("[%s] DHT ready on %s (%d nodes found during join)",
dht.node.id.HexShort(), dht.contact.Addr().String(), dht.node.rt.Count())
dht.grp.Add(1)
go func() {
dht.runAnnouncer()
dht.grp.Done()
}()
if dht.conf.RPCPort > 0 {
dht.grp.Add(1)
go func() {
dht.runRPCServer(dht.conf.RPCPort)
dht.grp.Done()
}()
}
return nil
}
// join makes current node join the dht network.
func (dht *DHT) join() {
defer close(dht.joined) // if anyone's waiting for join to finish, they'll know its done
log.Infof("[%s] joining DHT network", dht.node.id.HexShort())
// ping nodes, which gets their real node IDs and adds them to the routing table
atLeastOneNodeResponded := false
for _, addr := range dht.conf.SeedNodes {
err := dht.Ping(addr)
if err != nil {
log.Error(errors.Prefix(fmt.Sprintf("[%s] join", dht.node.id.HexShort()), err))
} else {
atLeastOneNodeResponded = true
}
}
if !atLeastOneNodeResponded {
log.Errorf("[%s] join: no nodes responded to initial ping", dht.node.id.HexShort())
return
}
// now call iterativeFind on yourself
_, _, err := FindContacts(dht.node, dht.node.id, false, dht.grp.Child())
if err != nil {
log.Errorf("[%s] join: %s", dht.node.id.HexShort(), err.Error())
}
// TODO: after joining, refresh all buckets further away than our closest neighbor
// http://xlattice.sourceforge.net/components/protocol/kademlia/specs.html#join
}
// WaitUntilJoined blocks until the node joins the network.
func (dht *DHT) WaitUntilJoined() {
if dht.joined == nil {
panic("dht not initialized")
}
<-dht.joined
}
// Shutdown shuts down the dht
func (dht *DHT) Shutdown() {
log.Debugf("[%s] DHT shutting down", dht.node.id.HexShort())
dht.grp.StopAndWait()
dht.node.Shutdown()
log.Debugf("[%s] DHT stopped", dht.node.id.HexShort())
}
// Ping pings a given address, creates a temporary contact for sending a message, and returns an error if communication
// fails.
func (dht *DHT) Ping(addr string) error {
raddr, err := net.ResolveUDPAddr(Network, addr)
if err != nil {
return err
}
tmpNode := Contact{ID: bits.Rand(), IP: raddr.IP, Port: raddr.Port}
res := dht.node.Send(tmpNode, Request{Method: pingMethod}, SendOptions{skipIDCheck: true})
if res == nil {
return errors.Err("no response from node %s", addr)
}
return nil
}
// Get returns the list of nodes that have the blob for the given hash
func (dht *DHT) Get(hash bits.Bitmap) ([]Contact, error) {
contacts, found, err := FindContacts(dht.node, hash, true, dht.grp.Child())
if err != nil {
return nil, err
}
if found {
return contacts, nil
}
return nil, nil
}
// PrintState prints the current state of the DHT including address, nr outstanding transactions, stored hashes as well
// as current bucket information.
func (dht *DHT) PrintState() {
log.Printf("DHT node %s at %s", dht.contact.String(), time.Now().Format(time.RFC822Z))
log.Printf("Outstanding transactions: %d", dht.node.CountActiveTransactions())
log.Printf("Stored hashes: %d", dht.node.store.CountStoredHashes())
log.Printf("Buckets:")
for _, line := range strings.Split(dht.node.rt.BucketInfo(), "\n") {
log.Println(line)
}
}
func (dht DHT) ID() bits.Bitmap {
return dht.contact.ID
}
func getContact(nodeID, addr string) (Contact, error) {
var c Contact
if nodeID == "" {
c.ID = bits.Rand()
} else {
c.ID = bits.FromHexP(nodeID)
}
ip, port, err := net.SplitHostPort(addr)
if err != nil {
return c, errors.Err(err)
} else if ip == "" {
return c, errors.Err("address does not contain an IP")
} else if port == "" {
return c, errors.Err("address does not contain a port")
}
c.IP = net.ParseIP(ip)
if c.IP == nil {
return c, errors.Err("invalid ip")
}
c.Port, err = cast.ToIntE(port)
if err != nil {
return c, errors.Err(err)
}
return c, nil
}

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dht/dht_announce.go Normal file
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package dht
import (
"container/ring"
"context"
"math"
"sync"
"time"
"github.com/lbryio/lbry.go/errors"
"github.com/lbryio/reflector.go/dht/bits"
"golang.org/x/time/rate"
)
type queueEdit struct {
hash bits.Bitmap
add bool
}
const (
announceStarted = "started"
announceFinishd = "finished"
)
type announceNotification struct {
hash bits.Bitmap
action string
err error
}
// Add adds the hash to the list of hashes this node is announcing
func (dht *DHT) Add(hash bits.Bitmap) {
dht.announceAddRemove <- queueEdit{hash: hash, add: true}
}
// Remove removes the hash from the list of hashes this node is announcing
func (dht *DHT) Remove(hash bits.Bitmap) {
dht.announceAddRemove <- queueEdit{hash: hash, add: false}
}
func (dht *DHT) runAnnouncer() {
type hashAndTime struct {
hash bits.Bitmap
lastAnnounce time.Time
}
var queue *ring.Ring
hashes := make(map[bits.Bitmap]*ring.Ring)
var announceNextHash <-chan time.Time
timer := time.NewTimer(math.MaxInt64)
timer.Stop()
limitCh := make(chan time.Time)
dht.grp.Add(1)
go func() {
defer dht.grp.Done()
limiter := rate.NewLimiter(rate.Limit(dht.conf.AnnounceRate), dht.conf.AnnounceRate)
for {
err := limiter.Wait(context.Background()) // TODO: should use grp.ctx somehow? so when grp is closed, wait returns
if err != nil {
log.Error(errors.Prefix("rate limiter", err))
continue
}
select {
case limitCh <- time.Now():
case <-dht.grp.Ch():
return
}
}
}()
maintenance := time.NewTicker(1 * time.Minute)
// TODO: work to space hash announces out so they aren't bunched up around the reannounce time. track time since last announce. if its been more than the ideal time (reannounce time / numhashes), start announcing hashes early
for {
select {
case <-dht.grp.Ch():
return
case <-maintenance.C:
maxAnnounce := dht.conf.AnnounceRate * int(dht.conf.ReannounceTime.Seconds())
if len(hashes) > maxAnnounce {
// TODO: send this to slack
log.Warnf("DHT has %d hashes, but can only announce %d hashes in the %s reannounce window. Raise the announce rate or spawn more nodes.",
len(hashes), maxAnnounce, dht.conf.ReannounceTime.String())
}
case change := <-dht.announceAddRemove:
if change.add {
if _, exists := hashes[change.hash]; exists {
continue
}
r := ring.New(1)
r.Value = hashAndTime{hash: change.hash}
if queue != nil {
queue.Prev().Link(r)
}
queue = r
hashes[change.hash] = r
announceNextHash = limitCh // announce next hash ASAP
} else {
r, exists := hashes[change.hash]
if !exists {
continue
}
delete(hashes, change.hash)
if len(hashes) == 0 {
queue = ring.New(0)
announceNextHash = nil // no hashes to announce, wait indefinitely
} else {
if r == queue {
queue = queue.Next() // don't lose our pointer
}
r.Prev().Link(r.Next())
}
}
case <-announceNextHash:
dht.grp.Add(1)
ht := queue.Value.(hashAndTime)
if !ht.lastAnnounce.IsZero() {
nextAnnounce := ht.lastAnnounce.Add(dht.conf.ReannounceTime)
if nextAnnounce.After(time.Now()) {
timer.Reset(time.Until(nextAnnounce))
announceNextHash = timer.C // wait until next hash should be announced
continue
}
}
if dht.conf.AnnounceNotificationCh != nil {
dht.conf.AnnounceNotificationCh <- announceNotification{
hash: ht.hash,
action: announceStarted,
}
}
go func(hash bits.Bitmap) {
defer dht.grp.Done()
err := dht.announce(hash)
if err != nil {
log.Error(errors.Prefix("announce", err))
}
if dht.conf.AnnounceNotificationCh != nil {
dht.conf.AnnounceNotificationCh <- announceNotification{
hash: ht.hash,
action: announceFinishd,
err: err,
}
}
}(ht.hash)
queue.Value = hashAndTime{hash: ht.hash, lastAnnounce: time.Now()}
queue = queue.Next()
announceNextHash = limitCh // announce next hash ASAP
}
}
}
// Announce announces to the DHT that this node has the blob for the given hash
func (dht *DHT) announce(hash bits.Bitmap) error {
contacts, _, err := FindContacts(dht.node, hash, false, dht.grp.Child())
if err != nil {
return err
}
// self-store if we found less than K contacts, or we're closer than the farthest contact
if len(contacts) < bucketSize {
contacts = append(contacts, dht.contact)
} else if hash.Closer(dht.node.id, contacts[bucketSize-1].ID) {
contacts[bucketSize-1] = dht.contact
}
wg := &sync.WaitGroup{}
for _, c := range contacts {
wg.Add(1)
go func(c Contact) {
dht.store(hash, c)
wg.Done()
}(c)
}
wg.Wait()
return nil
}
func (dht *DHT) store(hash bits.Bitmap, c Contact) {
if dht.contact.ID == c.ID {
// self-store
c.PeerPort = dht.conf.PeerProtocolPort
dht.node.Store(hash, c)
return
}
dht.node.SendAsync(c, Request{
Method: storeMethod,
StoreArgs: &storeArgs{
BlobHash: hash,
Value: storeArgsValue{
Token: dht.tokenCache.Get(c, hash, dht.grp.Ch()),
LbryID: dht.contact.ID,
Port: dht.conf.PeerProtocolPort,
},
},
})
}

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package dht
import (
"net"
"sync"
"testing"
"time"
"github.com/lbryio/reflector.go/dht/bits"
)
func TestNodeFinder_FindNodes(t *testing.T) {
if testing.Short() {
t.Skip("skipping slow nodeFinder test")
}
bs, dhts := TestingCreateNetwork(t, 3, true, false)
defer func() {
for i := range dhts {
dhts[i].Shutdown()
}
bs.Shutdown()
}()
contacts, found, err := FindContacts(dhts[2].node, bits.Rand(), false, nil)
if err != nil {
t.Fatal(err)
}
if found {
t.Fatal("something was found, but it should not have been")
}
if len(contacts) != 3 {
t.Errorf("expected 3 node, found %d", len(contacts))
}
foundBootstrap := false
foundOne := false
foundTwo := false
for _, n := range contacts {
if n.ID.Equals(bs.id) {
foundBootstrap = true
}
if n.ID.Equals(dhts[0].node.id) {
foundOne = true
}
if n.ID.Equals(dhts[1].node.id) {
foundTwo = true
}
}
if !foundBootstrap {
t.Errorf("did not find bootstrap node %s", bs.id.Hex())
}
if !foundOne {
t.Errorf("did not find first node %s", dhts[0].node.id.Hex())
}
if !foundTwo {
t.Errorf("did not find second node %s", dhts[1].node.id.Hex())
}
}
func TestNodeFinder_FindNodes_NoBootstrap(t *testing.T) {
_, dhts := TestingCreateNetwork(t, 3, false, false)
defer func() {
for i := range dhts {
dhts[i].Shutdown()
}
}()
_, _, err := FindContacts(dhts[2].node, bits.Rand(), false, nil)
if err == nil {
t.Fatal("contact finder should have errored saying that there are no contacts in the routing table")
}
}
func TestNodeFinder_FindValue(t *testing.T) {
if testing.Short() {
t.Skip("skipping slow nodeFinder test")
}
bs, dhts := TestingCreateNetwork(t, 3, true, false)
defer func() {
for i := range dhts {
dhts[i].Shutdown()
}
bs.Shutdown()
}()
blobHashToFind := bits.Rand()
nodeToFind := Contact{ID: bits.Rand(), IP: net.IPv4(1, 2, 3, 4), Port: 5678}
dhts[0].node.store.Upsert(blobHashToFind, nodeToFind)
contacts, found, err := FindContacts(dhts[2].node, blobHashToFind, true, nil)
if err != nil {
t.Fatal(err)
}
if !found {
t.Fatal("node was not found")
}
if len(contacts) != 1 {
t.Fatalf("expected one node, found %d", len(contacts))
}
if !contacts[0].ID.Equals(nodeToFind.ID) {
t.Fatalf("found node id %s, expected %s", contacts[0].ID.Hex(), nodeToFind.ID.Hex())
}
}
func TestDHT_LargeDHT(t *testing.T) {
if testing.Short() {
t.Skip("skipping large DHT test")
}
nodes := 100
bs, dhts := TestingCreateNetwork(t, nodes, true, true)
defer func() {
for _, d := range dhts {
go d.Shutdown()
}
bs.Shutdown()
time.Sleep(1 * time.Second)
}()
wg := &sync.WaitGroup{}
ids := make([]bits.Bitmap, nodes)
for i := range ids {
ids[i] = bits.Rand()
wg.Add(1)
go func(index int) {
defer wg.Done()
err := dhts[index].announce(ids[index])
if err != nil {
t.Error("error announcing random bitmap - ", err)
}
}(i)
}
wg.Wait()
// check that each node is in at learst 1 other routing table
rtCounts := make(map[bits.Bitmap]int)
for _, d := range dhts {
for _, d2 := range dhts {
if d.node.id.Equals(d2.node.id) {
continue
}
c := d2.node.rt.GetClosest(d.node.id, 1)
if len(c) > 1 {
t.Error("rt returned more than one node when only one requested")
} else if len(c) == 1 && c[0].ID.Equals(d.node.id) {
rtCounts[d.node.id]++
}
}
}
for k, v := range rtCounts {
if v == 0 {
t.Errorf("%s was not in any routing tables", k.HexShort())
}
}
// check that each ID is stored by at least 3 nodes
storeCounts := make(map[bits.Bitmap]int)
for _, d := range dhts {
for _, id := range ids {
if len(d.node.store.Get(id)) > 0 {
storeCounts[id]++
}
}
}
for k, v := range storeCounts {
if v == 0 {
t.Errorf("%s was not stored by any nodes", k.HexShort())
}
}
}

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463
dht/message.go Normal file
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package dht
import (
"crypto/rand"
"encoding/hex"
"reflect"
"strconv"
"strings"
"github.com/lbryio/lbry.go/errors"
"github.com/lbryio/reflector.go/dht/bits"
"github.com/lyoshenka/bencode"
"github.com/spf13/cast"
)
const (
pingMethod = "ping"
storeMethod = "store"
findNodeMethod = "findNode"
findValueMethod = "findValue"
)
const (
pingSuccessResponse = "pong"
storeSuccessResponse = "OK"
)
const (
requestType = 0
responseType = 1
errorType = 2
)
const (
// these are strings because bencode requires bytestring keys
headerTypeField = "0"
headerMessageIDField = "1" // message id is 20 bytes long
headerNodeIDField = "2" // node id is 48 bytes long
headerPayloadField = "3"
headerArgsField = "4"
contactsField = "contacts"
tokenField = "token"
protocolVersionField = "protocolVersion"
)
// Message is a DHT message
type Message interface {
bencode.Marshaler
}
type messageID [messageIDLength]byte
// HexShort returns the first 8 hex characters of the hex encoded message id.
func (m messageID) HexShort() string {
return hex.EncodeToString(m[:])[:8]
}
// UnmarshalBencode takes a byte slice and unmarshals the message id.
func (m *messageID) UnmarshalBencode(encoded []byte) error {
var str string
err := bencode.DecodeBytes(encoded, &str)
if err != nil {
return err
}
copy(m[:], str)
return nil
}
// MarshallBencode returns the encoded byte slice of the message id.
func (m messageID) MarshalBencode() ([]byte, error) {
str := string(m[:])
return bencode.EncodeBytes(str)
}
func newMessageID() messageID {
var m messageID
_, err := rand.Read(m[:])
if err != nil {
panic(err)
}
return m
}
// Request represents a DHT request message
type Request struct {
ID messageID
NodeID bits.Bitmap
Method string
Arg *bits.Bitmap
StoreArgs *storeArgs
ProtocolVersion int
}
// MarshalBencode returns the serialized byte slice representation of the request
func (r Request) MarshalBencode() ([]byte, error) {
var args interface{}
if r.StoreArgs != nil {
args = r.StoreArgs
} else if r.Arg != nil {
args = []bits.Bitmap{*r.Arg}
} else {
args = []string{} // request must always have keys 0-4, so we use an empty list for PING
}
return bencode.EncodeBytes(map[string]interface{}{
headerTypeField: requestType,
headerMessageIDField: r.ID,
headerNodeIDField: r.NodeID,
headerPayloadField: r.Method,
headerArgsField: args,
})
}
// UnmarshalBencode unmarshals the serialized byte slice into the appropriate fields of the request.
func (r *Request) UnmarshalBencode(b []byte) error {
var raw struct {
ID messageID `bencode:"1"`
NodeID bits.Bitmap `bencode:"2"`
Method string `bencode:"3"`
Args bencode.RawMessage `bencode:"4"`
}
err := bencode.DecodeBytes(b, &raw)
if err != nil {
return errors.Prefix("request unmarshal", err)
}
r.ID = raw.ID
r.NodeID = raw.NodeID
r.Method = raw.Method
if r.Method == storeMethod {
r.StoreArgs = &storeArgs{} // bencode wont find the unmarshaler on a null pointer. need to fix it.
err = bencode.DecodeBytes(raw.Args, &r.StoreArgs)
if err != nil {
return errors.Prefix("request unmarshal", err)
}
} else if len(raw.Args) > 2 { // 2 because an empty list is `le`
r.Arg, r.ProtocolVersion, err = processArgsAndProtoVersion(raw.Args)
if err != nil {
return errors.Prefix("request unmarshal", err)
}
}
return nil
}
func processArgsAndProtoVersion(raw bencode.RawMessage) (arg *bits.Bitmap, version int, err error) {
var args []bencode.RawMessage
err = bencode.DecodeBytes(raw, &args)
if err != nil {
return nil, 0, err
}
if len(args) == 0 {
return nil, 0, nil
}
var extras map[string]int
err = bencode.DecodeBytes(args[len(args)-1], &extras)
if err == nil {
if v, exists := extras[protocolVersionField]; exists {
version = v
args = args[:len(args)-1]
}
}
if len(args) > 0 {
var b bits.Bitmap
err = bencode.DecodeBytes(args[0], &b)
if err != nil {
return nil, 0, err
}
arg = &b
}
return arg, version, nil
}
func (r Request) argsDebug() string {
if r.StoreArgs != nil {
return r.StoreArgs.BlobHash.HexShort() + ", " + r.StoreArgs.Value.LbryID.HexShort() + ":" + strconv.Itoa(r.StoreArgs.Value.Port)
} else if r.Arg != nil {
return r.Arg.HexShort()
}
return ""
}
type storeArgsValue struct {
Token string `bencode:"token"`
LbryID bits.Bitmap `bencode:"lbryid"`
Port int `bencode:"port"`
}
type storeArgs struct {
BlobHash bits.Bitmap
Value storeArgsValue
NodeID bits.Bitmap // original publisher id? I think this is getting fixed in the new dht stuff
SelfStore bool // this is an int on the wire
}
// MarshalBencode returns the serialized byte slice representation of the storage arguments.
func (s storeArgs) MarshalBencode() ([]byte, error) {
encodedValue, err := bencode.EncodeString(s.Value)
if err != nil {
return nil, err
}
selfStoreStr := 0
if s.SelfStore {
selfStoreStr = 1
}
return bencode.EncodeBytes([]interface{}{
s.BlobHash,
bencode.RawMessage(encodedValue),
s.NodeID,
selfStoreStr,
})
}
// UnmarshalBencode unmarshals the serialized byte slice into the appropriate fields of the store arguments.
func (s *storeArgs) UnmarshalBencode(b []byte) error {
var argsInt []bencode.RawMessage
err := bencode.DecodeBytes(b, &argsInt)
if err != nil {
return errors.Prefix("storeArgs unmarshal", err)
}
if len(argsInt) != 4 {
return errors.Err("unexpected number of fields for store args. got " + cast.ToString(len(argsInt)))
}
err = bencode.DecodeBytes(argsInt[0], &s.BlobHash)
if err != nil {
return errors.Prefix("storeArgs unmarshal", err)
}
err = bencode.DecodeBytes(argsInt[1], &s.Value)
if err != nil {
return errors.Prefix("storeArgs unmarshal", err)
}
err = bencode.DecodeBytes(argsInt[2], &s.NodeID)
if err != nil {
return errors.Prefix("storeArgs unmarshal", err)
}
var selfStore int
err = bencode.DecodeBytes(argsInt[3], &selfStore)
if err != nil {
return errors.Prefix("storeArgs unmarshal", err)
}
if selfStore == 0 {
s.SelfStore = false
} else if selfStore == 1 {
s.SelfStore = true
} else {
return errors.Err("selfstore must be 1 or 0")
}
return nil
}
// Response represents a DHT response message
type Response struct {
ID messageID
NodeID bits.Bitmap
Data string
Contacts []Contact
FindValueKey string
Token string
ProtocolVersion int
}
func (r Response) argsDebug() string {
if r.Data != "" {
return r.Data
}
str := "contacts "
if r.FindValueKey != "" {
str = "value for " + hex.EncodeToString([]byte(r.FindValueKey))[:8] + " "
}
str += "|"
for _, c := range r.Contacts {
str += c.String() + ","
}
str = strings.TrimRight(str, ",") + "|"
if r.Token != "" {
str += " token: " + hex.EncodeToString([]byte(r.Token))[:8]
}
return str
}
// MarshalBencode returns the serialized byte slice representation of the response.
func (r Response) MarshalBencode() ([]byte, error) {
data := map[string]interface{}{
headerTypeField: responseType,
headerMessageIDField: r.ID,
headerNodeIDField: r.NodeID,
}
if r.Data != "" {
// ping or store
data[headerPayloadField] = r.Data
} else if r.FindValueKey != "" {
// findValue success
if r.Token == "" {
return nil, errors.Err("response to findValue must have a token")
}
var contacts [][]byte
for _, c := range r.Contacts {
compact, err := c.MarshalCompact()
if err != nil {
return nil, err
}
contacts = append(contacts, compact)
}
data[headerPayloadField] = map[string]interface{}{
r.FindValueKey: contacts,
tokenField: r.Token,
}
} else if r.Token != "" {
// findValue failure falling back to findNode
data[headerPayloadField] = map[string]interface{}{
contactsField: r.Contacts,
tokenField: r.Token,
}
} else {
// straight up findNode
data[headerPayloadField] = r.Contacts
}
return bencode.EncodeBytes(data)
}
// UnmarshalBencode unmarshals the serialized byte slice into the appropriate fields of the store arguments.
func (r *Response) UnmarshalBencode(b []byte) error {
var raw struct {
ID messageID `bencode:"1"`
NodeID bits.Bitmap `bencode:"2"`
Data bencode.RawMessage `bencode:"3"`
}
err := bencode.DecodeBytes(b, &raw)
if err != nil {
return err
}
r.ID = raw.ID
r.NodeID = raw.NodeID
// maybe data is a string (response to ping or store)?
err = bencode.DecodeBytes(raw.Data, &r.Data)
if err == nil {
return nil
}
// maybe data is a list of contacts (response to findNode)?
err = bencode.DecodeBytes(raw.Data, &r.Contacts)
if err == nil {
return nil
}
// it must be a response to findValue
var rawData map[string]bencode.RawMessage
err = bencode.DecodeBytes(raw.Data, &rawData)
if err != nil {
return err
}
if token, ok := rawData[tokenField]; ok {
err = bencode.DecodeBytes(token, &r.Token)
if err != nil {
return err
}
delete(rawData, tokenField) // so it doesnt mess up findValue key finding below
}
if protocolVersion, ok := rawData[protocolVersionField]; ok {
err = bencode.DecodeBytes(protocolVersion, &r.ProtocolVersion)
if err != nil {
return err
}
delete(rawData, protocolVersionField) // so it doesnt mess up findValue key finding below
}
if contacts, ok := rawData[contactsField]; ok {
err = bencode.DecodeBytes(contacts, &r.Contacts)
if err != nil {
return err
}
} else {
for k, v := range rawData {
r.FindValueKey = k
var compactContacts [][]byte
err = bencode.DecodeBytes(v, &compactContacts)
if err != nil {
return err
}
for _, compact := range compactContacts {
var c Contact
err = c.UnmarshalCompact(compact)
if err != nil {
return err
}
r.Contacts = append(r.Contacts, c)
}
break
}
}
return nil
}
// Error represents a DHT error response
type Error struct {
ID messageID
NodeID bits.Bitmap
ExceptionType string
Response []string
}
// MarshalBencode returns the serialized byte slice representation of an error message.
func (e Error) MarshalBencode() ([]byte, error) {
return bencode.EncodeBytes(map[string]interface{}{
headerTypeField: errorType,
headerMessageIDField: e.ID,
headerNodeIDField: e.NodeID,
headerPayloadField: e.ExceptionType,
headerArgsField: e.Response,
})
}
// UnmarshalBencode unmarshals the serialized byte slice into the appropriate fields of the error message.
func (e *Error) UnmarshalBencode(b []byte) error {
var raw struct {
ID messageID `bencode:"1"`
NodeID bits.Bitmap `bencode:"2"`
ExceptionType string `bencode:"3"`
Args interface{} `bencode:"4"`
}
err := bencode.DecodeBytes(b, &raw)
if err != nil {
return err
}
e.ID = raw.ID
e.NodeID = raw.NodeID
e.ExceptionType = raw.ExceptionType
if reflect.TypeOf(raw.Args).Kind() == reflect.Slice {
v := reflect.ValueOf(raw.Args)
for i := 0; i < v.Len(); i++ {
e.Response = append(e.Response, cast.ToString(v.Index(i).Interface()))
}
}
return nil
}

223
dht/message_test.go Normal file

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dht/node.go Normal file
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package dht
import (
"encoding/hex"
"net"
"strings"
"sync"
"time"
"github.com/lbryio/errors.go"
"github.com/lbryio/lbry.go/stop"
"github.com/lbryio/lbry.go/util"
"github.com/lbryio/reflector.go/dht/bits"
"github.com/davecgh/go-spew/spew"
"github.com/lyoshenka/bencode"
)
// packet represents the information receive from udp.
type packet struct {
data []byte
raddr *net.UDPAddr
}
// UDPConn allows using a mocked connection to test sending/receiving data
// TODO: stop mocking this and use the real thing
type UDPConn interface {
ReadFromUDP([]byte) (int, *net.UDPAddr, error)
WriteToUDP([]byte, *net.UDPAddr) (int, error)
SetReadDeadline(time.Time) error
SetWriteDeadline(time.Time) error
Close() error
}
// RequestHandlerFunc is exported handler for requests.
type RequestHandlerFunc func(addr *net.UDPAddr, request Request)
// Node is a type representation of a node on the network.
type Node struct {
// the node's id
id bits.Bitmap
// UDP connection for sending and receiving data
conn UDPConn
// true if we've closed the connection on purpose
connClosed bool
// token manager
tokens *tokenManager
// map of outstanding transactions + mutex
txLock *sync.RWMutex
transactions map[messageID]*transaction
// routing table
rt *routingTable
// data store
store *contactStore
// overrides for request handlers
requestHandler RequestHandlerFunc
// stop the node neatly and clean up after itself
grp *stop.Group
}
// NewNode returns an initialized Node's pointer.
func NewNode(id bits.Bitmap) *Node {
return &Node{
id: id,
rt: newRoutingTable(id),
store: newStore(),
txLock: &sync.RWMutex{},
transactions: make(map[messageID]*transaction),
grp: stop.New(),
tokens: &tokenManager{},
}
}
// Connect connects to the given connection and starts any background threads necessary
func (n *Node) Connect(conn UDPConn) error {
n.conn = conn
n.tokens.Start(tokenSecretRotationInterval)
go func() {
// stop tokens and close the connection when we're shutting down
<-n.grp.Ch()
n.tokens.Stop()
n.connClosed = true
err := n.conn.Close()
if err != nil {
log.Error("error closing node connection on shutdown - ", err)
}
}()
packets := make(chan packet)
n.grp.Add(1)
go func() {
defer n.grp.Done()
buf := make([]byte, udpMaxMessageLength)
for {
bytesRead, raddr, err := n.conn.ReadFromUDP(buf)
if err != nil {
if n.connClosed {
return
}
log.Errorf("udp read error: %v", err)
continue
} else if raddr == nil {
log.Errorf("udp read with no raddr")
continue
}
data := make([]byte, bytesRead)
copy(data, buf[:bytesRead]) // slices use the same underlying array, so we need a new one for each packet
select { // needs select here because packet consumer can quit and the packets channel gets filled up and blocks
case packets <- packet{data: data, raddr: raddr}:
case <-n.grp.Ch():
return
}
}
}()
n.grp.Add(1)
go func() {
defer n.grp.Done()
var pkt packet
for {
select {
case pkt = <-packets:
n.handlePacket(pkt)
case <-n.grp.Ch():
return
}
}
}()
// TODO: turn this back on when you're sure it works right
n.grp.Add(1)
go func() {
defer n.grp.Done()
n.startRoutingTableGrooming()
}()
return nil
}
// Shutdown shuts down the node
func (n *Node) Shutdown() {
log.Debugf("[%s] node shutting down", n.id.HexShort())
n.grp.StopAndWait()
log.Debugf("[%s] node stopped", n.id.HexShort())
}
// handlePacket handles packets received from udp.
func (n *Node) handlePacket(pkt packet) {
//log.Debugf("[%s] Received message from %s (%d bytes) %s", n.id.HexShort(), pkt.raddr.String(), len(pkt.data), hex.EncodeToString(pkt.data))
if !util.InSlice(string(pkt.data[0:5]), []string{"d1:0i", "di0ei"}) {
log.Errorf("[%s] data is not a well-formatted dict: (%d bytes) %s", n.id.HexShort(), len(pkt.data), hex.EncodeToString(pkt.data))
return
}
// the following is a bit of a hack, but it lets us avoid decoding every message twice
// it depends on the data being a dict with 0 as the first key (so it starts with "d1:0i") and the message type as the first value
// TODO: test this more thoroughly
switch pkt.data[5] {
case '0' + requestType:
request := Request{}
err := bencode.DecodeBytes(pkt.data, &request)
if err != nil {
log.Errorf("[%s] error decoding request from %s: %s: (%d bytes) %s", n.id.HexShort(), pkt.raddr.String(), err.Error(), len(pkt.data), hex.EncodeToString(pkt.data))
return
}
log.Debugf("[%s] query %s: received request from %s: %s(%s)", n.id.HexShort(), request.ID.HexShort(), request.NodeID.HexShort(), request.Method, request.argsDebug())
n.handleRequest(pkt.raddr, request)
case '0' + responseType:
response := Response{}
err := bencode.DecodeBytes(pkt.data, &response)
if err != nil {
log.Errorf("[%s] error decoding response from %s: %s: (%d bytes) %s", n.id.HexShort(), pkt.raddr.String(), err.Error(), len(pkt.data), hex.EncodeToString(pkt.data))
return
}
log.Debugf("[%s] query %s: received response from %s: %s", n.id.HexShort(), response.ID.HexShort(), response.NodeID.HexShort(), response.argsDebug())
n.handleResponse(pkt.raddr, response)
case '0' + errorType:
e := Error{}
err := bencode.DecodeBytes(pkt.data, &e)
if err != nil {
log.Errorf("[%s] error decoding error from %s: %s: (%d bytes) %s", n.id.HexShort(), pkt.raddr.String(), err.Error(), len(pkt.data), hex.EncodeToString(pkt.data))
return
}
log.Debugf("[%s] query %s: received error from %s: %s", n.id.HexShort(), e.ID.HexShort(), e.NodeID.HexShort(), e.ExceptionType)
n.handleError(pkt.raddr, e)
default:
log.Errorf("[%s] invalid message type: %s", n.id.HexShort(), string(pkt.data[5]))
return
}
}
// handleRequest handles the requests received from udp.
func (n *Node) handleRequest(addr *net.UDPAddr, request Request) {
if request.NodeID.Equals(n.id) {
log.Warn("ignoring self-request")
return
}
// if a handler is overridden, call it instead
if n.requestHandler != nil {
n.requestHandler(addr, request)
return
}
switch request.Method {
default:
//n.sendMessage(addr, Error{ID: request.ID, NodeID: n.id, ExceptionType: "invalid-request-method"})
log.Errorln("invalid request method")
return
case pingMethod:
err := n.sendMessage(addr, Response{ID: request.ID, NodeID: n.id, Data: pingSuccessResponse})
if err != nil {
log.Error("error sending 'pingmethod' response message - ", err)
}
case storeMethod:
// TODO: we should be sending the IP in the request, not just using the sender's IP
// TODO: should we be using StoreArgs.NodeID or StoreArgs.Value.LbryID ???
if n.tokens.Verify(request.StoreArgs.Value.Token, request.NodeID, addr) {
n.Store(request.StoreArgs.BlobHash, Contact{ID: request.StoreArgs.NodeID, IP: addr.IP, Port: addr.Port, PeerPort: request.StoreArgs.Value.Port})
err := n.sendMessage(addr, Response{ID: request.ID, NodeID: n.id, Data: storeSuccessResponse})
if err != nil {
log.Error("error sending 'storemethod' response message - ", err)
}
} else {
err := n.sendMessage(addr, Error{ID: request.ID, NodeID: n.id, ExceptionType: "invalid-token"})
if err != nil {
log.Error("error sending 'storemethod'response message for invalid-token - ", err)
}
}
case findNodeMethod:
if request.Arg == nil {
log.Errorln("request is missing arg")
return
}
err := n.sendMessage(addr, Response{
ID: request.ID,
NodeID: n.id,
Contacts: n.rt.GetClosest(*request.Arg, bucketSize),
})
if err != nil {
log.Error("error sending 'findnodemethod' response message - ", err)
}
case findValueMethod:
if request.Arg == nil {
log.Errorln("request is missing arg")
return
}
res := Response{
ID: request.ID,
NodeID: n.id,
Token: n.tokens.Get(request.NodeID, addr),
}
if contacts := n.store.Get(*request.Arg); len(contacts) > 0 {
res.FindValueKey = request.Arg.RawString()
res.Contacts = contacts
} else {
res.Contacts = n.rt.GetClosest(*request.Arg, bucketSize)
}
err := n.sendMessage(addr, res)
if err != nil {
log.Error("error sending 'findvaluemethod' response message - ", err)
}
}
// nodes that send us requests should not be inserted, only refreshed.
// the routing table must only contain "good" nodes, which are nodes that reply to our requests
// if a node is already good (aka in the table), its fine to refresh it
// http://www.bittorrent.org/beps/bep_0005.html#routing-table
n.rt.Fresh(Contact{ID: request.NodeID, IP: addr.IP, Port: addr.Port})
}
// handleResponse handles responses received from udp.
func (n *Node) handleResponse(addr *net.UDPAddr, response Response) {
tx := n.txFind(response.ID, Contact{ID: response.NodeID, IP: addr.IP, Port: addr.Port})
if tx != nil {
select {
case tx.res <- response:
default:
//log.Errorf("[%s] query %s: response received, but tx has no listener or multiple responses to the same tx", n.id.HexShort(), response.ID.HexShort())
}
}
n.rt.Update(Contact{ID: response.NodeID, IP: addr.IP, Port: addr.Port})
}
// handleError handles errors received from udp.
func (n *Node) handleError(addr *net.UDPAddr, e Error) {
spew.Dump(e)
n.rt.Fresh(Contact{ID: e.NodeID, IP: addr.IP, Port: addr.Port})
}
// send sends data to a udp address
func (n *Node) sendMessage(addr *net.UDPAddr, data Message) error {
encoded, err := bencode.EncodeBytes(data)
if err != nil {
return errors.Err(err)
}
if req, ok := data.(Request); ok {
log.Debugf("[%s] query %s: sending request to %s (%d bytes) %s(%s)",
n.id.HexShort(), req.ID.HexShort(), addr.String(), len(encoded), req.Method, req.argsDebug())
} else if res, ok := data.(Response); ok {
log.Debugf("[%s] query %s: sending response to %s (%d bytes) %s",
n.id.HexShort(), res.ID.HexShort(), addr.String(), len(encoded), res.argsDebug())
} else {
log.Debugf("[%s] (%d bytes) %s", n.id.HexShort(), len(encoded), spew.Sdump(data))
}
err = n.conn.SetWriteDeadline(time.Now().Add(5 * time.Second))
if err != nil {
if n.connClosed {
return nil
}
log.Error("error setting write deadline - ", err)
}
_, err = n.conn.WriteToUDP(encoded, addr)
return errors.Err(err)
}
// transaction represents a single query to the dht. it stores the queried contact, the request, and the response channel
type transaction struct {
contact Contact
req Request
res chan Response
skipIDCheck bool
}
// insert adds a transaction to the manager.
func (n *Node) txInsert(tx *transaction) {
n.txLock.Lock()
defer n.txLock.Unlock()
n.transactions[tx.req.ID] = tx
}
// delete removes a transaction from the manager.
func (n *Node) txDelete(id messageID) {
n.txLock.Lock()
defer n.txLock.Unlock()
delete(n.transactions, id)
}
// Find finds a transaction for the given id and contact
func (n *Node) txFind(id messageID, c Contact) *transaction {
n.txLock.RLock()
defer n.txLock.RUnlock()
t, ok := n.transactions[id]
if !ok || !t.contact.Equals(c, !t.skipIDCheck) {
return nil
}
return t
}
// SendOptions controls the behavior of send calls
type SendOptions struct {
skipIDCheck bool
}
// SendAsync sends a transaction and returns a channel that will eventually contain the transaction response
// The response channel is closed when the transaction is completed or times out.
func (n *Node) SendAsync(contact Contact, req Request, options ...SendOptions) <-chan *Response {
ch := make(chan *Response, 1)
if contact.ID.Equals(n.id) {
log.Error("sending query to self")
close(ch)
return ch
}
go func() {
defer close(ch)
req.ID = newMessageID()
req.NodeID = n.id
tx := &transaction{
contact: contact,
req: req,
res: make(chan Response),
}
if len(options) > 0 && options[0].skipIDCheck {
tx.skipIDCheck = true
}
n.txInsert(tx)
defer n.txDelete(tx.req.ID)
for i := 0; i < udpRetry; i++ {
err := n.sendMessage(contact.Addr(), tx.req)
if err != nil {
if !strings.Contains(err.Error(), "use of closed network connection") { // this only happens on localhost. real UDP has no connections
log.Error("send error: ", err)
}
continue
}
select {
case res := <-tx.res:
ch <- &res
return
case <-n.grp.Ch():
return
case <-time.After(udpTimeout):
}
}
// notify routing table about a failure to respond
n.rt.Fail(tx.contact)
}()
return ch
}
// Send sends a transaction and blocks until the response is available. It returns a response, or nil
// if the transaction timed out.
func (n *Node) Send(contact Contact, req Request, options ...SendOptions) *Response {
return <-n.SendAsync(contact, req, options...)
}
// CountActiveTransactions returns the number of transactions in the manager
func (n *Node) CountActiveTransactions() int {
n.txLock.Lock()
defer n.txLock.Unlock()
return len(n.transactions)
}
func (n *Node) startRoutingTableGrooming() {
refreshTicker := time.NewTicker(tRefresh / 5) // how often to check for buckets that need to be refreshed
for {
select {
case <-refreshTicker.C:
RoutingTableRefresh(n, tRefresh, n.grp.Child())
case <-n.grp.Ch():
return
}
}
}
// Store stores a node contact in the node's contact store.
func (n *Node) Store(hash bits.Bitmap, c Contact) {
n.store.Upsert(hash, c)
}
//AddKnownNode adds a known-good node to the routing table
func (n *Node) AddKnownNode(c Contact) {
n.rt.Update(c)
}

