From f8c0e80cfc4011071ad4f3e8a7b590cf8520e85f Mon Sep 17 00:00:00 2001
From: Jack Robison <jackrobison@lbry.io>
Date: Wed, 1 May 2019 14:23:16 -0400
Subject: [PATCH] add __slots__ to BlobInfo, StreamDescriptor, and KademliaPeer

---
 lbrynet/blob/blob_info.py    |  7 +++++++
 lbrynet/dht/peer.py          |  9 +++++++++
 lbrynet/stream/descriptor.py | 11 +++++++++++
 3 files changed, 27 insertions(+)

diff --git a/lbrynet/blob/blob_info.py b/lbrynet/blob/blob_info.py
index d300fd905..febfdcb65 100644
--- a/lbrynet/blob/blob_info.py
+++ b/lbrynet/blob/blob_info.py
@@ -2,6 +2,13 @@ import typing
 
 
 class BlobInfo:
+    __slots__ = [
+        'blob_hash',
+        'blob_num',
+        'length',
+        'iv',
+    ]
+
     def __init__(self, blob_num: int, length: int, iv: str, blob_hash: typing.Optional[str] = None):
         self.blob_hash = blob_hash
         self.blob_num = blob_num
diff --git a/lbrynet/dht/peer.py b/lbrynet/dht/peer.py
index 9c8176eb5..23bc29635 100644
--- a/lbrynet/dht/peer.py
+++ b/lbrynet/dht/peer.py
@@ -135,6 +135,15 @@ class PeerManager:
 
 
 class KademliaPeer:
+    __slots__ = [
+        'loop',
+        '_node_id',
+        'address',
+        'udp_port',
+        'tcp_port',
+        'protocol_version',
+    ]
+
     def __init__(self, loop: asyncio.BaseEventLoop, address: str, node_id: typing.Optional[bytes] = None,
                  udp_port: typing.Optional[int] = None, tcp_port: typing.Optional[int] = None):
         if node_id is not None:
diff --git a/lbrynet/stream/descriptor.py b/lbrynet/stream/descriptor.py
index a2f4d1da2..2b0527d35 100644
--- a/lbrynet/stream/descriptor.py
+++ b/lbrynet/stream/descriptor.py
@@ -47,6 +47,17 @@ def file_reader(file_path: str):
 
 
 class StreamDescriptor:
+    __slots__ = [
+        'loop',
+        'blob_dir',
+        'stream_name',
+        'key',
+        'suggested_file_name',
+        'blobs',
+        'stream_hash',
+        'sd_hash'
+    ]
+
     def __init__(self, loop: asyncio.BaseEventLoop, blob_dir: str, stream_name: str, key: str,
                  suggested_file_name: str, blobs: typing.List[BlobInfo], stream_hash: typing.Optional[str] = None,
                  sd_hash: typing.Optional[str] = None):