def test_5_integration_stomp_1_1_heartbeat(self): version = StompSpec.VERSION_1_1 if BROKER == 'apollo': print "Broker %s doesn't properly support heart-beating. Skipping test." % BROKER return port = 61612 if (BROKER == 'activemq') else PORT # stomp+nio on 61613 does not work properly, so use stomp on 61612 client = Stomp(self.getConfig(StompSpec.VERSION_1_1, port)) self.assertEquals(client.lastReceived, None) self.assertEquals(client.lastSent, None) heartBeatPeriod = 100 try: client.connect(host=VIRTUALHOST, heartBeats=(heartBeatPeriod, heartBeatPeriod), versions=[version]) except StompProtocolError as e: print 'Broker does not support STOMP protocol %s. Skipping this test case. [%s]' % (e, version) return self.assertTrue((time.time() - client.lastReceived) < 0.1) if not (client.serverHeartBeat and client.clientHeartBeat): print 'broker does not support heart-beating. disconnecting ...' client.disconnect() client.close() return serverHeartBeatInSeconds = client.serverHeartBeat / 1000.0 clientHeartBeatInSeconds = client.clientHeartBeat / 1000.0 start = time.time() while (time.time() - start) < (2.5 * max(serverHeartBeatInSeconds, clientHeartBeatInSeconds)): time.sleep(0.5 * min(serverHeartBeatInSeconds, clientHeartBeatInSeconds)) client.canRead(0) self.assertTrue((time.time() - client.lastReceived) < (2.0 * serverHeartBeatInSeconds)) if (time.time() - client.lastSent) > (0.5 * clientHeartBeatInSeconds): client.beat() self.assertTrue((time.time() - client.lastSent) < 0.1) start = time.time() try: while not client.canRead(0.5 * clientHeartBeatInSeconds): pass except StompConnectionError: self.assertTrue((time.time() - start) < (3.0 * clientHeartBeatInSeconds)) self.assertTrue((time.time() - client.lastReceived) < (2.0 * serverHeartBeatInSeconds)) self.assertTrue((time.time() - client.lastSent) > clientHeartBeatInSeconds) else: raise client.close()
def test_5_integration_stomp_1_1_heartbeat(self): version = StompSpec.VERSION_1_1 port = 61612 if (BROKER == 'activemq') else PORT # stomp+nio on 61613 does not work properly, so use stomp on 61612 client = Stomp(self.getConfig(StompSpec.VERSION_1_1, port)) self.assertEquals(client.lastReceived, None) self.assertEquals(client.lastSent, None) heartBeatPeriod = 100 try: client.connect(host=VIRTUALHOST, heartBeats=(heartBeatPeriod, heartBeatPeriod), versions=[version]) except StompProtocolError as e: print 'Broker does not support STOMP protocol %s. Skipping this test case. [%s]' % (e, version) return self.assertTrue((time.time() - client.lastReceived) < 0.1) if not (client.serverHeartBeat and client.clientHeartBeat): print 'broker does not support heart-beating. disconnecting ...' client.disconnect() client.close() return serverHeartBeatInSeconds = client.serverHeartBeat / 1000.0 clientHeartBeatInSeconds = client.clientHeartBeat / 1000.0 start = time.time() while (time.time() - start) < (2.5 * max(serverHeartBeatInSeconds, clientHeartBeatInSeconds)): time.sleep(0.5 * min(serverHeartBeatInSeconds, clientHeartBeatInSeconds)) client.canRead(0) self.assertTrue((time.time() - client.lastReceived) < (2.0 * serverHeartBeatInSeconds)) if (time.time() - client.lastSent) > (0.5 * clientHeartBeatInSeconds): client.beat() self.assertTrue((time.time() - client.lastSent) < 0.1) start = time.time() try: while not client.canRead(0.5 * clientHeartBeatInSeconds): pass if client.receiveFrame().command == StompSpec.ERROR: raise StompProtocolError() except (StompConnectionError, StompProtocolError): self.assertTrue((time.time() - start) < (3.0 * clientHeartBeatInSeconds)) self.assertTrue((time.time() - client.lastReceived) < (2.0 * serverHeartBeatInSeconds)) self.assertTrue((time.time() - client.lastSent) > clientHeartBeatInSeconds) else: raise client.close()