338
dht/node_finder.go Normal file
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package dht
import (
"sync"
"time"
"github.com/lbryio/lbry.go/crypto"
"github.com/lbryio/lbry.go/errors"
"github.com/lbryio/lbry.go/stop"
"github.com/lbryio/reflector.go/dht/bits"
"github.com/sirupsen/logrus"
"github.com/uber-go/atomic"
)
// TODO: iterativeFindValue may be stopping early. if it gets a response with one peer, it should keep going because other nodes may know about more peers that have that blob
// TODO: or, it should try a tcp handshake with peers as it finds them, to make sure they are still online and have the blob
var cfLog *logrus.Logger
func init() {
cfLog = logrus.StandardLogger()
}
func NodeFinderUseLogger(l *logrus.Logger) {
cfLog = l
}
type contactFinder struct {
findValue bool // true if we're using findValue
target bits.Bitmap
node *Node
grp *stop.Group
findValueMutex *sync.Mutex
findValueResult []Contact
activeContactsMutex *sync.Mutex
activeContacts []Contact
shortlistMutex *sync.Mutex
shortlist []Contact
shortlistAdded map[bits.Bitmap]bool
closestContactMutex *sync.RWMutex
closestContact *Contact
notGettingCloser *atomic.Bool
}
func FindContacts(node *Node, target bits.Bitmap, findValue bool, parentGrp *stop.Group) ([]Contact, bool, error) {
cf := &contactFinder{
node: node,
target: target,
findValue: findValue,
findValueMutex: &sync.Mutex{},
activeContactsMutex: &sync.Mutex{},
shortlistMutex: &sync.Mutex{},
shortlistAdded: make(map[bits.Bitmap]bool),
grp: stop.New(parentGrp),
closestContactMutex: &sync.RWMutex{},
notGettingCloser: atomic.NewBool(false),
}
return cf.Find()
}
func (cf *contactFinder) Stop() {
cf.grp.StopAndWait()
}
func (cf *contactFinder) Find() ([]Contact, bool, error) {
if cf.findValue {
cf.debug("starting iterativeFindValue")
} else {
cf.debug("starting iterativeFindNode")
}
cf.appendNewToShortlist(cf.node.rt.GetClosest(cf.target, alpha))
if len(cf.shortlist) == 0 {
return nil, false, errors.Err("[%s] find %s: no contacts in routing table", cf.node.id.HexShort(), cf.target.HexShort())
}
go cf.cycle(false)
timeout := 5 * time.Second
CycleLoop:
for {
select {
case <-time.After(timeout):
go cf.cycle(false)
case <-cf.grp.Ch():
break CycleLoop
}
}
// TODO: what to do if we have less than K active contacts, shortlist is empty, but we have other contacts in our routing table whom we have not contacted. prolly contact them
var contacts []Contact
var found bool
if cf.findValue && len(cf.findValueResult) > 0 {
contacts = cf.findValueResult
found = true
} else {
contacts = cf.activeContacts
if len(contacts) > bucketSize {
contacts = contacts[:bucketSize]
}
}
cf.Stop()
return contacts, found, nil
}
// cycle does a single cycle of sending alpha probes and checking results against closestNode
func (cf *contactFinder) cycle(bigCycle bool) {
cycleID := crypto.RandString(6)
if bigCycle {
cf.debug("LAUNCHING CYCLE %s, AND ITS A BIG CYCLE", cycleID)
} else {
cf.debug("LAUNCHING CYCLE %s", cycleID)
}
defer cf.debug("CYCLE %s DONE", cycleID)
cf.closestContactMutex.RLock()
closestContact := cf.closestContact
cf.closestContactMutex.RUnlock()
var wg sync.WaitGroup
ch := make(chan *Contact)
limit := alpha
if bigCycle {
limit = bucketSize
}
for i := 0; i < limit; i++ {
wg.Add(1)
go func() {
defer wg.Done()
ch <- cf.probe(cycleID)
}()
}
go func() {
wg.Wait()
close(ch)
}()
foundCloser := false
for {
c, more := <-ch
if !more {
break
}
if c != nil && (closestContact == nil || cf.target.Closer(c.ID, closestContact.ID)) {
if closestContact != nil {
cf.debug("|%s| best contact improved: %s -> %s", cycleID, closestContact.ID.HexShort(), c.ID.HexShort())
} else {
cf.debug("|%s| best contact starting at %s", cycleID, c.ID.HexShort())
}
foundCloser = true
closestContact = c
}
}
if cf.isSearchFinished() {
cf.grp.Stop()
return
}
if foundCloser {
cf.closestContactMutex.Lock()
// have to check again after locking in case other probes found a closer one in the meantime
if cf.closestContact == nil || cf.target.Closer(closestContact.ID, cf.closestContact.ID) {
cf.closestContact = closestContact
}
cf.closestContactMutex.Unlock()
go cf.cycle(false)
} else if !bigCycle {
cf.debug("|%s| no improvement, running big cycle", cycleID)
go cf.cycle(true)
} else {
// big cycle ran and there was no improvement, so we're done
cf.debug("|%s| big cycle ran, still no improvement", cycleID)
cf.notGettingCloser.Store(true)
}
}
// probe sends a single probe, updates the lists, and returns the closest contact it found
func (cf *contactFinder) probe(cycleID string) *Contact {
maybeContact := cf.popFromShortlist()
if maybeContact == nil {
cf.debug("|%s| no contacts in shortlist, returning", cycleID)
return nil
}
c := *maybeContact
if c.ID.Equals(cf.node.id) {
return nil
}
cf.debug("|%s| probe %s: launching", cycleID, c.ID.HexShort())
req := Request{Arg: &cf.target}
if cf.findValue {
req.Method = findValueMethod
} else {
req.Method = findNodeMethod
}
var res *Response
resCh := cf.node.SendAsync(c, req)
select {
case res = <-resCh:
case <-cf.grp.Ch():
cf.debug("|%s| probe %s: canceled", cycleID, c.ID.HexShort())
return nil
}
if res == nil {
cf.debug("|%s| probe %s: req canceled or timed out", cycleID, c.ID.HexShort())
return nil
}
if cf.findValue && res.FindValueKey != "" {
cf.debug("|%s| probe %s: got value", cycleID, c.ID.HexShort())
cf.findValueMutex.Lock()
cf.findValueResult = res.Contacts
cf.findValueMutex.Unlock()
cf.grp.Stop()
return nil
}
cf.debug("|%s| probe %s: got %s", cycleID, c.ID.HexShort(), res.argsDebug())
cf.insertIntoActiveList(c)
cf.appendNewToShortlist(res.Contacts)
cf.activeContactsMutex.Lock()
contacts := cf.activeContacts
if len(contacts) > bucketSize {
contacts = contacts[:bucketSize]
}
contactsStr := ""
for _, c := range contacts {
contactsStr += c.ID.HexShort() + ", "
}
cf.activeContactsMutex.Unlock()
return cf.closest(res.Contacts...)
}
// appendNewToShortlist appends any new contacts to the shortlist and sorts it by distance
// contacts that have already been added to the shortlist in the past are ignored
func (cf *contactFinder) appendNewToShortlist(contacts []Contact) {
cf.shortlistMutex.Lock()
defer cf.shortlistMutex.Unlock()
for _, c := range contacts {
if _, ok := cf.shortlistAdded[c.ID]; !ok {
cf.shortlist = append(cf.shortlist, c)
cf.shortlistAdded[c.ID] = true
}
}
sortByDistance(cf.shortlist, cf.target)
}
// popFromShortlist pops the first contact off the shortlist and returns it
func (cf *contactFinder) popFromShortlist() *Contact {
cf.shortlistMutex.Lock()
defer cf.shortlistMutex.Unlock()
if len(cf.shortlist) == 0 {
return nil
}
first := cf.shortlist[0]
cf.shortlist = cf.shortlist[1:]
return &first
}
// insertIntoActiveList inserts the contact into appropriate place in the list of active contacts (sorted by distance)
func (cf *contactFinder) insertIntoActiveList(contact Contact) {
cf.activeContactsMutex.Lock()
defer cf.activeContactsMutex.Unlock()
inserted := false
for i, n := range cf.activeContacts {
if cf.target.Closer(contact.ID, n.ID) {
cf.activeContacts = append(cf.activeContacts[:i], append([]Contact{contact}, cf.activeContacts[i:]...)...)
inserted = true
break
}
}
if !inserted {
cf.activeContacts = append(cf.activeContacts, contact)
}
}
// isSearchFinished returns true if the search is done and should be stopped
func (cf *contactFinder) isSearchFinished() bool {
if cf.findValue && len(cf.findValueResult) > 0 {
return true
}
select {
case <-cf.grp.Ch():
return true
default:
}
if cf.notGettingCloser.Load() {
return true
}
cf.activeContactsMutex.Lock()
defer cf.activeContactsMutex.Unlock()
return len(cf.activeContacts) >= bucketSize
}
func (cf *contactFinder) debug(format string, args ...interface{}) {
args = append([]interface{}{cf.node.id.HexShort()}, append([]interface{}{cf.target.HexShort()}, args...)...)
cfLog.Debugf("[%s] find %s: "+format, args...)
}
func (cf *contactFinder) closest(contacts ...Contact) *Contact {
if len(contacts) == 0 {
return nil
}
closest := contacts[0]
for _, c := range contacts {
if cf.target.Closer(c.ID, closest.ID) {
closest = c
}
}
return &closest
}

422
dht/node_test.go Normal file
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package dht
import (
"net"
"testing"
"time"
"github.com/lbryio/reflector.go/dht/bits"
"github.com/lyoshenka/bencode"
)
func TestPing(t *testing.T) {
dhtNodeID := bits.Rand()
testNodeID := bits.Rand()
conn := newTestUDPConn("127.0.0.1:21217")
dht := New(&Config{Address: "127.0.0.1:21216", NodeID: dhtNodeID.Hex()})
err := dht.connect(conn)
if err != nil {
t.Fatal(err)
}
defer dht.Shutdown()
messageID := newMessageID()
data, err := bencode.EncodeBytes(map[string]interface{}{
headerTypeField: requestType,
headerMessageIDField: messageID,
headerNodeIDField: testNodeID.RawString(),
headerPayloadField: "ping",
headerArgsField: []string{},
})
if err != nil {
panic(err)
}
conn.toRead <- testUDPPacket{addr: conn.addr, data: data}
timer := time.NewTimer(3 * time.Second)
select {
case <-timer.C:
t.Error("timeout")
case resp := <-conn.writes:
var response map[string]interface{}
err := bencode.DecodeBytes(resp.data, &response)
if err != nil {
t.Fatal(err)
}
if len(response) != 4 {
t.Errorf("expected 4 response fields, got %d", len(response))
}
_, ok := response[headerTypeField]
if !ok {
t.Error("missing type field")
} else {
rType, ok := response[headerTypeField].(int64)
if !ok {
t.Error("type is not an integer")
} else if rType != responseType {
t.Error("unexpected response type")
}
}
_, ok = response[headerMessageIDField]
if !ok {
t.Error("missing message id field")
} else {
rMessageID, ok := response[headerMessageIDField].(string)
if !ok {
t.Error("message ID is not a string")
} else if rMessageID != string(messageID[:]) {
t.Error("unexpected message ID")
}
}
_, ok = response[headerNodeIDField]
if !ok {
t.Error("missing node id field")
} else {
rNodeID, ok := response[headerNodeIDField].(string)
if !ok {
t.Error("node ID is not a string")
} else if rNodeID != dhtNodeID.RawString() {
t.Error("unexpected node ID")
}
}
_, ok = response[headerPayloadField]
if !ok {
t.Error("missing payload field")
} else {
rNodeID, ok := response[headerPayloadField].(string)
if !ok {
t.Error("payload is not a string")
} else if rNodeID != pingSuccessResponse {
t.Error("did not pong")
}
}
}
}
func TestStore(t *testing.T) {
dhtNodeID := bits.Rand()
testNodeID := bits.Rand()
conn := newTestUDPConn("127.0.0.1:21217")
dht := New(&Config{Address: "127.0.0.1:21216", NodeID: dhtNodeID.Hex()})
err := dht.connect(conn)
if err != nil {
t.Fatal(err)
}
defer dht.Shutdown()
messageID := newMessageID()
blobHashToStore := bits.Rand()
storeRequest := Request{
ID: messageID,
NodeID: testNodeID,
Method: storeMethod,
StoreArgs: &storeArgs{
BlobHash: blobHashToStore,
Value: storeArgsValue{
Token: dht.node.tokens.Get(testNodeID, conn.addr),
LbryID: testNodeID,
Port: 9999,
},
NodeID: testNodeID,
},
}
_ = "64 " + // start message
"313A30 693065" + // type: 0
"313A31 3230 3A 6EB490B5788B63F0F7E6D92352024D0CBDEC2D3A" + // message id
"313A32 3438 3A 7CE1B831DEC8689E44F80F547D2DEA171F6A625E1A4FF6C6165E645F953103DABEB068A622203F859C6C64658FD3AA3B" + // node id
"313A33 35 3A 73746F7265" + // method
"313A34 6C" + // start args list
"3438 3A 3214D6C2F77FCB5E8D5FC07EDAFBA614F031CE8B2EAB49F924F8143F6DFBADE048D918710072FB98AB1B52B58F4E1468" + // block hash
"64" + // start value dict
"363A6C6272796964 3438 3A 7CE1B831DEC8689E44F80F547D2DEA171F6A625E1A4FF6C6165E645F953103DABEB068A622203F859C6C64658FD3AA3B" + // lbry id
"343A706F7274 69 33333333 65" + // port
"353A746F6B656E 3438 3A 17C2D8E1E48EF21567FE4AD5C8ED944B798D3B65AB58D0C9122AD6587D1B5FED472EA2CB12284CEFA1C21EFF302322BD" + // token
"65" + // end value dict
"3438 3A 7CE1B831DEC8689E44F80F547D2DEA171F6A625E1A4FF6C6165E645F953103DABEB068A622203F859C6C64658FD3AA3B" + // node id
"693065" + // self store (integer)
"65" + // end args list
"65" // end message
data, err := bencode.EncodeBytes(storeRequest)
if err != nil {
t.Fatal(err)
}
conn.toRead <- testUDPPacket{addr: conn.addr, data: data}
timer := time.NewTimer(3 * time.Second)
var response map[string]interface{}
select {
case <-timer.C:
t.Fatal("timeout")
case resp := <-conn.writes:
err := bencode.DecodeBytes(resp.data, &response)
if err != nil {
t.Fatal(err)
}
}
verifyResponse(t, response, messageID, dhtNodeID.RawString())
_, ok := response[headerPayloadField]
if !ok {
t.Error("missing payload field")
} else {
rNodeID, ok := response[headerPayloadField].(string)
if !ok {
t.Error("payload is not a string")
} else if rNodeID != storeSuccessResponse {
t.Error("did not return OK")
}
}
if dht.node.store.CountStoredHashes() != 1 {
t.Error("dht store has wrong number of items")
}
items := dht.node.store.Get(blobHashToStore)
if len(items) != 1 {
t.Error("list created in store, but nothing in list")
}
if !items[0].ID.Equals(testNodeID) {
t.Error("wrong value stored")
}
}
func TestFindNode(t *testing.T) {
dhtNodeID := bits.Rand()
testNodeID := bits.Rand()
conn := newTestUDPConn("127.0.0.1:21217")
dht := New(&Config{Address: "127.0.0.1:21216", NodeID: dhtNodeID.Hex()})
err := dht.connect(conn)
if err != nil {
t.Fatal(err)
}
defer dht.Shutdown()
nodesToInsert := 3
var nodes []Contact
for i := 0; i < nodesToInsert; i++ {
n := Contact{ID: bits.Rand(), IP: net.ParseIP("127.0.0.1"), Port: 10000 + i}
nodes = append(nodes, n)
dht.node.rt.Update(n)
}
messageID := newMessageID()
blobHashToFind := bits.Rand()
request := Request{
ID: messageID,
NodeID: testNodeID,
Method: findNodeMethod,
Arg: &blobHashToFind,
}
data, err := bencode.EncodeBytes(request)
if err != nil {
t.Fatal(err)
}
conn.toRead <- testUDPPacket{addr: conn.addr, data: data}
timer := time.NewTimer(3 * time.Second)
var response map[string]interface{}
select {
case <-timer.C:
t.Fatal("timeout")
case resp := <-conn.writes:
err := bencode.DecodeBytes(resp.data, &response)
if err != nil {
t.Fatal(err)
}
}
verifyResponse(t, response, messageID, dhtNodeID.RawString())
_, ok := response[headerPayloadField]
if !ok {
t.Fatal("missing payload field")
}
contacts, ok := response[headerPayloadField].([]interface{})
if !ok {
t.Fatal("payload is not a list")
}
verifyContacts(t, contacts, nodes)
}
func TestFindValueExisting(t *testing.T) {
dhtNodeID := bits.Rand()
testNodeID := bits.Rand()
conn := newTestUDPConn("127.0.0.1:21217")
dht := New(&Config{Address: "127.0.0.1:21216", NodeID: dhtNodeID.Hex()})
err := dht.connect(conn)
if err != nil {
t.Fatal(err)
}
defer dht.Shutdown()
nodesToInsert := 3
for i := 0; i < nodesToInsert; i++ {
n := Contact{ID: bits.Rand(), IP: net.ParseIP("127.0.0.1"), Port: 10000 + i}
dht.node.rt.Update(n)
}
//data, _ := hex.DecodeString("64313a30693065313a3132303a7de8e57d34e316abbb5a8a8da50dcd1ad4c80e0f313a3234383a7ce1b831dec8689e44f80f547d2dea171f6a625e1a4ff6c6165e645f953103dabeb068a622203f859c6c64658fd3aa3b313a33393a66696e6456616c7565313a346c34383aa47624b8e7ee1e54df0c45e2eb858feb0b705bd2a78d8b739be31ba188f4bd6f56b371c51fecc5280d5fd26ba4168e966565")
messageID := newMessageID()
valueToFind := bits.Rand()
nodeToFind := Contact{ID: bits.Rand(), IP: net.ParseIP("1.2.3.4"), PeerPort: 1286}
dht.node.store.Upsert(valueToFind, nodeToFind)
dht.node.store.Upsert(valueToFind, nodeToFind)
dht.node.store.Upsert(valueToFind, nodeToFind)
request := Request{
ID: messageID,
NodeID: testNodeID,
Method: findValueMethod,
Arg: &valueToFind,
}
data, err := bencode.EncodeBytes(request)
if err != nil {
t.Fatal(err)
}
conn.toRead <- testUDPPacket{addr: conn.addr, data: data}
timer := time.NewTimer(3 * time.Second)
var response map[string]interface{}
select {
case <-timer.C:
t.Fatal("timeout")
case resp := <-conn.writes:
err := bencode.DecodeBytes(resp.data, &response)
if err != nil {
t.Fatal(err)
}
}
verifyResponse(t, response, messageID, dhtNodeID.RawString())
_, ok := response[headerPayloadField]
if !ok {
t.Fatal("missing payload field")
}
payload, ok := response[headerPayloadField].(map[string]interface{})
if !ok {
t.Fatal("payload is not a dictionary")
}
compactContacts, ok := payload[valueToFind.RawString()]
if !ok {
t.Fatal("payload is missing key for search value")
}
contacts, ok := compactContacts.([]interface{})
if !ok {
t.Fatal("search results are not a list")
}
verifyCompactContacts(t, contacts, []Contact{nodeToFind})
}
func TestFindValueFallbackToFindNode(t *testing.T) {
dhtNodeID := bits.Rand()
testNodeID := bits.Rand()
conn := newTestUDPConn("127.0.0.1:21217")
dht := New(&Config{Address: "127.0.0.1:21216", NodeID: dhtNodeID.Hex()})
err := dht.connect(conn)
if err != nil {
t.Fatal(err)
}
defer dht.Shutdown()
nodesToInsert := 3
var nodes []Contact
for i := 0; i < nodesToInsert; i++ {
n := Contact{ID: bits.Rand(), IP: net.ParseIP("127.0.0.1"), Port: 10000 + i}
nodes = append(nodes, n)
dht.node.rt.Update(n)
}
messageID := newMessageID()
valueToFind := bits.Rand()
request := Request{
ID: messageID,
NodeID: testNodeID,
Method: findValueMethod,
Arg: &valueToFind,
}
data, err := bencode.EncodeBytes(request)
if err != nil {
t.Fatal(err)
}
conn.toRead <- testUDPPacket{addr: conn.addr, data: data}
timer := time.NewTimer(3 * time.Second)
var response map[string]interface{}
select {
case <-timer.C:
t.Fatal("timeout")
case resp := <-conn.writes:
err := bencode.DecodeBytes(resp.data, &response)
if err != nil {
t.Fatal(err)
}
}
verifyResponse(t, response, messageID, dhtNodeID.RawString())
_, ok := response[headerPayloadField]
if !ok {
t.Fatal("missing payload field")
}
payload, ok := response[headerPayloadField].(map[string]interface{})
if !ok {
t.Fatal("payload is not a dictionary")
}
contactsList, ok := payload[contactsField]
if !ok {
t.Fatal("payload is missing 'contacts' key")
}
contacts, ok := contactsList.([]interface{})
if !ok {
t.Fatal("'contacts' is not a list")
}
verifyContacts(t, contacts, nodes)
}

463
dht/routing_table.go Normal file
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package dht
import (
"encoding/json"
"fmt"
"net"
"strconv"
"strings"
"sync"
"time"
"github.com/lbryio/lbry.go/errors"
"github.com/lbryio/lbry.go/stop"
"github.com/lbryio/reflector.go/dht/bits"
)
// TODO: if routing table is ever empty (aka the node is isolated), it should re-bootstrap
// TODO: use a tree with bucket splitting instead of a fixed bucket list. include jack's optimization (see link in commit mesg)
// https://github.com/lbryio/lbry/pull/1211/commits/341b27b6d21ac027671d42458826d02735aaae41
// peer is a contact with extra information
type peer struct {
Contact Contact
Distance bits.Bitmap
LastActivity time.Time
// LastReplied time.Time
// LastRequested time.Time
// LastFailure time.Time
// SecondLastFailure time.Time
NumFailures int
//<lastPublished>,
//<originallyPublished>
// <originalPublisherID>
}
func (p *peer) Touch() {
p.LastActivity = time.Now()
p.NumFailures = 0
}
// ActiveSince returns whether a peer has responded in the last `d` duration
// this is used to check if the peer is "good", meaning that we believe the peer will respond to our requests
func (p *peer) ActiveInLast(d time.Duration) bool {
return time.Since(p.LastActivity) < d
}
// IsBad returns whether a peer is "bad", meaning that it has failed to respond to multiple pings in a row
func (p *peer) IsBad(maxFalures int) bool {
return p.NumFailures >= maxFalures
}
// Fail marks a peer as having failed to respond. It returns whether or not the peer should be removed from the routing table
func (p *peer) Fail() {
p.NumFailures++
}
type bucket struct {
lock *sync.RWMutex
peers []peer
lastUpdate time.Time
Range bits.Range // capitalized because `range` is a keyword
}
func newBucket(r bits.Range) *bucket {
return &bucket{
peers: make([]peer, 0, bucketSize),
lock: &sync.RWMutex{},
Range: r,
}
}
// Len returns the number of peers in the bucket
func (b bucket) Len() int {
b.lock.RLock()
defer b.lock.RUnlock()
return len(b.peers)
}
func (b bucket) Has(c Contact) bool {
b.lock.RLock()
defer b.lock.RUnlock()
for _, p := range b.peers {
if p.Contact.Equals(c, true) {
return true
}
}
return false
}
// Contacts returns a slice of the bucket's contacts
func (b bucket) Contacts() []Contact {
b.lock.RLock()
defer b.lock.RUnlock()
contacts := make([]Contact, len(b.peers))
for i := range b.peers {
contacts[i] = b.peers[i].Contact
}
return contacts
}
// UpdatePeer marks a contact as having been successfully contacted. if insertIfNew and the contact is does not exist yet, it is inserted
func (b *bucket) UpdatePeer(p peer, insertIfNew bool) error {
b.lock.Lock()
defer b.lock.Unlock()
if !b.Range.Contains(p.Distance) {
return errors.Err("this bucket range does not cover this peer")
}
peerIndex := find(p.Contact.ID, b.peers)
if peerIndex >= 0 {
b.lastUpdate = time.Now()
b.peers[peerIndex].Touch()
moveToBack(b.peers, peerIndex)
} else if insertIfNew {
hasRoom := true
if len(b.peers) >= bucketSize {
hasRoom = false
for i := range b.peers {
if b.peers[i].IsBad(maxPeerFails) {
// TODO: Ping contact first. Only remove if it does not respond
b.peers = append(b.peers[:i], b.peers[i+1:]...)
hasRoom = true
break
}
}
}
if hasRoom {
b.lastUpdate = time.Now()
p.Touch()
b.peers = append(b.peers, p)
}
}
return nil
}
// FailContact marks a contact as having failed, and removes it if it failed too many times
func (b *bucket) FailContact(id bits.Bitmap) {
b.lock.Lock()
defer b.lock.Unlock()
i := find(id, b.peers)
if i >= 0 {
// BEP5 says not to remove the contact until the bucket is full and you try to insert
b.peers[i].Fail()
}
}
// find returns the contact in the bucket, or nil if the bucket does not contain the contact
func find(id bits.Bitmap, peers []peer) int {
for i := range peers {
if peers[i].Contact.ID.Equals(id) {
return i
}
}
return -1
}
// NeedsRefresh returns true if bucket has not been updated in the last `refreshInterval`, false otherwise
func (b *bucket) NeedsRefresh(refreshInterval time.Duration) bool {
b.lock.RLock()
defer b.lock.RUnlock()
return time.Since(b.lastUpdate) > refreshInterval
}
func (b *bucket) Split() (*bucket, *bucket) {
b.lock.Lock()
defer b.lock.Unlock()
left := newBucket(b.Range.IntervalP(1, 2))
right := newBucket(b.Range.IntervalP(2, 2))
left.lastUpdate = b.lastUpdate
right.lastUpdate = b.lastUpdate
for _, p := range b.peers {
if left.Range.Contains(p.Distance) {
left.peers = append(left.peers, p)
} else {
right.peers = append(right.peers, p)
}
}
if len(b.peers) > 1 {
if len(left.peers) == 0 {
left, right = right.Split()
left.Range.Start = b.Range.Start
} else if len(right.peers) == 0 {
left, right = left.Split()
right.Range.End = b.Range.End
}
}
return left, right
}
type routingTable struct {
id bits.Bitmap
buckets []*bucket
mu *sync.RWMutex // this mutex is write-locked only when CHANGING THE NUMBER OF BUCKETS in the table
}
func newRoutingTable(id bits.Bitmap) *routingTable {
rt := routingTable{
id: id,
mu: &sync.RWMutex{},
}
rt.reset()
return &rt
}
func (rt *routingTable) reset() {
rt.mu.Lock()
defer rt.mu.Unlock()
rt.buckets = []*bucket{newBucket(bits.MaxRange())}
}
func (rt *routingTable) BucketInfo() string {
rt.mu.RLock()
defer rt.mu.RUnlock()
var bucketInfo []string
for i, b := range rt.buckets {
if b.Len() > 0 {
contacts := b.Contacts()
s := make([]string, len(contacts))
for j, c := range contacts {
s[j] = c.ID.HexShort()
}
bucketInfo = append(bucketInfo, fmt.Sprintf("bucket %d: (%d) %s", i, len(contacts), strings.Join(s, ", ")))
}
}
if len(bucketInfo) == 0 {
return "buckets are empty"
}
return strings.Join(bucketInfo, "\n")
}
// Update inserts or refreshes a contact
func (rt *routingTable) Update(c Contact) {
rt.mu.Lock() // write lock, because updates may cause bucket splits
defer rt.mu.Unlock()
b := rt.bucketFor(c.ID)
if rt.shouldSplit(b, c) {
left, right := b.Split()
for i := range rt.buckets {
if rt.buckets[i].Range.Start.Equals(left.Range.Start) {
rt.buckets = append(rt.buckets[:i], append([]*bucket{left, right}, rt.buckets[i+1:]...)...)
break
}
}
if left.Range.Contains(c.ID) {
b = left
} else {
b = right
}
}
err := b.UpdatePeer(peer{Contact: c, Distance: rt.id.Xor(c.ID)}, true)
if err != nil {
log.Error(err)
}
}
// Fresh refreshes a contact if its already in the routing table
func (rt *routingTable) Fresh(c Contact) {
rt.mu.RLock()
defer rt.mu.RUnlock()
err := rt.bucketFor(c.ID).UpdatePeer(peer{Contact: c, Distance: rt.id.Xor(c.ID)}, false)
if err != nil {
log.Error(err)
}
}
// FailContact marks a contact as having failed, and removes it if it failed too many times
func (rt *routingTable) Fail(c Contact) {
rt.mu.RLock()
defer rt.mu.RUnlock()
rt.bucketFor(c.ID).FailContact(c.ID)
}
// GetClosest returns the closest `limit` contacts from the routing table.
// This is a locking wrapper around getClosest()
func (rt *routingTable) GetClosest(target bits.Bitmap, limit int) []Contact {
rt.mu.RLock()
defer rt.mu.RUnlock()
return rt.getClosest(target, limit)
}
// getClosest returns the closest `limit` contacts from the routing table
func (rt *routingTable) getClosest(target bits.Bitmap, limit int) []Contact {
var contacts []Contact
for _, b := range rt.buckets {
contacts = append(contacts, b.Contacts()...)
}
sortByDistance(contacts, target)
if len(contacts) > limit {
contacts = contacts[:limit]
}
return contacts
}
// Count returns the number of contacts in the routing table
func (rt *routingTable) Count() int {
rt.mu.RLock()
defer rt.mu.RUnlock()
count := 0
for _, bucket := range rt.buckets {
count += bucket.Len()
}
return count
}
// Len returns the number of buckets in the routing table
func (rt *routingTable) Len() int {
rt.mu.RLock()
defer rt.mu.RUnlock()
return len(rt.buckets)
}
func (rt *routingTable) bucketFor(target bits.Bitmap) *bucket {
if rt.id.Equals(target) {
panic("routing table does not have a bucket for its own id")
}
distance := target.Xor(rt.id)
for _, b := range rt.buckets {
if b.Range.Contains(distance) {
return b
}
}
panic("target is not contained in any buckets")
}
func (rt *routingTable) shouldSplit(b *bucket, c Contact) bool {
if b.Has(c) {
return false
}
if b.Len() >= bucketSize {
if b.Range.Start.Equals(bits.Bitmap{}) { // this is the bucket covering our node id
return true
}
kClosest := rt.getClosest(rt.id, bucketSize)
kthClosest := kClosest[len(kClosest)-1]
if rt.id.Closer(c.ID, kthClosest.ID) {
return true
}
}
return false
}
//func (rt *routingTable) printBucketInfo() {
// fmt.Printf("there are %d contacts in %d buckets\n", rt.Count(), rt.Len())
// for i, b := range rt.buckets {
// fmt.Printf("bucket %d, %d contacts\n", i+1, len(b.peers))
// fmt.Printf(" start : %s\n", b.Range.Start.String())
// fmt.Printf(" stop : %s\n", b.Range.End.String())
// fmt.Println("")
// }
//}
func (rt *routingTable) GetIDsForRefresh(refreshInterval time.Duration) []bits.Bitmap {
var bitmaps []bits.Bitmap
for i, bucket := range rt.buckets {
if bucket.NeedsRefresh(refreshInterval) {
bitmaps = append(bitmaps, bits.Rand().Prefix(i, false))
}
}
return bitmaps
}
const rtContactSep = "-"
type rtSave struct {
ID string `json:"id"`
Contacts []string `json:"contacts"`
}
func (rt *routingTable) MarshalJSON() ([]byte, error) {
var data rtSave
data.ID = rt.id.Hex()
for _, b := range rt.buckets {
for _, c := range b.Contacts() {
data.Contacts = append(data.Contacts, strings.Join([]string{c.ID.Hex(), c.IP.String(), strconv.Itoa(c.Port)}, rtContactSep))
}
}
return json.Marshal(data)
}
func (rt *routingTable) UnmarshalJSON(b []byte) error {
var data rtSave
err := json.Unmarshal(b, &data)
if err != nil {
return err
}
rt.id, err = bits.FromHex(data.ID)
if err != nil {
return errors.Prefix("decoding ID", err)
}
rt.reset()
for _, s := range data.Contacts {
parts := strings.Split(s, rtContactSep)
if len(parts) != 3 {
return errors.Err("decoding contact %s: wrong number of parts", s)
}
var c Contact
c.ID, err = bits.FromHex(parts[0])
if err != nil {
return errors.Err("decoding contact %s: invalid ID: %s", s, err)
}
c.IP = net.ParseIP(parts[1])
if c.IP == nil {
return errors.Err("decoding contact %s: invalid IP", s)
}
c.Port, err = strconv.Atoi(parts[2])
if err != nil {
return errors.Err("decoding contact %s: invalid port: %s", s, err)
}
rt.Update(c)
}
return nil
}
// RoutingTableRefresh refreshes any buckets that need to be refreshed
func RoutingTableRefresh(n *Node, refreshInterval time.Duration, parentGrp *stop.Group) {
done := stop.New()
for _, id := range n.rt.GetIDsForRefresh(refreshInterval) {
done.Add(1)
go func(id bits.Bitmap) {
defer done.Done()
_, _, err := FindContacts(n, id, false, parentGrp)
if err != nil {
log.Error("error finding contact during routing table refresh - ", err)
}
}(id)
}
done.Wait()
done.Stop()
}
func moveToBack(peers []peer, index int) {
if index < 0 || len(peers) <= index+1 {
return
}
p := peers[index]
for i := index; i < len(peers)-1; i++ {
peers[i] = peers[i+1]
}
peers[len(peers)-1] = p
}

