from lbrynet.core.client.ClientRequest import ClientRequest from lbrynet.core.server.ServerProtocol import ServerProtocol from lbrynet.core.client.ClientProtocol import ClientProtocol from lbrynet.core.RateLimiter import RateLimiter from lbrynet.core.Peer import Peer from lbrynet.core.PeerManager import PeerManager from lbrynet.core.Error import NoResponseError from twisted.trial.unittest import TestCase from twisted.internet import defer, reactor, task from twisted.internet.task import deferLater from twisted.internet.protocol import ServerFactory from lbrynet import conf from lbrynet.core import utils PEER_PORT = 5551 LOCAL_HOST = '127.0.0.1' class MocDownloader: def insufficient_funds(self): pass class MocRequestCreator: def __init__(self, peers_to_return, peers_to_return_head_blob=None): self.peers_to_return = peers_to_return self.peers_to_return_head_blob = peers_to_return_head_blob or [] self.sent_request = False def send_next_request(self, peer, protocol): if self.sent_request is True: return defer.succeed(False) response_identifier = 'moc_request' r_dict = {'moc_request':0} request = ClientRequest(r_dict, response_identifier) d = protocol.add_request(request) # ClientRequest here d.addErrback(self.request_err, peer) d.addCallback(self.request_success) self.sent_request = True return defer.succeed(True) def request_success(self, suc): pass def request_err(self, err, peer): if isinstance(err.value, NoResponseError): return err def get_new_peers_for_next_unavailable(self): return self.peers_to_return def get_new_peers_for_head_blob(self): return self.peers_to_return_head_blob class MocFunctionalQueryHandler: def __init__(self, clock, is_good=True, is_delayed=False): self.query_identifiers = ['moc_request'] self.is_good = is_good self.is_delayed = is_delayed self.clock = clock def register_with_request_handler(self, request_handler, peer): request_handler.register_query_handler(self, self.query_identifiers) def handle_queries(self, queries): if self.query_identifiers[0] in queries: if self.is_delayed: delay = ClientProtocol.PROTOCOL_TIMEOUT+1 out = deferLater(self.clock, delay, lambda: {'moc_request':0}) self.clock.advance(delay) return out if self.is_good: return defer.succeed({'moc_request':0}) else: return defer.succeed({'bad_request':0}) else: return defer.succeed({}) class MocQueryHandlerFactory: # is is_good, the query handler works as expectd, # is is_delayed, the query handler will delay its resposne def __init__(self, clock, is_good=True, is_delayed=False): self.is_good = is_good self.is_delayed = is_delayed self.clock = clock def build_query_handler(self): return MocFunctionalQueryHandler(self.clock, self.is_good, self.is_delayed) def get_primary_query_identifier(self): return 'moc_query' def get_description(self): return "This is a Moc Query" class MocServerProtocolFactory(ServerFactory): protocol = ServerProtocol def __init__(self, clock, is_good=True, is_delayed=False, has_moc_query_handler=True): self.rate_limiter = RateLimiter() query_handler_factory = MocQueryHandlerFactory(clock, is_good, is_delayed) if has_moc_query_handler: self.query_handler_factories = { query_handler_factory.get_primary_query_identifier():query_handler_factory } else: self.query_handler_factories = {} self.peer_manager = PeerManager() class TestIntegrationConnectionManager(TestCase): skip = 'times out, needs to be refactored to work with py3' def setUp(self): conf.initialize_settings(False) self.TEST_PEER = Peer(LOCAL_HOST, PEER_PORT) self.downloader = MocDownloader() self.rate_limiter = RateLimiter() self.primary_request_creator = MocRequestCreator([self.TEST_PEER]) self.clock = task.Clock() utils.call_later = self.clock.callLater self.server_port = None def _init_connection_manager(self, seek_head_blob_first=False): # this import is required here so utils.call_later is replaced by self.clock.callLater from lbrynet.core.client.ConnectionManager import ConnectionManager self.connection_manager = ConnectionManager(self.downloader, self.rate_limiter, [self.primary_request_creator], []) self.connection_manager.seek_head_blob_first = seek_head_blob_first self.connection_manager._start() def tearDown(self): if self.server_port is not None: self.server_port.stopListening() self.connection_manager.stop() conf.settings = None @defer.inlineCallbacks def test_success(self): self._init_connection_manager() # test to see that if we setup a server, we get a connection self.server = MocServerProtocolFactory(self.clock) self.server_port = reactor.listenTCP(PEER_PORT, self.server, interface=LOCAL_HOST) yield self.connection_manager.manage(schedule_next_call=False) self.assertEqual(1, self.connection_manager.num_peer_connections()) connection_made = yield self.connection_manager._peer_connections[self.TEST_PEER].