import logging from twisted.internet import reactor from twisted.internet.error import ConnectionLost, ConnectionDone 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, lbry_file.uri ) d = reactor.resolve(reflector_address) d.addCallback(lambda ip: reactor.connectTCP(ip, reflector_port, factory)) d.addCallback(lambda _: factory.finished_deferred) return d def _catch_error(err, uri): msg = "An error occurred while checking availability for lbry://%s: %s" log.error(msg, uri, err.getTraceback()) def check_and_restore_availability(lbry_file, reflector_server): d = _reflect_stream(lbry_file, reflector_server) d.addErrback(lambda err: err.trap(ConnectionDone, ConnectionLost)) d.addErrback(_catch_error, lbry_file.uri) return d