328
dht/routing_table_test.go Normal file
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package dht
import (
"encoding/json"
"math/big"
"net"
"strconv"
"strings"
"testing"
"github.com/lbryio/reflector.go/dht/bits"
"github.com/sebdah/goldie"
)
func TestBucket_Split(t *testing.T) {
rt := newRoutingTable(bits.FromHexP("000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"))
if len(rt.buckets) != 1 {
t.Errorf("there should only be one bucket so far")
}
if len(rt.buckets[0].peers) != 0 {
t.Errorf("there should be no contacts yet")
}
var tests = []struct {
name string
id bits.Bitmap
expectedBucketCount int
expectedTotalContacts int
}{
//fill first bucket
{"b1-one", bits.FromHexP("000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000100"), 1, 1},
{"b1-two", bits.FromHexP("000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000200"), 1, 2},
{"b1-three", bits.FromHexP("000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000300"), 1, 3},
{"b1-four", bits.FromHexP("000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000400"), 1, 4},
{"b1-five", bits.FromHexP("000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000500"), 1, 5},
{"b1-six", bits.FromHexP("000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000600"), 1, 6},
{"b1-seven", bits.FromHexP("000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000700"), 1, 7},
{"b1-eight", bits.FromHexP("000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000800"), 1, 8},
// split off second bucket and fill it
{"b2-one", bits.FromHexP("001000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"), 2, 9},
{"b2-two", bits.FromHexP("002000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"), 2, 10},
{"b2-three", bits.FromHexP("003000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"), 2, 11},
{"b2-four", bits.FromHexP("004000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"), 2, 12},
{"b2-five", bits.FromHexP("005000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"), 2, 13},
{"b2-six", bits.FromHexP("006000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"), 2, 14},
{"b2-seven", bits.FromHexP("007000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"), 2, 15},
// at this point there are two buckets. the first has 7 contacts, the second has 8
// inserts into the second bucket should be skipped
{"dont-split", bits.FromHexP("009000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"), 2, 15},
// ... unless the ID is closer than the kth-closest contact
{"split-kth-closest", bits.FromHexP("000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001"), 2, 16},
{"b3-two", bits.FromHexP("000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002"), 3, 17},
{"b3-three", bits.FromHexP("000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003"), 3, 18},
}
for i, testCase := range tests {
rt.Update(Contact{testCase.id, net.ParseIP("127.0.0.1"), 8000 + i, 0})
if len(rt.buckets) != testCase.expectedBucketCount {
t.Errorf("failed test case %s. there should be %d buckets, got %d", testCase.name, testCase.expectedBucketCount, len(rt.buckets))
}
if rt.Count() != testCase.expectedTotalContacts {
t.Errorf("failed test case %s. there should be %d contacts, got %d", testCase.name, testCase.expectedTotalContacts, rt.Count())
}
}
var testRanges = []struct {
id bits.Bitmap
expected int
}{
{bits.FromHexP("000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001"), 0},
{bits.FromHexP("000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000005"), 0},
{bits.FromHexP("000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000410"), 1},
{bits.FromHexP("0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007f0"), 1},
{bits.FromHexP("F00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000800"), 2},
{bits.FromHexP("F00000000000000000000000000000000000000000000000000F00000000000000000000000000000000000000000000"), 2},
{bits.FromHexP("F0000000000000000000000000000000F0000000000000000000000000F0000000000000000000000000000000000000"), 2},
}
for _, tt := range testRanges {
bucket := bucketNumFor(rt, tt.id)
if bucket != tt.expected {
t.Errorf("bucketFor(%s, %s) => got %d, expected %d", tt.id.Hex(), rt.id.Hex(), bucket, tt.expected)
}
}
}
func bucketNumFor(rt *routingTable, target bits.Bitmap) int {
if rt.id.Equals(target) {
panic("routing table does not have a bucket for its own id")
}
distance := target.Xor(rt.id)
for i := range rt.buckets {
if rt.buckets[i].Range.Contains(distance) {
return i
}
}
panic("target is not contained in any buckets")
}
func TestBucket_Split_Continuous(t *testing.T) {
b := newBucket(bits.MaxRange())
left, right := b.Split()
if !left.Range.Start.Equals(b.Range.Start) {
t.Errorf("left bucket start does not align with original bucket start. got %s, expected %s", left.Range.Start, b.Range.Start)
}
if !right.Range.End.Equals(b.Range.End) {
t.Errorf("right bucket end does not align with original bucket end. got %s, expected %s", right.Range.End, b.Range.End)
}
leftEndNext := (&big.Int{}).Add(left.Range.End.Big(), big.NewInt(1))
if !bits.FromBigP(leftEndNext).Equals(right.Range.Start) {
t.Errorf("there's a gap between left bucket end and right bucket start. end is %s, start is %s", left.Range.End, right.Range.Start)
}
}
func TestBucket_Split_KthClosest_DoSplit(t *testing.T) {
rt := newRoutingTable(bits.FromHexP("000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"))
// add 4 low IDs
rt.Update(Contact{bits.FromHexP("000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001"), net.ParseIP("127.0.0.1"), 8001, 0})
rt.Update(Contact{bits.FromHexP("000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002"), net.ParseIP("127.0.0.1"), 8002, 0})
rt.Update(Contact{bits.FromHexP("000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003"), net.ParseIP("127.0.0.1"), 8003, 0})
rt.Update(Contact{bits.FromHexP("000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004"), net.ParseIP("127.0.0.1"), 8004, 0})
// add 4 high IDs
rt.Update(Contact{bits.FromHexP("800000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"), net.ParseIP("127.0.0.2"), 8001, 0})
rt.Update(Contact{bits.FromHexP("900000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"), net.ParseIP("127.0.0.2"), 8002, 0})
rt.Update(Contact{bits.FromHexP("a00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"), net.ParseIP("127.0.0.2"), 8003, 0})
rt.Update(Contact{bits.FromHexP("b00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"), net.ParseIP("127.0.0.2"), 8004, 0})
// split the bucket and fill the high bucket
rt.Update(Contact{bits.FromHexP("c00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"), net.ParseIP("127.0.0.2"), 8005, 0})
rt.Update(Contact{bits.FromHexP("d00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"), net.ParseIP("127.0.0.2"), 8006, 0})
rt.Update(Contact{bits.FromHexP("e00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"), net.ParseIP("127.0.0.2"), 8007, 0})
rt.Update(Contact{bits.FromHexP("f00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"), net.ParseIP("127.0.0.2"), 8008, 0})
// add a high ID. it should split because the high ID is closer than the Kth closest ID
rt.Update(Contact{bits.FromHexP("910000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"), net.ParseIP("127.0.0.1"), 8009, 0})
if len(rt.buckets) != 3 {
t.Errorf("expected 3 buckets, got %d", len(rt.buckets))
}
if rt.Count() != 13 {
t.Errorf("expected 13 contacts, got %d", rt.Count())
}
}
func TestBucket_Split_KthClosest_DontSplit(t *testing.T) {
rt := newRoutingTable(bits.FromHexP("000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"))
// add 4 low IDs
rt.Update(Contact{bits.FromHexP("000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001"), net.ParseIP("127.0.0.1"), 8001, 0})
rt.Update(Contact{bits.FromHexP("000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002"), net.ParseIP("127.0.0.1"), 8002, 0})
rt.Update(Contact{bits.FromHexP("000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003"), net.ParseIP("127.0.0.1"), 8003, 0})
rt.Update(Contact{bits.FromHexP("000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004"), net.ParseIP("127.0.0.1"), 8004, 0})
// add 4 high IDs
rt.Update(Contact{bits.FromHexP("800000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"), net.ParseIP("127.0.0.2"), 8001, 0})
rt.Update(Contact{bits.FromHexP("900000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"), net.ParseIP("127.0.0.2"), 8002, 0})
rt.Update(Contact{bits.FromHexP("a00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"), net.ParseIP("127.0.0.2"), 8003, 0})
rt.Update(Contact{bits.FromHexP("b00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"), net.ParseIP("127.0.0.2"), 8004, 0})
// split the bucket and fill the high bucket
rt.Update(Contact{bits.FromHexP("c00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"), net.ParseIP("127.0.0.2"), 8005, 0})
rt.Update(Contact{bits.FromHexP("d00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"), net.ParseIP("127.0.0.2"), 8006, 0})
rt.Update(Contact{bits.FromHexP("e00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"), net.ParseIP("127.0.0.2"), 8007, 0})
rt.Update(Contact{bits.FromHexP("f00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"), net.ParseIP("127.0.0.2"), 8008, 0})
// add a really high ID. this should not split because its not closer than the Kth closest ID
rt.Update(Contact{bits.FromHexP("ffff00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"), net.ParseIP("127.0.0.1"), 8009, 0})
if len(rt.buckets) != 2 {
t.Errorf("expected 2 buckets, got %d", len(rt.buckets))
}
if rt.Count() != 12 {
t.Errorf("expected 12 contacts, got %d", rt.Count())
}
}
func TestRoutingTable_GetClosest(t *testing.T) {
n1 := bits.FromHexP("FFFFFFFF0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000")
n2 := bits.FromHexP("FFFFFFF00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000")
n3 := bits.FromHexP("111111110000000000000000000000000000000000000000000000000000000000000000000000000000000000000000")
rt := newRoutingTable(n1)
rt.Update(Contact{n2, net.ParseIP("127.0.0.1"), 8001, 0})
rt.Update(Contact{n3, net.ParseIP("127.0.0.1"), 8002, 0})
contacts := rt.GetClosest(bits.FromHexP("222222220000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"), 1)
if len(contacts) != 1 {
t.Fail()
return
}
if !contacts[0].ID.Equals(n3) {
t.Error(contacts[0])
}
contacts = rt.GetClosest(n2, 10)
if len(contacts) != 2 {
t.Error(len(contacts))
return
}
if !contacts[0].ID.Equals(n2) {
t.Error(contacts[0])
}
if !contacts[1].ID.Equals(n3) {
t.Error(contacts[1])
}
}
func TestRoutingTable_GetClosest_Empty(t *testing.T) {
n1 := bits.FromShortHexP("1")
rt := newRoutingTable(n1)
contacts := rt.GetClosest(bits.FromShortHexP("a"), 3)
if len(contacts) != 0 {
t.Error("there shouldn't be any contacts")
return
}
}
func TestRoutingTable_Refresh(t *testing.T) {
t.Skip("TODO: test routing table refreshing")
}
func TestRoutingTable_MoveToBack(t *testing.T) {
tt := map[string]struct {
data []peer
index int
expected []peer
}{
"simpleMove": {
data: []peer{{NumFailures: 0}, {NumFailures: 1}, {NumFailures: 2}, {NumFailures: 3}},
index: 1,
expected: []peer{{NumFailures: 0}, {NumFailures: 2}, {NumFailures: 3}, {NumFailures: 1}},
},
"moveFirst": {
data: []peer{{NumFailures: 0}, {NumFailures: 1}, {NumFailures: 2}, {NumFailures: 3}},
index: 0,
expected: []peer{{NumFailures: 1}, {NumFailures: 2}, {NumFailures: 3}, {NumFailures: 0}},
},
"moveLast": {
data: []peer{{NumFailures: 0}, {NumFailures: 1}, {NumFailures: 2}, {NumFailures: 3}},
index: 3,
expected: []peer{{NumFailures: 0}, {NumFailures: 1}, {NumFailures: 2}, {NumFailures: 3}},
},
"largeIndex": {
data: []peer{{NumFailures: 0}, {NumFailures: 1}, {NumFailures: 2}, {NumFailures: 3}},
index: 27,
expected: []peer{{NumFailures: 0}, {NumFailures: 1}, {NumFailures: 2}, {NumFailures: 3}},
},
"negativeIndex": {
data: []peer{{NumFailures: 0}, {NumFailures: 1}, {NumFailures: 2}, {NumFailures: 3}},
index: -12,
expected: []peer{{NumFailures: 0}, {NumFailures: 1}, {NumFailures: 2}, {NumFailures: 3}},
},
}
for name, test := range tt {
moveToBack(test.data, test.index)
expected := make([]string, len(test.expected))
actual := make([]string, len(test.data))
for i := range actual {
actual[i] = strconv.Itoa(test.data[i].NumFailures)
expected[i] = strconv.Itoa(test.expected[i].NumFailures)
}
expJoin := strings.Join(expected, ",")
actJoin := strings.Join(actual, ",")
if actJoin != expJoin {
t.Errorf("%s failed: got %s; expected %s", name, actJoin, expJoin)
}
}
}
func TestRoutingTable_Save(t *testing.T) {
t.Skip("fix me")
id := bits.FromHexP("1c8aff71b99462464d9eeac639595ab99664be3482cb91a29d87467515c7d9158fe72aa1f1582dab07d8f8b5db277f41")
rt := newRoutingTable(id)
for i, b := range rt.buckets {
for j := 0; j < bucketSize; j++ {
toAdd := b.Range.Start.Add(bits.FromShortHexP(strconv.Itoa(j)))
if toAdd.Cmp(b.Range.End) <= 0 {
rt.Update(Contact{
ID: b.Range.Start.Add(bits.FromShortHexP(strconv.Itoa(j))),
IP: net.ParseIP("1.2.3." + strconv.Itoa(j)),
Port: 1 + i*bucketSize + j,
})
}
}
}
data, err := json.MarshalIndent(rt, "", " ")
if err != nil {
t.Error(err)
}
goldie.Assert(t, t.Name(), data)
}
func TestRoutingTable_Load_ID(t *testing.T) {
t.Skip("fix me")
id := "1c8aff71b99462464d9eeac639595ab99664be3482cb91a29d87467515c7d9158fe72aa1f1582dab07d8f8b5db277f41"
data := []byte(`{"id": "` + id + `","contacts": []}`)
rt := routingTable{}
err := json.Unmarshal(data, &rt)
if err != nil {
t.Error(err)
}
if rt.id.Hex() != id {
t.Error("id mismatch")
}
}
func TestRoutingTable_Load_Contacts(t *testing.T) {
t.Skip("TODO")
}

187
dht/rpc.go Normal file
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package dht
import (
"context"
"net"
"net/http"
"strconv"
"sync"
"github.com/lbryio/lbry.go/errors"
"github.com/lbryio/reflector.go/dht/bits"
"github.com/gorilla/mux"
rpc2 "github.com/gorilla/rpc/v2"
"github.com/gorilla/rpc/v2/json"
)
type rpcReceiver struct {
dht *DHT
}
type RpcPingArgs struct {
Address string
}
func (rpc *rpcReceiver) Ping(r *http.Request, args *RpcPingArgs, result *string) error {
if args.Address == "" {
return errors.Err("no address given")
}
err := rpc.dht.Ping(args.Address)
if err != nil {
return err
}
*result = pingSuccessResponse
return nil
}
type RpcFindArgs struct {
Key string
NodeID string
IP string
Port int
}
func (rpc *rpcReceiver) FindNode(r *http.Request, args *RpcFindArgs, result *[]Contact) error {
key, err := bits.FromHex(args.Key)
if err != nil {
return err
}
toQuery, err := bits.FromHex(args.NodeID)
if err != nil {
return err
}
c := Contact{ID: toQuery, IP: net.ParseIP(args.IP), Port: args.Port}
req := Request{Method: findNodeMethod, Arg: &key}
nodeResponse := rpc.dht.node.Send(c, req)
if nodeResponse != nil && nodeResponse.Contacts != nil {
*result = nodeResponse.Contacts
}
return nil
}
type RpcFindValueResult struct {
Contacts []Contact
Value string
}
func (rpc *rpcReceiver) FindValue(r *http.Request, args *RpcFindArgs, result *RpcFindValueResult) error {
key, err := bits.FromHex(args.Key)
if err != nil {
return err
}
toQuery, err := bits.FromHex(args.NodeID)
if err != nil {
return err
}
c := Contact{ID: toQuery, IP: net.ParseIP(args.IP), Port: args.Port}
req := Request{Arg: &key, Method: findValueMethod}
nodeResponse := rpc.dht.node.Send(c, req)
if nodeResponse != nil && nodeResponse.FindValueKey != "" {
*result = RpcFindValueResult{Value: nodeResponse.FindValueKey}
return nil
}
if nodeResponse != nil && nodeResponse.Contacts != nil {
*result = RpcFindValueResult{Contacts: nodeResponse.Contacts}
return nil
}
return errors.Err("not sure what happened")
}
type RpcIterativeFindValueArgs struct {
Key string
}
type RpcIterativeFindValueResult struct {
Contacts []Contact
FoundValue bool
}
func (rpc *rpcReceiver) IterativeFindValue(r *http.Request, args *RpcIterativeFindValueArgs, result *RpcIterativeFindValueResult) error {
key, err := bits.FromHex(args.Key)
if err != nil {
return err
}
foundContacts, found, err := FindContacts(rpc.dht.node, key, false, nil)
if err != nil {
return err
}
result.Contacts = foundContacts
result.FoundValue = found
return nil
}
type RpcBucketResponse struct {
Start string
End string
NumContacts int
Contacts []Contact
}
type RpcRoutingTableResponse struct {
NodeID string
NumBuckets int
Buckets []RpcBucketResponse
}
func (rpc *rpcReceiver) GetRoutingTable(r *http.Request, args *struct{}, result *RpcRoutingTableResponse) error {
result.NodeID = rpc.dht.node.id.String()
result.NumBuckets = len(rpc.dht.node.rt.buckets)
for _, b := range rpc.dht.node.rt.buckets {
result.Buckets = append(result.Buckets, RpcBucketResponse{
Start: b.Range.Start.String(),
End: b.Range.End.String(),
NumContacts: b.Len(),
Contacts: b.Contacts(),
})
}
return nil
}
func (rpc *rpcReceiver) AddKnownNode(r *http.Request, args *Contact, result *string) error {
rpc.dht.node.AddKnownNode(*args)
return nil
}
func (dht *DHT) runRPCServer(port int) {
addr := "0.0.0.0:" + strconv.Itoa(port)
s := rpc2.NewServer()
s.RegisterCodec(json.NewCodec(), "application/json")
s.RegisterCodec(json.NewCodec(), "application/json;charset=UTF-8")
err := s.RegisterService(&rpcReceiver{dht: dht}, "rpc")
if err != nil {
log.Error(errors.Prefix("registering rpc service", err))
return
}
handler := mux.NewRouter()
handler.Handle("/", s)
server := &http.Server{Addr: addr, Handler: handler}
wg := sync.WaitGroup{}
wg.Add(1)
go func() {
defer wg.Done()
log.Printf("RPC server listening on %s", addr)
err := server.ListenAndServe()
if err != nil && err != http.ErrServerClosed {
log.Error(err)
}
}()
<-dht.grp.Ch()
err = server.Shutdown(context.Background())
if err != nil {
log.Error(errors.Prefix("shutting down rpc service", err))
return
}
wg.Wait()
}

62
dht/store.go Normal file
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package dht
import (
"sync"
"github.com/lbryio/reflector.go/dht/bits"
)
// TODO: expire stored data after tExpire time
type contactStore struct {
// map of blob hashes to (map of node IDs to bools)
hashes map[bits.Bitmap]map[bits.Bitmap]bool
// stores the peers themselves, so they can be updated in one place
contacts map[bits.Bitmap]Contact
lock sync.RWMutex
}
func newStore() *contactStore {
return &contactStore{
hashes: make(map[bits.Bitmap]map[bits.Bitmap]bool),
contacts: make(map[bits.Bitmap]Contact),
}
}
func (s *contactStore) Upsert(blobHash bits.Bitmap, contact Contact) {
s.lock.Lock()
defer s.lock.Unlock()
if _, ok := s.hashes[blobHash]; !ok {
s.hashes[blobHash] = make(map[bits.Bitmap]bool)
}
s.hashes[blobHash][contact.ID] = true
s.contacts[contact.ID] = contact
}
func (s *contactStore) Get(blobHash bits.Bitmap) []Contact {
s.lock.RLock()
defer s.lock.RUnlock()
var contacts []Contact
if ids, ok := s.hashes[blobHash]; ok {
for id := range ids {
contact, ok := s.contacts[id]
if !ok {
panic("node id in IDs list, but not in nodeInfo")
}
contacts = append(contacts, contact)
}
}
return contacts
}
func (s *contactStore) RemoveTODO(contact Contact) {
// TODO: remove peer from everywhere
}
func (s *contactStore) CountStoredHashes() int {
s.lock.RLock()
defer s.lock.RUnlock()
return len(s.hashes)
}

312
dht/testing.go Normal file
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package dht
import (
"net"
"strconv"
"strings"
"testing"
"time"
"github.com/lbryio/lbry.go/errors"
"github.com/lbryio/reflector.go/dht/bits"
)
var testingDHTIP = "127.0.0.1"
var testingDHTFirstPort = 21000
// TestingCreateNetwork initializes a testable DHT network with a specific number of nodes, with bootstrap and concurrent options.
func TestingCreateNetwork(t *testing.T, numNodes int, bootstrap, concurrent bool) (*BootstrapNode, []*DHT) {
var bootstrapNode *BootstrapNode
var seeds []string
if bootstrap {
bootstrapAddress := testingDHTIP + ":" + strconv.Itoa(testingDHTFirstPort)
seeds = []string{bootstrapAddress}
bootstrapNode = NewBootstrapNode(bits.Rand(), 0, bootstrapDefaultRefreshDuration)
listener, err := net.ListenPacket(Network, bootstrapAddress)
if err != nil {
panic(err)
}
err = bootstrapNode.Connect(listener.(*net.UDPConn))
if err != nil {
t.Error("error connecting bootstrap node - ", err)
}
}
if numNodes < 1 {
return bootstrapNode, nil
}
firstPort := testingDHTFirstPort + 1
dhts := make([]*DHT, numNodes)
for i := 0; i < numNodes; i++ {
c := NewStandardConfig()
c.NodeID = bits.Rand().Hex()
c.Address = testingDHTIP + ":" + strconv.Itoa(firstPort+i)
c.SeedNodes = seeds
dht := New(c)
go func() {
err := dht.Start()
if err != nil {
t.Error("error starting dht - ", err)
}
}()
if !concurrent {
dht.WaitUntilJoined()
}
dhts[i] = dht
}
if concurrent {
for _, d := range dhts {
d.WaitUntilJoined()
}
}
return bootstrapNode, dhts
}
type timeoutErr struct {
error
}
func (t timeoutErr) Timeout() bool {
return true
}
func (t timeoutErr) Temporary() bool {
return true
}
// TODO: just use a normal net.Conn instead of this mock conn
type testUDPPacket struct {
data []byte
addr *net.UDPAddr
}
type testUDPConn struct {
addr *net.UDPAddr
toRead chan testUDPPacket
writes chan testUDPPacket
readDeadline time.Time
}
func newTestUDPConn(addr string) *testUDPConn {
parts := strings.Split(addr, ":")
if len(parts) != 2 {
panic("addr needs ip and port")
}
port, err := strconv.Atoi(parts[1])
if err != nil {
panic(err)
}
return &testUDPConn{
addr: &net.UDPAddr{IP: net.IP(parts[0]), Port: port},
toRead: make(chan testUDPPacket),
writes: make(chan testUDPPacket),
}
}
func (t testUDPConn) ReadFromUDP(b []byte) (int, *net.UDPAddr, error) {
var timeoutCh <-chan time.Time
if !t.readDeadline.IsZero() {
timeoutCh = time.After(time.Until(t.readDeadline))
}
select {
case packet, ok := <-t.toRead:
if !ok {
return 0, nil, errors.Err("conn closed")
}
n := copy(b, packet.data)
return n, packet.addr, nil
case <-timeoutCh:
return 0, nil, timeoutErr{errors.Err("timeout")}
}
}
func (t testUDPConn) WriteToUDP(b []byte, addr *net.UDPAddr) (int, error) {
t.writes <- testUDPPacket{data: b, addr: addr}
return len(b), nil
}
func (t *testUDPConn) SetReadDeadline(tm time.Time) error {
t.readDeadline = tm
return nil
}
func (t *testUDPConn) SetWriteDeadline(tm time.Time) error {
return nil
}
func (t *testUDPConn) Close() error {
close(t.toRead)
t.writes = nil
return nil
}
func verifyResponse(t *testing.T, resp map[string]interface{}, id messageID, dhtNodeID string) {
if len(resp) != 4 {
t.Errorf("expected 4 response fields, got %d", len(resp))
}
_, ok := resp[headerTypeField]
if !ok {
t.Error("missing type field")
} else {
rType, ok := resp[headerTypeField].(int64)
if !ok {
t.Error("type is not an integer")
} else if rType != responseType {
t.Error("unexpected response type")
}
}
_, ok = resp[headerMessageIDField]
if !ok {
t.Error("missing message id field")
} else {
rMessageID, ok := resp[headerMessageIDField].(string)
if !ok {
t.Error("message ID is not a string")
} else if rMessageID != string(id[:]) {
t.Error("unexpected message ID")
}
if len(rMessageID) != messageIDLength {
t.Errorf("message ID should be %d chars long", messageIDLength)
}
}
_, ok = resp[headerNodeIDField]
if !ok {
t.Error("missing node id field")
} else {
rNodeID, ok := resp[headerNodeIDField].(string)
if !ok {
t.Error("node ID is not a string")
} else if rNodeID != dhtNodeID {
t.Error("unexpected node ID")
}
if len(rNodeID) != nodeIDLength {
t.Errorf("node ID should be %d chars long", nodeIDLength)
}
}
}
func verifyContacts(t *testing.T, contacts []interface{}, nodes []Contact) {
if len(contacts) != len(nodes) {
t.Errorf("got %d contacts; expected %d", len(contacts), len(nodes))
return
}
foundNodes := make(map[string]bool)
for _, c := range contacts {
contact, ok := c.([]interface{})
if !ok {
t.Error("contact is not a list")
return
}
if len(contact) != 3 {
t.Error("contact must be 3 items")
return
}
var currNode Contact
currNodeFound := false
id, ok := contact[0].(string)
if !ok {
t.Error("contact id is not a string")
} else {
if _, ok := foundNodes[id]; ok {
t.Errorf("contact %s appears multiple times", id)
continue
}
for _, n := range nodes {
if n.ID.RawString() == id {
currNode = n
currNodeFound = true
foundNodes[id] = true
break
}
}
if !currNodeFound {
t.Errorf("unexpected contact %s", id)
continue
}
}
ip, ok := contact[1].(string)
if !ok {
t.Error("contact IP is not a string")
} else if !currNode.IP.Equal(net.ParseIP(ip)) {
t.Errorf("contact IP mismatch. got %s; expected %s", ip, currNode.IP.String())
}
port, ok := contact[2].(int64)
if !ok {
t.Error("contact port is not an int")
} else if int(port) != currNode.Port {
t.Errorf("contact port mismatch. got %d; expected %d", port, currNode.Port)
}
}
}
func verifyCompactContacts(t *testing.T, contacts []interface{}, nodes []Contact) {
if len(contacts) != len(nodes) {
t.Errorf("got %d contacts; expected %d", len(contacts), len(nodes))
return
}
foundNodes := make(map[string]bool)
for _, c := range contacts {
compact, ok := c.(string)
if !ok {
t.Error("contact is not a string")
return
}
contact := Contact{}
err := contact.UnmarshalCompact([]byte(compact))
if err != nil {
t.Error(err)
return
}
var currNode Contact
currNodeFound := false
if _, ok := foundNodes[contact.ID.Hex()]; ok {
t.Errorf("contact %s appears multiple times", contact.ID.Hex())
continue
}
for _, n := range nodes {
if n.ID.Equals(contact.ID) {
currNode = n
currNodeFound = true
foundNodes[contact.ID.Hex()] = true
break
}
}
if !currNodeFound {
t.Errorf("unexpected contact %s", contact.ID.Hex())
continue
}
if !currNode.IP.Equal(contact.IP) {
t.Errorf("contact IP mismatch. got %s; expected %s", contact.IP.String(), currNode.IP.String())
}
if contact.Port != currNode.Port {
t.Errorf("contact port mismatch. got %d; expected %d", contact.Port, currNode.Port)
}
}
}

71
dht/token_cache.go Normal file
View file

@ -0,0 +1,71 @@
package dht
import (
"sync"
"time"
"github.com/lbryio/reflector.go/dht/bits"
"github.com/lbryio/lbry.go/stop"
)
// TODO: this should be moved out of dht and into node, and it should be completely hidden inside node. dht should not need to know about tokens
type tokenCacheEntry struct {
token string
receivedAt time.Time
}
type tokenCache struct {
node *Node
tokens map[string]tokenCacheEntry
expiration time.Duration
lock *sync.RWMutex
}
func newTokenCache(node *Node, expiration time.Duration) *tokenCache {
tc := &tokenCache{}
tc.node = node
tc.tokens = make(map[string]tokenCacheEntry)
tc.expiration = expiration
tc.lock = &sync.RWMutex{}
return tc
}
// TODO: if store fails, get new token. can happen if a node restarts but we have the token cached
func (tc *tokenCache) Get(c Contact, hash bits.Bitmap, cancelCh stop.Chan) string {
tc.lock.RLock()
token, exists := tc.tokens[c.String()]
tc.lock.RUnlock()
if exists && time.Since(token.receivedAt) < tc.expiration {
return token.token
}
resCh := tc.node.SendAsync(c, Request{
Method: findValueMethod,
Arg: &hash,
})
var res *Response
select {
case res = <-resCh:
case <-cancelCh:
return ""
}
if res == nil {
return ""
}
tc.lock.Lock()
tc.tokens[c.String()] = tokenCacheEntry{
token: res.Token,
receivedAt: time.Now(),
}
tc.lock.Unlock()
return res.Token
}

78
dht/token_manager.go Normal file
View file

@ -0,0 +1,78 @@
package dht
import (
"bytes"
"crypto/rand"
"crypto/sha256"
"net"
"strconv"
"sync"
"time"
"github.com/lbryio/lbry.go/stop"
"github.com/lbryio/reflector.go/dht/bits"
)
type tokenManager struct {
secret []byte
prevSecret []byte
lock *sync.RWMutex
stop *stop.Group
}
func (tm *tokenManager) Start(interval time.Duration) {
tm.secret = make([]byte, 64)
tm.prevSecret = make([]byte, 64)
tm.lock = &sync.RWMutex{}
tm.stop = stop.New()
tm.rotateSecret()
tm.stop.Add(1)
go func() {
defer tm.stop.Done()
tick := time.NewTicker(interval)
for {
select {
case <-tick.C:
tm.rotateSecret()
case <-tm.stop.Ch():
return
}
}
}()
}
func (tm *tokenManager) Stop() {
tm.stop.StopAndWait()
}
func (tm *tokenManager) Get(nodeID bits.Bitmap, addr *net.UDPAddr) string {
return genToken(tm.secret, nodeID, addr)
}
func (tm *tokenManager) Verify(token string, nodeID bits.Bitmap, addr *net.UDPAddr) bool {
return token == genToken(tm.secret, nodeID, addr) || token == genToken(tm.prevSecret, nodeID, addr)
}
func genToken(secret []byte, nodeID bits.Bitmap, addr *net.UDPAddr) string {
buf := bytes.Buffer{}
buf.Write(nodeID[:])
buf.Write(addr.IP)
buf.WriteString(strconv.Itoa(addr.Port))
buf.Write(secret)
t := sha256.Sum256(buf.Bytes())
return string(t[:])
}
func (tm *tokenManager) rotateSecret() {
tm.lock.Lock()
defer tm.lock.Unlock()
copy(tm.prevSecret, tm.secret)
_, err := rand.Read(tm.secret)
if err != nil {
panic(err)
}
}

