Madiator2011/lbry-sdk
1
0
Fork 0
forked from LBRYCommunity/lbry-sdk
Code Pull requests Activity

fix request_blob cancellation

Browse source
This commit is contained in:
Jack Robison 2019-02-04 16:03:08 -05:00
parent ad30b7df6d
commit 377442d9f0
No known key found for this signature in database
GPG key ID: DF25C68FE0239BB2
1 changed files with 22 additions and 23 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

45
lbrynet/blob_exchange/downloader.py
View file

@ -29,28 +29,22 @@ class BlobDownloader:
self.ignored: typing.Set['KademliaPeer'] = set()
self.scores: typing.Dict['KademliaPeer', int] = {}
def request_blob_from_peer(self, blob: 'BlobFile', peer: 'KademliaPeer'):
async def _request_blob():
if blob.get_is_verified():
return
try:
success, keep_connection = await request_blob(
self.loop, blob, peer.address, peer.tcp_port, self.config.peer_connect_timeout,
self.config.blob_download_timeout
)
finally:
if peer in self.active_connections:
self.active_connections.pop(peer)
if not keep_connection and peer not in self.ignored:
self.ignored.add(peer)
log.debug("drop peer %s:%i", peer.address, peer.tcp_port)
elif keep_connection:
log.debug("keep peer %s:%i", peer.address, peer.tcp_port)
if success:
self.scores[peer] = self.scores.get(peer, 0) + 2
else:
self.scores[peer] = self.scores.get(peer, 0) - 1
return self.loop.create_task(_request_blob())
async def request_blob_from_peer(self, blob: 'BlobFile', peer: 'KademliaPeer'):
if blob.get_is_verified():
return
success, keep_connection = await request_blob(
self.loop, blob, peer.address, peer.tcp_port, self.config.peer_connect_timeout,
self.config.blob_download_timeout
)
if not keep_connection and peer not in self.ignored:
self.ignored.add(peer)
log.debug("drop peer %s:%i", peer.address, peer.tcp_port)
elif keep_connection:
log.debug("keep peer %s:%i", peer.address, peer.tcp_port)
if success:
self.scores[peer] = self.scores.get(peer, 0) + 2
else:
self.scores[peer] = self.scores.get(peer, 0) - 1
async def new_peer_or_finished(self, blob: 'BlobFile'):
async def get_and_re_add_peers():
@ -77,7 +71,12 @@ class BlobDownloader:
break
if peer not in self.active_connections and peer not in self.ignored:
log.debug("request %s from %s:%i", blob_hash[:8], peer.address, peer.tcp_port)
self.active_connections[peer] = self.request_blob_from_peer(blob, peer)
t = self.loop.create_task(self.request_blob_from_peer(blob, peer))
self.active_connections[peer] = t
t.add_done_callback(
lambda _:
None if peer not in self.active_connections else self.active_connections.pop(peer)
)
await self.new_peer_or_finished(blob)
to_re_add = list(set(filter(lambda peer: peer not in self.ignored, batch)))
to_re_add.sort(key=lambda peer: self.scores.get(peer, 0), reverse=True)