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get reflector client and server working; add func test to prove it

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This commit is contained in:
Jimmy Kiselak 2016-08-09 00:59:50 -04:00
parent b7e2e87ac1
commit 7e2ad58edd
3 changed files with 194 additions and 21 deletions
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55
lbrynet/reflector/client/client.py
View file

@ -51,6 +51,7 @@ import json
import logging
from twisted.protocols.basic import FileSender
from twisted.internet.protocol import Protocol, ClientFactory
from twisted.internet import defer, error
log = logging.getLogger(__name__)
@ -74,8 +75,11 @@ class LBRYFileReflectorClient(Protocol):
self.received_handshake_response = False
self.protocol_version = None
self.file_sender = None
self.producer = None
self.streaming = False
d = self.get_blobs_to_send(self.factory.stream_info_manager, self.factory.stream_hash)
d.addCallback(lambda _: self.send_handshake())
d.addErrback(lambda err: log.warning("An error occurred immediately: %s", err.getTraceback()))
def dataReceived(self, data):
self.response_buff += data
@ -86,45 +90,64 @@ class LBRYFileReflectorClient(Protocol):
else:
self.response_buff = ''
d = self.handle_response(msg)
d.addCallbacks(lambda _: self.send_next_request(), self.response_failure_handler)
d.addCallback(lambda _: self.send_next_request())
d.addErrback(self.response_failure_handler)
def connectionLost(self, reason):
pass
if reason.check(error.ConnectionDone):
self.factory.finished_deferred.callback(True)
else:
self.factory.finished_deferred.callback(reason)
# IConsumer stuff
def registerProducer(self, producer, streaming):
assert streaming is True
self.producer = producer
self.streaming = streaming
if self.streaming is False:
from twisted.internet import reactor
reactor.callLater(0, self.producer.resumeProducing)
def unregisterProducer(self):
self.transport.loseConnection()
self.producer = None
def write(self, data):
self.transport.write(data)
if self.producer is not None and self.streaming is False:
from twisted.internet import reactor
reactor.callLater(0, self.producer.resumeProducing)
def get_blobs_to_send(self, stream_info_manager, stream_hash):
d = stream_info_manager.get_blobs_for_stream(stream_hash)
def set_blobs(blob_hashes):
for blob_hash, position, iv, length in blob_hashes:
if blob_hash is not None:
self.blob_hashes_to_send.append(blob_hash)
d.addCallback(set_blobs)
d.addCallback(lambda _: stream_info_manager.get_sd_blob_hashes_for_stream)
d.addCallback(lambda _: stream_info_manager.get_sd_blob_hashes_for_stream(stream_hash))
def set_sd_blobs(sd_blob_hashes):
for sd_blob_hash, in sd_blob_hashes:
for sd_blob_hash in sd_blob_hashes:
self.blob_hashes_to_send.append(sd_blob_hash)
d.addCallback(set_sd_blobs)
return d
def send_handshake(self):
self.write(json.dumps({'version': 0}))
def parse_response(self, buff):
try:
return json.loads(buff)
except ValueError:
raise IncompleteResponseError()
def response_failure_handler(self, err):
log.warning("An error occurred handling the response: %s", err.getTraceback())
def handle_response(self, response_dict):
if self.received_handshake_response is False:
return self.handle_handshake_response(response_dict)
@ -132,15 +155,15 @@ class LBRYFileReflectorClient(Protocol):
return self.handle_normal_response(response_dict)
def set_not_uploading(self):
if self.currently_uploading is not None:
self.currently_uploading.close_read_handle(self.read_handle)
if self.next_blob_to_send is not None:
self.next_blob_to_send.close_read_handle(self.read_handle)
self.read_handle = None
self.currently_uploading = None
self.next_blob_to_send = None
self.file_sender = None
return defer.succeed(None)
def start_transfer(self):
self.write(json.dumps("{}"))
log.info("Starting the file upload")
self.write(json.dumps({}))
assert self.read_handle is not None, "self.read_handle was None when trying to start the transfer"
d = self.file_sender.beginFileTransfer(self.read_handle, self)
return d
@ -152,14 +175,15 @@ class LBRYFileReflectorClient(Protocol):
if self.protocol_version != 0:
raise ValueError("I can't handle protocol version {}!".format(self.protocol_version))
self.received_handshake_response = True
return defer.succeed(True)
def handle_normal_response(self, response_dict):
if self.next_blob_to_send is not None: # Expecting Server Info Response
if self.file_sender is None: # Expecting Server Info Response
if 'send_blob' not in response_dict:
raise ValueError("I don't know whether to send the blob or not!")
if response_dict['send_blob'] is True:
self.file_sender = FileSender()
return True
return defer.succeed(True)
else:
return self.set_not_uploading()
else: # Expecting Server Blob Response
@ -175,13 +199,13 @@ class LBRYFileReflectorClient(Protocol):
self.next_blob_to_send = blob
self.read_handle = read_handle
return None
raise ValueError("Couldn't open that blob for some reason")
raise ValueError("Couldn't open that blob for some reason. blob_hash: {}".format(blob.blob_hash))
def send_blob_info(self):
assert self.next_blob_to_send is not None, "need to have a next blob to send at this point"
self.write(json.dumps({
'blob_hash': self.next_blob_to_send.blob_hash,
'blob_length': self.next_blob_to_send.length
'blob_size': self.next_blob_to_send.length
}))
def send_next_request(self):
@ -210,6 +234,7 @@ class LBRYFileReflectorClientFactory(ClientFactory):
self.stream_info_manager = stream_info_manager
self.stream_hash = stream_hash
self.p = None
self.finished_deferred = defer.Deferred()
def buildProtocol(self, addr):
p = self.protocol()