130
go.mod
View file

@ -1,130 +0,0 @@
module github.com/lbryio/reflector.go
go 1.22
replace github.com/btcsuite/btcd => github.com/lbryio/lbrycrd.go v0.0.0-20200203050410-e1076f12bf19
require (
github.com/aws/aws-sdk-go v1.55.5
github.com/bluele/gcache v0.0.2
github.com/brk0v/directio v0.0.0-20190225130936-69406e757cf7
github.com/btcsuite/btcd v0.0.0-20190824003749-130ea5bddde3
github.com/btcsuite/btcutil v0.0.0-20190425235716-9e5f4b9a998d
github.com/c2h5oh/datasize v0.0.0-20231215233829-aa82cc1e6500
github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc
github.com/ekyoung/gin-nice-recovery v0.0.0-20160510022553-1654dca486db
github.com/gin-gonic/gin v1.10.0
github.com/go-sql-driver/mysql v1.8.1
github.com/gogo/protobuf v1.3.2
github.com/golang/protobuf v1.5.4
github.com/google/gops v0.3.28
github.com/gorilla/mux v1.8.1
github.com/hashicorp/serf v0.10.1
github.com/inconshreveable/go-update v0.0.0-20160112193335-8152e7eb6ccf
github.com/johntdyer/slackrus v0.0.0-20230315191314-80bc92dee4fc
github.com/karrick/godirwalk v1.17.0
github.com/lbryio/chainquery v1.9.1-0.20240927170248-48c092515dea
github.com/lbryio/lbry.go/v2 v2.7.2-0.20230307181431-a01aa6dc0629
github.com/lbryio/types v0.0.0-20220224142228-73610f6654a6
github.com/phayes/freeport v0.0.0-20220201140144-74d24b5ae9f5
github.com/prometheus/client_golang v1.20.5
github.com/quic-go/quic-go v0.48.2
github.com/sirupsen/logrus v1.9.3
github.com/spf13/cast v1.6.0
github.com/spf13/cobra v1.8.0
github.com/stretchr/testify v1.9.0
github.com/volatiletech/null/v8 v8.1.2
go.uber.org/atomic v1.11.0
golang.org/x/sync v0.8.0
)
require (
filippo.io/edwards25519 v1.1.0 // indirect
github.com/armon/go-metrics v0.4.1 // indirect
github.com/beorn7/perks v1.0.1 // indirect
github.com/btcsuite/btclog v0.0.0-20170628155309-84c8d2346e9f // indirect
github.com/btcsuite/go-socks v0.0.0-20170105172521-4720035b7bfd // indirect
github.com/btcsuite/websocket v0.0.0-20150119174127-31079b680792 // indirect
github.com/bytedance/sonic v1.11.6 // indirect
github.com/bytedance/sonic/loader v0.1.1 // indirect
github.com/cespare/xxhash/v2 v2.3.0 // indirect
github.com/cloudwego/base64x v0.1.4 // indirect
github.com/cloudwego/iasm v0.2.0 // indirect
github.com/friendsofgo/errors v0.9.2 // indirect
github.com/fsnotify/fsnotify v1.7.0 // indirect
github.com/gabriel-vasile/mimetype v1.4.3 // indirect
github.com/gin-contrib/sse v0.1.0 // indirect
github.com/go-errors/errors v1.4.2 // indirect
github.com/go-ini/ini v1.67.0 // indirect
github.com/go-playground/locales v0.14.1 // indirect
github.com/go-playground/universal-translator v0.18.1 // indirect
github.com/go-playground/validator/v10 v10.20.0 // indirect
github.com/go-task/slim-sprig v0.0.0-20230315185526-52ccab3ef572 // indirect
github.com/goccy/go-json v0.10.2 // indirect
github.com/gofrs/uuid v4.2.0+incompatible // indirect
github.com/google/btree v1.0.0 // indirect
github.com/google/pprof v0.0.0-20211214055906-6f57359322fd // indirect
github.com/gorilla/rpc v1.2.0 // indirect
github.com/gorilla/websocket v1.5.1 // indirect
github.com/hashicorp/errwrap v1.1.0 // indirect
github.com/hashicorp/go-immutable-radix v1.3.1 // indirect
github.com/hashicorp/go-msgpack v0.5.3 // indirect
github.com/hashicorp/go-multierror v1.1.1 // indirect
github.com/hashicorp/go-sockaddr v1.0.0 // indirect
github.com/hashicorp/golang-lru v0.5.4 // indirect
github.com/hashicorp/hcl v1.0.0 // indirect
github.com/hashicorp/memberlist v0.5.0 // indirect
github.com/inconshreveable/mousetrap v1.1.0 // indirect
github.com/jmespath/go-jmespath v0.4.0 // indirect
github.com/johntdyer/slack-go v0.0.0-20230314151037-c5bf334f9b6e // indirect
github.com/json-iterator/go v1.1.12 // indirect
github.com/klauspost/compress v1.17.9 // indirect
github.com/klauspost/cpuid/v2 v2.2.7 // indirect
github.com/leodido/go-urn v1.4.0 // indirect
github.com/lyoshenka/bencode v0.0.0-20180323155644-b7abd7672df5 // indirect
github.com/magiconair/properties v1.8.7 // indirect
github.com/mattn/go-isatty v0.0.20 // indirect
github.com/miekg/dns v1.1.41 // indirect
github.com/mitchellh/mapstructure v1.5.0 // indirect
github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
github.com/modern-go/reflect2 v1.0.2 // indirect
github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
github.com/onsi/ginkgo/v2 v2.9.5 // indirect
github.com/pelletier/go-toml/v2 v2.2.2 // indirect
github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
github.com/prometheus/client_model v0.6.1 // indirect
github.com/prometheus/common v0.55.0 // indirect
github.com/prometheus/procfs v0.15.1 // indirect
github.com/quic-go/qpack v0.5.1 // indirect
github.com/sagikazarmark/locafero v0.4.0 // indirect
github.com/sagikazarmark/slog-shim v0.1.0 // indirect
github.com/sean-/seed v0.0.0-20170313163322-e2103e2c3529 // indirect
github.com/shopspring/decimal v1.3.1 // indirect
github.com/slack-go/slack v0.12.1 // indirect
github.com/sourcegraph/conc v0.3.0 // indirect
github.com/spf13/afero v1.11.0 // indirect
github.com/spf13/pflag v1.0.5 // indirect
github.com/spf13/viper v1.18.2 // indirect
github.com/subosito/gotenv v1.6.0 // indirect
github.com/twitchyliquid64/golang-asm v0.15.1 // indirect
github.com/ugorji/go/codec v1.2.12 // indirect
github.com/volatiletech/inflect v0.0.1 // indirect
github.com/volatiletech/randomize v0.0.1 // indirect
github.com/volatiletech/strmangle v0.0.6 // indirect
go.uber.org/mock v0.4.0 // indirect
go.uber.org/multierr v1.9.0 // indirect
golang.org/x/arch v0.8.0 // indirect
golang.org/x/crypto v0.26.0 // indirect
golang.org/x/exp v0.0.0-20240506185415-9bf2ced13842 // indirect
golang.org/x/mod v0.17.0 // indirect
golang.org/x/net v0.28.0 // indirect
golang.org/x/sys v0.23.0 // indirect
golang.org/x/text v0.17.0 // indirect
golang.org/x/time v0.5.0 // indirect
golang.org/x/tools v0.21.1-0.20240508182429-e35e4ccd0d2d // indirect
golang.org/x/xerrors v0.0.0-20220907171357-04be3eba64a2 // indirect
google.golang.org/protobuf v1.34.2 // indirect
gopkg.in/ini.v1 v1.67.0 // indirect
gopkg.in/nullbio/null.v6 v6.0.0-20161116030900-40264a2e6b79 // indirect
gopkg.in/yaml.v3 v3.0.1 // indirect
)

482
go.sum
View file

@ -1,482 +0,0 @@
filippo.io/edwards25519 v1.1.0 h1:FNf4tywRC1HmFuKW5xopWpigGjJKiJSV0Cqo0cJWDaA=
filippo.io/edwards25519 v1.1.0/go.mod h1:BxyFTGdWcka3PhytdK4V28tE5sGfRvvvRV7EaN4VDT4=
github.com/DataDog/datadog-go v3.2.0+incompatible/go.mod h1:LButxg5PwREeZtORoXG3tL4fMGNddJ+vMq1mwgfaqoQ=
github.com/aead/siphash v1.0.1/go.mod h1:Nywa3cDsYNNK3gaciGTWPwHt0wlpNV15vwmswBAUSII=
github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
github.com/alecthomas/units v0.0.0-20190717042225-c3de453c63f4/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
github.com/armon/circbuf v0.0.0-20150827004946-bbbad097214e/go.mod h1:3U/XgcO3hCbHZ8TKRvWD2dDTCfh9M9ya+I9JpbB7O8o=
github.com/armon/go-metrics v0.0.0-20180917152333-f0300d1749da/go.mod h1:Q73ZrmVTwzkszR9V5SSuryQ31EELlFMUz1kKyl939pY=
github.com/armon/go-metrics v0.4.1 h1:hR91U9KYmb6bLBYLQjyM+3j+rcd/UhE+G78SFnF8gJA=
github.com/armon/go-metrics v0.4.1/go.mod h1:E6amYzXo6aW1tqzoZGT755KkbgrJsSdpwZ+3JqfkOG4=
github.com/armon/go-radix v0.0.0-20180808171621-7fddfc383310/go.mod h1:ufUuZ+zHj4x4TnLV4JWEpy2hxWSpsRywHrMgIH9cCH8=
github.com/armon/go-radix v1.0.0/go.mod h1:ufUuZ+zHj4x4TnLV4JWEpy2hxWSpsRywHrMgIH9cCH8=
github.com/aws/aws-sdk-go v1.55.5 h1:KKUZBfBoyqy5d3swXyiC7Q76ic40rYcbqH7qjh59kzU=
github.com/aws/aws-sdk-go v1.55.5/go.mod h1:eRwEWoyTWFMVYVQzKMNHWP5/RV4xIUGMQfXQHfHkpNU=
github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
github.com/bgentry/speakeasy v0.1.0/go.mod h1:+zsyZBPWlz7T6j88CTgSN5bM796AkVf0kBD4zp0CCIs=
github.com/bluele/gcache v0.0.2 h1:WcbfdXICg7G/DGBh1PFfcirkWOQV+v077yF1pSy3DGw=
github.com/bluele/gcache v0.0.2/go.mod h1:m15KV+ECjptwSPxKhOhQoAFQVtUFjTVkc3H8o0t/fp0=
github.com/brk0v/directio v0.0.0-20190225130936-69406e757cf7 h1:7gNKWnX6OF+ERiXVw4I9RsHhZ52aumXdFE07nEx5v20=
github.com/brk0v/directio v0.0.0-20190225130936-69406e757cf7/go.mod h1:M/KA3XJG5PJaApPiv4gWNsgcSJquOQTqumZNLyYE0KM=
github.com/btcsuite/btclog v0.0.0-20170628155309-84c8d2346e9f h1:bAs4lUbRJpnnkd9VhRV3jjAVU7DJVjMaK+IsvSeZvFo=
github.com/btcsuite/btclog v0.0.0-20170628155309-84c8d2346e9f/go.mod h1:TdznJufoqS23FtqVCzL0ZqgP5MqXbb4fg/WgDys70nA=
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golang.org/x/sys v0.0.0-20200122134326-e047566fdf82/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20200223170610-d5e6a3e2c0ae/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20210303074136-134d130e1a04/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20210330210617-4fbd30eecc44/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20211007075335-d3039528d8ac/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20220728004956-3c1f35247d10/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.23.0 h1:YfKFowiIMvtgl1UERQoTPPToxltDeZfbj4H7dVUCwmM=
golang.org/x/sys v0.23.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
golang.org/x/text v0.17.0 h1:XtiM5bkSOt+ewxlOE/aE/AKEHibwj/6gvWMl9Rsh0Qc=
golang.org/x/text v0.17.0/go.mod h1:BuEKDfySbSR4drPmRPG/7iBdf8hvFMuRexcpahXilzY=
golang.org/x/time v0.5.0 h1:o7cqy6amK/52YcAKIPlM3a+Fpj35zvRj2TP+e1xFSfk=
golang.org/x/time v0.5.0/go.mod h1:3BpzKBy/shNhVucY/MWOyx10tF3SFh9QdLuxbVysPQM=
golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
golang.org/x/tools v0.0.0-20190907020128-2ca718005c18/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
golang.org/x/tools v0.0.0-20200619180055-7c47624df98f/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
golang.org/x/tools v0.0.0-20210106214847-113979e3529a/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
golang.org/x/tools v0.21.1-0.20240508182429-e35e4ccd0d2d h1:vU5i/LfpvrRCpgM/VPfJLg5KjxD3E+hfT1SH+d9zLwg=
golang.org/x/tools v0.21.1-0.20240508182429-e35e4ccd0d2d/go.mod h1:aiJjzUbINMkxbQROHiO6hDPo2LHcIPhhQsa9DLh0yGk=
golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
golang.org/x/xerrors v0.0.0-20220907171357-04be3eba64a2 h1:H2TDz8ibqkAF6YGhCdN3jS9O0/s90v0rJh3X/OLHEUk=
golang.org/x/xerrors v0.0.0-20220907171357-04be3eba64a2/go.mod h1:K8+ghG5WaK9qNqU5K3HdILfMLy1f3aNYFI/wnl100a8=
google.golang.org/protobuf v1.34.2 h1:6xV6lTsCfpGD21XK49h7MhtcApnLqkfYgPcdHftf6hg=
google.golang.org/protobuf v1.34.2/go.mod h1:qYOHts0dSfpeUzUFpOMr/WGzszTmLH+DiWniOlNbLDw=
gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=
gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
gopkg.in/ini.v1 v1.67.0 h1:Dgnx+6+nfE+IfzjUEISNeydPJh9AXNNsWbGP9KzCsOA=
gopkg.in/ini.v1 v1.67.0/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
gopkg.in/nullbio/null.v6 v6.0.0-20161116030900-40264a2e6b79 h1:FpCr9V8wuOei4BAen+93HtVJ+XSi+KPbaPKm0Vj5R64=
gopkg.in/nullbio/null.v6 v6.0.0-20161116030900-40264a2e6b79/go.mod h1:gWkaRU7CoXpezCBWfWjm3999QqS+1pYPXGbqQCTMzo8=
gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.2.5/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
gotest.tools v2.2.0+incompatible h1:VsBPFP1AI068pPrMxtb/S8Zkgf9xEmTLJjfM+P5UIEo=
gotest.tools v2.2.0+incompatible/go.mod h1:DsYFclhRJ6vuDpmuTbkuFWG+y2sxOXAzmJt81HFBacw=
nullprogram.com/x/optparse v1.0.0/go.mod h1:KdyPE+Igbe0jQUrVfMqDMeJQIJZEuyV7pjYmp6pbG50=
rsc.io/pdf v0.1.1/go.mod h1:n8OzWcQ6Sp37PL01nO98y4iUCRdTGarVfzxY20ICaU4=

View file

@ -1,339 +0,0 @@
package metrics
import (
"context"
"encoding/json"
"errors"
"io"
"net/http"
"strings"
"syscall"
"time"
ee "github.com/lbryio/lbry.go/v2/extras/errors"
"github.com/lbryio/lbry.go/v2/extras/stop"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/client_golang/prometheus/promauto"
"github.com/prometheus/client_golang/prometheus/promhttp"
log "github.com/sirupsen/logrus"
)
type Server struct {
srv *http.Server
stop *stop.Stopper
}
func NewServer(address string, path string) *Server {
h := http.NewServeMux()
h.Handle(path, promhttp.Handler())
return &Server{
srv: &http.Server{
Addr: address,
Handler: h,
//https://blog.cloudflare.com/the-complete-guide-to-golang-net-http-timeouts/
//https://blog.cloudflare.com/exposing-go-on-the-internet/
ReadTimeout: 5 * time.Second,
WriteTimeout: 10 * time.Second,
IdleTimeout: 120 * time.Second,
},
stop: stop.New(),
}
}
func (s *Server) Start() {
s.stop.Add(1)
go func() {
defer s.stop.Done()
err := s.srv.ListenAndServe()
if err != nil && !errors.Is(err, http.ErrServerClosed) {
log.Error(err)
}
}()
}
func (s *Server) Shutdown() {
_ = s.srv.Shutdown(context.Background())
s.stop.StopAndWait()
}
const (
ns = "reflector"
subsystemCache = "cache"
subsystemITTT = "ittt"
labelDirection = "direction"
labelErrorType = "error_type"
DirectionUpload = "upload" // to reflector
DirectionDownload = "download" // from reflector
LabelCacheType = "cache_type"
LabelComponent = "component"
LabelSource = "source"
errConnReset = "conn_reset"
errReadConnReset = "read_conn_reset"
errWriteConnReset = "write_conn_reset"
errReadConnTimedOut = "read_conn_timed_out"
errNoNetworkActivity = "no_network_activity"
errWriteConnTimedOut = "write_conn_timed_out"
errWriteBrokenPipe = "write_broken_pipe"
errEPipe = "e_pipe"
errETimedout = "e_timedout"
errIOTimeout = "io_timeout"
errUnexpectedEOF = "unexpected_eof"
errUnexpectedEOFStr = "unexpected_eof_str"
errJSONSyntax = "json_syntax"
errBlobTooBig = "blob_too_big"
errInvalidPeerJSON = "invalid_peer_json"
errInvalidPeerData = "invalid_peer_data"
errRequestTooLarge = "request_too_large"
errDeadlineExceeded = "deadline_exceeded"
errHashMismatch = "hash_mismatch"
errProtectedBlob = "protected_blob"
errInvalidBlobHash = "invalid_blob_hash"
errZeroByteBlob = "zero_byte_blob"
errInvalidCharacter = "invalid_character"
errBlobNotFound = "blob_not_found"
errNoErr = "no_error"
errQuicProto = "quic_protocol_violation"
errOther = "other"
)
var (
ErrorCount = promauto.NewCounterVec(prometheus.CounterOpts{
Namespace: ns,
Name: "error_total",
Help: "Total number of errors",
}, []string{labelDirection, labelErrorType})
BlobDownloadCount = promauto.NewCounter(prometheus.CounterOpts{
Namespace: ns,
Name: "blob_download_total",
Help: "Total number of blobs downloaded from reflector",
})
PeerDownloadCount = promauto.NewCounter(prometheus.CounterOpts{
Namespace: ns,
Name: "peer_download_total",
Help: "Total number of blobs downloaded from reflector through tcp protocol",
})
Http3DownloadCount = promauto.NewCounter(prometheus.CounterOpts{
Namespace: ns,
Name: "http3_blob_download_total",
Help: "Total number of blobs downloaded from reflector through QUIC protocol",
})
HttpDownloadCount = promauto.NewCounter(prometheus.CounterOpts{
Namespace: ns,
Name: "http_blob_download_total",
Help: "Total number of blobs downloaded from reflector through HTTP protocol",
})
CacheHitCount = promauto.NewCounterVec(prometheus.CounterOpts{
Namespace: ns,
Subsystem: subsystemCache,
Name: "hit_total",
Help: "Total number of blobs retrieved from the cache storage",
}, []string{LabelCacheType, LabelComponent})
ThisHitCount = promauto.NewCounter(prometheus.CounterOpts{
Namespace: ns,
Subsystem: subsystemITTT,
Name: "this_hit_total",
Help: "Total number of blobs retrieved from the this storage",
})
ThatHitCount = promauto.NewCounter(prometheus.CounterOpts{
Namespace: ns,
Subsystem: subsystemITTT,
Name: "that_hit_total",
Help: "Total number of blobs retrieved from the that storage",
})
CacheMissCount = promauto.NewCounterVec(prometheus.CounterOpts{
Namespace: ns,
Subsystem: subsystemCache,
Name: "miss_total",
Help: "Total number of blobs retrieved from origin rather than cache storage",
}, []string{LabelCacheType, LabelComponent})
CacheOriginRequestsCount = promauto.NewGaugeVec(prometheus.GaugeOpts{
Namespace: ns,
Subsystem: subsystemCache,
Name: "origin_requests_total",
Help: "How many Get requests are in flight from the cache to the origin",
}, []string{LabelCacheType, LabelComponent})
//during thundering-herd situations, the metric below should be a lot smaller than the metric above
CacheWaitingRequestsCount = promauto.NewGaugeVec(prometheus.GaugeOpts{
Namespace: ns,
Subsystem: subsystemCache,
Name: "waiting_requests_total",
Help: "How many cache requests are waiting for an in-flight origin request",
}, []string{LabelCacheType, LabelComponent})
CacheLRUEvictCount = promauto.NewCounterVec(prometheus.CounterOpts{
Namespace: ns,
Subsystem: subsystemCache,
Name: "evict_total",
Help: "Count of blobs evicted from cache",
}, []string{LabelCacheType, LabelComponent})
CacheRetrievalSpeed = promauto.NewGaugeVec(prometheus.GaugeOpts{
Namespace: ns,
Name: "speed_mbps",
Help: "Speed of blob retrieval from cache or from origin",
}, []string{LabelCacheType, LabelComponent, LabelSource})
BlobUploadCount = promauto.NewCounter(prometheus.CounterOpts{
Namespace: ns,
Name: "blob_upload_total",
Help: "Total number of blobs uploaded to reflector",
})
SDBlobUploadCount = promauto.NewCounter(prometheus.CounterOpts{
Namespace: ns,
Name: "sdblob_upload_total",
Help: "Total number of SD blobs (and therefore streams) uploaded to reflector",
})
MtrInBytesTcp = promauto.NewCounter(prometheus.CounterOpts{
Namespace: ns,
Name: "tcp_in_bytes",
Help: "Total number of bytes downloaded through TCP",
})
MtrOutBytesTcp = promauto.NewCounter(prometheus.CounterOpts{
Namespace: ns,
Name: "tcp_out_bytes",
Help: "Total number of bytes streamed out through TCP",
})
MtrInBytesUdp = promauto.NewCounter(prometheus.CounterOpts{
Namespace: ns,
Name: "udp_in_bytes",
Help: "Total number of bytes downloaded through UDP",
})
MtrInBytesHttp = promauto.NewCounter(prometheus.CounterOpts{
Namespace: ns,
Name: "http_in_bytes",
Help: "Total number of bytes downloaded through HTTP",
})
MtrOutBytesUdp = promauto.NewCounter(prometheus.CounterOpts{
Namespace: ns,
Name: "udp_out_bytes",
Help: "Total number of bytes streamed out through UDP",
})
MtrOutBytesHttp = promauto.NewCounter(prometheus.CounterOpts{
Namespace: ns,
Name: "http_out_bytes",
Help: "Total number of bytes streamed out through UDP",
})
MtrInBytesReflector = promauto.NewCounter(prometheus.CounterOpts{
Namespace: ns,
Name: "reflector_in_bytes",
Help: "Total number of incoming bytes (from users)",
})
MtrOutBytesReflector = promauto.NewCounter(prometheus.CounterOpts{
Namespace: ns,
Name: "s3_out_bytes",
Help: "Total number of outgoing bytes (to S3)",
})
MtrInBytesS3 = promauto.NewCounter(prometheus.CounterOpts{
Namespace: ns,
Name: "s3_in_bytes",
Help: "Total number of incoming bytes (from S3-CF)",
})
Http3BlobReqQueue = promauto.NewGauge(prometheus.GaugeOpts{
Namespace: ns,
Name: "http3_blob_request_queue_size",
Help: "Blob requests of https queue size",
})
HttpBlobReqQueue = promauto.NewGauge(prometheus.GaugeOpts{
Namespace: ns,
Name: "http_blob_request_queue_size",
Help: "Blob requests queue size of the HTTP protocol",
})
RoutinesQueue = promauto.NewGaugeVec(prometheus.GaugeOpts{
Namespace: ns,
Name: "routines",
Help: "routines running by type",
}, []string{"package", "kind"})
)
func CacheLabels(name, component string) prometheus.Labels {
return prometheus.Labels{
LabelCacheType: name,
LabelComponent: component,
}
}
func TrackError(direction string, e error) (shouldLog bool) { // shouldLog is a hack, but whatever
if e == nil {
return
}
err := ee.Wrap(e, 0)
errType := errOther
if strings.Contains(err.Error(), "i/o timeout") {
errType = errIOTimeout
} else if errors.Is(e, syscall.ECONNRESET) {
// Looks like we're getting this when direction == "download", but read_conn_reset and
// write_conn_reset when its "upload"
errType = errConnReset
} else if errors.Is(e, context.DeadlineExceeded) {
errType = errDeadlineExceeded
} else if strings.Contains(err.Error(), "read: connection reset by peer") { // the other side closed the connection using TCP reset
errType = errReadConnReset
} else if strings.Contains(err.Error(), "write: connection reset by peer") { // the other side closed the connection using TCP reset
errType = errWriteConnReset
} else if errors.Is(e, syscall.ETIMEDOUT) {
errType = errETimedout
} else if strings.Contains(err.Error(), "read: connection timed out") { // the other side closed the connection using TCP reset
//log.Warnln("read conn timed out is not the same as ETIMEDOUT")
errType = errReadConnTimedOut
} else if strings.Contains(err.Error(), "NO_ERROR: No recent network activity") { // the other side closed the QUIC connection
//log.Warnln("read conn timed out is not the same as ETIMEDOUT")
errType = errNoNetworkActivity
} else if strings.Contains(err.Error(), "write: connection timed out") {
errType = errWriteConnTimedOut
} else if errors.Is(e, io.ErrUnexpectedEOF) {
errType = errUnexpectedEOF
} else if strings.Contains(err.Error(), "unexpected EOF") { // tried to read from closed pipe or socket
errType = errUnexpectedEOFStr
} else if errors.Is(e, syscall.EPIPE) {
errType = errEPipe
} else if strings.Contains(err.Error(), "write: broken pipe") { // tried to write to a pipe or socket that was closed by the peer
// I believe this is the same as EPipe when direction == "download", but not for upload
errType = errWriteBrokenPipe
//} else if errors.Is(e, reflector.ErrBlobTooBig) { # this creates a circular import
// errType = errBlobTooBig
} else if strings.Contains(err.Error(), "blob must be at most") {
//log.Warnln("blob must be at most X bytes is not the same as ErrBlobTooBig")
errType = errBlobTooBig
} else if strings.Contains(err.Error(), "invalid json request") {
errType = errInvalidPeerJSON
} else if strings.Contains(err.Error(), "Invalid data") {
errType = errInvalidPeerData
} else if strings.Contains(err.Error(), "request is too large") {
errType = errRequestTooLarge
} else if strings.Contains(err.Error(), "Invalid blob hash length") {
errType = errInvalidBlobHash
} else if strings.Contains(err.Error(), "hash of received blob data does not match hash from send request") {
errType = errHashMismatch
} else if strings.Contains(err.Error(), "blob not found") {
errType = errBlobNotFound
} else if strings.Contains(err.Error(), "requested blob is protected") {
errType = errProtectedBlob
} else if strings.Contains(err.Error(), "0-byte blob received") {
errType = errZeroByteBlob
} else if strings.Contains(err.Error(), "PROTOCOL_VIOLATION: tried to retire connection") {
errType = errQuicProto
} else if strings.Contains(err.Error(), "invalid character") {
errType = errInvalidCharacter
} else if _, ok := e.(*json.SyntaxError); ok {
errType = errJSONSyntax
} else if strings.Contains(err.Error(), "NO_ERROR") {
errType = errNoErr
} else {
log.Warnf("error '%s' for direction '%s' is not being tracked", err.TypeName(), direction)
shouldLog = true
}
ErrorCount.With(map[string]string{
labelDirection: direction,
labelErrorType: errType,
}).Inc()
return
}

View file

@ -1,347 +0,0 @@
package lite_db
import (
"database/sql"
"time"
"github.com/lbryio/lbry.go/v2/extras/errors"
qt "github.com/lbryio/lbry.go/v2/extras/query"
"github.com/go-sql-driver/mysql"
log "github.com/sirupsen/logrus"
"github.com/volatiletech/null/v8"
)
// SdBlob is a special blob that contains information on the rest of the blobs in the stream
type SdBlob struct {
StreamName string `json:"stream_name"`
Blobs []struct {
Length int `json:"length"`
BlobNum int `json:"blob_num"`
BlobHash string `json:"blob_hash,omitempty"`
IV string `json:"iv"`
} `json:"blobs"`
StreamType string `json:"stream_type"`
Key string `json:"key"`
SuggestedFileName string `json:"suggested_file_name"`
StreamHash string `json:"stream_hash"`
}
// SQL implements the DB interface
type SQL struct {
conn *sql.DB
TrackAccessTime bool
}
func logQuery(query string, args ...interface{}) {
s, err := qt.InterpolateParams(query, args...)
if err != nil {
log.Errorln(err)
} else {
log.Debugln(s)
}
}
// Connect will create a connection to the database
func (s *SQL) Connect(dsn string) error {
var err error
// interpolateParams is necessary. otherwise uploading a stream with thousands of blobs
// will hit MySQL's max_prepared_stmt_count limit because the prepared statements are all
// opened inside a transaction. closing them manually doesn't seem to help
dsn += "?parseTime=1&collation=utf8mb4_unicode_ci&interpolateParams=1"
s.conn, err = sql.Open("mysql", dsn)
if err != nil {
return errors.Err(err)
}
s.conn.SetMaxIdleConns(12)
return errors.Err(s.conn.Ping())
}
// AddBlob adds a blob to the database.
func (s *SQL) AddBlob(hash string, length int) error {
if s.conn == nil {
return errors.Err("not connected")
}
_, err := s.insertBlob(hash, length)
return err
}
func (s *SQL) insertBlob(hash string, length int) (int64, error) {
if length <= 0 {
return 0, errors.Err("length must be positive")
}
const isStored = true
now := time.Now()
args := []interface{}{hash, isStored, length, now}
blobID, err := s.exec(
"INSERT INTO blob_ (hash, is_stored, length, last_accessed_at) VALUES ("+qt.Qs(len(args))+") ON DUPLICATE KEY UPDATE is_stored = (is_stored or VALUES(is_stored)), last_accessed_at=VALUES(last_accessed_at)",
args...,
)
if err != nil {
return 0, err
}
if blobID == 0 {
err = s.conn.QueryRow("SELECT id FROM blob_ WHERE hash = ?", hash).Scan(&blobID)
if err != nil {
return 0, errors.Err(err)
}
if blobID == 0 {
return 0, errors.Err("blob ID is 0 even after INSERTing and SELECTing")
}
}
return blobID, nil
}
// HasBlob checks if the database contains the blob information.
func (s *SQL) HasBlob(hash string) (bool, error) {
exists, err := s.HasBlobs([]string{hash})
if err != nil {
return false, err
}
return exists[hash], nil
}
// HasBlobs checks if the database contains the set of blobs and returns a bool map.
func (s *SQL) HasBlobs(hashes []string) (map[string]bool, error) {
exists, streamsNeedingTouch, err := s.hasBlobs(hashes)
_ = s.touch(streamsNeedingTouch)
return exists, err
}
func (s *SQL) touch(blobIDs []uint64) error {
if len(blobIDs) == 0 {
return nil
}
query := "UPDATE blob_ SET last_accessed_at = ? WHERE id IN (" + qt.Qs(len(blobIDs)) + ")"
args := make([]interface{}, len(blobIDs)+1)
args[0] = time.Now()
for i := range blobIDs {
args[i+1] = blobIDs[i]
}
startTime := time.Now()
_, err := s.exec(query, args...)
log.Debugf("blobs access query touched %d blobs and took %s", len(blobIDs), time.Since(startTime))
return errors.Err(err)
}
func (s *SQL) hasBlobs(hashes []string) (map[string]bool, []uint64, error) {
if s.conn == nil {
return nil, nil, errors.Err("not connected")
}
var (
hash string
blobID uint64
lastAccessedAt null.Time
)
var needsTouch []uint64
exists := make(map[string]bool)
touchDeadline := time.Now().AddDate(0, 0, -1) // touch blob if last accessed before this time
maxBatchSize := 10000
doneIndex := 0
for len(hashes) > doneIndex {
sliceEnd := doneIndex + maxBatchSize
if sliceEnd > len(hashes) {
sliceEnd = len(hashes)
}
log.Debugf("getting hashes[%d:%d] of %d", doneIndex, sliceEnd, len(hashes))
batch := hashes[doneIndex:sliceEnd]
// TODO: this query doesn't work for SD blobs, which are not in the stream_blob table
query := `SELECT hash, id, last_accessed_at
FROM blob_
WHERE is_stored = ? and hash IN (` + qt.Qs(len(batch)) + `)`
args := make([]interface{}, len(batch)+1)
args[0] = true
for i := range batch {
args[i+1] = batch[i]
}
logQuery(query, args...)
err := func() error {
startTime := time.Now()
rows, err := s.conn.Query(query, args...)
log.Debugf("hashes query took %s", time.Since(startTime))
if err != nil {
return errors.Err(err)
}
defer closeRows(rows)
for rows.Next() {
err := rows.Scan(&hash, &blobID, &lastAccessedAt)
if err != nil {
return errors.Err(err)
}
exists[hash] = true
if s.TrackAccessTime && (!lastAccessedAt.Valid || lastAccessedAt.Time.Before(touchDeadline)) {
needsTouch = append(needsTouch, blobID)
}
}
err = rows.Err()
if err != nil {
return errors.Err(err)
}
doneIndex += len(batch)
return nil
}()
if err != nil {
return nil, nil, err
}
}
return exists, needsTouch, nil
}
// Delete will remove the blob from the db
func (s *SQL) Delete(hash string) error {
_, err := s.exec("UPDATE blob_ set is_stored = ? WHERE hash = ?", 0, hash)
return errors.Err(err)
}
// AddSDBlob insert the SD blob and all the content blobs. The content blobs are marked as "not stored",
// but they are tracked so reflector knows what it is missing.
func (s *SQL) AddSDBlob(sdHash string, sdBlobLength int) error {
if s.conn == nil {
return errors.Err("not connected")
}
_, err := s.insertBlob(sdHash, sdBlobLength)
return err
}
// GetHashRange gets the smallest and biggest hashes in the db
func (s *SQL) GetLRUBlobs(maxBlobs int) ([]string, error) {
if s.conn == nil {
return nil, errors.Err("not connected")
}
query := "SELECT hash from blob_ where is_stored = ? order by last_accessed_at limit ?"
const isStored = true
logQuery(query, isStored, maxBlobs)
rows, err := s.conn.Query(query, isStored, maxBlobs)
if err != nil {
return nil, errors.Err(err)
}
defer closeRows(rows)
blobs := make([]string, 0, maxBlobs)
for rows.Next() {
var hash string
err := rows.Scan(&hash)
if err != nil {
return nil, errors.Err(err)
}
blobs = append(blobs, hash)
}
return blobs, nil
}
func (s *SQL) AllBlobs() ([]string, error) {
if s.conn == nil {
return nil, errors.Err("not connected")
}
query := "SELECT hash from blob_ where is_stored = ?" //TODO: maybe sorting them makes more sense?
const isStored = true
logQuery(query, isStored)
rows, err := s.conn.Query(query, isStored)
if err != nil {
return nil, errors.Err(err)
}
defer closeRows(rows)
totalBlobs, err := s.BlobsCount()
if err != nil {
return nil, err
}
blobs := make([]string, 0, totalBlobs)
for rows.Next() {
var hash string
err := rows.Scan(&hash)
if err != nil {
return nil, errors.Err(err)
}
blobs = append(blobs, hash)
}
return blobs, nil
}
func (s *SQL) BlobsCount() (int, error) {
if s.conn == nil {
return 0, errors.Err("not connected")
}
query := "SELECT count(id) from blob_ where is_stored = ?" //TODO: maybe sorting them makes more sense?
const isStored = true
logQuery(query, isStored)
var count int
err := s.conn.QueryRow(query, isStored).Scan(&count)
return count, errors.Err(err)
}
func closeRows(rows *sql.Rows) {
if rows != nil {
err := rows.Close()
if err != nil {
log.Error("error closing rows: ", err)
}
}
}
func (s *SQL) exec(query string, args ...interface{}) (int64, error) {
logQuery(query, args...)
attempt, maxAttempts := 0, 3
Retry:
attempt++
result, err := s.conn.Exec(query, args...)
if isLockTimeoutError(err) {
if attempt <= maxAttempts {
//Error 1205: Lock wait timeout exceeded; try restarting transaction
goto Retry
}
err = errors.Prefix("Lock timeout for query "+query, err)
}
if err != nil {
return 0, errors.Err(err)
}
lastID, err := result.LastInsertId()
return lastID, errors.Err(err)
}
func isLockTimeoutError(err error) bool {
e, ok := err.(*mysql.MySQLError)
return ok && e != nil && e.Number == 1205
}
/* SQL schema
in prod make sure you use latin1 or utf8 charset, NOT utf8mb4. that's a waste of space.
CREATE TABLE `blob_` (
`id` bigint unsigned NOT NULL AUTO_INCREMENT,
`hash` char(96) NOT NULL,
`is_stored` tinyint(1) NOT NULL DEFAULT '0',
`length` bigint unsigned DEFAULT NULL,
`last_accessed_at` datetime DEFAULT CURRENT_TIMESTAMP,
PRIMARY KEY (`id`),
UNIQUE KEY `id` (`id`),
UNIQUE KEY `blob_hash_idx` (`hash`),
KEY `blob_last_accessed_idx` (`last_accessed_at`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1
*/