def test_5_integration_stomp_1_1_heartbeat(self): version = StompSpec.VERSION_1_1 client = Stomp(self.getConfig(StompSpec.VERSION_1_1)) self.assertEqual(client.lastReceived, None) self.assertEqual(client.lastSent, None) heartBeatPeriod = 100 try: client.connect(host=VIRTUALHOST, heartBeats=(heartBeatPeriod, heartBeatPeriod), versions=[version]) except StompProtocolError as e: print('Broker does not support STOMP protocol %s. Skipping this test case. [%s]' % (e, version)) return self.assertTrue((time.time() - client.lastReceived) < 0.1) if not (client.serverHeartBeat and client.clientHeartBeat): print('broker does not support heart-beating. disconnecting ...') client.disconnect() client.close() return serverHeartBeatInSeconds = client.serverHeartBeat / 1000.0 clientHeartBeatInSeconds = client.clientHeartBeat / 1000.0 start = time.time() while (time.time() - start) < (2.5 * max(serverHeartBeatInSeconds, clientHeartBeatInSeconds)): time.sleep(0.5 * min(serverHeartBeatInSeconds, clientHeartBeatInSeconds)) client.canRead(0) self.assertTrue((time.time() - client.lastReceived) < (2.0 * serverHeartBeatInSeconds)) if (time.time() - client.lastSent) > (0.5 * clientHeartBeatInSeconds): client.beat() self.assertTrue((time.time() - client.lastSent) < 0.1) start = time.time() try: while not client.canRead(0.5 * clientHeartBeatInSeconds): pass if client.receiveFrame().command == StompSpec.ERROR: raise StompProtocolError() except (StompConnectionError, StompProtocolError): self.assertTrue((time.time() - start) < (3.0 * clientHeartBeatInSeconds)) self.assertTrue((time.time() - client.lastReceived) < (2.0 * serverHeartBeatInSeconds)) self.assertTrue((time.time() - client.lastSent) > clientHeartBeatInSeconds) else: raise client.close()
print "--------------------------------------------------------------------" print "state : ", client.session.state print "client HB : ", client.session.clientHeartBeat print "server HB : ", client.session.serverHeartBeat print "server : ", client.session.server print "id : ", client.session.id print "lastSent : ", toTime(client.session.lastSent) print "lastReceived : ", toTime(client.session.lastReceived) start = time.time() elapsed = lambda t=None: (t or time.time()) - start times = lambda: 'elapsed: %.2f, last received: %.2f, last sent: %.2f' % ( elapsed(), elapsed(client.lastReceived), elapsed(client.lastSent)) for x in range(0, 7): client.beat() print times() time.sleep(1) # while elapsed() < 2 * client.clientHeartBeat / 1000.0: # client.canRead(0.8 * client.serverHeartBeat / 1000.0) # poll server heart-beats # client.beat() # send client heart-beats # print times() # client.canRead() # print times() client.disconnect() sys.exit(0)
if __name__ == '__main__': client = Stomp(CONFIG) client.connect(connectedTimeout=4, heartBeats=(1000,0)) print "--------------------------------------------------------------------" print "state : ", client.session.state print "client HB : ", client.session.clientHeartBeat print "server HB : ", client.session.serverHeartBeat print "server : ", client.session.server print "id : ", client.session.id print "lastSent : ", toTime(client.session.lastSent) print "lastReceived : ", toTime(client.session.lastReceived) start = time.time() elapsed = lambda t = None: (t or time.time()) - start times = lambda: 'elapsed: %.2f, last received: %.2f, last sent: %.2f' % ( elapsed(), elapsed(client.lastReceived), elapsed(client.lastSent) ) for x in range(0, 4): client.beat() print times() time.sleep(1) client.disconnect() sys.exit(0)
class StompClient(BaseComponent): """ Send and Receive messages from a STOMP queue """ channel = "stomp" def init(self, host, port, username=None, password=None, connect_timeout=3, connected_timeout=3, version=StompSpec.VERSION_1_2, accept_versions=["1.0", "1.1", "1.2"], heartbeats=(0, 0), ssl_context=None, use_ssl=True, key_file=None, cert_file=None, ca_certs=None, ssl_version=ssl.PROTOCOL_SSLv23, key_file_password=None, proxy_host=None, proxy_port=None, proxy_user=None, proxy_password=None, channel=channel): """ Initialize StompClient. Called after __init__ """ self.channel = channel if proxy_host: LOG.info("Connect to %s:%s through proxy %s:%d", host, port, proxy_host, proxy_port) else: LOG.info("Connect to %s:%s", host, port) if use_ssl and not ssl_context: ssl_params = dict(key_file=key_file, cert_file=cert_file, ca_certs=ca_certs, ssl_version=ssl_version, password=key_file_password) LOG.info("Request to use old-style socket wrapper: %s", ssl_params) ssl_context = ssl_params if use_ssl: uri = "ssl://%s:%s" % (host, port) else: uri = "tcp://%s:%s" % (host, port) # Configure