\ factory.connection_was_made_deferred self.assertEqual(0, self.connection_manager.num_peer_connections()) self.assertTrue(connection_made) self.assertEqual(1, self.TEST_PEER.success_count) self.assertEqual(0, self.TEST_PEER.down_count) @defer.inlineCallbacks def test_server_with_improper_reply(self): self._init_connection_manager() self.server = MocServerProtocolFactory(self.clock, is_good=False) self.server_port = reactor.listenTCP(PEER_PORT, self.server, interface=LOCAL_HOST) yield self.connection_manager.manage(schedule_next_call=False) self.assertEqual(1, self.connection_manager.num_peer_connections()) connection_made = yield self.connection_manager._peer_connections[self.TEST_PEER].\ factory.connection_was_made_deferred self.assertEqual(0, self.connection_manager.num_peer_connections()) self.assertTrue(connection_made) self.assertEqual(0, self.TEST_PEER.success_count) self.assertEqual(1, self.TEST_PEER.down_count) @defer.inlineCallbacks def test_non_existing_server(self): # Test to see that if we don't setup a server, we don't get a connection self._init_connection_manager() yield self.connection_manager.manage(schedule_next_call=False) self.assertEqual(1, self.connection_manager.num_peer_connections()) connection_made = yield self.connection_manager._peer_connections[self.TEST_PEER].\ factory.connection_was_made_deferred self.assertEqual(0, self.connection_manager.num_peer_connections()) self.assertFalse(connection_made) self.assertEqual(0, self.connection_manager.num_peer_connections()) self.assertEqual(0, self.TEST_PEER.success_count) self.assertEqual(1, self.TEST_PEER.down_count) @defer.inlineCallbacks def test_parallel_connections(self): # Test to see that we make two new connections at a manage call, # without it waiting for the connection to complete self._init_connection_manager() test_peer2 = Peer(LOCAL_HOST, PEER_PORT+1) self.primary_request_creator.peers_to_return = [self.TEST_PEER, test_peer2] yield self.connection_manager.manage(schedule_next_call=False) self.assertEqual(2, self.connection_manager.num_peer_connections()) self.assertIn(self.TEST_PEER, self.connection_manager._peer_connections) self.assertIn(test_peer2, self.connection_manager._peer_connections) deferred_conn_made_peer1 = self.connection_manager._peer_connections[self.TEST_PEER].\ factory.connection_was_made_deferred deferred_conn_made_peer1.addCallback(lambda conn_made: self.assertFalse(conn_made)) deferred_conn_made_peer2 = self.connection_manager._peer_connections[test_peer2].\ factory.connection_was_made_deferred deferred_conn_made_peer2.addCallback(lambda conn_made: self.assertFalse(conn_made)) yield deferred_conn_made_peer1 yield deferred_conn_made_peer2 self.assertEqual(0, self.connection_manager.num_peer_connections()) self.assertEqual(0, self.TEST_PEER.success_count) self.assertEqual(1, self.TEST_PEER.down_count) self.assertEqual(0, test_peer2.success_count) self.assertEqual(1, test_peer2.down_count) @defer.inlineCallbacks def test_stop(self): # test to see that when we call stop, the ConnectionManager waits for the # current manage call to finish, closes connections, # and removes scheduled manage calls self._init_connection_manager() self.connection_manager.manage(schedule_next_call=True) yield self.connection_manager.stop() self.assertEqual(0, self.TEST_PEER.success_count) self.assertEqual(1, self.TEST_PEER.down_count) self.assertEqual(0, self.connection_manager.num_peer_connections()) self.assertIsNone(self.connection_manager._next_manage_call) @defer.inlineCallbacks def test_closed_connection_when_server_is_slow(self): self._init_connection_manager() self.server = MocServerProtocolFactory( self.clock, has_moc_query_handler=True, is_delayed=True) self.server_port = reactor.listenTCP(PEER_PORT, self.server, interface=LOCAL_HOST) yield self.connection_manager.manage(schedule_next_call=False) self.assertEqual(1, self.connection_manager.num_peer_connections()) connection_made = yield self.connection_manager._peer_connections[self.TEST_PEER].\ factory.connection_was_made_deferred self.assertEqual(0, self.connection_manager.num_peer_connections()) self.assertTrue(connection_made) self.assertEqual(0, self.TEST_PEER.success_count) self.assertEqual(1, self.TEST_PEER.down_count) # test header first seeks @defer.inlineCallbacks def test_no_peer_for_head_blob(self): # test that if we can't find blobs for the head blob, # it looks at the next unavailable and makes connection self._init_connection_manager(seek_head_blob_first=True) self.server = MocServerProtocolFactory(self.clock) self.server_port = reactor.listenTCP(PEER_PORT, self.server, interface=LOCAL_HOST) self.primary_request_creator.peers_to_return_head_blob = [] self.primary_request_creator.peers_to_return = [self.TEST_PEER] yield self.connection_manager.manage(schedule_next_call=False) self.assertEqual(1, self.connection_manager.num_peer_connections()) connection_made = yield self.connection_manager._peer_connections[self.TEST_PEER].\ factory.connection_was_made_deferred self.assertEqual(0, self.connection_manager.num_peer_connections()) self.assertTrue(connection_made) self.assertEqual(1, self.TEST_PEER.success_count) self.assertEqual(0, self.TEST_PEER.down_count)