10
main.go
View file

@ -1,15 +1,7 @@
package main
import (
"github.com/lbryio/reflector.go/cmd"
"github.com/google/gops/agent"
log "github.com/sirupsen/logrus"
)
import "github.com/lbryio/reflector.go/cmd"
func main() {
if err := agent.Listen(agent.Options{}); err != nil {
log.Fatal(err)
}
cmd.Execute()
}

View file

@ -1,58 +1,3 @@
package meta
import (
"fmt"
"strconv"
"time"
)
var (
name = "prism-bin"
version = "unknown"
commit = "unknown"
commitLong = "unknown"
branch = "unknown"
Time = "unknown"
BuildTime time.Time
)
// Name returns main application name
func Name() string {
return name
}
// Version returns current application version
func Version() string {
return version
}
// FullName returns current app version, commit and build time
func FullName() string {
return fmt.Sprintf(
`Name: %v
Version: %v
branch: %v
commit: %v
commit long: %v
build date: %v`, Name(), Version(), branch, commit, commitLong, BuildTime.String())
}
func init() {
if Time != "" {
t, err := strconv.Atoi(Time)
if err == nil {
BuildTime = time.Unix(int64(t), 0).UTC()
}
}
}
func VersionString() string {
var buildTime string
if BuildTime.IsZero() {
buildTime = "<now>"
} else {
buildTime = BuildTime.Format(time.RFC3339)
}
return fmt.Sprintf("version %s, built %s", version, buildTime)
}
var Version = ""

316
peer/server.go Normal file
View file

@ -0,0 +1,316 @@
package peer
import (
"bufio"
"crypto/sha512"
"encoding/hex"
"encoding/json"
"io"
"net"
"strings"
"time"
"github.com/lbryio/lbry.go/errors"
"github.com/lbryio/lbry.go/stop"
"github.com/lbryio/reflector.go/store"
"github.com/davecgh/go-spew/spew"
log "github.com/sirupsen/logrus"
)
const (
// DefaultPort is the port the peer server listens on if not passed in.
DefaultPort = 3333
// LbrycrdAddress to be used when paying for data. Not implemented yet.
LbrycrdAddress = "bJxKvpD96kaJLriqVajZ7SaQTsWWyrGQct"
)
// Server is an instance of a peer server that houses the listener and store.
type Server struct {
store store.BlobStore
closed bool
grp *stop.Group
}
// NewServer returns an initialized Server pointer.
func NewServer(store store.BlobStore) *Server {
return &Server{
store: store,
grp: stop.New(),
}
}
// Shutdown gracefully shuts down the peer server.
func (s *Server) Shutdown() {
log.Debug("shutting down peer server...")
s.grp.StopAndWait()
log.Debug("peer server stopped")
}
// Start starts the server listener to handle connections.
func (s *Server) Start(address string) error {
log.Println("peer listening on " + address)
l, err := net.Listen("tcp4", address)
if err != nil {
return err
}
go s.listenForShutdown(l)
s.grp.Add(1)
go func() {
s.listenAndServe(l)
s.grp.Done()
}()
return nil
}
func (s *Server) listenForShutdown(listener net.Listener) {
<-s.grp.Ch()
s.closed = true
err := listener.Close()
if err != nil {
log.Error("error closing listener for peer server - ", err)
}
}
func (s *Server) listenAndServe(listener net.Listener) {
for {
conn, err := listener.Accept()
if err != nil {
if s.closed {
return
}
log.Error(err)
} else {
s.grp.Add(1)
go func() {
s.handleConnection(conn)
s.grp.Done()
}()
}
}
}
func (s *Server) handleConnection(conn net.Conn) {
defer func() {
if err := conn.Close(); err != nil {
log.Error(errors.Prefix("closing peer conn", err))
}
}()
timeoutDuration := 5 * time.Second
for {
var request []byte
var response []byte
err := conn.SetReadDeadline(time.Now().Add(timeoutDuration))
if err != nil {
log.Error(errors.FullTrace(err))
}
request, err = readNextRequest(conn)
if err != nil {
if err != io.EOF {
log.Errorln(err)
}
return
}
err = conn.SetReadDeadline(time.Time{})
if err != nil {
log.Error(errors.FullTrace(err))
}
if strings.Contains(string(request), `"requested_blobs"`) {
log.Debugln("received availability request")
response, err = s.handleAvailabilityRequest(request)
} else if strings.Contains(string(request), `"blob_data_payment_rate"`) {
log.Debugln("received rate negotiation request")
response, err = s.handlePaymentRateNegotiation(request)
} else if strings.Contains(string(request), `"requested_blob"`) {
log.Debugln("received blob request")
response, err = s.handleBlobRequest(request)
} else {
log.Errorln("invalid request")
spew.Dump(request)
return
}
if err != nil {
log.Error(err)
return
}
n, err := conn.Write(response)
if err != nil {
log.Errorln(err)
return
} else if n != len(response) {
log.Errorln(io.ErrShortWrite)
return
}
}
}
func (s *Server) handleAvailabilityRequest(data []byte) ([]byte, error) {
var request availabilityRequest
err := json.Unmarshal(data, &request)
if err != nil {
return []byte{}, err
}
availableBlobs := []string{}
for _, blobHash := range request.RequestedBlobs {
exists, err := s.store.Has(blobHash)
if err != nil {
return []byte{}, err
}
if exists {
availableBlobs = append(availableBlobs, blobHash)
}
}
return json.Marshal(availabilityResponse{LbrycrdAddress: LbrycrdAddress, AvailableBlobs: availableBlobs})
}
func (s *Server) handlePaymentRateNegotiation(data []byte) ([]byte, error) {
var request paymentRateRequest
err := json.Unmarshal(data, &request)
if err != nil {
return []byte{}, err
}
offerReply := paymentRateAccepted
if request.BlobDataPaymentRate < 0 {
offerReply = paymentRateTooLow
}
return json.Marshal(paymentRateResponse{BlobDataPaymentRate: offerReply})
}
func (s *Server) handleBlobRequest(data []byte) ([]byte, error) {
var request blobRequest
err := json.Unmarshal(data, &request)
if err != nil {
return []byte{}, err
}
log.Println("Sending blob " + request.RequestedBlob[:8])
blob, err := s.store.Get(request.RequestedBlob)
if err != nil {
return []byte{}, err
}
response, err := json.Marshal(blobResponse{IncomingBlob: incomingBlob{
BlobHash: GetBlobHash(blob),
Length: len(blob),
}})
if err != nil {
return []byte{}, err
}
return append(response, blob...), nil
}
func readNextRequest(conn net.Conn) ([]byte, error) {
request := make([]byte, 0)
eof := false
buf := bufio.NewReader(conn)
for {
chunk, err := buf.ReadBytes('}')
if err != nil {
if err != io.EOF {
log.Errorln("read error:", err)
return request, err
}
eof = true
}
//log.Debugln("got", len(chunk), "bytes.")
//spew.Dump(chunk)
if len(chunk) > 0 {
request = append(request, chunk...)
if len(request) > maxRequestSize {
return request, errRequestTooLarge
}
// yes, this is how the peer protocol knows when the request finishes
if isValidJSON(request) {
break
}
}
if eof {
break
}
}
//log.Debugln("total size:", len(request))
//if len(request) > 0 {
// spew.Dump(request)
//}
if len(request) == 0 && eof {
return []byte{}, io.EOF
}
return request, nil
}
func isValidJSON(b []byte) bool {
var r json.RawMessage
return json.Unmarshal(b, &r) == nil
}
// GetBlobHash returns the sha512 hash hex encoded string of the blob byte slice.
func GetBlobHash(blob []byte) string {
hashBytes := sha512.Sum384(blob)
return hex.EncodeToString(hashBytes[:])
}
const (
maxRequestSize = 64 * (2 ^ 10) // 64kb
paymentRateAccepted = "RATE_ACCEPTED"
paymentRateTooLow = "RATE_TOO_LOW"
//ToDo: paymentRateUnset is not used but exists in the protocol.
//paymentRateUnset = "RATE_UNSET"
)
var errRequestTooLarge = errors.Base("request is too large")
type availabilityRequest struct {
LbrycrdAddress bool `json:"lbrycrd_address"`
RequestedBlobs []string `json:"requested_blobs"`
}
type availabilityResponse struct {
LbrycrdAddress string `json:"lbrycrd_address"`
AvailableBlobs []string `json:"available_blobs"`
}
type paymentRateRequest struct {
BlobDataPaymentRate float64 `json:"blob_data_payment_rate"`
}
type paymentRateResponse struct {
BlobDataPaymentRate string `json:"blob_data_payment_rate"`
}
type blobRequest struct {
RequestedBlob string `json:"requested_blob"`
}
type incomingBlob struct {
Error string `json:"error,omitempty"`
BlobHash string `json:"blob_hash"`
Length int `json:"length"`
}
type blobResponse struct {
IncomingBlob incomingBlob `json:"incoming_blob"`
}

View file

@ -2,10 +2,7 @@ package peer
import (
"bytes"
"io"
"net"
"testing"
"time"
"github.com/lbryio/reflector.go/store"
)
@ -37,7 +34,7 @@ var availabilityRequests = []pair{
}
func getServer(t *testing.T, withBlobs bool) *Server {
st := store.NewMemStore()
st := store.MemoryBlobStore{}
if withBlobs {
for k, v := range blobs {
err := st.Put(k, v)
@ -46,7 +43,7 @@ func getServer(t *testing.T, withBlobs bool) *Server {
}
}
}
return NewServer(st)
return NewServer(&st)
}
func TestAvailabilityRequest_NoBlobs(t *testing.T) {
@ -78,62 +75,3 @@ func TestAvailabilityRequest_WithBlobs(t *testing.T) {
}
}
}
func TestRequestFromConnection(t *testing.T) {
s := getServer(t, true)
err := s.Start("127.0.0.1:50505")
defer s.Shutdown()
if err != nil {
t.Error("error starting server", err)
}
for _, p := range availabilityRequests {
conn, err := net.Dial("tcp", "127.0.0.1:50505")
if err != nil {
t.Error("error opening connection", err)
}
defer func() { _ = conn.Close() }()
response := make([]byte, 8192)
_, err = conn.Write(p.request)
if err != nil {
t.Error("error writing", err)
}
_, err = conn.Read(response)
if err != nil {
t.Error("error reading", err)
}
if !bytes.Equal(response[:len(p.response)], p.response) {
t.Errorf("Response did not match expected response.\nExpected: %s\nGot: %s", string(p.response), string(response))
}
}
}
func TestInvalidData(t *testing.T) {
s := getServer(t, true)
err := s.Start("127.0.0.1:50503")
defer s.Shutdown()
if err != nil {
t.Error("error starting server", err)
}
conn, err := net.Dial("tcp", "127.0.0.1:50503")
if err != nil {
t.Error("error opening connection", err)
}
defer func() { _ = conn.Close() }()
response := make([]byte, 8192)
_, err = conn.Write([]byte("hello dear server, I would like blobs. Please"))
if err != nil {
t.Error("error writing", err)
}
err = conn.SetReadDeadline(time.Now().Add(5 * time.Second))
if err != nil {
t.Error("error setting read deadline", err)
}
_, err = conn.Read(response)
if err != io.EOF {
t.Error("error reading", err)
}
println(response)
}

View file

@ -7,14 +7,14 @@ import (
"github.com/lbryio/reflector.go/cluster"
"github.com/lbryio/reflector.go/db"
"github.com/lbryio/reflector.go/dht"
"github.com/lbryio/reflector.go/dht/bits"
"github.com/lbryio/reflector.go/peer"
"github.com/lbryio/reflector.go/reflector"
"github.com/lbryio/reflector.go/server/peer"
"github.com/lbryio/reflector.go/store"
"github.com/lbryio/lbry.go/v2/dht"
"github.com/lbryio/lbry.go/v2/dht/bits"
"github.com/lbryio/lbry.go/v2/extras/errors"
"github.com/lbryio/lbry.go/v2/extras/stop"
"github.com/lbryio/lbry.go/errors"
"github.com/lbryio/lbry.go/stop"
log "github.com/sirupsen/logrus"
)
@ -79,7 +79,7 @@ func New(conf *Config) *Prism {
dht: d,
cluster: c,
peer: peer.NewServer(conf.Blobs),
reflector: reflector.NewServer(conf.Blobs, conf.Blobs),
reflector: reflector.NewServer(conf.Blobs),
grp: stop.New(),
}

View file

@ -4,9 +4,8 @@ import (
"math/big"
"testing"
"github.com/lbryio/lbry.go/v2/dht/bits"
"github.com/davecgh/go-spew/spew"
"github.com/lbryio/reflector.go/dht/bits"
)
func TestAnnounceRange(t *testing.T) {

View file

@ -1,174 +0,0 @@
package publish
import "strings"
func guessMimeType(ext string) (string, string) {
if ext == "" {
return "application/octet-stream", "binary"
}
ext = strings.ToLower(strings.TrimLeft(strings.TrimSpace(ext), "."))
types := map[string]struct{ mime, t string }{
"a": {"application/octet-stream", "binary"},
"ai": {"application/postscript", "image"},
"aif": {"audio/x-aiff", "audio"},
"aifc": {"audio/x-aiff", "audio"},
"aiff": {"audio/x-aiff", "audio"},
"au": {"audio/basic", "audio"},
"avi": {"video/x-msvideo", "video"},
"bat": {"text/plain", "document"},
"bcpio": {"application/x-bcpio", "binary"},
"bin": {"application/octet-stream", "binary"},
"bmp": {"image/bmp", "image"},
"c": {"text/plain", "document"},
"cdf": {"application/x-netcdf", "binary"},
"cpio": {"application/x-cpio", "binary"},
"csh": {"application/x-csh", "binary"},
"css": {"text/css", "document"},
"csv": {"text/csv", "document"},
"dll": {"application/octet-stream", "binary"},
"doc": {"application/msword", "document"},
"dot": {"application/msword", "document"},
"dvi": {"application/x-dvi", "binary"},
"eml": {"message/rfc822", "document"},
"eps": {"application/postscript", "document"},
"epub": {"application/epub+zip", "document"},
"etx": {"text/x-setext", "document"},
"exe": {"application/octet-stream", "binary"},
"gif": {"image/gif", "image"},
"gtar": {"application/x-gtar", "binary"},
"h": {"text/plain", "document"},
"hdf": {"application/x-hdf", "binary"},
"htm": {"text/html", "document"},
"html": {"text/html", "document"},
"ico": {"image/vnd.microsoft.icon", "image"},
"ief": {"image/ief", "image"},
"iges": {"model/iges", "model"},
"jpe": {"image/jpeg", "image"},
"jpeg": {"image/jpeg", "image"},
"jpg": {"image/jpeg", "image"},
"js": {"application/javascript", "document"},
"json": {"application/json", "document"},
"ksh": {"text/plain", "document"},
"latex": {"application/x-latex", "binary"},
"m1v": {"video/mpeg", "video"},
"m3u": {"application/vnd.apple.mpegurl", "audio"},
"m3u8": {"application/vnd.apple.mpegurl", "audio"},
"man": {"application/x-troff-man", "document"},
"markdown": {"text/markdown", "document"},
"md": {"text/markdown", "document"},
"me": {"application/x-troff-me", "binary"},
"mht": {"message/rfc822", "document"},
"mhtml": {"message/rfc822", "document"},
"mif": {"application/x-mif", "binary"},
"mov": {"video/quicktime", "video"},
"movie": {"video/x-sgi-movie", "video"},
"mp2": {"audio/mpeg", "audio"},
"mp3": {"audio/mpeg", "audio"},
"mp4": {"video/mp4", "video"},
"mpa": {"video/mpeg", "video"},
"mpe": {"video/mpeg", "video"},
"mpeg": {"video/mpeg", "video"},
"mpg": {"video/mpeg", "video"},
"ms": {"application/x-troff-ms", "binary"},
"nc": {"application/x-netcdf", "binary"},
"nws": {"message/rfc822", "document"},
"o": {"application/octet-stream", "binary"},
"obj": {"application/octet-stream", "model"},
"oda": {"application/oda", "binary"},
"p12": {"application/x-pkcs12", "binary"},
"p7c": {"application/pkcs7-mime", "binary"},
"pbm": {"image/x-portable-bitmap", "image"},
"pdf": {"application/pdf", "document"},
"pfx": {"application/x-pkcs12", "binary"},
"pgm": {"image/x-portable-graymap", "image"},
"pl": {"text/plain", "document"},
"png": {"image/png", "image"},
"pnm": {"image/x-portable-anymap", "image"},
"pot": {"application/vnd.ms-powerpoint", "document"},
"ppa": {"application/vnd.ms-powerpoint", "document"},
"ppm": {"image/x-portable-pixmap", "image"},
"pps": {"application/vnd.ms-powerpoint", "document"},
"ppt": {"application/vnd.ms-powerpoint", "document"},
"ps": {"application/postscript", "document"},
"pwz": {"application/vnd.ms-powerpoint", "document"},
"py": {"text/x-python", "document"},
"pyc": {"application/x-python-code", "binary"},
"pyo": {"application/x-python-code", "binary"},
"qt": {"video/quicktime", "video"},
"ra": {"audio/x-pn-realaudio", "audio"},
"ram": {"application/x-pn-realaudio", "audio"},
"ras": {"image/x-cmu-raster", "image"},
"rdf": {"application/xml", "binary"},
"rgb": {"image/x-rgb", "image"},
"roff": {"application/x-troff", "binary"},
"rtx": {"text/richtext", "document"},
"sgm": {"text/x-sgml", "document"},
"sgml": {"text/x-sgml", "document"},
"sh": {"application/x-sh", "document"},
"shar": {"application/x-shar", "binary"},
"snd": {"audio/basic", "audio"},
"so": {"application/octet-stream", "binary"},
"src": {"application/x-wais-source", "binary"},
"stl": {"model/stl", "model"},
"sv4cpio": {"application/x-sv4cpio", "binary"},
"sv4crc": {"application/x-sv4crc", "binary"},
"svg": {"image/svg+xml", "image"},
"swf": {"application/x-shockwave-flash", "binary"},
"t": {"application/x-troff", "binary"},
"tar": {"application/x-tar", "binary"},
"tcl": {"application/x-tcl", "binary"},
"tex": {"application/x-tex", "binary"},
"texi": {"application/x-texinfo", "binary"},
"texinfo": {"application/x-texinfo", "binary"},
"tif": {"image/tiff", "image"},
"tiff": {"image/tiff", "image"},
"tr": {"application/x-troff", "binary"},
"tsv": {"text/tab-separated-values", "document"},
"txt": {"text/plain", "document"},
"ustar": {"application/x-ustar", "binary"},
"vcf": {"text/x-vcard", "document"},
"wav": {"audio/x-wav", "audio"},
"webm": {"video/webm", "video"},
"wiz": {"application/msword", "document"},
"wsdl": {"application/xml", "document"},
"xbm": {"image/x-xbitmap", "image"},
"xlb": {"application/vnd.ms-excel", "document"},
"xls": {"application/vnd.ms-excel", "document"},
"xml": {"text/xml", "document"},
"xpdl": {"application/xml", "document"},
"xpm": {"image/x-xpixmap", "image"},
"xsl": {"application/xml", "document"},
"xwd": {"image/x-xwindowdump", "image"},
"zip": {"application/zip", "binary"},
// These are non-standard types, commonly found in the wild.
"cbr": {"application/vnd.comicbook-rar", "document"},
"cbz": {"application/vnd.comicbook+zip", "document"},
"flac": {"audio/flac", "audio"},
"lbry": {"application/x-ext-lbry", "document"},
"m4v": {"video/m4v", "video"},
"mid": {"audio/midi", "audio"},
"midi": {"audio/midi", "audio"},
"mkv": {"video/x-matroska", "video"},
"mobi": {"application/x-mobipocket-ebook", "document"},
"oga": {"audio/ogg", "audio"},
"ogv": {"video/ogg", "video"},
"pct": {"image/pict", "image"},
"pic": {"image/pict", "image"},
"pict": {"image/pict", "image"},
"prc": {"application/x-mobipocket-ebook", "document"},
"rtf": {"application/rtf", "document"},
"xul": {"text/xul", "document"},
// microsoft is special and has its own "standard"
// https://docs.microsoft.com/en-us/windows/desktop/wmp/file-name-extensions
"wmv": {"video/x-ms-wmv", "video"},
}
if data, ok := types[ext]; ok {
return data.mime, data.t
}
return "application/x-ext-" + ext, "binary"
}

View file

@ -1,291 +0,0 @@
package publish
import (
"bytes"
"encoding/json"
"os"
"path/filepath"
"sort"
"github.com/lbryio/reflector.go/reflector"
"github.com/lbryio/lbry.go/v2/extras/errors"
"github.com/lbryio/lbry.go/v2/lbrycrd"
"github.com/lbryio/lbry.go/v2/stream"
pb "github.com/lbryio/types/v2/go"
"github.com/btcsuite/btcd/btcjson"
"github.com/btcsuite/btcd/chaincfg/chainhash"
"github.com/btcsuite/btcd/txscript"
"github.com/btcsuite/btcd/wire"
"github.com/btcsuite/btcutil"
"github.com/golang/protobuf/proto"
)
/* TODO:
import cert from wallet
get all utxos from chainquery
create transaction
sign it with the channel
track state of utxos across publishes from this channel so that we can just do one query to get utxos
prioritize only confirmed utxos
Handling all the issues we handle currently with lbrynet:
"Couldn't find private key for id",
"You already have a stream claim published under the name",
"Cannot publish using channel",
"txn-mempool-conflict",
"too-long-mempool-chain",
"Missing inputs",
"Not enough funds to cover this transaction",
*/
type Details struct {
Title string
Description string
Author string
Tags []string
ReleaseTime int64
}
func Publish(client *lbrycrd.Client, path, name, address string, details Details, reflectorAddress string) (*wire.MsgTx, *chainhash.Hash, error) {
if name == "" {
return nil, nil, errors.Err("name required")
}
//TODO: sign claim if publishing into channel
addr, err := btcutil.DecodeAddress(address, &lbrycrd.MainNetParams)
if errors.Is(err, btcutil.ErrUnknownAddressType) {
return nil, nil, errors.Err(`unknown address type. here's what you need to make this work:
- deprecatedrpc=validateaddress" and "deprecatedrpc=signrawtransaction" in your lbrycrd.conf
- github.com/btcsuite/btcd pinned to hash 306aecffea32
- github.com/btcsuite/btcutil pinned to 4c204d697803
- github.com/lbryio/lbry.go/v2 (make sure you have v2 at the end)`)
}
if err != nil {
return nil, nil, err
}
amount := 0.01
changeAddr := addr // TODO: fix this? or maybe its fine?
tx, err := baseTx(client, amount, changeAddr)
if err != nil {
return nil, nil, err
}
st, stPB, err := makeStream(path)
if err != nil {
return nil, nil, err
}
stPB.Author = details.Author
stPB.ReleaseTime = details.ReleaseTime
claim := &pb.Claim{
Title: details.Title,
Description: details.Description,
Type: &pb.Claim_Stream{Stream: stPB},
}
err = addClaimToTx(tx, claim, name, amount, addr)
if err != nil {
return nil, nil, err
}
// sign and send
signedTx, allInputsSigned, err := client.SignRawTransaction(tx)
if err != nil {
return nil, nil, err
}
if !allInputsSigned {
return nil, nil, errors.Err("not all inputs for the tx could be signed")
}
err = reflect(st, reflectorAddress)
if err != nil {
return nil, nil, err
}
txid, err := client.SendRawTransaction(signedTx, false)
if err != nil {
return nil, nil, err
}
return signedTx, txid, nil
}
// TODO: lots of assumptions. hardcoded values need to be passed in or calculated
func baseTx(client *lbrycrd.Client, amount float64, changeAddress btcutil.Address) (*wire.MsgTx, error) {
txFee := 0.0002 // TODO: estimate this better?
inputs, total, err := coinChooser(client, amount+txFee)
if err != nil {
return nil, err
}
change := total - amount - txFee
// create base raw tx
addresses := make(map[btcutil.Address]btcutil.Amount)
//changeAddr, err := client.GetNewAddress("")
changeAmount, err := btcutil.NewAmount(change)
if err != nil {
return nil, err
}
addresses[changeAddress] = changeAmount
lockTime := int64(0)
return client.CreateRawTransaction(inputs, addresses, &lockTime)
}
func coinChooser(client *lbrycrd.Client, amount float64) ([]btcjson.TransactionInput, float64, error) {
utxos, err := client.ListUnspentMin(1)
if err != nil {
return nil, 0, err
}
sort.Slice(utxos, func(i, j int) bool { return utxos[i].Amount < utxos[j].Amount })
var utxo btcjson.ListUnspentResult
for _, u := range utxos {
if u.Spendable && u.Amount >= amount {
utxo = u
break
}
}
if utxo.TxID == "" {
return nil, 0, errors.Err("not enough utxos to create tx")
}
return []btcjson.TransactionInput{{Txid: utxo.TxID, Vout: utxo.Vout}}, utxo.Amount, nil
}
func addClaimToTx(tx *wire.MsgTx, claim *pb.Claim, name string, amount float64, claimAddress btcutil.Address) error {
claimBytes, err := proto.Marshal(claim)
if err != nil {
return err
}
claimBytes = append([]byte{0}, claimBytes...) // version 0 = no channel sig
amt, err := btcutil.NewAmount(amount)
if err != nil {
return err
}
script, err := getClaimPayoutScript(name, claimBytes, claimAddress)
if err != nil {
return err
}
tx.AddTxOut(wire.NewTxOut(int64(amt), script))
return nil
}
func Decode(client *lbrycrd.Client, tx *wire.MsgTx) (string, error) {
buf := bytes.NewBuffer(make([]byte, 0, tx.SerializeSize()))
if err := tx.Serialize(buf); err != nil {
return "", errors.Err(err)
}
//txHex := hex.EncodeToString(buf.Bytes())
//spew.Dump(txHex)
decoded, err := client.DecodeRawTransaction(buf.Bytes())
if err != nil {
return "", err
}
data, err := json.MarshalIndent(decoded, "", " ")
return string(data), err
}
func reflect(st stream.Stream, reflectorAddress string) error {
// upload blobs to reflector
c := reflector.Client{}
err := c.Connect(reflectorAddress)
if err != nil {
return errors.Err(err)
}
for i, b := range st {
if i == 0 {
err = c.SendSDBlob(b)
} else {
err = c.SendBlob(b)
}
if err != nil {
return errors.Err(err)
}
}
return nil
}
func makeStream(path string) (stream.Stream, *pb.Stream, error) {
file, err := os.Open(path)
if err != nil {
return nil, nil, errors.Err(err)
}
defer func() { _ = file.Close() }()
enc := stream.NewEncoder(file)
s, err := enc.Stream()
if err != nil {
return nil, nil, errors.Err(err)
}
streamProto := &pb.Stream{
Source: &pb.Source{
SdHash: enc.SDBlob().Hash(),
Name: filepath.Base(file.Name()),
Size: uint64(enc.SourceLen()),
Hash: enc.SourceHash(),
},
}
mimeType, category := guessMimeType(filepath.Ext(file.Name()))
streamProto.Source.MediaType = mimeType
switch category {
case "video":
//t, err := streamVideoMetadata(path)
//if err != nil {
// return nil, nil, err
//}
streamProto.Type = &pb.Stream_Video{}
case "audio":
streamProto.Type = &pb.Stream_Audio{}
case "image":
streamProto.Type = &pb.Stream_Image{}
}
return s, streamProto, nil
}
func getClaimPayoutScript(name string, value []byte, address btcutil.Address) ([]byte, error) {
//OP_CLAIM_NAME <name> <value> OP_2DROP OP_DROP OP_DUP OP_HASH160 <address> OP_EQUALVERIFY OP_CHECKSIG
pkscript, err := txscript.PayToAddrScript(address)
if err != nil {
return nil, errors.Err(err)
}
return txscript.NewScriptBuilder().
AddOp(txscript.OP_NOP6). //OP_CLAIM_NAME
AddData([]byte(name)). //<name>
AddData(value). //<value>
AddOp(txscript.OP_2DROP). //OP_2DROP
AddOp(txscript.OP_DROP). //OP_DROP
AddOps(pkscript). //OP_DUP OP_HASH160 <address> OP_EQUALVERIFY OP_CHECKSIG
Script()
}
//func streamVideoMetadata(path string) (*pb.Stream_Video, error) {
// mi, err := mediainfo.GetMediaInfo(path)
// if err != nil {
// return nil, err
// }
// return &pb.Stream_Video{
// Video: &pb.Video{
// Duration: uint32(mi.General.Duration / 1000),
// Height: uint32(mi.Video.Height),
// Width: uint32(mi.Video.Width),
// },
// }, nil
//}

View file

@ -1,59 +0,0 @@
package publish
import (
"encoding/json"
"io"
)
func LoadWallet(r io.Reader) (WalletFile, error) {
var w WalletFile
err := json.NewDecoder(r).Decode(&w)
return w, err
}
type WalletFile struct {
Name string `json:"name"`
Version int `json:"version"`
Preferences WalletPrefs `json:"preferences"`
Accounts []Account `json:"accounts"`
}
type Account struct {
AddressGenerator AddressGenerator `json:"address_generator"`
Certificates map[string]string `json:"certificates"`
Encrypted bool `json:"encrypted"`
Ledger string `json:"ledger"`
ModifiedOn float64 `json:"modified_on"`
Name string `json:"name"`
PrivateKey string `json:"private_key"`
PublicKey string `json:"public_key"`
Seed string `json:"seed"`
}
type AddressGenerator struct {
Name string `json:"name"`
Change AddressGenParams `json:"change"` // should "change" and "receiving" be replaced with a map[string]AddressGenParams?
Receiving AddressGenParams `json:"receiving"`
}
type AddressGenParams struct {
Gap int `json:"gap"`
MaximumUsesPerAddress int `json:"maximum_uses_per_address"`
}
type WalletPrefs struct {
Shared struct {
Ts float64 `json:"ts"`
Value struct {
Type string `json:"type"`
Value struct {
AppWelcomeVersion int `json:"app_welcome_version"`
Blocked []interface{} `json:"blocked"`
Sharing3P bool `json:"sharing_3P"`
Subscriptions []string `json:"subscriptions"`
Tags []string `json:"tags"`
} `json:"value"`
Version string `json:"version"`
} `json:"value"`
} `json:"shared"`
}

108
readme.md
View file

@ -1,110 +1,25 @@
# Reflector
Reflector is a central piece of software that providers LBRY with the following features:
- Blobs reflection: when something is published, we capture the data and store it on our servers for quicker retrieval
- Blobs distribution: when a piece of content is requested and the LBRY network doesn't have it, reflector will retrieve it from its storage and distribute it
- Blobs caching: reflectors can be chained together in multiple regions or servers to form a chain of cached content. We call those "blobcaches". They are layered so that content distribution is favorable in all the regions we deploy it to
There are a few other features embedded in reflector.go including publishing streams from Go, downloading or upload blobs, resolving content and more unfinished tools.
This code includes a Go implementations of the LBRY peer protocol, reflector protocol, and DHT.
A reflector cluster to accept LBRY content for hosting en masse, rehost the content, and make money on data fees (TODO).
This code includes Go implementations of the LBRY peer protocol, reflector protocol, and DHT.
## Installation
- Install mysql 8 (5.7 might work too)
- add a reflector user and database with password `reflector` with localhost access only
- Create the tables as described [here](https://github.com/lbryio/reflector.go/blob/master/db/db.go#L735) (the link might not update as the code does so just look for the schema in that file)
#### We do not support running reflector.go as a blob receiver, however if you want to run it as a private blobcache you may compile it yourself and run it as following:
```bash
./prism-bin reflector \
--conf="none" \
--disable-uploads=true \
--use-db=false \
--upstream-reflector="reflector.lbry.com" \
--upstream-protocol="http" \
--request-queue-size=200 \
--disk-cache="2GB:/path/to/your/storage/:localdb" \
```
Create a systemd script if you want to run it automatically on startup or as a service.
coming soon
## Usage
Usage as reflector/blobcache:
```bash
Run reflector server
coming soon
Usage:
prism reflector [flags]
Flags:
--disable-blocklist Disable blocklist watching/updating
--disable-uploads Disable uploads to this reflector server
--disk-cache string Where to cache blobs on the file system. format is 'sizeGB:CACHE_PATH:cachemanager' (cachemanagers: localdb/lfuda/lru) (default "100GB:/tmp/downloaded_blobs:localdb")
-h, --help help for reflector
--http-peer-port int The port reflector will distribute content from over HTTP protocol (default 5569)
--http3-peer-port int The port reflector will distribute content from over HTTP3 protocol (default 5568)
--mem-cache int enable in-memory cache with a max size of this many blobs
--metrics-port int The port reflector will use for prometheus metrics (default 2112)
--optional-disk-cache string Optional secondary file system cache for blobs. format is 'sizeGB:CACHE_PATH:cachemanager' (cachemanagers: localdb/lfuda/lru) (this would get hit before the one specified in disk-cache)
--origin-endpoint string HTTP edge endpoint for standard HTTP retrieval
--origin-endpoint-fallback string HTTP edge endpoint for standard HTTP retrieval if first origin fails
--receiver-port int The port reflector will receive content from (default 5566)
--request-queue-size int How many concurrent requests from downstream should be handled at once (the rest will wait) (default 200)
--tcp-peer-port int The port reflector will distribute content from for the TCP (LBRY) protocol (default 5567)
--upstream-protocol string protocol used to fetch blobs from another upstream reflector server (tcp/http3/http) (default "http")
--upstream-reflector string host:port of a reflector server where blobs are fetched from
--use-db Whether to connect to the reflector db or not (default true)
Global Flags:
--conf string Path to config. Use 'none' to disable (default "config.json")
-v, --verbose strings Verbose logging for specific components
```
Other uses:
```bash
Prism is a single entry point application with multiple sub modules which can be leveraged individually or together
Usage:
prism [command]
Available Commands:
check-integrity check blobs integrity for a given path
cluster Start(join) to or Start a new cluster
decode Decode a claim value
dht Run dht node
getstream Get a stream from a reflector server
help Help about any command
peer Run peer server
populate-db populate local database with blobs from a disk storage
publish Publish a file
reflector Run reflector server
resolve Resolve a URL
send Send a file to a reflector
sendblob Send a random blob to a reflector server
start Runs full prism application with cluster, dht, peer server, and reflector server.
test Test things
upload Upload blobs to S3
version Print the version
Flags:
--conf string Path to config. Use 'none' to disable (default "config.json")
-h, --help help for prism
-v, --verbose strings Verbose logging for specific components
```
## Running from Source
This project requires [Go v1.20](https://golang.org/doc/install).
On Ubuntu you can install it with `sudo snap install go --classic`
This project requires [Go v1.10](https://golang.org/doc/install) or higher.
```
git clone git@github.com:lbryio/reflector.go.git
cd reflector.go
go get -u github.com/lbryio/reflector.go
cd "$(go env GOPATH)/src/github.com/lbryio/reflector.go"
make
./dist/linux_amd64/prism-bin
./prism
```
## Contributing
@ -117,8 +32,9 @@ This project is MIT licensed.
## Security
We take security seriously. Please contact security@lbry.com regarding any security issues.
Our PGP key is [here](https://lbry.com/faq/pgp-key) if you need it.
We take security seriously. Please contact security@lbry.io regarding any security issues.
Our PGP key is [here](https://keybase.io/lbry/key.asc) if you need it.
## Contact
The primary contact for this project is [@Nikooo777](https://github.com/Nikooo777) (niko-at-lbry.com)
The primary contact for this project is [@lyoshenka](https://github.com/lyoshenka) (grin@lbry.io)