9
lbrynet/reflector/server/server.py
View file

@ -1,6 +1,6 @@
import logging
from twisted.python import failure
from twisted.internet import error
from twisted.internet import error, defer
from twisted.internet.protocol import Protocol, ServerFactory
import json
@ -72,7 +72,8 @@ class ReflectorServer(Protocol):
self.peer_version = int(request_dict['version'])
if self.peer_version != 0:
raise ValueError("I don't know that version!")
return {'version': 0}
self.received_handshake = True
return defer.succeed({'version': 0})
def determine_blob_needed(self, blob):
if blob.is_validated():
@ -87,6 +88,7 @@ class ReflectorServer(Protocol):
self.blob_write = None
self.cancel_write = None
self.incoming_blob = None
self.receiving_blob = False
def handle_normal_request(self, request_dict):
if self.blob_write is None:
@ -113,11 +115,10 @@ class ReflectorServer(Protocol):
d = self.blob_finished_d
d.addCallback(lambda _: self.close_blob())
d.addCallback(lambda _: {'received_blob': True})
d.addCallback(self.send_response)
return d
def send_response(self, response_dict):
self.write(json.dumps(response_dict))
self.transport.write(json.dumps(response_dict))
def handle_error(self, err):
pass

149
tests/functional_tests.py
View file

@ -26,7 +26,7 @@ from lbrynet.core.StreamDescriptor import download_sd_blob
from lbrynet.lbryfilemanager.LBRYFileCreator import create_lbry_file
from lbrynet.lbryfile.client.LBRYFileOptions import add_lbry_file_to_sd_identifier
from lbrynet.lbryfile.StreamDescriptor import get_sd_info
from twisted.internet import defer, threads, task
from twisted.internet import defer, threads, task, error
from twisted.trial.unittest import TestCase
from twisted.python.failure import Failure
import os
@ -38,6 +38,10 @@ from lbrynet.core.server.ServerProtocol import ServerProtocolFactory
from lbrynet.lbrylive.server.LiveBlobInfoQueryHandler import CryptBlobInfoQueryHandlerFactory
from lbrynet.lbrylive.client.LiveStreamOptions import add_live_stream_to_sd_identifier
from lbrynet.lbrylive.client.LiveStreamDownloader import add_full_live_stream_downloader_to_sd_identifier
from lbrynet.core.BlobManager import TempBlobManager
from lbrynet.reflector.client.client import LBRYFileReflectorClientFactory
from lbrynet.reflector.server.server import ReflectorServerFactory
from lbrynet.lbryfile.StreamDescriptor import publish_sd_blob
log_format = "%(funcName)s(): %(message)s"
@ -1370,3 +1374,146 @@ class TestStreamify(TestCase):
d.addCallback(lambda _: create_stream())
d.addCallback(combine_stream)
return d
class TestReflector(TestCase):
def setUp(self):
self.session = None
self.stream_info_manager = None
self.lbry_file_manager = None
self.server_blob_manager = None
self.reflector_port = None
self.addCleanup(self.take_down_env)
def take_down_env(self):
d = defer.succeed(True)
if self.lbry_file_manager is not None:
d.addCallback(lambda _: self.lbry_file_manager.stop())
if self.session is not None:
d.addCallback(lambda _: self.session.shut_down())
if self.stream_info_manager is not None:
d.addCallback(lambda _: self.stream_info_manager.stop())
if self.server_blob_manager is not None:
d.addCallback(lambda _: self.server_blob_manager.stop())
if self.reflector_port is not None:
d.addCallback(lambda _: self.reflector_port.stopListening())
def delete_test_env():
shutil.rmtree('client')
d.addCallback(lambda _: threads.deferToThread(delete_test_env))
return d
def test_reflector(self):
wallet = FakeWallet()
peer_manager = PeerManager()