failover options so it only tries to connect once self._stomp_server = "failover:(%s)?maxReconnectAttempts=1,startupMaxReconnectAttempts=1" % uri self._stomp_config = StompConfig(uri=self._stomp_server, sslContext=ssl_context, version=version, login=username, passcode=password) self._heartbeats = heartbeats self._accept_versions = accept_versions self._connect_timeout = connect_timeout self._connected_timeout = connected_timeout Stomp._transportFactory = EnhancedStompFrameTransport Stomp._transportFactory.proxy_host = proxy_host Stomp._transportFactory.proxy_port = proxy_port Stomp._transportFactory.proxy_user = proxy_user Stomp._transportFactory.proxy_password = proxy_password self._client = Stomp(self._stomp_config) self._subscribed = {} self.server_heartbeat = None self.client_heartbeat = None self.ALLOWANCE = 2 # multiplier for heartbeat timeouts @property def connected(self): if self._client.session: return self._client.session.state == StompSession.CONNECTED else: return False @property def subscribed(self): return self._subscribed.keys() @property def stomp_logger(self): return LOG_CATEGORY @handler("disconnect") def _disconnect(self, receipt=None): if self.connected: self._client.disconnect(receipt=receipt) self._client.close(flush=True) self.fire(disconnected(reconnect=False)) self._subscribed = {} return "disconnected" def start_heartbeats(self): LOG.info("Client HB: %s Server HB: %s", self._client.clientHeartBeat, self._client.serverHeartBeat) if self._client.clientHeartBeat: if self.client_heartbeat: # Timer already exists, just reset it self.client_heartbeat.reset() else: LOG.info("Client will send heartbeats to server") # Send heartbeats at 80% of agreed rate self.client_heartbeat = Timer((self._client.clientHeartBeat / 1000.0) * 0.8, client_heartbeat(), persist=True) self.client_heartbeat.register(self) else: LOG.info("No Client heartbeats will be sent") if self._client.serverHeartBeat: if self.server_heartbeat: # Timer already exists, just reset it self.server_heartbeat.reset() else: LOG.info("Requested heartbeats from server.") # Allow a grace period on server heartbeats self.server_heartbeat = Timer((self._client.serverHeartBeat / 1000.0) * self.ALLOWANCE, server_heartbeat(), persist=True) self.server_heartbeat.register(self) else: LOG.info("Expecting no heartbeats from Server") @handler("connect") def connect(self, event, host=None, *args, **kwargs): """ connect to Stomp server """ LOG.info("Connect to Stomp...") try: self._client.connect(heartBeats=self._heartbeats, host=host, versions=self._accept_versions, connectTimeout=self._connect_timeout, connectedTimeout=self._connected_timeout) LOG.info("State after Connection Attempt: %s", self._client.session.state) if self.connected: LOG.info("Connected to %s", self._stomp_server) self.fire(connected()) self.start_heartbeats() return "success" except StompConnectionError: LOG.debug(traceback.format_exc()) self.fire(connection_failed(self._stomp_server)) event.success = False return "fail" @handler("server_heartbeat") def check_server_heartbeat(self, event): """ Confirm that heartbeat from server hasn't timed out """ now = time.time() last = self._client.lastReceived or 0 if last: elapsed = now - last else: elapsed = -1 LOG.debug("Last received data %d seconds ago", elapsed) if ((self._client.serverHeartBeat / 1000.0) * self.ALLOWANCE + last) < now: LOG.error("Server heartbeat timeout. %d seconds since last heartbeat. Disconnecting.", elapsed) event.success = False self.fire(heartbeat_timeout()) if self.connected: self._client.disconnect() # TODO: Try to auto-reconnect? @handler("client_heartbeat") def send_heartbeat(self, event): if self.connected: LOG.debug("Sending heartbeat") try: self._client.beat() except StompConnectionError: event.success = False self.fire(disconnected()) @handler("generate_events") def generate_events(self, event): if not self.connected: return try: if self._client.canRead(1): frame = self._client.receiveFrame() LOG.debug("Recieved frame %s", frame) self.fire(message(frame)) except StompConnectionError: self.fire(disconnected()) @handler("send") def send(self, event, destination, body, headers=None, receipt=None): LOG.debug("send()") if