View file

@ -1,159 +0,0 @@
package reflector
import (
"encoding/hex"
"encoding/json"
"net/http"
"strconv"
"strings"
"time"
"github.com/lbryio/reflector.go/internal/metrics"
"github.com/lbryio/reflector.go/store"
"github.com/lbryio/reflector.go/wallet"
"github.com/lbryio/lbry.go/v2/extras/errors"
"github.com/lbryio/lbry.go/v2/extras/stop"
log "github.com/sirupsen/logrus"
)
const blocklistURL = "https://api.lbry.com/file/list_blocked"
func (s *Server) enableBlocklist(b store.Blocklister) {
walletServers := []string{
"spv25.lbry.com:50001",
"spv26.lbry.com:50001",
"spv19.lbry.com:50001",
"spv14.lbry.com:50001",
}
updateBlocklist(b, walletServers, s.grp.Ch())
t := time.NewTicker(12 * time.Hour)
for {
select {
case <-s.grp.Ch():
return
case <-t.C:
updateBlocklist(b, walletServers, s.grp.Ch())
}
}
}
func updateBlocklist(b store.Blocklister, walletServers []string, stopper stop.Chan) {
log.Debugf("blocklist update starting")
values, err := blockedSdHashes(walletServers, stopper)
if err != nil {
log.Error(err)
return
}
for name, v := range values {
if v.Err != nil {
log.Error(errors.FullTrace(errors.Err("blocklist: %s: %s", name, v.Err)))
continue
}
err = b.Block(v.Value)
if err != nil {
log.Error(err)
}
}
log.Debugf("blocklist update done")
}
func blockedSdHashes(walletServers []string, stopper stop.Chan) (map[string]valOrErr, error) {
client := http.Client{Timeout: 1 * time.Second}
resp, err := client.Get(blocklistURL)
if err != nil {
return nil, errors.Err(err)
}
defer func() {
err := resp.Body.Close()
if err != nil {
log.Errorln(errors.Err(err))
}
}()
var r struct {
Success bool `json:"success"`
Error string `json:"error"`
Data struct {
Outpoints []string `json:"outpoints"`
} `json:"data"`
}
if err = json.NewDecoder(resp.Body).Decode(&r); err != nil {
return nil, errors.Err(err)
}
if !r.Success {
return nil, errors.Prefix("list_blocked API call", r.Error)
}
return sdHashesForOutpoints(walletServers, r.Data.Outpoints, stopper)
}
type valOrErr struct {
Value string
Err error
}
// sdHashesForOutpoints queries wallet server for the sd hashes in a given outpoints
func sdHashesForOutpoints(walletServers, outpoints []string, stopper stop.Chan) (map[string]valOrErr, error) {
values := make(map[string]valOrErr)
node := wallet.NewNode()
err := node.Connect(walletServers, nil)
if err != nil {
return nil, errors.Err(err)
}
done := make(chan bool)
metrics.RoutinesQueue.WithLabelValues("reflector", "sdhashesforoutput").Inc()
go func() {
defer metrics.RoutinesQueue.WithLabelValues("reflector", "sdhashesforoutput").Dec()
select {
case <-done:
case <-stopper:
}
node.Shutdown()
}()
OutpointLoop:
for _, outpoint := range outpoints {
select {
case <-stopper:
break OutpointLoop
default:
}
parts := strings.Split(outpoint, ":")
if len(parts) != 2 {
values[outpoint] = valOrErr{Err: errors.Err("invalid outpoint format")}
continue
}
nout, err := strconv.Atoi(parts[1])
if err != nil {
values[outpoint] = valOrErr{Err: errors.Prefix("invalid nout", err)}
continue
}
claim, err := node.GetClaimInTx(parts[0], nout)
if err != nil {
values[outpoint] = valOrErr{Err: err}
continue
}
hash := hex.EncodeToString(claim.GetStream().GetSource().GetSdHash())
values[outpoint] = valOrErr{Value: hash, Err: nil}
}
select {
case done <- true:
default: // in case of race where stopper got stopped right after loop finished
}
return values, nil
}

View file

@ -2,11 +2,11 @@ package reflector
import (
"encoding/json"
"log"
"net"
"strconv"
"github.com/lbryio/lbry.go/v2/extras/errors"
"github.com/lbryio/lbry.go/v2/stream"
"github.com/lbryio/lbry.go/errors"
log "github.com/sirupsen/logrus"
)
// ErrBlobExists is a default error for when a blob already exists on the reflector server.
@ -35,36 +35,23 @@ func (c *Client) Close() error {
return c.conn.Close()
}
// SendBlob sends a blob to the server.
func (c *Client) SendBlob(blob stream.Blob) error {
return c.sendBlob(blob, false)
}
// SendSDBlob sends an SD blob request to the server.
func (c *Client) SendSDBlob(blob stream.Blob) error {
return c.sendBlob(blob, true)
}
// sendBlob does the actual blob sending
func (c *Client) sendBlob(blob stream.Blob, isSDBlob bool) error {
// SendBlob sends a send blob request to the client.
func (c *Client) SendBlob(blob []byte) error {
if !c.connected {
return errors.Err("not connected")
}
if err := blob.ValidForSend(); err != nil {
return errors.Err(err)
if len(blob) > maxBlobSize {
return errors.Err("blob must be at most " + strconv.Itoa(maxBlobSize) + " bytes")
} else if len(blob) == 0 {
return errors.Err("blob is empty")
}
blobHash := blob.HashHex()
var req sendBlobRequest
if isSDBlob {
req.SdBlobSize = blob.Size()
req.SdBlobHash = blobHash
} else {
req.BlobSize = blob.Size()
req.BlobHash = blobHash
}
sendRequest, err := json.Marshal(req)
blobHash := getBlobHash(blob)
sendRequest, err := json.Marshal(sendBlobRequest{
BlobSize: len(blob),
BlobHash: blobHash,
})
if err != nil {
return err
}
@ -76,51 +63,30 @@ func (c *Client) sendBlob(blob stream.Blob, isSDBlob bool) error {
dec := json.NewDecoder(c.conn)
if isSDBlob {
var sendResp sendSdBlobResponse
err = dec.Decode(&sendResp)
if err != nil {
return err
}
if !sendResp.SendSdBlob {
return errors.Prefix(blobHash[:8], ErrBlobExists)
}
log.Println("Sending SD blob " + blobHash[:8])
} else {
var sendResp sendBlobResponse
err = dec.Decode(&sendResp)
if err != nil {
return err
}
if !sendResp.SendBlob {
return errors.Prefix(blobHash[:8], ErrBlobExists)
}
log.Println("Sending blob " + blobHash[:8])
var sendResp sendBlobResponse
err = dec.Decode(&sendResp)
if err != nil {
return err
}
if !sendResp.SendBlob {
return ErrBlobExists
}
log.Println("Sending blob " + blobHash[:8])
_, err = c.conn.Write(blob)
if err != nil {
return err
}
var transferResp blobTransferResponse
err = dec.Decode(&transferResp)
if err != nil {
return err
}
if isSDBlob {
var transferResp sdBlobTransferResponse
err = dec.Decode(&transferResp)
if err != nil {
return err
}
if !transferResp.ReceivedSdBlob {
return errors.Err("server did not received SD blob")
}
} else {
var transferResp blobTransferResponse
err = dec.Decode(&transferResp)
if err != nil {
return err
}
if !transferResp.ReceivedBlob {
return errors.Err("server did not received blob")
}
if !transferResp.ReceivedBlob {
return errors.Err("server did not received blob")
}
return nil
@ -131,7 +97,7 @@ func (c *Client) doHandshake(version int) error {
return errors.Err("not connected")
}
handshake, err := json.Marshal(handshakeRequestResponse{Version: &version})
handshake, err := json.Marshal(handshakeRequestResponse{Version: version})
if err != nil {
return err
}
@ -145,9 +111,7 @@ func (c *Client) doHandshake(version int) error {
err = json.NewDecoder(c.conn).Decode(&resp)
if err != nil {
return err
} else if resp.Version == nil {
return errors.Err("invalid handshake")
} else if *resp.Version != version {
} else if resp.Version != version {
return errors.Err("handshake version mismatch")
}

View file

@ -1,81 +0,0 @@
package reflector
import (
"encoding/json"
"net/http"
"time"
"github.com/bluele/gcache"
"github.com/lbryio/lbry.go/v2/extras/errors"
"golang.org/x/sync/singleflight"
)
const protectedListURL = "https://api.odysee.com/file/list_protected"
type ProtectedContent struct {
SDHash string `json:"sd_hash"`
ClaimID string `json:"claim_id"`
}
var protectedCache = gcache.New(10).Expiration(2 * time.Minute).Build()
func GetProtectedContent() (interface{}, error) {
cachedVal, err := protectedCache.Get("protected")
if err == nil && cachedVal != nil {
return cachedVal.(map[string]bool), nil
}
method := "GET"
var r struct {
Success bool `json:"success"`
Error string `json:"error"`
Data []ProtectedContent `json:"data"`
}
client := &http.Client{}
req, err := http.NewRequest(method, protectedListURL, nil)
if err != nil {
return nil, errors.Err(err)
}
res, err := client.Do(req)
if err != nil {
return nil, errors.Err(err)
}
defer func() { _ = res.Body.Close() }()
if res.StatusCode != http.StatusOK {
return nil, errors.Err("unexpected status code %d", res.StatusCode)
}
if err = json.NewDecoder(res.Body).Decode(&r); err != nil {
return nil, errors.Err(err)
}
if !r.Success {
return nil, errors.Prefix("file/list_protected API call", r.Error)
}
protectedMap := make(map[string]bool, len(r.Data))
for _, pc := range r.Data {
protectedMap[pc.SDHash] = true
}
err = protectedCache.Set("protected", protectedMap)
if err != nil {
return protectedMap, errors.Err(err)
}
return protectedMap, nil
}
var sf = singleflight.Group{}
func IsProtected(sdHash string) bool {
val, err, _ := sf.Do("protected", GetProtectedContent)
if err != nil {
return false
}
cachedMap, ok := val.(map[string]bool)
if !ok {
return false
}
return cachedMap[sdHash]
}

View file

@ -7,14 +7,13 @@ import (
"encoding/json"
"io"
"net"
"strconv"
"time"
"github.com/lbryio/reflector.go/internal/metrics"
"github.com/lbryio/reflector.go/store"
"github.com/lbryio/lbry.go/v2/extras/errors"
"github.com/lbryio/lbry.go/v2/extras/stop"
"github.com/lbryio/lbry.go/v2/stream"
"github.com/lbryio/lbry.go/errors"
"github.com/lbryio/lbry.go/stop"
log "github.com/sirupsen/logrus"
)
@ -28,29 +27,22 @@ const (
network = "tcp4"
protocolVersion1 = 0
protocolVersion2 = 1
maxBlobSize = stream.MaxBlobSize
maxBlobSize = 2 * 1024 * 1024
)
var ErrBlobTooBig = errors.Base("blob must be at most %d bytes", maxBlobSize)
// Server is and instance of the reflector server. It houses the blob store and listener.
type Server struct {
Timeout time.Duration // timeout to read or write next message
EnableBlocklist bool // if true, blocklist checking and blob deletion will be enabled
underlyingStore store.BlobStore
outerStore store.BlobStore
grp *stop.Group
store store.BlobStore
timeout time.Duration // timeout to read or write next message
grp *stop.Group
}
// NewServer returns an initialized reflector server pointer.
func NewServer(underlying store.BlobStore, outer store.BlobStore) *Server {
func NewServer(store store.BlobStore) *Server {
return &Server{
Timeout: DefaultTimeout,
underlyingStore: underlying,
outerStore: outer,
grp: stop.New(),
store: store,
grp: stop.New(),
timeout: DefaultTimeout,
}
}
@ -61,17 +53,16 @@ func (s *Server) Shutdown() {
log.Println("reflector server stopped")
}
// Start starts the server to handle connections.
//Start starts the server to handle connections.
func (s *Server) Start(address string) error {
l, err := net.Listen(network, address)
if err != nil {
return errors.Err(err)
}
log.Println("reflector listening on " + address)
s.grp.Add(1)
metrics.RoutinesQueue.WithLabelValues("reflector", "listener").Inc()
go func() {
defer metrics.RoutinesQueue.WithLabelValues("reflector", "listener").Dec()
<-s.grp.Ch()
err := l.Close()
if err != nil {
@ -81,28 +72,11 @@ func (s *Server) Start(address string) error {
}()
s.grp.Add(1)
metrics.RoutinesQueue.WithLabelValues("reflector", "start").Inc()
go func() {
defer metrics.RoutinesQueue.WithLabelValues("reflector", "start").Dec()
s.listenAndServe(l)
s.grp.Done()
}()
if s.EnableBlocklist {
if b, ok := s.underlyingStore.(store.Blocklister); ok {
s.grp.Add(1)
metrics.RoutinesQueue.WithLabelValues("reflector", "enableblocklist").Inc()
go func() {
defer metrics.RoutinesQueue.WithLabelValues("reflector", "enableblocklist").Dec()
s.enableBlocklist(b)
s.grp.Done()
}()
} else {
//s.Shutdown()
return errors.Err("blocklist is enabled but blob store does not support blocklisting")
}
}
return nil
}
@ -116,9 +90,7 @@ func (s *Server) listenAndServe(listener net.Listener) {
log.Error(err)
} else {
s.grp.Add(1)
metrics.RoutinesQueue.WithLabelValues("reflector", "server-listenandserve").Inc()
go func() {
defer metrics.RoutinesQueue.WithLabelValues("reflector", "server-listenandserve").Dec()
s.handleConn(conn)
s.grp.Done()
}()
@ -133,9 +105,7 @@ func (s *Server) handleConn(conn net.Conn) {
close(connNeedsClosing)
}()
s.grp.Add(1)
metrics.RoutinesQueue.WithLabelValues("reflector", "server-handleconn").Inc()
go func() {
defer metrics.RoutinesQueue.WithLabelValues("reflector", "server-handleconn").Dec()
defer s.grp.Done()
select {
case <-connNeedsClosing:
@ -149,7 +119,7 @@ func (s *Server) handleConn(conn net.Conn) {
err := s.doHandshake(conn)
if err != nil {
if errors.Is(err, io.EOF) || s.quitting() {
if err == io.EOF || s.quitting() {
return
}
err := s.doError(conn, err)
@ -162,7 +132,7 @@ func (s *Server) handleConn(conn net.Conn) {
for {
err = s.receiveBlob(conn)
if err != nil {
if errors.Is(err, io.EOF) || s.quitting() {
if err == io.EOF || s.quitting() {
return
}
err := s.doError(conn, err)
@ -175,83 +145,57 @@ func (s *Server) handleConn(conn net.Conn) {
}
func (s *Server) doError(conn net.Conn, err error) error {
if err == nil {
return nil
}
shouldLog := metrics.TrackError(metrics.DirectionUpload, err)
if shouldLog {
log.Errorln(errors.FullTrace(err))
}
log.Errorln(errors.FullTrace(err))
if e2, ok := err.(*json.SyntaxError); ok {
log.Errorf("syntax error at byte offset %d", e2.Offset)
}
//resp, err := json.Marshal(errorResponse{Error: err.Error()})
//if err != nil {
// return err
//}
//return s.write(conn, resp)
return nil
resp, err := json.Marshal(errorResponse{Error: err.Error()})
if err != nil {
return err
}
return s.write(conn, resp)
}
func (s *Server) receiveBlob(conn net.Conn) error {
var err error
blobSize, blobHash, isSdBlob, err := s.readBlobRequest(conn)
if err != nil {
return err
}
var wantsBlob bool
if bl, ok := s.underlyingStore.(store.Blocklister); ok {
wantsBlob, err = bl.Wants(blobHash)
if err != nil {
return err
}
// fullStreamChecker can check if the full stream has been uploaded
type fullStreamChecker interface {
HasFullStream(string) (bool, error)
}
blobExists := false
if fsc, ok := s.store.(fullStreamChecker); ok && isSdBlob {
blobExists, err = fsc.HasFullStream(blobHash)
} else {
blobExists, err := s.underlyingStore.Has(blobHash)
if err != nil {
return err
}
wantsBlob = !blobExists
// if we can't confirm that we have the full stream, we have to say that the sd blob is missing. if we say we have it, they wont try to send any content blobs
blobExists, err = s.store.Has(blobHash)
}
var neededBlobs []string
if isSdBlob && !wantsBlob {
if nbc, ok := s.underlyingStore.(neededBlobChecker); ok {
neededBlobs, err = nbc.MissingBlobsForKnownStream(blobHash)
if err != nil {
return err
}
} else {
// if we can't check for blobs in a stream, we have to say that the sd blob is
// missing. if we say we have the sd blob, they wont try to send any content blobs
wantsBlob = true
}
}
err = s.sendBlobResponse(conn, wantsBlob, isSdBlob, neededBlobs)
if err != nil {
return err
}
if !wantsBlob {
err = s.sendBlobResponse(conn, blobExists, isSdBlob)
if err != nil {
return err
}
if blobExists {
return nil
}
blob, err := s.readRawBlob(conn, blobSize)
if err != nil {
sendErr := s.sendTransferResponse(conn, false, isSdBlob)
if sendErr != nil {
return sendErr
}
return errors.Prefix("error reading blob "+blobHash[:8], err)
return err
}
receivedBlobHash := BlobHash(blob)
receivedBlobHash := getBlobHash(blob)
if blobHash != receivedBlobHash {
sendErr := s.sendTransferResponse(conn, false, isSdBlob)
if sendErr != nil {
return sendErr
}
return errors.Err("hash of received blob data does not match hash from send request")
// this can also happen if the blob size is wrong, because the server will read the wrong number of bytes from the stream
}
@ -259,18 +203,14 @@ func (s *Server) receiveBlob(conn net.Conn) error {
log.Debugln("Got blob " + blobHash[:8])
if isSdBlob {
err = s.outerStore.PutSD(blobHash, blob)
err = s.store.PutSD(blobHash, blob)
} else {
err = s.outerStore.Put(blobHash, blob)
err = s.store.Put(blobHash, blob)
}
if err != nil {
return err
}
metrics.MtrInBytesReflector.Add(float64(len(blob)))
metrics.BlobUploadCount.Inc()
if isSdBlob {
metrics.SDBlobUploadCount.Inc()
}
return s.sendTransferResponse(conn, true, isSdBlob)
}
@ -279,9 +219,7 @@ func (s *Server) doHandshake(conn net.Conn) error {
err := s.read(conn, &handshake)
if err != nil {
return err
} else if handshake.Version == nil {
return errors.Err("handshake is missing protocol version")
} else if *handshake.Version != protocolVersion1 && *handshake.Version != protocolVersion2 {
} else if handshake.Version != protocolVersion1 && handshake.Version != protocolVersion2 {
return errors.Err("protocol version not supported")
}
@ -316,7 +254,7 @@ func (s *Server) readBlobRequest(conn net.Conn) (int, string, bool, error) {
return blobSize, blobHash, isSdBlob, errors.Err("blob hash is empty")
}
if blobSize > maxBlobSize {
return blobSize, blobHash, isSdBlob, errors.Err(ErrBlobTooBig)
return blobSize, blobHash, isSdBlob, errors.Err("blob must be at most " + strconv.Itoa(maxBlobSize) + " bytes")
}
if blobSize == 0 {
return blobSize, blobHash, isSdBlob, errors.Err("0-byte blob received")
@ -325,14 +263,14 @@ func (s *Server) readBlobRequest(conn net.Conn) (int, string, bool, error) {
return blobSize, blobHash, isSdBlob, nil
}
func (s *Server) sendBlobResponse(conn net.Conn, shouldSendBlob, isSdBlob bool, neededBlobs []string) error {
func (s *Server) sendBlobResponse(conn net.Conn, blobExists, isSdBlob bool) error {
var response []byte
var err error
if isSdBlob {
response, err = json.Marshal(sendSdBlobResponse{SendSdBlob: shouldSendBlob, NeededBlobs: neededBlobs})
response, err = json.Marshal(sendSdBlobResponse{SendSdBlob: !blobExists})
} else {
response, err = json.Marshal(sendBlobResponse{SendBlob: shouldSendBlob})
response, err = json.Marshal(sendBlobResponse{SendBlob: !blobExists})
}
if err != nil {
return err
@ -358,25 +296,16 @@ func (s *Server) sendTransferResponse(conn net.Conn, receivedBlob, isSdBlob bool
}
func (s *Server) read(conn net.Conn, v interface{}) error {
err := conn.SetReadDeadline(time.Now().Add(s.Timeout))
err := conn.SetReadDeadline(time.Now().Add(s.timeout))
if err != nil {
return errors.Err(err)
}
dec := json.NewDecoder(conn)
err = dec.Decode(v)
if err != nil {
data, _ := io.ReadAll(dec.Buffered())
if len(data) > 0 {
return errors.Err("%s. Data: %s", err.Error(), hex.EncodeToString(data))
}
return errors.Err(err)
}
return nil
return errors.Err(json.NewDecoder(conn).Decode(v))
}
func (s *Server) readRawBlob(conn net.Conn, blobSize int) ([]byte, error) {
err := conn.SetReadDeadline(time.Now().Add(s.Timeout))
err := conn.SetReadDeadline(time.Now().Add(s.timeout))
if err != nil {
return nil, errors.Err(err)
}
@ -387,7 +316,7 @@ func (s *Server) readRawBlob(conn net.Conn, blobSize int) ([]byte, error) {
}
func (s *Server) write(conn net.Conn, b []byte) error {
err := conn.SetWriteDeadline(time.Now().Add(s.Timeout))
err := conn.SetWriteDeadline(time.Now().Add(s.timeout))
if err != nil {
return errors.Err(err)
}
@ -408,23 +337,17 @@ func (s *Server) quitting() bool {
}
}
// BlobHash returns the sha512 hash hex encoded string of the blob byte slice.
func BlobHash(blob []byte) string {
func getBlobHash(blob []byte) string {
hashBytes := sha512.Sum384(blob)
return hex.EncodeToString(hashBytes[:])
}
func IsValidJSON(b []byte) bool {
var r json.RawMessage
return json.Unmarshal(b, &r) == nil
type errorResponse struct {
Error string `json:"error"`
}
//type errorResponse struct {
// Error string `json:"error"`
//}
type handshakeRequestResponse struct {
Version *int `json:"version"`
Version int `json:"version"`
}
type sendBlobRequest struct {
@ -450,8 +373,3 @@ type blobTransferResponse struct {
type sdBlobTransferResponse struct {
ReceivedSdBlob bool `json:"received_sd_blob"`
}
// neededBlobChecker can check which blobs from a known stream are not uploaded yet
type neededBlobChecker interface {
MissingBlobsForKnownStream(string) ([]string, error)
}

View file

@ -2,18 +2,14 @@ package reflector
import (
"crypto/rand"
"encoding/json"
"io"
"sort"
"strconv"
"testing"
"time"
"github.com/davecgh/go-spew/spew"
"github.com/lbryio/reflector.go/store"
"github.com/lbryio/lbry.go/v2/dht/bits"
"github.com/davecgh/go-spew/spew"
"github.com/phayes/freeport"
)
@ -23,7 +19,7 @@ func startServerOnRandomPort(t *testing.T) (*Server, int) {
t.Fatal(err)
}
srv := NewServer(store.NewMemStore(), store.NewMemStore())
srv := NewServer(&store.MemoryBlobStore{})
err = srv.Start("127.0.0.1:" + strconv.Itoa(port))
if err != nil {
t.Fatal(err)
@ -66,7 +62,11 @@ func TestServer_MediumBlob(t *testing.T) {
t.Fatal("error connecting client to server", err)
}
blob := randBlob(1000)
blob := make([]byte, 1000)
_, err = rand.Read(blob)
if err != nil {
t.Fatal("failed to make random blob")
}
err = c.SendBlob(blob)
if err != nil {
@ -84,7 +84,11 @@ func TestServer_FullBlob(t *testing.T) {
t.Fatal("error connecting client to server", err)
}
blob := randBlob(maxBlobSize)
blob := make([]byte, maxBlobSize)
_, err = rand.Read(blob)
if err != nil {
t.Fatal("failed to make random blob")
}
err = c.SendBlob(blob)
if err != nil {
@ -102,7 +106,11 @@ func TestServer_TooBigBlob(t *testing.T) {
t.Fatal("error connecting client to server", err)
}
blob := randBlob(maxBlobSize + 1)
blob := make([]byte, maxBlobSize+1)
_, err = rand.Read(blob)
if err != nil {
t.Fatal("failed to make random blob")
}
err = c.SendBlob(blob)
if err == nil {
@ -120,8 +128,8 @@ func TestServer_Timeout(t *testing.T) {
t.Fatal(err)
}
srv := NewServer(store.NewMemStore(), store.NewMemStore())
srv.Timeout = testTimeout
srv := NewServer(&store.MemoryBlobStore{})
srv.timeout = testTimeout
err = srv.Start("127.0.0.1:" + strconv.Itoa(port))
if err != nil {
t.Fatal(err)
@ -136,7 +144,11 @@ func TestServer_Timeout(t *testing.T) {
time.Sleep(testTimeout * 2)
blob := randBlob(10)
blob := make([]byte, 10)
_, err = rand.Read(blob)
if err != nil {
t.Fatal("failed to make random blob")
}
err = c.SendBlob(blob)
t.Log(spew.Sdump(err))
@ -144,111 +156,3 @@ func TestServer_Timeout(t *testing.T) {
t.Error("server should have timed out by now")
}
}
//func TestServer_InvalidJSONHandshake(t *testing.T) {
// srv, port := startServerOnRandomPort(t)
// defer srv.Shutdown()
//
// c := Client{}
// err := c.Connect(":" + strconv.Itoa(port))
// if err != nil {
// t.Fatal("error connecting client to server", err)
// }
//
// _, err = c.conn.Write([]byte(`{"stuff":4,tf}"`))
// if err == nil {
// t.Error("expected an error")
// }
//}
type mockPartialStore struct {
*store.MemStore
missing []string
}
func (m mockPartialStore) MissingBlobsForKnownStream(hash string) ([]string, error) {
return m.missing, nil
}
func TestServer_PartialUpload(t *testing.T) {
port, err := freeport.GetFreePort()
if err != nil {
t.Fatal(err)
}
sdHash := bits.Rand().String()
missing := make([]string, 4)
for i := range missing {
missing[i] = bits.Rand().String()
}
st := store.BlobStore(&mockPartialStore{MemStore: store.NewMemStore(), missing: missing})
if _, ok := st.(neededBlobChecker); !ok {
t.Fatal("mock does not implement the relevant interface")
}
err = st.Put(sdHash, randBlob(10))
if err != nil {
t.Fatal(err)
}
srv := NewServer(st, st)
err = srv.Start("127.0.0.1:" + strconv.Itoa(port))
if err != nil {
t.Fatal(err)
}
defer srv.Shutdown()
c := Client{}
err = c.Connect(":" + strconv.Itoa(port))
if err != nil {
t.Fatal("error connecting client to server", err)
}
sendRequest, err := json.Marshal(sendBlobRequest{
SdBlobHash: sdHash,
SdBlobSize: len(sdHash),
})
if err != nil {
t.Fatal(err)
}
_, err = c.conn.Write(sendRequest)
if err != nil {
t.Fatal(err)
}
var sendResp sendSdBlobResponse
err = json.NewDecoder(c.conn).Decode(&sendResp)
if err != nil {
t.Fatal(err)
}
if sendResp.SendSdBlob {
t.Errorf("expected SendSdBlob = false, got true")
}
if len(sendResp.NeededBlobs) != len(missing) {
t.Fatalf("got %d needed blobs, expected %d", len(sendResp.NeededBlobs), len(missing))
}
sort.Strings(sendResp.NeededBlobs)
sort.Strings(missing)
for i := range missing {
if missing[i] != sendResp.NeededBlobs[i] {
t.Errorf("needed blobs mismatch: %s != %s", missing[i], sendResp.NeededBlobs[i])
}
}
}
func randBlob(size int) []byte {
//if size > maxBlobSize {
// panic("blob size too big")
//}
blob := make([]byte, size)
_, err := rand.Read(blob)
if err != nil {
panic("failed to make random blob")
}
return blob
}

View file

@ -1,270 +0,0 @@
package reflector
import (
"os"
"path"
"sync"
"time"
"github.com/lbryio/reflector.go/db"
"github.com/lbryio/reflector.go/internal/metrics"
"github.com/lbryio/reflector.go/store"
"github.com/lbryio/lbry.go/v2/extras/errors"
"github.com/lbryio/lbry.go/v2/extras/stop"
log "github.com/sirupsen/logrus"
)
type increment int
const (
sdInc increment = iota + 1
blobInc
errInc
)
type Summary struct {
Total, AlreadyStored, Sd, Blob, Err int
}
type Uploader struct {
db *db.SQL
store *store.DBBackedStore // could just be store.BlobStore interface
workers int
skipExistsCheck bool
deleteBlobsAfterUpload bool
stopper *stop.Group
countChan chan increment
count Summary
}
func NewUploader(db *db.SQL, store *store.DBBackedStore, workers int, skipExistsCheck, deleteBlobsAfterUpload bool) *Uploader {
return &Uploader{
db: db,
store: store,
workers: workers,
skipExistsCheck: skipExistsCheck,
deleteBlobsAfterUpload: deleteBlobsAfterUpload,
stopper: stop.New(),
countChan: make(chan increment),
}
}
func (u *Uploader) Stop() {
log.Infoln("stopping uploader")
u.stopper.StopAndWait()
}
func (u *Uploader) Upload(dirOrFilePath string) error {
paths, err := getPaths(dirOrFilePath)
if err != nil {
return err
}
u.count.Total = len(paths)
hashes := make([]string, len(paths))
for i, p := range paths {
hashes[i] = path.Base(p)
}
log.Debug("checking for existing blobs")
var exists map[string]bool
if !u.skipExistsCheck {
exists, err = u.db.HasBlobs(hashes, false)
if err != nil {
return err
}
u.count.AlreadyStored = len(exists)
}
log.Debugf("%d new blobs to upload", u.count.Total-u.count.AlreadyStored)
workerWG := sync.WaitGroup{}
pathChan := make(chan string)
for i := 0; i < u.workers; i++ {
workerWG.Add(1)
metrics.RoutinesQueue.WithLabelValues("reflector", "upload").Inc()
go func(i int) {
defer metrics.RoutinesQueue.WithLabelValues("reflector", "upload").Dec()
defer workerWG.Done()
defer func(i int) { log.Debugf("worker %d quitting", i) }(i)
u.worker(pathChan)
}(i)
}
countWG := sync.WaitGroup{}
countWG.Add(1)
metrics.RoutinesQueue.WithLabelValues("reflector", "uploader").Inc()
go func() {
defer metrics.RoutinesQueue.WithLabelValues("reflector", "uploader").Dec()
defer countWG.Done()
u.counter()
}()
Upload:
for _, f := range paths {
if exists != nil && exists[path.Base(f)] {
continue
}
select {
case pathChan <- f:
case <-u.stopper.Ch():
break Upload
}
}
close(pathChan)
workerWG.Wait()
close(u.countChan)
countWG.Wait()
u.stopper.Stop()
log.Debugf(
"upload stats: %d blobs total, %d already stored, %d SD blobs uploaded, %d content blobs uploaded, %d errors",
u.count.Total, u.count.AlreadyStored, u.count.Sd, u.count.Blob, u.count.Err,
)
return nil
}
// worker reads paths from a channel, uploads them, and optionally deletes them
func (u *Uploader) worker(pathChan chan string) {
for {
select {
case <-u.stopper.Ch():
return
case filepath, ok := <-pathChan:
if !ok {
return
}
err := u.uploadBlob(filepath)
if err != nil {
log.Errorln(err)
} else if u.deleteBlobsAfterUpload {
err = os.Remove(filepath)
if err != nil {
log.Errorln(errors.Prefix("deleting blob", err))
}
}
}
}
}
// uploadBlob uploads a blob
func (u *Uploader) uploadBlob(filepath string) (err error) {
defer func() {
if err != nil {
u.inc(errInc)
}
}()
blob, err := os.ReadFile(filepath)
if err != nil {
return errors.Err(err)
}
hash := BlobHash(blob)
if hash != path.Base(filepath) {
return errors.Err("file name does not match hash (%s != %s), skipping", filepath, hash)
}
if IsValidJSON(blob) {
log.Debugf("uploading SD blob %s", hash)
err := u.store.PutSD(hash, blob)
if err != nil {
return errors.Prefix("uploading SD blob "+hash, err)
}
u.inc(sdInc)
} else {
log.Debugf("uploading blob %s", hash)
err = u.store.Put(hash, blob)
if err != nil {
return errors.Prefix("uploading blob "+hash, err)
}
u.inc(blobInc)
}
return nil
}
// counter updates the counts of how many sd blobs and content blobs were uploaded, and how many
// errors were encountered. It occasionally prints the upload progress to debug.
func (u *Uploader) counter() {
start := time.Now()
for {
select {
case <-u.stopper.Ch():
return
case incrementType, ok := <-u.countChan:
if !ok {
return
}
switch incrementType {
case sdInc:
u.count.Sd++
case blobInc:
u.count.Blob++
case errInc:
u.count.Err++
}
}
if (u.count.Sd+u.count.Blob)%50 == 0 {
log.Debugf("%d of %d done (%s elapsed, %.3fs per blob)", u.count.Sd+u.count.Blob, u.count.Total-u.count.AlreadyStored, time.Since(start).String(), time.Since(start).Seconds()/float64(u.count.Sd+u.count.Blob))
}
}
}
func (u *Uploader) GetSummary() Summary {
return u.count
}
func (u *Uploader) inc(t increment) {
select {
case u.countChan <- t:
case <-u.stopper.Ch():
}
}
// getPaths returns the paths for files to upload. it takes a path to a file or a dir. for a file,
// it returns the full path to that file. for a dir, it returns the paths for all the files in the
// dir
func getPaths(dirOrFilePath string) ([]string, error) {
info, err := os.Stat(dirOrFilePath)
if err != nil {
return nil, errors.Err(err)
}
if info.Mode().IsRegular() {
return []string{dirOrFilePath}, nil
}
f, err := os.Open(dirOrFilePath)
if err != nil {
return nil, errors.Err(err)
}
files, err := f.Readdir(-1)
if err != nil {
return nil, errors.Err(err)
}
err = f.Close()
if err != nil {
return nil, errors.Err(err)
}
var filenames []string
for _, file := range files {
if !file.IsDir() {
filenames = append(filenames, dirOrFilePath+"/"+file.Name())
}
}
return filenames, nil
}

View file

@ -1,25 +0,0 @@
#!/usr/bin/env bash
err=0
trap 'err=1' ERR
# All the .go files, excluding auto generated folders
GO_FILES=$(find . -iname '*.go' -type f)
(
go install golang.org/x/tools/cmd/goimports@latest # Used in build script for generated files
# go install golang.org/x/lint/golint@latest # Linter
go install github.com/jgautheron/gocyclo@latest # Check against high complexity
go install github.com/mdempsky/unconvert@latest # Identifies unnecessary type conversions
go install github.com/kisielk/errcheck@latest # Checks for unhandled errors
go install honnef.co/go/tools/cmd/staticcheck@latest # all sorts of static analysis
)
# echo "Running unused..." && staticcheck $(go list ./...)
# go vet is the official Go static analyzer
echo "Running go vet..." && go vet $(go list ./...)
# checks for unhandled errors
echo "Running errcheck..." && errcheck $(go list ./...)
# check for unnecessary conversions - ignore autogen code
echo "Running unconvert..." && unconvert -v $(go list ./...)
echo "Running gocyclo..." && gocyclo -ignore "_test" -avg -over 28 $GO_FILES
#echo "Running golint..." && golint -set_exit_status $(go list ./...)
test $err = 0 # Return non-zero if any command failed