peer_finder = FakePeerFinder(5553, peer_manager, 2)
hash_announcer = FakeAnnouncer()
rate_limiter = DummyRateLimiter()
sd_identifier = StreamDescriptorIdentifier()
self.expected_blobs = [
('dc4708f76a5e7af0f1cae0ee96b824e2ed9250c9346c093b'
'441f0a20d3607c17948b6fcfb4bc62020fe5286693d08586', 2097152),
('f4067522c1b49432a2a679512e3917144317caa1abba0c04'
'1e0cd2cf9f635d4cf127ce1824fa04189b63916174951f70', 2097152),
('305486c434260484fcb2968ce0e963b72f81ba56c11b08b1'
'af0789b55b44d78422600f9a38e3cf4f2e9569897e5646a9', 1015056),
]
db_dir = "client"
os.mkdir(db_dir)
self.session = LBRYSession(MIN_BLOB_DATA_PAYMENT_RATE, db_dir=db_dir, lbryid="abcd",
peer_finder=peer_finder, hash_announcer=hash_announcer,
blob_dir=None, peer_port=5553,
use_upnp=False, rate_limiter=rate_limiter, wallet=wallet)
self.stream_info_manager = TempLBRYFileMetadataManager()
self.lbry_file_manager = LBRYFileManager(self.session, self.stream_info_manager, sd_identifier)
self.server_blob_manager = TempBlobManager(hash_announcer)
d = self.session.setup()
d.addCallback(lambda _: self.stream_info_manager.setup())
d.addCallback(lambda _: add_lbry_file_to_sd_identifier(sd_identifier))
d.addCallback(lambda _: self.lbry_file_manager.setup())
d.addCallback(lambda _: self.server_blob_manager.setup())
def verify_equal(sd_info):
self.assertEqual(sd_info, test_create_stream_sd_file)
def save_sd_blob_hash(sd_hash):
self.expected_blobs.append((sd_hash, 923))
def verify_stream_descriptor_file(stream_hash):
d = get_sd_info(self.lbry_file_manager.stream_info_manager, stream_hash, True)
d.addCallback(verify_equal)
d.addCallback(lambda _: publish_sd_blob(self.lbry_file_manager.stream_info_manager, self.session.blob_manager, stream_hash))
d.addCallback(save_sd_blob_hash)
d.addCallback(lambda _: stream_hash)
return d
def iv_generator():
iv = 0
while 1:
iv += 1
yield "%016d" % iv
def create_stream():
test_file = GenFile(5209343, b''.join([chr(i + 3) for i in xrange(0, 64, 6)]))
d = create_lbry_file(self.session, self.lbry_file_manager, "test_file", test_file,
key="0123456701234567", iv_generator=iv_generator())
return d
def start_server():
server_factory = ReflectorServerFactory(peer_manager, self.server_blob_manager)
from twisted.internet import reactor
port = 8943
while self.reflector_port is None:
try:
self.reflector_port = reactor.listenTCP(port, server_factory)
except error.CannotListenError:
port += 1
return defer.succeed(port)
def send_to_server(port, stream_hash):
factory = LBRYFileReflectorClientFactory(
self.session.blob_manager,
self.stream_info_manager,
stream_hash
)
from twisted.internet import reactor
reactor.connectTCP('localhost', port, factory)
return factory.finished_deferred
def verify_blob_completed(blob, blob_size):
self.assertTrue(blob.is_validated())
self.assertEqual(blob_size, blob.length)
def verify_have_blob(blob_hash, blob_size):
d = self.server_blob_manager.get_blob(blob_hash, True)
d.addCallback(lambda blob: verify_blob_completed(blob, blob_size))
return d
def verify_data_on_reflector():
check_blob_ds = []
for blob_hash, blob_size in self.expected_blobs:
check_blob_ds.append(verify_have_blob(blob_hash, blob_size))
return defer.DeferredList(check_blob_ds)
def upload_to_reflector(stream_hash):
d = start_server()
d.addCallback(lambda port: send_to_server(port, stream_hash))
d.addCallback(lambda _: verify_data_on_reflector())
return d
d.addCallback(lambda _: create_stream())
d.addCallback(verify_stream_descriptor_file)
d.addCallback(upload_to_reflector)
return d