class LBRYStdoutDownloader():
"""This class downloads a live stream from the network and outputs it to standard out."""
def __init__(self, dht_node_port, known_dht_nodes,
stream_info_manager_class=DBLiveStreamMetadataManager, blob_manager_class=TempBlobManager):
"""
@param dht_node_port: the network port on which to listen for DHT node requests
@param known_dht_nodes: a list of (ip_address, dht_port) which will be used to join the DHT network
"""
self.session = LBRYSession(blob_manager_class=blob_manager_class,
stream_info_manager_class=stream_info_manager_class,
dht_node_class=Node, dht_node_port=dht_node_port, known_dht_nodes=known_dht_nodes,
use_upnp=False)
self.payment_rate_manager = BaseLiveStreamPaymentRateManager()
def start(self):
"""Initialize the session"""
d = self.session.setup()
return d
def read_sd_file(self, sd_blob):
reader = BlobStreamDescriptorReader(sd_blob)
return save_sd_info(self.stream_info_manager, reader, ignore_duplicate=True)
def download_sd_file_from_hash(self, sd_hash):
downloader = StandaloneBlobDownloader(sd_hash, self.session.blob_manager,
self.session.peer_finder, self.session.rate_limiter,
self.session.wallet)
d = downloader.download()
return d
def start_download(self, sd_hash):
"""Start downloading the stream from the network and outputting it to standard out"""
d = self.download_sd_file_from_hash(sd_hash)
d.addCallbacks(self.read_sd_file)
def start_stream(stream_hash):
consumer = LBRYLiveStreamDownloader(stream_hash, self.session.peer_finder,
self.session.rate_limiter, self.session.blob_manager,
self.stream_info_manager, self.payment_rate_manager,
self.session.wallet)
return consumer.start()
d.addCallback(start_stream)
return d
def shut_down(self):
"""End the session"""
d = self.session.shut_down()
return d
class LBRYStdinUploader():
"""This class reads from standard in, creates a stream, and makes it available on the network."""
def __init__(self, peer_port, dht_node_port, known_dht_nodes,
stream_info_manager_class=DBLiveStreamMetadataManager, blob_manager_class=TempBlobManager):
"""
@param peer_port: the network port on which to listen for peers
@param dht_node_port: the network port on which to listen for nodes in the DHT
@param known_dht_nodes: a list of (ip_address, dht_port) which will be used to join the DHT network
"""
self.peer_port = peer_port
self.lbry_server_port = None
self.session = LBRYSession(blob_manager_class=blob_manager_class,
stream_info_manager_class=stream_info_manager_class,
dht_node_class=Node, dht_node_port=dht_node_port,
known_dht_nodes=known_dht_nodes, peer_port=self.peer_port,
use_upnp=False)
self.payment_rate_manager = BaseLiveStreamPaymentRateManager()
def start(self):
"""Initialize the session and start listening on the peer port"""
d = self.session.setup()
d.addCallback(lambda _: self._start())
return d
def _start(self):
self._start_server()
return True
def _start_server(self):
query_handler_factories = [
CryptBlobInfoQueryHandlerFactory(self.stream_info_manager, self.session.wallet,
self.payment_rate_manager),
BlobAvailabilityHandlerFactory(self.session.blob_manager),
BlobRequestHandlerFactory(self.session.blob_manager, self.session.wallet,
self.payment_rate_manager),
self.session.wallet.get_wallet_info_query_handler_factory()
]
self.server_factory = ServerProtocolFactory(self.session.rate_limiter,
query_handler_factories,
self.session.peer_manager)
from twisted.internet import reactor
self.lbry_server_port = reactor.listenTCP(self.peer_port, self.server_factory)
def start_live_stream(self, stream_name):
"""Create the stream and start reading from stdin
@param stream_name: a string, the suggested name of this stream
"""
stream_creator_helper = StdOutLiveStreamCreator(stream_name, self.session.blob_manager,
self.stream_info_manager)
d = stream_creator_helper.create_and_publish_stream_descriptor()
def print_sd_hash(sd_hash):
print "Stream descriptor hash:", sd_hash
d.addCallback(print_sd_hash)
d.addCallback(lambda _: stream_creator_helper.start_streaming())
return d
def shut_down(self):
"""End the session and stop listening on the server port"""
d = self.session.shut_down()
d.addCallback(lambda _: self._shut_down())
return d
def _shut_down(self):
if self.lbry_server_port is not None:
d = defer.maybeDeferred(self.lbry_server_port.stopListening)
else:
d = defer.succeed(True)
return d