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@ -1,105 +0,0 @@
package http
import (
"net/http"
"sync"
"time"
"github.com/lbryio/reflector.go/internal/metrics"
"github.com/lbryio/reflector.go/reflector"
"github.com/lbryio/reflector.go/shared"
"github.com/lbryio/reflector.go/store"
"github.com/lbryio/lbry.go/v2/extras/errors"
"github.com/gin-gonic/gin"
log "github.com/sirupsen/logrus"
)
func (s *Server) getBlob(c *gin.Context) {
waiter := &sync.WaitGroup{}
waiter.Add(1)
enqueue(&blobRequest{c: c, finished: waiter})
waiter.Wait()
}
func (s *Server) HandleGetBlob(c *gin.Context) {
defer func() {
if r := recover(); r != nil {
log.Errorf("Recovered from panic: %v", r)
}
}()
start := time.Now()
hash := c.Query("hash")
edgeToken := c.Query("edge_token")
if reflector.IsProtected(hash) && edgeToken != s.edgeToken {
_ = c.Error(errors.Err("requested blob is protected"))
c.String(http.StatusForbidden, "requested blob is protected")
return
}
if s.missesCache.Has(hash) {
serialized, err := shared.NewBlobTrace(time.Since(start), "http").Serialize()
c.Header("Via", serialized)
if err != nil {
_ = c.Error(errors.Err(err))
c.String(http.StatusInternalServerError, err.Error())
return
}
c.AbortWithStatus(http.StatusNotFound)
return
}
blob, trace, err := s.store.Get(hash)
if err != nil {
serialized, serializeErr := trace.Serialize()
if serializeErr != nil {
_ = c.Error(errors.Prefix(serializeErr.Error(), err))
c.String(http.StatusInternalServerError, errors.Prefix(serializeErr.Error(), err).Error())
return
}
c.Header("Via", serialized)
if errors.Is(err, store.ErrBlobNotFound) {
_ = s.missesCache.Set(hash, true)
c.AbortWithStatus(http.StatusNotFound)
return
}
_ = c.Error(err)
c.String(http.StatusInternalServerError, err.Error())
return
}
serialized, err := trace.Serialize()
if err != nil {
_ = c.Error(err)
c.String(http.StatusInternalServerError, err.Error())
return
}
metrics.MtrOutBytesHttp.Add(float64(len(blob)))
metrics.BlobDownloadCount.Inc()
metrics.HttpDownloadCount.Inc()
c.Header("Via", serialized)
c.Header("Content-Disposition", "filename="+hash)
c.Data(http.StatusOK, "application/octet-stream", blob)
}
func (s *Server) hasBlob(c *gin.Context) {
hash := c.Query("hash")
has, err := s.store.Has(hash)
if err != nil {
_ = c.Error(err)
c.String(http.StatusInternalServerError, err.Error())
return
}
if has {
c.Status(http.StatusNoContent)
return
}
c.Status(http.StatusNotFound)
}
func (s *Server) recoveryHandler(c *gin.Context, err interface{}) {
c.JSON(500, gin.H{
"title": "Error",
"err": err,
})
}

View file

@ -1,82 +0,0 @@
package http
import (
"context"
"net/http"
"time"
"github.com/lbryio/reflector.go/store"
"github.com/lbryio/lbry.go/v2/extras/stop"
"github.com/bluele/gcache"
nice "github.com/ekyoung/gin-nice-recovery"
"github.com/gin-gonic/gin"
log "github.com/sirupsen/logrus"
)
// Server is an instance of a peer server that houses the listener and store.
type Server struct {
store store.BlobStore
grp *stop.Group
concurrentRequests int
missesCache gcache.Cache
edgeToken string
}
// NewServer returns an initialized Server pointer.
func NewServer(store store.BlobStore, requestQueueSize int, edgeToken string) *Server {
return &Server{
store: store,
grp: stop.New(),
concurrentRequests: requestQueueSize,
missesCache: gcache.New(2000).Expiration(5 * time.Minute).ARC().Build(),
edgeToken: edgeToken,
}
}
// Shutdown gracefully shuts down the peer server.
func (s *Server) Shutdown() {
log.Debug("shutting down HTTP server")
s.grp.StopAndWait()
log.Debug("HTTP server stopped")
}
// Start starts the server listener to handle connections.
func (s *Server) Start(address string) error {
gin.SetMode(gin.ReleaseMode)
router := gin.New()
router.Use(gin.Logger())
// Install nice.Recovery, passing the handler to call after recovery
router.Use(nice.Recovery(s.recoveryHandler))
router.GET("/blob", s.getBlob)
router.HEAD("/blob", s.hasBlob)
srv := &http.Server{
Addr: address,
Handler: router,
}
go s.listenForShutdown(srv)
go InitWorkers(s, s.concurrentRequests)
// Initializing the server in a goroutine so that
// it won't block the graceful shutdown handling below
s.grp.Add(1)
go func() {
defer s.grp.Done()
log.Println("HTTP server listening on " + address)
if err := srv.ListenAndServe(); err != nil && err != http.ErrServerClosed {
log.Fatalf("listen: %s\n", err)
}
}()
return nil
}
func (s *Server) listenForShutdown(listener *http.Server) {
<-s.grp.Ch()
// The context is used to inform the server it has 5 seconds to finish
// the request it is currently handling
ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
defer cancel()
if err := listener.Shutdown(ctx); err != nil {
log.Fatal("Server forced to shutdown:", err)
}
}

View file

@ -1,46 +0,0 @@
package http
import (
"sync"
"github.com/lbryio/reflector.go/internal/metrics"
"github.com/lbryio/lbry.go/v2/extras/stop"
"github.com/gin-gonic/gin"
)
type blobRequest struct {
c *gin.Context
finished *sync.WaitGroup
}
var getReqCh = make(chan *blobRequest, 20000)
func InitWorkers(server *Server, workers int) {
stopper := stop.New(server.grp)
for i := 0; i < workers; i++ {
metrics.RoutinesQueue.WithLabelValues("http", "worker").Inc()
go func(worker int) {
defer metrics.RoutinesQueue.WithLabelValues("http", "worker").Dec()
for {
select {
case <-stopper.Ch():
case r := <-getReqCh:
process(server, r)
metrics.HttpBlobReqQueue.Dec()
}
}
}(i)
}
}
func enqueue(b *blobRequest) {
metrics.HttpBlobReqQueue.Inc()
getReqCh <- b
}
func process(server *Server, r *blobRequest) {
server.HandleGetBlob(r.c)
r.finished.Done()
}

View file

@ -1,141 +0,0 @@
package http3
import (
"bytes"
"encoding/hex"
"fmt"
"io"
"net/http"
"sync"
"time"
"github.com/lbryio/reflector.go/internal/metrics"
"github.com/lbryio/reflector.go/shared"
"github.com/lbryio/reflector.go/store"
"github.com/lbryio/lbry.go/v2/extras/errors"
"github.com/lbryio/lbry.go/v2/stream"
"github.com/quic-go/quic-go/http3"
log "github.com/sirupsen/logrus"
)
// Client is an instance of a client connected to a server.
type Client struct {
Timeout time.Duration
conn *http.Client
roundTripper *http3.RoundTripper
ServerAddr string
}
// Close closes the connection with the client.
func (c *Client) Close() error {
c.conn.CloseIdleConnections()
return c.roundTripper.Close()
}
// GetStream gets a stream
func (c *Client) GetStream(sdHash string, blobCache store.BlobStore) (stream.Stream, error) {
var sd stream.SDBlob
b, _, err := c.GetBlob(sdHash)
if err != nil {
return nil, err
}
err = sd.FromBlob(b)
if err != nil {
return nil, err
}
s := make(stream.Stream, len(sd.BlobInfos)+1-1) // +1 for sd blob, -1 for last null blob
s[0] = b
for i := 0; i < len(sd.BlobInfos)-1; i++ {
var trace shared.BlobTrace
s[i+1], trace, err = c.GetBlob(hex.EncodeToString(sd.BlobInfos[i].BlobHash))
if err != nil {
return nil, err
}
log.Debug(trace.String())
}
return s, nil
}
// HasBlob checks if the blob is available
func (c *Client) HasBlob(hash string) (bool, error) {
resp, err := c.conn.Get(fmt.Sprintf("https://%s/has/%s", c.ServerAddr, hash))
if err != nil {
return false, errors.Err(err)
}
defer func() { _ = resp.Body.Close() }()
if resp.StatusCode == http.StatusOK {
return true, nil
}
if resp.StatusCode == http.StatusNotFound {
return false, nil
}
return false, errors.Err("non 200 status code returned: %d", resp.StatusCode)
}
// GetBlob gets a blob
func (c *Client) GetBlob(hash string) (stream.Blob, shared.BlobTrace, error) {
start := time.Now()
resp, err := c.conn.Get(fmt.Sprintf("https://%s/get/%s?trace=true", c.ServerAddr, hash))
if err != nil {
return nil, shared.NewBlobTrace(time.Since(start), "http3"), errors.Err(err)
}
defer func() { _ = resp.Body.Close() }()
if resp.StatusCode == http.StatusNotFound {
fmt.Printf("%s blob not found %d\n", hash, resp.StatusCode)
return nil, shared.NewBlobTrace(time.Since(start), "http3"), errors.Err(store.ErrBlobNotFound)
} else if resp.StatusCode != http.StatusOK {
return nil, shared.NewBlobTrace(time.Since(start), "http3"), errors.Err("non 200 status code returned: %d", resp.StatusCode)
}
tmp := getBuffer()
defer putBuffer(tmp)
serialized := resp.Header.Get("Via")
trace := shared.NewBlobTrace(time.Since(start), "http3")
if serialized != "" {
parsedTrace, err := shared.Deserialize(serialized)
if err != nil {
return nil, shared.NewBlobTrace(time.Since(start), "http3"), err
}
trace = *parsedTrace
}
written, err := io.Copy(tmp, resp.Body)
if err != nil {
return nil, trace.Stack(time.Since(start), "http3"), errors.Err(err)
}
blob := make([]byte, written)
copy(blob, tmp.Bytes())
metrics.MtrInBytesUdp.Add(float64(len(blob)))
return blob, trace.Stack(time.Since(start), "http3"), nil
}
// buffer pool to reduce GC
// https://www.captaincodeman.com/2017/06/02/golang-buffer-pool-gotcha
var buffers = sync.Pool{
// New is called when a new instance is needed
New: func() interface{} {
buf := make([]byte, 0, stream.MaxBlobSize)
return bytes.NewBuffer(buf)
},
}
// getBuffer fetches a buffer from the pool
func getBuffer() *bytes.Buffer {
return buffers.Get().(*bytes.Buffer)
}
// putBuffer returns a buffer to the pool
func putBuffer(buf *bytes.Buffer) {
buf.Reset()
buffers.Put(buf)
}

View file

@ -1,216 +0,0 @@
package http3
import (
"crypto/rand"
"crypto/rsa"
"crypto/tls"
"crypto/x509"
"encoding/json"
"encoding/pem"
"fmt"
"math/big"
"net/http"
"strconv"
"sync"
"time"
"github.com/lbryio/reflector.go/internal/metrics"
"github.com/lbryio/reflector.go/reflector"
"github.com/lbryio/reflector.go/store"
"github.com/lbryio/lbry.go/v2/extras/errors"
"github.com/lbryio/lbry.go/v2/extras/stop"
"github.com/gorilla/mux"
"github.com/quic-go/quic-go"
"github.com/quic-go/quic-go/http3"
log "github.com/sirupsen/logrus"
)
// Server is an instance of a peer server that houses the listener and store.
type Server struct {
store store.BlobStore
grp *stop.Group
concurrentRequests int
}
// NewServer returns an initialized Server pointer.
func NewServer(store store.BlobStore, requestQueueSize int) *Server {
return &Server{
store: store,
grp: stop.New(),
concurrentRequests: requestQueueSize,
}
}
// Shutdown gracefully shuts down the peer server.
func (s *Server) Shutdown() {
log.Debug("shutting down http3 peer server")
s.grp.StopAndWait()
log.Debug("http3 peer server stopped")
}
func (s *Server) logError(e error) {
if e == nil {
return
}
shouldLog := metrics.TrackError(metrics.DirectionDownload, e)
if shouldLog {
log.Errorln(errors.FullTrace(e))
}
}
type availabilityResponse struct {
LbrycrdAddress string `json:"lbrycrd_address"`
IsAvailable bool `json:"is_available"`
}
// Start starts the server listener to handle connections.
func (s *Server) Start(address string) error {
log.Println("HTTP3 peer listening on " + address)
window500M := 500 * 1 << 20
quicConf := &quic.Config{
MaxStreamReceiveWindow: uint64(window500M),
MaxConnectionReceiveWindow: uint64(window500M),
EnableDatagrams: true,
HandshakeIdleTimeout: 4 * time.Second,
MaxIdleTimeout: 20 * time.Second,
}
r := mux.NewRouter()
r.HandleFunc("/get/{hash}", func(w http.ResponseWriter, r *http.Request) {
waiter := &sync.WaitGroup{}
waiter.Add(1)
enqueue(&blobRequest{request: r, reply: w, finished: waiter})
waiter.Wait()
})
r.HandleFunc("/has/{hash}", func(w http.ResponseWriter, r *http.Request) {
vars := mux.Vars(r)
requestedBlob := vars["hash"]
blobExists, err := s.store.Has(requestedBlob)
if err != nil {
http.Error(w, err.Error(), http.StatusBadRequest)
s.logError(err)
return
}
if !blobExists {
w.WriteHeader(http.StatusNotFound)
}
// LbrycrdAddress to be used when paying for data. Not implemented yet.
const LbrycrdAddress = "bJxKvpD96kaJLriqVajZ7SaQTsWWyrGQct"
resp, err := json.Marshal(availabilityResponse{
LbrycrdAddress: LbrycrdAddress,
IsAvailable: blobExists,
})
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
s.logError(err)
return
}
_, err = w.Write(resp)
if err != nil {
s.logError(err)
}
})
server := http3.Server{
Addr: address,
Handler: r,
TLSConfig: generateTLSConfig(),
QUICConfig: quicConf,
}
go InitWorkers(s, s.concurrentRequests)
go s.listenForShutdown(&server)
s.grp.Add(1)
go func() {
s.listenAndServe(&server)
s.grp.Done()
}()
return nil
}
// Setup a bare-bones TLS config for the server
func generateTLSConfig() *tls.Config {
key, err := rsa.GenerateKey(rand.Reader, 1024)
if err != nil {
panic(err)
}
template := x509.Certificate{SerialNumber: big.NewInt(1)}
certDER, err := x509.CreateCertificate(rand.Reader, &template, &template, &key.PublicKey, key)
if err != nil {
panic(err)
}
keyPEM := pem.EncodeToMemory(&pem.Block{Type: "RSA PRIVATE KEY", Bytes: x509.MarshalPKCS1PrivateKey(key)})
certPEM := pem.EncodeToMemory(&pem.Block{Type: "CERTIFICATE", Bytes: certDER})
tlsCert, err := tls.X509KeyPair(certPEM, keyPEM)
if err != nil {
panic(err)
}
return &tls.Config{
Certificates: []tls.Certificate{tlsCert},
NextProtos: []string{"http3-reflector-server"},
}
}
func (s *Server) listenAndServe(server *http3.Server) {
err := server.ListenAndServe()
if err != nil && err != quic.ErrServerClosed {
log.Errorln(errors.FullTrace(err))
}
}
func (s *Server) listenForShutdown(listener *http3.Server) {
<-s.grp.Ch()
err := listener.Close()
if err != nil {
log.Error("error closing listener for peer server - ", err)
}
}
func (s *Server) HandleGetBlob(w http.ResponseWriter, r *http.Request) {
vars := mux.Vars(r)
requestedBlob := vars["hash"]
traceParam := r.URL.Query().Get("trace")
var err error
wantsTrace := false
if traceParam != "" {
wantsTrace, err = strconv.ParseBool(traceParam)
if err != nil {
wantsTrace = false
}
}
if reflector.IsProtected(requestedBlob) {
http.Error(w, "requested blob is protected", http.StatusForbidden)
return
}
blob, trace, err := s.store.Get(requestedBlob)
if wantsTrace {
serialized, err := trace.Serialize()
if err != nil {
http.Error(w, err.Error(), http.StatusNotFound)
return
}
w.Header().Add("Via", serialized)
log.Debug(trace.String())
}
if err != nil {
if errors.Is(err, store.ErrBlobNotFound) {
http.Error(w, err.Error(), http.StatusNotFound)
return
}
fmt.Printf("%s: %s", requestedBlob, errors.FullTrace(err))
s.logError(err)
http.Error(w, err.Error(), http.StatusBadRequest)
return
}
_, err = w.Write(blob)
if err != nil {
s.logError(err)
}
metrics.MtrOutBytesUdp.Add(float64(len(blob)))
metrics.BlobDownloadCount.Inc()
metrics.Http3DownloadCount.Inc()
}

View file

@ -1,117 +0,0 @@
package http3
import (
"crypto/tls"
"crypto/x509"
"net/http"
"strings"
"sync"
"time"
"github.com/lbryio/reflector.go/shared"
"github.com/lbryio/reflector.go/store"
"github.com/lbryio/lbry.go/v2/extras/errors"
"github.com/lbryio/lbry.go/v2/stream"
"github.com/quic-go/quic-go"
"github.com/quic-go/quic-go/http3"
)
// Store is a blob store that gets blobs from a peer.
// It satisfies the store.BlobStore interface but cannot put or delete blobs.
type Store struct {
opts StoreOpts
NotFoundCache *sync.Map
}
// StoreOpts allows to set options for a new Store.
type StoreOpts struct {
Address string
Timeout time.Duration
}
// NewStore makes a new peer store.
func NewStore(opts StoreOpts) *Store {
return &Store{opts: opts, NotFoundCache: &sync.Map{}}
}
func (p *Store) getClient() (*Client, error) {
var qconf quic.Config
window500M := 500 * 1 << 20
qconf.MaxStreamReceiveWindow = uint64(window500M)
qconf.MaxConnectionReceiveWindow = uint64(window500M)
qconf.EnableDatagrams = true
qconf.HandshakeIdleTimeout = 4 * time.Second
qconf.MaxIdleTimeout = 20 * time.Second
pool, err := x509.SystemCertPool()
if err != nil {
return nil, err
}
roundTripper := &http3.RoundTripper{
TLSClientConfig: &tls.Config{
RootCAs: pool,
InsecureSkipVerify: true,
},
QUICConfig: &qconf,
}
connection := &http.Client{
Transport: roundTripper,
}
c := &Client{
conn: connection,
roundTripper: roundTripper,
ServerAddr: p.opts.Address,
}
return c, errors.Prefix("connection error", err)
}
func (p *Store) Name() string { return "http3" }
// Has asks the peer if they have a hash
func (p *Store) Has(hash string) (bool, error) {
c, err := p.getClient()
if err != nil {
return false, err
}
defer func() { _ = c.Close() }()
return c.HasBlob(hash)
}
// Get downloads the blob from the peer
func (p *Store) Get(hash string) (stream.Blob, shared.BlobTrace, error) {
start := time.Now()
if lastChecked, ok := p.NotFoundCache.Load(hash); ok {
if lastChecked.(time.Time).After(time.Now().Add(-5 * time.Minute)) {
return nil, shared.NewBlobTrace(time.Since(start), p.Name()+"-notfoundcache"), store.ErrBlobNotFound
}
}
c, err := p.getClient()
if err != nil && strings.Contains(err.Error(), "blob not found") {
p.NotFoundCache.Store(hash, time.Now())
}
if err != nil {
return nil, shared.NewBlobTrace(time.Since(start), p.Name()), err
}
defer func() { _ = c.Close() }()
return c.GetBlob(hash)
}
// Put is not supported
func (p *Store) Put(hash string, blob stream.Blob) error {
return errors.Err(shared.ErrNotImplemented)
}
// PutSD is not supported
func (p *Store) PutSD(hash string, blob stream.Blob) error {
return errors.Err(shared.ErrNotImplemented)
}
// Delete is not supported
func (p *Store) Delete(hash string) error {
return errors.Err(shared.ErrNotImplemented)
}
// Shutdown is not supported
func (p *Store) Shutdown() {
}

View file

@ -1,46 +0,0 @@
package http3
import (
"net/http"
"sync"
"github.com/lbryio/reflector.go/internal/metrics"
"github.com/lbryio/lbry.go/v2/extras/stop"
)
type blobRequest struct {
request *http.Request
reply http.ResponseWriter
finished *sync.WaitGroup
}
var getReqCh = make(chan *blobRequest, 20000)
func InitWorkers(server *Server, workers int) {
stopper := stop.New(server.grp)
for i := 0; i < workers; i++ {
metrics.RoutinesQueue.WithLabelValues("http3", "worker").Inc()
go func(worker int) {
defer metrics.RoutinesQueue.WithLabelValues("http3", "worker").Dec()
for {
select {
case <-stopper.Ch():
case r := <-getReqCh:
metrics.Http3BlobReqQueue.Dec()
process(server, r)
}
}
}(i)
}
}
func enqueue(b *blobRequest) {
metrics.Http3BlobReqQueue.Inc()
getReqCh <- b
}
func process(server *Server, r *blobRequest) {
server.HandleGetBlob(r.reply, r.request)
r.finished.Done()
}

View file

@ -1,207 +0,0 @@
package peer
import (
"bufio"
"encoding/hex"
"encoding/json"
"io"
"net"
"time"
"github.com/lbryio/reflector.go/internal/metrics"
"github.com/lbryio/reflector.go/shared"
"github.com/lbryio/reflector.go/store"
"github.com/lbryio/lbry.go/v2/extras/errors"
"github.com/lbryio/lbry.go/v2/stream"
log "github.com/sirupsen/logrus"
)
// Client is an instance of a client connected to a server.
type Client struct {
Timeout time.Duration
conn net.Conn
buf *bufio.Reader
connected bool
}
// Connect connects to a specific clients and errors if it cannot be contacted.
func (c *Client) Connect(address string) error {
var err error
if c.Timeout == 0 {
c.Timeout = 5 * time.Second
}
c.conn, err = net.Dial("tcp4", address)
if err != nil {
return err
}
c.connected = true
c.buf = bufio.NewReader(c.conn)
return nil
}
// Close closes the connection with the client.
func (c *Client) Close() error {
c.connected = false
return c.conn.Close()
}
// GetStream gets a stream
func (c *Client) GetStream(sdHash string, blobCache store.BlobStore) (stream.Stream, error) {
if !c.connected {
return nil, errors.Err("not connected")
}
var sd stream.SDBlob
b, trace, err := c.GetBlob(sdHash)
if err != nil {
return nil, err
}
log.Debug(trace.String())
err = sd.FromBlob(b)
if err != nil {
return nil, err
}
s := make(stream.Stream, len(sd.BlobInfos)+1-1) // +1 for sd blob, -1 for last null blob
s[0] = b
for i := 0; i < len(sd.BlobInfos)-1; i++ {
s[i+1], trace, err = c.GetBlob(hex.EncodeToString(sd.BlobInfos[i].BlobHash))
if err != nil {
return nil, err
}
log.Debug(trace.String())
}
return s, nil
}
// HasBlob checks if the blob is available
func (c *Client) HasBlob(hash string) (bool, error) {
if !c.connected {
return false, errors.Err("not connected")
}
sendRequest, err := json.Marshal(availabilityRequest{
RequestedBlobs: []string{hash},
})
if err != nil {
return false, err
}
err = c.write(sendRequest)
if err != nil {
return false, err
}
var resp availabilityResponse
err = c.read(&resp)
if err != nil {
return false, err
}
for _, h := range resp.AvailableBlobs {
if h == hash {
return true, nil
}
}
return false, nil
}
// GetBlob gets a blob
func (c *Client) GetBlob(hash string) (stream.Blob, shared.BlobTrace, error) {
start := time.Now()
if !c.connected {
return nil, shared.NewBlobTrace(time.Since(start), "tcp"), errors.Err("not connected")
}
sendRequest, err := json.Marshal(blobRequest{
RequestedBlob: hash,
})
if err != nil {
return nil, shared.NewBlobTrace(time.Since(start), "tcp"), err
}
err = c.write(sendRequest)
if err != nil {
return nil, shared.NewBlobTrace(time.Since(start), "tcp"), err
}
var resp blobResponse
err = c.read(&resp)
if err != nil {
return nil, shared.NewBlobTrace(time.Since(start), "tcp"), err
}
trace := shared.NewBlobTrace(time.Since(start), "tcp")
if resp.RequestTrace != nil {
trace = *resp.RequestTrace
}
if resp.IncomingBlob.Error != "" {
return nil, trace, errors.Prefix(hash[:8], resp.IncomingBlob.Error)
}
if resp.IncomingBlob.BlobHash != hash {
return nil, trace.Stack(time.Since(start), "tcp"), errors.Prefix(hash[:8], "blob hash in response does not match requested hash")
}
if resp.IncomingBlob.Length <= 0 {
return nil, trace, errors.Prefix(hash[:8], "length reported as <= 0")
}
log.Debugf("receiving blob %s from %s", hash[:8], c.conn.RemoteAddr())
blob, err := c.readRawBlob(resp.IncomingBlob.Length)
if err != nil {
return nil, (*resp.RequestTrace).Stack(time.Since(start), "tcp"), err
}
metrics.MtrInBytesTcp.Add(float64(len(blob)))
return blob, trace.Stack(time.Since(start), "tcp"), nil
}
func (c *Client) read(v interface{}) error {
err := c.conn.SetReadDeadline(time.Now().Add(c.Timeout))
if err != nil {
return errors.Err(err)
}
m, err := readNextMessage(c.buf)
if err != nil {
return err
}
log.Debugf("read %d bytes from %s", len(m), c.conn.RemoteAddr())
err = json.Unmarshal(m, v)
return errors.Err(err)
}
func (c *Client) readRawBlob(blobSize int) ([]byte, error) {
err := c.conn.SetReadDeadline(time.Now().Add(c.Timeout))
if err != nil {
return nil, errors.Err(err)
}
blob := make([]byte, blobSize)
n, err := io.ReadFull(c.buf, blob)
log.Debugf("read %d bytes from %s", n, c.conn.RemoteAddr())
return blob, errors.Err(err)
}
func (c *Client) write(b []byte) error {
err := c.conn.SetWriteDeadline(time.Now().Add(c.Timeout))
if err != nil {
return errors.Err(err)
}
log.Debugf("writing %d bytes to %s", len(b), c.conn.RemoteAddr())
n, err := c.conn.Write(b)
if err == nil && n != len(b) {
err = io.ErrShortWrite
}
return errors.Err(err)
}

View file

@ -1,420 +0,0 @@
package peer
import (
"bufio"
"encoding/hex"
"encoding/json"
ee "errors"
"io"
"net"
"strings"
"time"
"github.com/lbryio/reflector.go/internal/metrics"
"github.com/lbryio/reflector.go/reflector"
"github.com/lbryio/reflector.go/shared"
"github.com/lbryio/reflector.go/store"
"github.com/lbryio/lbry.go/v2/extras/errors"
"github.com/lbryio/lbry.go/v2/extras/stop"
"github.com/lbryio/lbry.go/v2/stream"
log "github.com/sirupsen/logrus"
)
const (
// DefaultPort is the port the peer server listens on if not passed in.
DefaultPort = 3333
// LbrycrdAddress to be used when paying for data. Not implemented yet.
LbrycrdAddress = "bJxKvpD96kaJLriqVajZ7SaQTsWWyrGQct"
)
// Server is an instance of a peer server that houses the listener and store.
type Server struct {
store store.BlobStore
closed bool
grp *stop.Group
}
// NewServer returns an initialized Server pointer.
func NewServer(store store.BlobStore) *Server {
return &Server{
store: store,
grp: stop.New(),
}
}
// Shutdown gracefully shuts down the peer server.
func (s *Server) Shutdown() {
log.Debug("shutting down peer server")
s.grp.StopAndWait()
log.Debug("peer server stopped")
}
// Start starts the server listener to handle connections.
func (s *Server) Start(address string) error {
log.Println("peer listening on " + address)
l, err := net.Listen("tcp4", address)
if err != nil {
return err
}
go s.listenForShutdown(l)
s.grp.Add(1)
go func() {
s.listenAndServe(l)
s.grp.Done()
}()
return nil
}
func (s *Server) listenForShutdown(listener net.Listener) {
<-s.grp.Ch()
s.closed = true
err := listener.Close()
if err != nil {
log.Error("error closing listener for peer server - ", err)
}
}
func (s *Server) listenAndServe(listener net.Listener) {
for {
conn, err := listener.Accept()
if err != nil {
if s.closed {
return
}
log.Error(errors.Prefix("accepting conn", err))
} else {
s.grp.Add(1)
metrics.RoutinesQueue.WithLabelValues("peer", "server-handleconn").Inc()
go func() {
defer metrics.RoutinesQueue.WithLabelValues("peer", "server-handleconn").Dec()
s.handleConnection(conn)
s.grp.Done()
}()
}
}
}
func (s *Server) handleConnection(conn net.Conn) {
defer func() {
if err := conn.Close(); err != nil {
log.Error(errors.Prefix("closing peer conn", err))
}
}()
timeoutDuration := 1 * time.Minute
buf := bufio.NewReader(conn)
for {
var request []byte
var response []byte
err := conn.SetReadDeadline(time.Now().Add(timeoutDuration))
if err != nil {
log.Error(errors.FullTrace(err))
}
request, err = readNextMessage(buf)
if err != nil {
if err != io.EOF {
s.logError(err)
}
return
}
err = conn.SetReadDeadline(time.Time{})
if err != nil {
log.Error(errors.FullTrace(err))
}
response, err = s.handleCompositeRequest(request)
if err != nil {
log.Error(errors.FullTrace(err))
return
}
err = conn.SetWriteDeadline(time.Now().Add(timeoutDuration))
if err != nil {
log.Error(errors.FullTrace(err))
}
n, err := conn.Write(response)
if err != nil {
if !strings.Contains(err.Error(), "connection reset by peer") { // means the other side closed the connection using TCP reset
s.logError(err)
}
return
} else if n != len(response) {
log.Errorln(io.ErrShortWrite)
return
}
err = conn.SetWriteDeadline(time.Time{})
if err != nil {
log.Error(errors.FullTrace(err))
}
}
}
func (s *Server) handleAvailabilityRequest(data []byte) ([]byte, error) {
var request availabilityRequest
err := json.Unmarshal(data, &request)
if err != nil {
return nil, errors.Err(err)
}
availableBlobs := []string{}
for _, blobHash := range request.RequestedBlobs {
exists, err := s.store.Has(blobHash)
if err != nil {
return nil, err
}
if exists {
availableBlobs = append(availableBlobs, blobHash)
}
}
return json.Marshal(availabilityResponse{LbrycrdAddress: LbrycrdAddress, AvailableBlobs: availableBlobs})
}
//func (s *Server) handlePaymentRateNegotiation(data []byte) ([]byte, error) {
// var request paymentRateRequest
// err := json.Unmarshal(data, &request)
// if err != nil {
// return nil, err
// }
//
// offerReply := paymentRateAccepted
// if request.BlobDataPaymentRate < 0 {
// offerReply = paymentRateTooLow
// }
//
// return json.Marshal(paymentRateResponse{BlobDataPaymentRate: offerReply})
//}
//
//func (s *Server) handleBlobRequest(data []byte) ([]byte, error) {
// var request blobRequest
// err := json.Unmarshal(data, &request)
// if err != nil {
// return nil, err
// }
//
// log.Debugln("Sending blob " + request.RequestedBlob[:8])
//
// blob, err := s.store.Get(request.RequestedBlob)
// if err != nil {
// return nil, err
// }
//
// response, err := json.Marshal(blobResponse{IncomingBlob: incomingBlob{
// BlobHash: reflector.BlobHash(blob),
// Length: len(blob),
// }})
// if err != nil {
// return nil, err
// }
//
// return append(response, blob...), nil
//}
func (s *Server) handleCompositeRequest(data []byte) ([]byte, error) {
var request compositeRequest
err := json.Unmarshal(data, &request)
if err != nil {
var je *json.SyntaxError
if ee.As(err, &je) {
return nil, errors.Err("invalid json request: offset %d in data %s", je.Offset, hex.EncodeToString(data))
}
return nil, errors.Err(err)
}
response := compositeResponse{
LbrycrdAddress: LbrycrdAddress,
AvailableBlobs: []string{},
}
if len(request.RequestedBlobs) > 0 {
for _, blobHash := range request.RequestedBlobs {
if reflector.IsProtected(blobHash) {
return nil, errors.Err("requested blob is protected")
}
exists, err := s.store.Has(blobHash)
if err != nil {
return nil, err
}
if exists {
response.AvailableBlobs = append(response.AvailableBlobs, blobHash)
}
}
}
if request.BlobDataPaymentRate != nil {
response.BlobDataPaymentRate = paymentRateAccepted
if *request.BlobDataPaymentRate < 0 {
response.BlobDataPaymentRate = paymentRateTooLow
}
}
var blob []byte
var trace shared.BlobTrace
if request.RequestedBlob != "" {
if len(request.RequestedBlob) != stream.BlobHashHexLength {
return nil, errors.Err("Invalid blob hash length")
}
log.Debugln("Sending blob " + request.RequestedBlob[:8])
blob, trace, err = s.store.Get(request.RequestedBlob)
log.Debug(trace.String())
if errors.Is(err, store.ErrBlobNotFound) {
response.IncomingBlob = &incomingBlob{
Error: err.Error(),
}
} else if err != nil {
return nil, err
} else {
response.IncomingBlob = &incomingBlob{
BlobHash: request.RequestedBlob,
Length: len(blob),
}
metrics.MtrOutBytesTcp.Add(float64(len(blob)))
metrics.BlobDownloadCount.Inc()
metrics.PeerDownloadCount.Inc()
}
}
respData, err := json.Marshal(response)
if err != nil {
return nil, err
}
return append(respData, blob...), nil
}
func (s *Server) logError(e error) {
if e == nil {
return
}
shouldLog := metrics.TrackError(metrics.DirectionDownload, e)
if shouldLog {
log.Errorln(errors.FullTrace(e))
}
}
func readNextMessage(buf *bufio.Reader) ([]byte, error) {
first_byte, err := buf.ReadByte()
if err != nil {
return nil, err
}
if first_byte != '{' {
// every request starts with '{'. Checking here disconnects earlier, so we don't wait until timeout
return nil, errInvalidData
}
msg := []byte("{")
eof := false
for {
chunk, err := buf.ReadBytes('}')
if err != nil {
if err != io.EOF {
//log.Errorln("readBytes error:", err) // logged by caller
return msg, err
}
eof = true
}
//log.Debugln("got", len(chunk), "bytes.")
//spew.Dump(chunk)
if len(chunk) > 0 {
msg = append(msg, chunk...)
if len(msg) > maxRequestSize {
return msg, errRequestTooLarge
} else if len(msg) > 0 && msg[0] != '{' {
return msg, errInvalidData
}
// yes, this is how the peer protocol knows when the request finishes
if reflector.IsValidJSON(msg) {
break
}
}
if eof {
break
}
}
//log.Debugln("total size:", len(request))
//if len(request) > 0 {
// spew.Dump(request)
//}
if len(msg) == 0 && eof {
return nil, io.EOF
}
return msg, nil
}
const (
maxRequestSize = 64 * (2 ^ 10) // 64kb
paymentRateAccepted = "RATE_ACCEPTED"
paymentRateTooLow = "RATE_TOO_LOW"
//ToDo: paymentRateUnset is not used but exists in the protocol.
//paymentRateUnset = "RATE_UNSET"
)
var errRequestTooLarge = errors.Base("request is too large")
var errInvalidData = errors.Base("Invalid data")
type availabilityRequest struct {
LbrycrdAddress bool `json:"lbrycrd_address"`
RequestedBlobs []string `json:"requested_blobs"`
}
type availabilityResponse struct {
LbrycrdAddress string `json:"lbrycrd_address"`
AvailableBlobs []string `json:"available_blobs"`
}
type paymentRateRequest struct {
BlobDataPaymentRate float64 `json:"blob_data_payment_rate"`
}
type paymentRateResponse struct {
BlobDataPaymentRate string `json:"blob_data_payment_rate"`
}
type blobRequest struct {
RequestedBlob string `json:"requested_blob"`
}
type incomingBlob struct {
Error string `json:"error,omitempty"`
BlobHash string `json:"blob_hash"`
Length int `json:"length"`
}
type blobResponse struct {
IncomingBlob incomingBlob `json:"incoming_blob"`
RequestTrace *shared.BlobTrace
}
type compositeRequest struct {
LbrycrdAddress bool `json:"lbrycrd_address"`
RequestedBlobs []string `json:"requested_blobs"`
BlobDataPaymentRate *float64 `json:"blob_data_payment_rate"`
RequestedBlob string `json:"requested_blob"`
}
type compositeResponse struct {
LbrycrdAddress string `json:"lbrycrd_address,omitempty"`
AvailableBlobs []string `json:"available_blobs"`
BlobDataPaymentRate string `json:"blob_data_payment_rate,omitempty"`
IncomingBlob *incomingBlob `json:"incoming_blob,omitempty"`
}

