forked from LBRYCommunity/lbry-sdk
52 lines
1.9 KiB
Python
52 lines
1.9 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 _: 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", uri)
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log.debug("Traceback: %s", err.getTraceback())
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def check_and_restore_availability(lbry_file, reflector_server):
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d = _check_if_reflector_has_stream(lbry_file, reflector_server)
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d.addCallbacks(
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lambda send_stream: _reflect_if_unavailable(send_stream, lbry_file, reflector_server),
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lambda err: _catch_error(err, lbry_file.uri))
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return d
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