53 lines
1.9 KiB
Python
53 lines
1.9 KiB
Python
import logging
|
|
from twisted.internet import reactor, defer
|
|
from lbrynet.reflector import BlobClientFactory, ClientFactory
|
|
|
|
log = logging.getLogger(__name__)
|
|
|
|
|
|
def _check_if_reflector_has_stream(lbry_file, reflector_server):
|
|
reflector_address, reflector_port = reflector_server[0], reflector_server[1]
|
|
factory = BlobClientFactory(
|
|
lbry_file.blob_manager,
|
|
[lbry_file.sd_hash]
|
|
)
|
|
d = reactor.resolve(reflector_address)
|
|
d.addCallback(lambda ip: reactor.connectTCP(ip, reflector_port, factory))
|
|
d.addCallback(lambda _: factory.finished_deferred)
|
|
d.addCallback(lambda _: not factory.sent_blobs)
|
|
return d
|
|
|
|
|
|
def _reflect_stream(lbry_file, reflector_server):
|
|
reflector_address, reflector_port = reflector_server[0], reflector_server[1]
|
|
factory = ClientFactory(
|
|
lbry_file.blob_manager,
|
|
lbry_file.stream_info_manager,
|
|
lbry_file.stream_hash
|
|
)
|
|
d = reactor.resolve(reflector_address)
|
|
d.addCallback(lambda ip: reactor.connectTCP(ip, reflector_port, factory))
|
|
d.addCallback(lambda _: factory.finished_deferred)
|
|
return d
|
|
|
|
|
|
def _reflect_if_unavailable(reflector_has_stream, lbry_file, reflector_server):
|
|
if reflector_has_stream:
|
|
log.info("lbry://%s is available", lbry_file.uri)
|
|
return defer.succeed(False)
|
|
log.info("lbry://%s is unavailable, reflecting it", lbry_file.uri)
|
|
return _reflect_stream(lbry_file, reflector_server)
|
|
|
|
|
|
def _catch_error(err, uri):
|
|
log.error("An error occurred while checking availability for lbry://%s", uri)
|
|
log.debug("Traceback: %s", err.getTraceback())
|
|
|
|
|
|
def check_and_restore_availability(lbry_file, reflector_server):
|
|
d = _check_if_reflector_has_stream(lbry_file, reflector_server)
|
|
d.addCallbacks(
|
|
lambda send_stream: _reflect_if_unavailable(send_stream, lbry_file, reflector_server),
|
|
lambda err: _catch_error(err, lbry_file.uri))
|
|
return d
|