View file

@ -1,82 +0,0 @@
package peer
import (
"strings"
"time"
"github.com/lbryio/reflector.go/shared"
"github.com/lbryio/reflector.go/store"
"github.com/lbryio/lbry.go/v2/extras/errors"
"github.com/lbryio/lbry.go/v2/stream"
)
// Store is a blob store that gets blobs from a peer.
// It satisfies the store.BlobStore interface but cannot put or delete blobs.
type Store struct {
opts StoreOpts
}
// StoreOpts allows to set options for a new Store.
type StoreOpts struct {
Address string
Timeout time.Duration
}
// NewStore makes a new peer store.
func NewStore(opts StoreOpts) *Store {
return &Store{opts: opts}
}
func (p *Store) getClient() (*Client, error) {
c := &Client{Timeout: p.opts.Timeout}
err := c.Connect(p.opts.Address)
return c, errors.Prefix("connection error", err)
}
func (p *Store) Name() string { return "peer" }
// Has asks the peer if they have a hash
func (p *Store) Has(hash string) (bool, error) {
c, err := p.getClient()
if err != nil {
return false, err
}
defer func() { _ = c.Close() }()
return c.HasBlob(hash)
}
// Get downloads the blob from the peer
func (p *Store) Get(hash string) (stream.Blob, shared.BlobTrace, error) {
start := time.Now()
c, err := p.getClient()
if err != nil {
return nil, shared.NewBlobTrace(time.Since(start), p.Name()), err
}
defer func() { _ = c.Close() }()
blob, trace, err := c.GetBlob(hash)
if err != nil && strings.Contains(err.Error(), "blob not found") {
return nil, trace, store.ErrBlobNotFound
}
return blob, trace, err
}
// Put is not supported
func (p *Store) Put(hash string, blob stream.Blob) error {
return errors.Err(shared.ErrNotImplemented)
}
// PutSD is not supported
func (p *Store) PutSD(hash string, blob stream.Blob) error {
return errors.Err(shared.ErrNotImplemented)
}
// Delete is not supported
func (p *Store) Delete(hash string) error {
return errors.Err(shared.ErrNotImplemented)
}
// Shutdown is not supported
func (p *Store) Shutdown() {
}

View file

@ -1,6 +0,0 @@
package shared
import "github.com/lbryio/lbry.go/v2/extras/errors"
//ErrNotImplemented is a standard error when a store that implements the store interface does not implement a method
var ErrNotImplemented = errors.Base("this store does not implement this method")

View file

@ -1,82 +0,0 @@
package shared
import (
"encoding/json"
"fmt"
"os"
"time"
"github.com/lbryio/lbry.go/v2/extras/errors"
)
type BlobStack struct {
Timing time.Duration `json:"timing"`
OriginName string `json:"origin_name"`
HostName string `json:"host_name"`
}
type BlobTrace struct {
Stacks []BlobStack `json:"stacks"`
}
var hostName *string
func getHostName() string {
if hostName == nil {
hn, err := os.Hostname()
if err != nil {
hn = "unknown"
}
hostName = &hn
}
return *hostName
}
func (b *BlobTrace) Stack(timing time.Duration, originName string) BlobTrace {
b.Stacks = append(b.Stacks, BlobStack{
Timing: timing,
OriginName: originName,
HostName: getHostName(),
})
return *b
}
func (b *BlobTrace) Merge(otherTrance BlobTrace) BlobTrace {
b.Stacks = append(b.Stacks, otherTrance.Stacks...)
return *b
}
func NewBlobTrace(timing time.Duration, originName string) BlobTrace {
b := BlobTrace{}
b.Stacks = append(b.Stacks, BlobStack{
Timing: timing,
OriginName: originName,
HostName: getHostName(),
})
return b
}
func (b BlobTrace) String() string {
var fullTrace string
for i, stack := range b.Stacks {
delta := time.Duration(0)
if i > 0 {
delta = stack.Timing - b.Stacks[i-1].Timing
}
fullTrace += fmt.Sprintf("[%d](%s) origin: %s - timing: %s - delta: %s\n", i, stack.HostName, stack.OriginName, stack.Timing.String(), delta.String())
}
return fullTrace
}
func (b BlobTrace) Serialize() (string, error) {
t, err := json.Marshal(b)
if err != nil {
return "", errors.Err(err)
}
return string(t), nil
}
func Deserialize(serializedData string) (*BlobTrace, error) {
var trace BlobTrace
err := json.Unmarshal([]byte(serializedData), &trace)
if err != nil {
return nil, errors.Err(err)
}
return &trace, nil
}

View file

@ -1,36 +0,0 @@
package shared
import (
"testing"
"time"
"github.com/lbryio/lbry.go/v2/extras/util"
"github.com/stretchr/testify/assert"
)
func TestBlobTrace_Serialize(t *testing.T) {
hostName = util.PtrToString("test_machine")
stack := NewBlobTrace(10*time.Second, "test")
stack.Stack(20*time.Second, "test2")
stack.Stack(30*time.Second, "test3")
serialized, err := stack.Serialize()
assert.NoError(t, err)
t.Log(serialized)
expected := "{\"stacks\":[{\"timing\":10000000000,\"origin_name\":\"test\",\"host_name\":\"test_machine\"},{\"timing\":20000000000,\"origin_name\":\"test2\",\"host_name\":\"test_machine\"},{\"timing\":30000000000,\"origin_name\":\"test3\",\"host_name\":\"test_machine\"}]}"
assert.Equal(t, expected, serialized)
}
func TestBlobTrace_Deserialize(t *testing.T) {
hostName = util.PtrToString("test_machine")
serialized := "{\"stacks\":[{\"timing\":10000000000,\"origin_name\":\"test\"},{\"timing\":20000000000,\"origin_name\":\"test2\"},{\"timing\":30000000000,\"origin_name\":\"test3\"}]}"
stack, err := Deserialize(serialized)
assert.NoError(t, err)
assert.Len(t, stack.Stacks, 3)
assert.Equal(t, stack.Stacks[0].Timing, 10*time.Second)
assert.Equal(t, stack.Stacks[1].Timing, 20*time.Second)
assert.Equal(t, stack.Stacks[2].Timing, 30*time.Second)
assert.Equal(t, stack.Stacks[0].OriginName, "test")
assert.Equal(t, stack.Stacks[1].OriginName, "test2")
assert.Equal(t, stack.Stacks[2].OriginName, "test3")
}

View file

@ -1,18 +0,0 @@
//go:build linux
// +build linux
package store
import (
"os"
"syscall"
"time"
)
func timespecToTime(ts syscall.Timespec) time.Time {
return time.Unix(ts.Sec, ts.Nsec)
}
func atime(fi os.FileInfo) time.Time {
return timespecToTime(fi.Sys().(*syscall.Stat_t).Atim)
}

View file

@ -1,12 +0,0 @@
// +build !linux
package store
import (
"os"
"time"
)
func atime(fi os.FileInfo) time.Time {
return fi.ModTime()
}

View file

@ -1,107 +0,0 @@
package store
import (
"time"
"github.com/lbryio/reflector.go/internal/metrics"
"github.com/lbryio/reflector.go/shared"
"github.com/lbryio/lbry.go/v2/extras/errors"
"github.com/lbryio/lbry.go/v2/stream"
log "github.com/sirupsen/logrus"
)
// CachingStore combines two stores, typically a local and a remote store, to improve performance.
// Accessed blobs are stored in and retrieved from the cache. If they are not in the cache, they
// are retrieved from the origin and cached. Puts are cached and also forwarded to the origin.
type CachingStore struct {
origin, cache BlobStore
component string
}
// NewCachingStore makes a new caching disk store and returns a pointer to it.
func NewCachingStore(component string, origin, cache BlobStore) *CachingStore {
return &CachingStore{
component: component,
origin: WithSingleFlight(component, origin),
cache: WithSingleFlight(component, cache),
}
}
const nameCaching = "caching"
// Name is the cache type name
func (c *CachingStore) Name() string { return nameCaching }
// Has checks the cache and then the origin for a hash. It returns true if either store has it.
func (c *CachingStore) Has(hash string) (bool, error) {
has, err := c.cache.Has(hash)
if has || err != nil {
return has, err
}
return c.origin.Has(hash)
}
// Get tries to get the blob from the cache first, falling back to the origin. If the blob comes
// from the origin, it is also stored in the cache.
func (c *CachingStore) Get(hash string) (stream.Blob, shared.BlobTrace, error) {
start := time.Now()
blob, trace, err := c.cache.Get(hash)
if err == nil || !errors.Is(err, ErrBlobNotFound) {
metrics.CacheHitCount.With(metrics.CacheLabels(c.cache.Name(), c.component)).Inc()
rate := float64(len(blob)) / 1024 / 1024 / time.Since(start).Seconds()
metrics.CacheRetrievalSpeed.With(map[string]string{
metrics.LabelCacheType: c.cache.Name(),
metrics.LabelComponent: c.component,
metrics.LabelSource: "cache",
}).Set(rate)
return blob, trace.Stack(time.Since(start), c.Name()), err
}
metrics.CacheMissCount.With(metrics.CacheLabels(c.cache.Name(), c.component)).Inc()
blob, trace, err = c.origin.Get(hash)
if err != nil {
return nil, trace.Stack(time.Since(start), c.Name()), err
}
// do not do this async unless you're prepared to deal with mayhem
err = c.cache.Put(hash, blob)
if err != nil {
log.Errorf("error saving blob to underlying cache: %s", errors.FullTrace(err))
}
return blob, trace.Stack(time.Since(start), c.Name()), nil
}
// Put stores the blob in the origin and the cache
func (c *CachingStore) Put(hash string, blob stream.Blob) error {
err := c.origin.Put(hash, blob)
if err != nil {
return err
}
return c.cache.Put(hash, blob)
}
// PutSD stores the sd blob in the origin and the cache
func (c *CachingStore) PutSD(hash string, blob stream.Blob) error {
err := c.origin.PutSD(hash, blob)
if err != nil {
return err
}
return c.cache.PutSD(hash, blob)
}
// Delete deletes the blob from the origin and the cache
func (c *CachingStore) Delete(hash string) error {
err := c.origin.Delete(hash)
if err != nil {
return err
}
return c.cache.Delete(hash)
}
// Shutdown shuts down the store gracefully
func (c *CachingStore) Shutdown() {
c.origin.Shutdown()
c.cache.Shutdown()
}

View file

@ -1,179 +0,0 @@
package store
import (
"bytes"
"sync"
"testing"
"time"
"github.com/lbryio/reflector.go/shared"
"github.com/lbryio/lbry.go/v2/stream"
"github.com/sirupsen/logrus"
)
func TestCachingStore_Put(t *testing.T) {
origin := NewMemStore()
cache := NewMemStore()
s := NewCachingStore("test", origin, cache)
b := []byte("this is a blob of stuff")
hash := "hash"
err := s.Put(hash, b)
if err != nil {
t.Fatal(err)
}
has, err := origin.Has(hash)
if err != nil {
t.Fatal(err)
}
if !has {
t.Errorf("failed to store blob in origin")
}
has, err = cache.Has(hash)
if err != nil {
t.Fatal(err)
}
if !has {
t.Errorf("failed to store blob in cache")
}
}
func TestCachingStore_CacheMiss(t *testing.T) {
origin := NewMemStore()
cache := NewMemStore()
s := NewCachingStore("test", origin, cache)
b := []byte("this is a blob of stuff")
hash := "hash"
err := origin.Put(hash, b)
if err != nil {
t.Fatal(err)
}
res, stack, err := s.Get(hash)
if err != nil {
t.Fatal(err)
}
if !bytes.Equal(b, res) {
t.Errorf("expected Get() to return %s, got %s", string(b), string(res))
}
time.Sleep(10 * time.Millisecond) //storing to cache is done async so let's give it some time
has, err := cache.Has(hash)
if err != nil {
t.Fatal(err)
}
if !has {
t.Errorf("Get() did not copy blob to cache")
}
t.Logf("stack: %s", stack.String())
res, stack, err = cache.Get(hash)
if err != nil {
t.Fatal(err)
}
if !bytes.Equal(b, res) {
t.Errorf("expected cached Get() to return %s, got %s", string(b), string(res))
}
t.Logf("stack: %s", stack.String())
}
func TestCachingStore_ThunderingHerd(t *testing.T) {
storeDelay := 100 * time.Millisecond
origin := NewSlowBlobStore(storeDelay)
cache := NewMemStore()
s := NewCachingStore("test", origin, cache)
b := []byte("this is a blob of stuff")
hash := "hash"
err := origin.Put(hash, b)
if err != nil {
t.Fatal(err)
}
wg := &sync.WaitGroup{}
getNoErr := func() {
res, _, err := s.Get(hash)
if err != nil {
logrus.Fatal(err)
}
if !bytes.Equal(b, res) {
t.Errorf("expected Get() to return %s, got %s", string(b), string(res))
}
wg.Done()
}
start := time.Now()
wg.Add(4)
go func() {
go getNoErr()
time.Sleep(10 * time.Millisecond)
go getNoErr()
time.Sleep(10 * time.Millisecond)
go getNoErr()
time.Sleep(10 * time.Millisecond)
go getNoErr()
}()
wg.Wait()
duration := time.Since(start)
// only the first getNoErr() should hit the origin. the rest should wait for the first request to return
// once the first returns, the others should return immediately
// therefore, if the delay much longer than 100ms, it means subsequent requests also went to the origin
expectedMaxDelay := storeDelay + 5*time.Millisecond // a bit of extra time to let requests finish
if duration > expectedMaxDelay {
t.Errorf("Expected delay of at most %s, got %s", expectedMaxDelay, duration)
}
}
// SlowBlobStore adds a delay to each request
type SlowBlobStore struct {
mem *MemStore
delay time.Duration
}
func NewSlowBlobStore(delay time.Duration) *SlowBlobStore {
return &SlowBlobStore{
mem: NewMemStore(),
delay: delay,
}
}
func (s *SlowBlobStore) Name() string {
return "slow"
}
func (s *SlowBlobStore) Has(hash string) (bool, error) {
time.Sleep(s.delay)
return s.mem.Has(hash)
}
func (s *SlowBlobStore) Get(hash string) (stream.Blob, shared.BlobTrace, error) {
time.Sleep(s.delay)
return s.mem.Get(hash)
}
func (s *SlowBlobStore) Put(hash string, blob stream.Blob) error {
time.Sleep(s.delay)
return s.mem.Put(hash, blob)
}
func (s *SlowBlobStore) PutSD(hash string, blob stream.Blob) error {
time.Sleep(s.delay)
return s.mem.PutSD(hash, blob)
}
func (s *SlowBlobStore) Delete(hash string) error {
time.Sleep(s.delay)
return s.mem.Delete(hash)
}
func (s *SlowBlobStore) Shutdown() {
return
}

View file

@ -1,108 +0,0 @@
package store
import (
"io"
"net/http"
"time"
"github.com/lbryio/reflector.go/internal/metrics"
"github.com/lbryio/reflector.go/meta"
"github.com/lbryio/reflector.go/shared"
"github.com/lbryio/lbry.go/v2/extras/errors"
"github.com/lbryio/lbry.go/v2/stream"
log "github.com/sirupsen/logrus"
)
// CloudFrontROStore reads from cloudfront. All writes panic.
type CloudFrontROStore struct {
endpoint string // cloudflare endpoint
}
// NewCloudFrontROStore returns an initialized CloudFrontROStore store pointer.
func NewCloudFrontROStore(endpoint string) *CloudFrontROStore {
return &CloudFrontROStore{endpoint: endpoint}
}
const nameCloudFrontRO = "cloudfront_ro"
// Name is the cache type name
func (c *CloudFrontROStore) Name() string { return nameCloudFrontRO }
// Has checks if the hash is in the store.
func (c *CloudFrontROStore) Has(hash string) (bool, error) {
status, body, err := c.cfRequest(http.MethodHead, hash)
if err != nil {
return false, err
}
defer func() { _ = body.Close() }()
switch status {
case http.StatusNotFound, http.StatusForbidden:
return false, nil
case http.StatusOK:
return true, nil
default:
return false, errors.Err("unexpected status %d", status)
}
}
// Get gets the blob from Cloudfront.
func (c *CloudFrontROStore) Get(hash string) (stream.Blob, shared.BlobTrace, error) {
log.Debugf("Getting %s from S3", hash[:8])
start := time.Now()
defer func(t time.Time) {
log.Debugf("Getting %s from S3 took %s", hash[:8], time.Since(t).String())
}(start)
status, body, err := c.cfRequest(http.MethodGet, hash)
if err != nil {
return nil, shared.NewBlobTrace(time.Since(start), c.Name()), err
}
defer func() { _ = body.Close() }()
switch status {
case http.StatusNotFound, http.StatusForbidden:
return nil, shared.NewBlobTrace(time.Since(start), c.Name()), errors.Err(ErrBlobNotFound)
case http.StatusOK:
b, err := io.ReadAll(body)
if err != nil {
return nil, shared.NewBlobTrace(time.Since(start), c.Name()), errors.Err(err)
}
metrics.MtrInBytesS3.Add(float64(len(b)))
return b, shared.NewBlobTrace(time.Since(start), c.Name()), nil
default:
return nil, shared.NewBlobTrace(time.Since(start), c.Name()), errors.Err("unexpected status %d", status)
}
}
func (c *CloudFrontROStore) cfRequest(method, hash string) (int, io.ReadCloser, error) {
url := c.endpoint + hash
req, err := http.NewRequest(method, url, nil)
if err != nil {
return 0, nil, errors.Err(err)
}
req.Header.Add("User-Agent", "reflector.go/"+meta.Version())
res, err := http.DefaultClient.Do(req)
if err != nil {
return 0, nil, errors.Err(err)
}
return res.StatusCode, res.Body, nil
}
func (c *CloudFrontROStore) Put(_ string, _ stream.Blob) error {
return errors.Err(shared.ErrNotImplemented)
}
func (c *CloudFrontROStore) PutSD(_ string, _ stream.Blob) error {
return errors.Err(shared.ErrNotImplemented)
}
func (c *CloudFrontROStore) Delete(_ string) error {
return errors.Err(shared.ErrNotImplemented)
}
// Shutdown shuts down the store gracefully
func (c *CloudFrontROStore) Shutdown() {
}

View file

@ -1,62 +0,0 @@
package store
import (
"time"
"github.com/lbryio/reflector.go/shared"
"github.com/lbryio/lbry.go/v2/stream"
)
// CloudFrontRWStore combines a Cloudfront and an S3 store. Reads go to Cloudfront/Wasabi, writes go to S3.
type CloudFrontRWStore struct {
cf *ITTTStore
s3 *S3Store
}
// NewCloudFrontRWStore returns an initialized CloudFrontRWStore store pointer.
// NOTE: It panics if either argument is nil.
func NewCloudFrontRWStore(cf *ITTTStore, s3 *S3Store) *CloudFrontRWStore {
if cf == nil || s3 == nil {
panic("both stores must be set")
}
return &CloudFrontRWStore{cf: cf, s3: s3}
}
const nameCloudFrontRW = "cloudfront_rw"
// Name is the cache type name
func (c *CloudFrontRWStore) Name() string { return nameCloudFrontRW }
// Has checks if the hash is in the store.
func (c *CloudFrontRWStore) Has(hash string) (bool, error) {
return c.cf.Has(hash)
}
// Get gets the blob from Cloudfront.
func (c *CloudFrontRWStore) Get(hash string) (stream.Blob, shared.BlobTrace, error) {
start := time.Now()
blob, trace, err := c.cf.Get(hash)
return blob, trace.Stack(time.Since(start), c.Name()), err
}
// Put stores the blob on S3
func (c *CloudFrontRWStore) Put(hash string, blob stream.Blob) error {
return c.s3.Put(hash, blob)
}
// PutSD stores the sd blob on S3
func (c *CloudFrontRWStore) PutSD(hash string, blob stream.Blob) error {
return c.s3.PutSD(hash, blob)
}
// Delete deletes the blob from S3
func (c *CloudFrontRWStore) Delete(hash string) error {
return c.s3.Delete(hash)
}
// Shutdown shuts down the store gracefully
func (c *CloudFrontRWStore) Shutdown() {
c.s3.Shutdown()
c.cf.Shutdown()
}

View file

@ -2,67 +2,35 @@ package store
import (
"encoding/json"
"sync"
"time"
"github.com/lbryio/lbry.go/errors"
"github.com/lbryio/reflector.go/db"
"github.com/lbryio/reflector.go/shared"
"github.com/lbryio/lbry.go/v2/extras/errors"
"github.com/lbryio/lbry.go/v2/stream"
log "github.com/sirupsen/logrus"
)
// DBBackedStore is a store that's backed by a DB. The DB contains data about what's in the store.
type DBBackedStore struct {
blobs BlobStore
db *db.SQL
blockedMu sync.RWMutex
blocked map[string]bool
deleteOnMiss bool
// DBBackedS3Store is an instance of an S3 Store that is backed by a DB for what is stored.
type DBBackedS3Store struct {
s3 *S3BlobStore
db *db.SQL
}
// NewDBBackedStore returns an initialized store pointer.
func NewDBBackedStore(blobs BlobStore, db *db.SQL, deleteOnMiss bool) *DBBackedStore {
return &DBBackedStore{blobs: blobs, db: db, deleteOnMiss: deleteOnMiss}
// NewDBBackedS3Store returns an initialized store pointer.
func NewDBBackedS3Store(s3 *S3BlobStore, db *db.SQL) *DBBackedS3Store {
return &DBBackedS3Store{s3: s3, db: db}
}
const nameDBBacked = "db-backed"
// Name is the cache type name
func (d *DBBackedStore) Name() string { return nameDBBacked }
// Has returns true if the blob is in the store
func (d *DBBackedStore) Has(hash string) (bool, error) {
return d.db.HasBlob(hash, false)
// Has returns T/F or Error ( if the DB errors ) if store contains the blob.
func (d *DBBackedS3Store) Has(hash string) (bool, error) {
return d.db.HasBlob(hash)
}
// Get gets the blob
func (d *DBBackedStore) Get(hash string) (stream.Blob, shared.BlobTrace, error) {
start := time.Now()
has, err := d.db.HasBlob(hash, true)
if err != nil {
return nil, shared.NewBlobTrace(time.Since(start), d.Name()), err
}
if !has {
return nil, shared.NewBlobTrace(time.Since(start), d.Name()), ErrBlobNotFound
}
b, stack, err := d.blobs.Get(hash)
if d.deleteOnMiss && errors.Is(err, ErrBlobNotFound) {
e2 := d.Delete(hash)
if e2 != nil {
log.Errorf("error while deleting blob from db: %s", errors.FullTrace(err))
}
}
return b, stack.Stack(time.Since(start), d.Name()), err
// Get returns the byte slice of the blob or an error.
func (d *DBBackedS3Store) Get(hash string) ([]byte, error) {
return d.s3.Get(hash)
}
// Put stores the blob in the S3 store and stores the blob information in the DB.
func (d *DBBackedStore) Put(hash string, blob stream.Blob) error {
err := d.blobs.Put(hash, blob)
func (d *DBBackedS3Store) Put(hash string, blob []byte) error {
err := d.s3.Put(hash, blob)
if err != nil {
return err
}
@ -72,17 +40,17 @@ func (d *DBBackedStore) Put(hash string, blob stream.Blob) error {
// PutSD stores the SDBlob in the S3 store. It will return an error if the sd blob is missing the stream hash or if
// there is an error storing the blob information in the DB.
func (d *DBBackedStore) PutSD(hash string, blob stream.Blob) error {
func (d *DBBackedS3Store) PutSD(hash string, blob []byte) error {
var blobContents db.SdBlob
err := json.Unmarshal(blob, &blobContents)
if err != nil {
return errors.Err(err)
return err
}
if blobContents.StreamHash == "" {
return errors.Err("sd blob is missing stream hash")
}
err = d.blobs.PutSD(hash, blob)
err = d.s3.PutSD(hash, blob)
if err != nil {
return err
}
@ -90,112 +58,7 @@ func (d *DBBackedStore) PutSD(hash string, blob stream.Blob) error {
return d.db.AddSDBlob(hash, len(blob), blobContents)
}
func (d *DBBackedStore) Delete(hash string) error {
err := d.blobs.Delete(hash)
if err != nil {
return err
}
return d.db.Delete(hash)
}
// Block deletes the blob and prevents it from being uploaded in the future
func (d *DBBackedStore) Block(hash string) error {
if blocked, err := d.isBlocked(hash); blocked || err != nil {
return err
}
log.Debugf("blocking %s", hash)
err := d.db.Block(hash)
if err != nil {
return err
}
//has, err := d.db.HasBlob(hash, false)
//if err != nil {
// return err
//}
//
//if has {
// err = d.blobs.Delete(hash)
// if err != nil {
// return err
// }
//
// err = d.db.Delete(hash)
// if err != nil {
// return err
// }
//}
return d.markBlocked(hash)
}
// Wants returns false if the hash exists or is blocked, true otherwise
func (d *DBBackedStore) Wants(hash string) (bool, error) {
blocked, err := d.isBlocked(hash)
if blocked || err != nil {
return false, err
}
has, err := d.Has(hash)
return !has, err
}
// MissingBlobsForKnownStream returns missing blobs for an existing stream
// WARNING: if the stream does NOT exist, no blob hashes will be returned, which looks
// like no blobs are missing
func (d *DBBackedStore) MissingBlobsForKnownStream(sdHash string) ([]string, error) {
return d.db.MissingBlobsForKnownStream(sdHash)
}
func (d *DBBackedStore) markBlocked(hash string) error {
err := d.initBlocked()
if err != nil {
return err
}
d.blockedMu.Lock()
defer d.blockedMu.Unlock()
d.blocked[hash] = true
return nil
}
func (d *DBBackedStore) isBlocked(hash string) (bool, error) {
err := d.initBlocked()
if err != nil {
return false, err
}
d.blockedMu.RLock()
defer d.blockedMu.RUnlock()
return d.blocked[hash], nil
}
func (d *DBBackedStore) initBlocked() error {
// first check without blocking since this is the most likely scenario
if d.blocked != nil {
return nil
}
d.blockedMu.Lock()
defer d.blockedMu.Unlock()
// check again in case of race condition
if d.blocked != nil {
return nil
}
var err error
d.blocked, err = d.db.GetBlocked()
return err
}
// Shutdown shuts down the store gracefully
func (d *DBBackedStore) Shutdown() {
d.blobs.Shutdown()
// HasFullStream checks if the full stream has been uploaded (i.e. if we have the sd blob and all the content blobs)
func (d *DBBackedS3Store) HasFullStream(sdHash string) (bool, error) {
return d.db.HasFullStream(sdHash)
}

View file

@ -1,146 +0,0 @@
package store
import (
"os"
"path"
"time"
"github.com/lbryio/reflector.go/shared"
"github.com/lbryio/reflector.go/store/speedwalk"
"github.com/lbryio/lbry.go/v2/extras/errors"
"github.com/lbryio/lbry.go/v2/stream"
)
// DiskStore stores blobs on a local disk
type DiskStore struct {
// the location of blobs on disk
blobDir string
// store files in subdirectories based on the first N chars in the filename. 0 = don't create subdirectories.
prefixLength int
// true if initOnce ran, false otherwise
initialized bool
}
// NewDiskStore returns an initialized file disk store pointer.
func NewDiskStore(dir string, prefixLength int) *DiskStore {
return &DiskStore{
blobDir: dir,
prefixLength: prefixLength,
}
}
const nameDisk = "disk"
// Name is the cache type name
func (d *DiskStore) Name() string { return nameDisk }
// Has returns T/F or Error if it the blob stored already. It will error with any IO disk error.
func (d *DiskStore) Has(hash string) (bool, error) {
err := d.initOnce()
if err != nil {
return false, err
}
_, err = os.Stat(d.path(hash))
if err != nil {
if os.IsNotExist(err) {
return false, nil
}
return false, errors.Err(err)
}
return true, nil
}
// Get returns the blob or an error if the blob doesn't exist.
func (d *DiskStore) Get(hash string) (stream.Blob, shared.BlobTrace, error) {
start := time.Now()
err := d.initOnce()
if err != nil {
return nil, shared.NewBlobTrace(time.Since(start), d.Name()), err
}
blob, err := os.ReadFile(d.path(hash))
if err != nil {
if os.IsNotExist(err) {
return nil, shared.NewBlobTrace(time.Since(start), d.Name()), errors.Err(ErrBlobNotFound)
}
return nil, shared.NewBlobTrace(time.Since(start), d.Name()), errors.Err(err)
}
return blob, shared.NewBlobTrace(time.Since(start), d.Name()), nil
}
// PutSD stores the sd blob on the disk
func (d *DiskStore) PutSD(hash string, blob stream.Blob) error {
return d.Put(hash, blob)
}
// Delete deletes the blob from the store
func (d *DiskStore) Delete(hash string) error {
err := d.initOnce()
if err != nil {
return err
}
has, err := d.Has(hash)
if err != nil {
return err
}
if !has {
return nil
}
err = os.Remove(d.path(hash))
return errors.Err(err)
}
// list returns the hashes of blobs that already exist in the blobDir
func (d *DiskStore) list() ([]string, error) {
err := d.initOnce()
if err != nil {
return nil, err
}
return speedwalk.AllFiles(d.blobDir, true)
}
func (d *DiskStore) dir(hash string) string {
if d.prefixLength <= 0 || len(hash) < d.prefixLength {
return d.blobDir
}
return path.Join(d.blobDir, hash[:d.prefixLength])
}
func (d *DiskStore) tmpDir(hash string) string {
return path.Join(d.blobDir, "tmp")
}
func (d *DiskStore) path(hash string) string {
return path.Join(d.dir(hash), hash)
}
func (d *DiskStore) tmpPath(hash string) string {
return path.Join(d.tmpDir(hash), hash)
}
func (d *DiskStore) ensureDirExists(dir string) error {
return errors.Err(os.MkdirAll(dir, 0755))
}
func (d *DiskStore) initOnce() error {
if d.initialized {
return nil
}
err := d.ensureDirExists(d.blobDir)
if err != nil {
return err
}
err = d.ensureDirExists(path.Join(d.blobDir, "tmp"))
if err != nil {
return err
}
d.initialized = true
return nil
}
// Shutdown shuts down the store gracefully
func (d *DiskStore) Shutdown() {
}

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@ -1,44 +0,0 @@
package store
import (
"os"
"path"
"path/filepath"
"testing"
"github.com/lbryio/lbry.go/v2/extras/errors"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func TestDiskStore_Get(t *testing.T) {
tmpDir, err := os.MkdirTemp("", "reflector_test_*")
require.NoError(t, err)
defer func() { _ = os.RemoveAll(tmpDir) }()
d := NewDiskStore(tmpDir, 2)
hash := "f428b8265d65dad7f8ffa52922bba836404cbd62f3ecfe10adba6b444f8f658938e54f5981ac4de39644d5b93d89a94b"
data := []byte("oyuntyausntoyaunpdoyruoyduanrstjwfjyuwf")
expectedPath := path.Join(tmpDir, hash[:2], hash)
err = os.MkdirAll(filepath.Dir(expectedPath), os.ModePerm)
require.NoError(t, err)
err = os.WriteFile(expectedPath, data, os.ModePerm)
require.NoError(t, err)
blob, _, err := d.Get(hash)
assert.NoError(t, err)
assert.EqualValues(t, data, blob)
}
func TestDiskStore_GetNonexistentBlob(t *testing.T) {
tmpDir, err := os.MkdirTemp("", "reflector_test_*")
require.NoError(t, err)
defer func() { _ = os.RemoveAll(tmpDir) }()
d := NewDiskStore(tmpDir, 2)
blob, _, err := d.Get("nonexistent")
assert.Nil(t, blob)
assert.True(t, errors.Is(err, ErrBlobNotFound))
}

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@ -1,42 +0,0 @@
//go:build darwin
// +build darwin
package store
import (
"bytes"
"io"
"os"
"github.com/lbryio/lbry.go/v2/extras/errors"
"github.com/lbryio/lbry.go/v2/stream"
)
var openFileFlags = os.O_WRONLY | os.O_CREATE
// Put stores the blob on disk
func (d *DiskStore) Put(hash string, blob stream.Blob) error {
err := d.initOnce()
if err != nil {
return err
}
err = d.ensureDirExists(d.dir(hash))
if err != nil {
return err
}
// Open file with O_DIRECT
f, err := os.OpenFile(d.tmpPath(hash), openFileFlags, 0644)
if err != nil {
return errors.Err(err)
}
defer f.Close()
_, err = io.Copy(f, bytes.NewReader(blob))
if err != nil {
return errors.Err(err)
}
err = os.Rename(d.tmpPath(hash), d.path(hash))
return errors.Err(err)
}

View file

@ -1,49 +0,0 @@
//go:build linux
// +build linux
package store
import (
"bytes"
"io"
"os"
"syscall"
"github.com/lbryio/lbry.go/v2/extras/errors"
"github.com/lbryio/lbry.go/v2/stream"
"github.com/brk0v/directio"
)
var openFileFlags = os.O_WRONLY | os.O_CREATE | syscall.O_DIRECT
// Put stores the blob on disk
func (d *DiskStore) Put(hash string, blob stream.Blob) error {
err := d.initOnce()
if err != nil {
return err
}
err = d.ensureDirExists(d.dir(hash))
if err != nil {
return err
}
// Open file with O_DIRECT
f, err := os.OpenFile(d.tmpPath(hash), openFileFlags, 0644)
if err != nil {
return errors.Err(err)
}
defer func() { _ = f.Close() }()
dio, err := directio.New(f)
if err != nil {
return errors.Err(err)
}
defer func() { _ = dio.Flush() }()
_, err = io.Copy(dio, bytes.NewReader(blob))
if err != nil {
return errors.Err(err)
}
err = os.Rename(d.tmpPath(hash), d.path(hash))
return errors.Err(err)
}

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