forked from LBRYCommunity/lbry-sdk
5fa2dfeca7
previously only the sd blob was reflected, if the server indicated it needed the blob then the rest of the stream would follow. this allowed for many streams to be partially reflected, where for whatever reason the connection was broken before the full upload was completed. this meant that on a subsequent run, the client would falsely believe reflector had the whole stream when it actually only had some portion of it. this solution isn’t ideal, I’m most of the way done with a better one, but this can be deployed now.
51 lines
1.8 KiB
Python
51 lines
1.8 KiB
Python
import logging
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from twisted.internet import reactor, defer
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from lbrynet.reflector import BlobClientFactory, ClientFactory
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log = logging.getLogger(__name__)
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def _check_if_reflector_has_stream(lbry_file, reflector_server):
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reflector_address, reflector_port = reflector_server[0], reflector_server[1]
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factory = BlobClientFactory(
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lbry_file.blob_manager,
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[lbry_file.sd_hash]
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)
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d = reactor.resolve(reflector_address)
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d.addCallback(lambda ip: reactor.connectTCP(ip, reflector_port, factory))
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d.addCallback(lambda _: factory.finished_deferred)
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d.addCallback(lambda _: not factory.sent_blobs)
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return d
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def _reflect_stream(lbry_file, reflector_server):
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reflector_address, reflector_port = reflector_server[0], reflector_server[1]
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factory = ClientFactory(
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lbry_file.blob_manager,
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lbry_file.stream_info_manager,
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lbry_file.stream_hash
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)
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d = reactor.resolve(reflector_address)
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d.addCallback(lambda ip: reactor.connectTCP(ip, reflector_port, factory))
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d.addCallback(lambda _: log.info("Connected to %s", reflector_address))
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d.addCallback(lambda _: factory.finished_deferred)
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return d
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def _reflect_if_unavailable(reflector_has_stream, lbry_file, reflector_server):
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if reflector_has_stream:
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log.info("lbry://%s is available", lbry_file.uri)
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return defer.succeed(False)
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log.info("lbry://%s is unavailable, reflecting it", lbry_file.uri)
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return _reflect_stream(lbry_file, reflector_server)
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def _catch_error(err, uri):
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log.error("An error occurred while checking availability for lbry://%s: %s", uri, err.getTraceback())
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def check_and_restore_availability(lbry_file, reflector_server):
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d = _reflect_stream(lbry_file, reflector_server)
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d.addErrback(_catch_error, lbry_file.uri)
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return d
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