import json import logging import os from datetime import datetime from twisted.internet import defer from twisted.internet.task import LoopingCall from lbrynet.core.Error import InvalidStreamInfoError, InsufficientFundsError from lbrynet.core.PaymentRateManager import PaymentRateManager from lbrynet.core.StreamDescriptor import download_sd_blob log = logging.getLogger(__name__) class AutoAddStream(object): def __init__(self, console, sd_identifier, session, wallet, lbry_file_manager, max_key_fee): self.finished_deferred = defer.Deferred(None) self.console = console self.wallet = wallet self.resolved_name = None self.description = None self.key_fee = None self.key_fee_address = None self.name = None self.session = session self.payment_rate_manager = PaymentRateManager(self.session.base_payment_rate_manager) self.loading_metadata_deferred = defer.Deferred() self.lbry_file_manager = lbry_file_manager self.sd_identifier = sd_identifier self.metadata = None self.loading_failed = False self.resolved_name = None self.description = None self.key_fee = None self.key_fee_address = None self.stream_hash = None self.max_key_fee = max_key_fee self.stream_info = None def start(self, stream_info): self.stream_info = stream_info if 'stream_hash' not in json.loads(self.stream_info['value']): print 'InvalidStreamInfoError' raise InvalidStreamInfoError(self.stream_info) self.resolved_name = self.stream_info.get('name', None) self.description = json.loads(self.stream_info['value']).get('description', None) try: if 'key_fee' in json.loads(self.stream_info['value']): self.key_fee = float(json.loads(self.stream_info['value'])['key_fee']) except ValueError: self.key_fee = None self.key_fee_address = json.loads(self.stream_info['value']).get('key_fee_address', None) self.stream_hash = json.loads(self.stream_info['value'])['stream_hash'] if self.key_fee > self.max_key_fee: pass # self.console.sendLine("Key fee (" + str(self.key_fee) + ") above limit of " + str( # self.max_key_fee) + ", didn't download lbry://" + str(self.resolved_name)) # return self.finished_deferred.callback(None) self.loading_metadata_deferred = defer.Deferred(None) self.loading_metadata_deferred.addCallback( lambda _: download_sd_blob(self.session, self.stream_hash, self.payment_rate_manager)) self.loading_metadata_deferred.addCallback(self.sd_identifier.get_metadata_for_sd_blob) self.loading_metadata_deferred.addCallback(self._handle_metadata) self.loading_metadata_deferred.addErrback(self._handle_load_canceled) self.loading_metadata_deferred.addErrback(self._handle_load_failed) self.finished_deferred.addCallback(lambda _: self.loading_metadata_deferred.callback(None)) return self.finished_deferred.callback(None) def _start_download(self): #d = self._pay_key_fee() d = defer.Deferred(None) d.addCallback(lambda _: self._make_downloader()) d.addCallback(lambda stream_downloader: stream_downloader.start()) d.addErrback(self._handle_download_error) return d def _pay_key_fee(self): if self.key_fee is not None and self.key_fee_address is not None: reserved_points = self.wallet.reserve_points(self.key_fee_address, self.key_fee) if reserved_points is None: return defer.fail(InsufficientFundsError()) return self.wallet.send_points_to_address(reserved_points, self.key_fee) self.console.sendLine("Sent key fee" + str(self.key_fee_address) + " | " + str(self.key_fee)) return defer.succeed(None) def _handle_load_canceled(self, err): err.trap(defer.CancelledError) self.finished_deferred.callback(None) def _handle_load_failed(self, err): self.loading_failed = True self.console.sendLine("handle load failed: " + str(err.getTraceback())) log.error("An exception occurred attempting to load the stream descriptor: %s", err.getTraceback()) self.finished_deferred.callback(None) def _handle_metadata(self, metadata): self.metadata = metadata self.factory = self.metadata.factories[0] self.finished_deferred.addCallback(lambda _: self._start_download()) def _handle_download_error(self, err): if err.check(InsufficientFundsError): self.console.sendLine("Download stopped due to insufficient funds.") else: self.console.sendLine( "Autoaddstream: An unexpected error has caused the download to stop: %s" % err.getTraceback()) def _make_downloader(self): self.downloader = self.factory.make_downloader(self.metadata, [0.5, True], self.payment_rate_manager) return self.downloader class AutoFetcher(object): def __init__(self, session, lbry_file_manager, lbry_file_metadata_manager, wallet, sd_identifier, autofetcher_conf): self.autofetcher_conf = autofetcher_conf self.max_key_fee = 0.0 self.console = None self.sd_identifier = sd_identifier self.wallet = wallet self.session = session self.lbry_file_manager = lbry_file_manager self.lbry_metadata_manager = lbry_file_metadata_manager self.seen = [] self.lastbestblock = None self.rpc_conn = self.wallet.get_rpc_conn_x() self.search = None self.first_run = True self.is_running = False self._get_autofetcher_conf() def start(self, console): # TODO first search through the nametrie before monitoring live updates # TODO load previously downloaded streams self.console = console if not self.is_running: self.is_running = True self.search = LoopingCall(self._looped_search) self.search.start(1) else: self.console.sendLine("Autofetcher is already running") def stop(self, console): self.console = console if self.is_running: self.search.stop() self.is_running = False else: self.console.sendLine("Autofetcher isn't running, there's nothing to stop") def check_if_running(self, console): self.console = console if self.is_running: self.console.sendLine("Autofetcher is running") self.console.sendLine("Last block hash: " + str(self.lastbestblock['bestblockhash'])) else: self.console.sendLine("Autofetcher is not running") def _get_names(self): c = self.rpc_conn.getblockchaininfo() rtn = [] if self.lastbestblock != c: block = self.rpc_conn.getblock(c['bestblockhash']) txids = block['tx'] transactions = [self.rpc_conn.decoderawtransaction(self.rpc_conn.getrawtransaction(t)) for t in txids] for t in transactions: claims = self.rpc_conn.getclaimsfortx(t['txid']) # if self.first_run: # #claims = self.rpc_conn.getclaimsfortx("96aca2c60efded5806b7336430c5987b9092ffbea9c6ed444e3bf8e008993e11") # claims = self.rpc_conn.getclaimsfortx("cc9c7f5225ecb38877e6ca7574d110b23214ac3556b9d65784065ad3a85b4f74") # self.first_run = False if claims: for claim in claims: if claim not in self.seen: self.console.sendLine("lbry://" + str(claim['name']) + " | stream hash: " + str(json.loads(claim['value'])['stream_hash'])) rtn.append(claim) self.seen.append(claim) else: # self.console.sendLine("No new claims in block #" + str(block['height'])) pass self.lastbestblock = c if len(rtn): return defer.succeed(rtn) def _download_claims(self, claims): if claims: for claim in claims: download = defer.Deferred() stream = AutoAddStream(self.console, self.sd_identifier, self.session, self.wallet, self.lbry_file_manager, self.max_key_fee) download.addCallback(lambda _: stream.start(claim)) download.callback(None) return defer.succeed(None) def _looped_search(self): d = defer.Deferred(None) d.addCallback(lambda _: self._get_names()) d.addCallback(self._download_claims) d.callback(None) def _get_autofetcher_conf(self): settings = {"maxkey": "0.0"} if os.path.exists(self.autofetcher_conf): conf = open(self.autofetcher_conf) for l in conf: if l.startswith("maxkey="): settings["maxkey"] = float(l[7:].rstrip('\n')) else: print "Autofetcher using default max key price of 0.0" print "To change this create the file:" print str(self.autofetcher_conf) print "Example contents of conf file:" print "maxkey=1.0" self.max_key_fee = settings["maxkey"]