not self.connected: LOG.error("Can't send when Stomp is disconnected") self.fire(on_stomp_error(None, Exception("Message send attempted with stomp disconnected"))) event.success = False return try: self._client.send(destination, body=body.encode('utf-8'), headers=headers, receipt=receipt) LOG.debug("Message sent") except StompConnectionError as err: event.success = False self.fire(disconnected()) except StompError as err: LOG.error("Error sending ack") event.success = False self.fire(on_stomp_error(None, err)) @handler("subscribe") def _subscribe(self, event, destination, ack=ACK_CLIENT_INDIVIDUAL): if ack not in ACK_MODES: raise ValueError("Invalid client ack mode specified") LOG.info("Subscribe to message destination %s", destination) try: # Set ID to match destination name for easy reference later frame, token = self._client.subscribe(destination, headers={StompSpec.ACK_HEADER: ack, 'id': destination}) self._subscribed[destination] = token except StompConnectionError as err: event.success = False self.fire(disconnected()) except StompError as err: event.success = False LOG.debug(traceback.format_exc()) self.fire(on_stomp_error(None, err)) @handler("unsubscribe") def _unsubscribe(self, event, destination): if destination not in self._subscribed: LOG.error("Unsubscribe Request Ignored. Not subscribed to %s", destination) return try: token = self._subscribed.pop(destination) frame = self._client.unsubscribe(token) LOG.debug("Unsubscribed: %s", frame) except StompConnectionError as err: event.success = False self.fire(disconnected()) except StompError as err: LOG.error("Error sending ack") event.success = False self.fire(on_stomp_error(frame, err)) @handler("message") def on_message(self, event, headers, message): LOG.info("Stomp message received") @handler("ack") def ack_frame(self, event, frame): LOG.debug("ack_frame()") try: self._client.ack(frame) LOG.debug("Ack Sent") except StompConnectionError as err: LOG.error("Error sending ack") event.success = False self.fire(disconnected()) except StompError as err: LOG.error("Error sending ack") event.success = False self.fire(on_stomp_error(frame, err)) def get_subscription(self, frame): """ Get subscription from frame """ LOG.info(self._subscribed) _, token = self._client.message(frame) return self._subscribed[token]
class StompClient(BaseComponent): channel = "stomp" def init( self, host, port, username=None, password=None, connect_timeout=3, connected_timeout=3, version=StompSpec.VERSION_1_2, accept_versions=["1.0", "1.1", "1.2"], heartbeats=(0, 0), ssl_context=None, use_ssl=True, key_file=None, cert_file=None, ca_certs=None, ssl_version=ssl.PROTOCOL_SSLv23, # means 'latest available' key_file_password=None, proxy_host=None, proxy_port=None, proxy_user=None, proxy_password=None, channel=channel): """ Initialize StompClient. Called after __init__ """ self.channel = channel if proxy_host: LOG.info("Connect to %s:%s through proxy %s:%d", host, port, proxy_host, proxy_port) else: LOG.info("Connect to %s:%s", host, port) if use_ssl and not ssl_context: ssl_params = dict(key_file=key_file, cert_file=cert_file, ca_certs=ca_certs, ssl_version=ssl_version, password=key_file_password) LOG.info("Request to use old-style socket wrapper: %s", ssl_params) ssl_context = ssl_params if use_ssl: uri = "ssl://%s:%s" % (host, port) else: uri = "tcp://%s:%s" % (host, port) # Configure failover options so it only tries to connect once self._stomp_server = "failover:(%s)?maxReconnectAttempts=1,startupMaxReconnectAttempts=1" % uri self._stomp_config = StompConfig(uri=self._stomp_server, sslContext=ssl_context, version=version, login=username, passcode=password) self._heartbeats = heartbeats self._accept_versions = accept_versions self._connect_timeout = connect_timeout self._connected_timeout = connected_timeout Stomp._transportFactory = EnhancedStompFrameTransport Stomp._transportFactory.proxy_host = proxy_host Stomp._transportFactory.proxy_port = proxy_port Stomp._transportFactory.proxy_user = proxy_user Stomp._transportFactory.proxy_password = proxy_password self._client = Stomp(self._stomp_config) self._subscribed = {} self.server_heartbeat = None self.client_heartbeat = None self.last_heartbeat = 0 self.ALLOWANCE = 2 # multiplier for heartbeat timeouts @property def connected(self): if self._client.session: return self._client.session.state == StompSession.CONNECTED else: return False @property def socket_connected(self): try: if self._client._transport: return True except: pass return False @property def subscribed(self): return self._subscribed.keys() @property def stomp_logger(self): return LOG_CATEGORY @handler("Disconnect") def _disconnect(self, receipt=None, flush=True, reconnect=False): try: if flush: self._subscribed = {} if self.connected: self._client.disconnect(receipt=receipt) except Exception as e: LOG.error("Failed to disconnect client") try: self.fire(Disconnected(reconnect=reconnect)) self._client.close(flush=flush) except Exception as e: LOG.error("Failed to close client connection") return "disconnected" def start_heartbeats(self): LOG.info("Client HB: %s Server HB: %s", self._client.clientHeartBeat, self._client.serverHeartBeat) if self._client.clientHeartBeat: if self.client_heartbeat: # Timer already exists, just reset it self.client_heartbeat.reset() else: LOG.info("Client will send heartbeats to server") # Send heartbeats at 80% of agreed rate self.client_heartbeat = Timer( (self._client.clientHeartBeat / 1000.0) * 0.8, ClientHeartbeat(), persist=True) self.client_heartbeat.register(self) else: LOG.info("No Client heartbeats will be sent") if self._client.serverHeartBeat: if self.server_heartbeat: # Timer already exists, just reset it self.server_heartbeat.reset() else: LOG.info("Requested heartbeats from server.") # Allow a grace period on server heartbeats self.server_heartbeat = Timer( (self._client.serverHeartBeat / 1000.0) * self.ALLOWANCE, ServerHeartbeat(), persist=True) self.server_heartbeat.register(self) else: LOG.info("Expecting no heartbeats from Server") @handler("Connect") def connect(self, event, host=None, *args, **kwargs): """ connect to Stomp server """ LOG.info("Connect to Stomp...") try: self._client.connect(heartBeats=self._heartbeats, host=host, versions=self._accept_versions, connectTimeout=self._connect_timeout, connectedTimeout=self._connected_timeout) LOG.debug("State after Connection Attempt: %s", self._client.session.state) if self.connected: LOG.info("Connected to %s", self._stomp_server) self.fire(Connected()) self.start_heartbeats() return "success" except StompConnectionError as err: LOG.debug(traceback.format_exc()) self.fire(ConnectionFailed(self._stomp_server)) event.success = False return "fail" @handler("ServerHeartbeat") def check_server_heartbeat(self, event): """ Confirm that heartbeat from server hasn't timed out """ now = time.time() self.last_heartbeat = self._client.lastReceived or self.last_heartbeat if self.last_heartbeat: elapsed = now - self.last_heartbeat else: elapsed = -1 if ((self._client.serverHeartBeat / 1000.0) * self.ALLOWANCE + self.last_heartbeat) < now: LOG.error( "Server heartbeat timeout. %d seconds since last heartbeat.", elapsed) event.success = False self.fire(HeartbeatTimeout()) @handler("ClientHeartbeat") def send_heartbeat(self, event): if self.connected: LOG.debug("Sending heartbeat") try: self._client.beat() except (StompConnectionError, StompError) as err: event.success = False self.fire(OnStompError(None, err)) @handler("generate_events") def generate_events(self, event): event.reduce_time_left(0.1) if not self.connected: return try: if self._client.canRead(0): frame = self._client.receiveFrame() LOG.debug("Recieved frame %s", frame) if frame.command == StompSpec.ERROR: self.fire(OnStompError(frame, None)) else: self.fire(Message(frame)) except (StompConnectionError, StompError) as err: LOG.error("Failed attempt to generate events.") self.fire(OnStompError(None, err)) @handler("Send") def send(self, event, destination, body, headers=None, receipt=None): LOG.debug("send()") try: self._client.send(destination, body=body.encode('utf-8'), headers=headers, receipt=receipt) LOG.debug("Message sent") except (StompConnectionError, StompError) as err: LOG.error("Error sending frame") event.success = False self.fire(OnStompError(None, err)) raise # To fire Send_failure event @handler("Subscribe") def _subscribe(self, event, destination, additional_headers=None, ack=ACK_CLIENT_INDIVIDUAL): if ack not in ACK_MODES: raise ValueError("Invalid client ack mode specified") if destination in self._client.session._subscriptions: LOG.debug("Ignoring subscribe request to %s. Already subscribed.", destination) LOG.info("Subscribe to message destination %s", destination) try: headers = {StompSpec.ACK_HEADER: ack, 'id': destination} if additional_headers: headers.update(additional_headers) # Set ID to match destination name for easy reference later frame, token = self._client.subscribe(destination, headers) self._subscribed[destination] = token except (StompConnectionError, StompError) as err: LOG.error("Failed to subscribe to queue.") event.success = False LOG.debug(traceback.format_exc()) self.fire(OnStompError(None, err)) @handler("Unsubscribe") def _unsubscribe(self, event, destination): if destination not in self._subscribed: LOG.error("Unsubscribe Request Ignored. Not subscribed to %s", destination) return try: token = self._subscribed.pop(destination) frame = self._client.unsubscribe(token) LOG.debug("Unsubscribed: %s", frame) except (StompConnectionError, StompError) as err: event.success = False LOG.error("Unsubscribe Failed.") self.fire(OnStompError(frame, err)) @handler("Message") def on_message(self, event, headers, message): LOG.debug("Stomp message received") @handler("Ack") def ack_frame(self, event, frame): LOG.debug("ack_frame()") try: self._client.ack(frame) LOG.debug("Ack Sent") except (StompConnectionError, StompError) as err: LOG.error("Error sending ack") event.success = False self.fire(OnStompError(frame, err)) raise # To fire Ack_failure event def get_subscription(self, frame): """ Get subscription from frame """ _, token = self._client.message(frame) return self._subscribed[token]
class client_activemq(): def __init__(self, worker_threads=2): self.log = logging.getLogger('client_activemq') self.log.debug('Initializing client_activemq') self.host = '127.0.0.1' #manually set here until there is a better place self.port = 61613 #manually set here until there is a better place self.worker_threads = worker_threads self.client = None self.connection_issue = True self.continue_running = True self.subscriptions = {} self.outbound_msg_queue = [] self.outbound_msg_queue_lazy = [] self.threads = [] self.work_queue = Queue.Queue() connection_handler = threading.Thread(target=self.connection_handler) connection_handler.daemon = True connection_handler.start() send_event_hopeful_thread = threading.Thread( target=self.send_event_hopeful_thread) send_event_hopeful_thread.daemon = True send_event_hopeful_thread.start() send_event_lazy_thread = threading.Thread( target=self.send_event_lazy_thread) send_event_lazy_thread.daemon = True send_event_lazy_thread.start() publish_loop = threading.Thread(target=self.publish_loop) publish_loop.daemon = True publish_loop.start() def init_connection(self): if (self.client != None and self.client.session.state == 'connected'): self.log.error('Re-init connection') try: self.client.disconnect() except: pass config = StompConfig('tcp://%s:%s' % (self.host, self.port), version=StompSpec.VERSION_1_1, check=True) self.client = Stomp(config) self.client.connect(heartBeats=(30000, 0), connectTimeout=1, connectedTimeout=1) def build_worker_pool(self, capacity): for thread in self.threads: if thread.is_alive() == False: self.threads.remove(thread) while len(self.threads) < capacity: t = threading.Thread(target=self.worker, args=(self.work_queue, )) t.daemon = True t.start() self.threads.append(t) def connection_handler(self): #This func will just try to reconnect repeatedly in a thread if we're flagged as having an issue. while (True): if (self.connection_issue == True): try: self.init_connection() self.connection_issue = False time.sleep(0.1) for subscription in self.subscriptions: self.log.info('Re-subscribing upon reconnection: %s' % subscription) self.subscribe( subscription, self.subscriptions[subscription]['callback_class'], self.subscriptions[subscription]['callback'], True, self.subscriptions[subscription]['selector']) except Exception as e: self.log.critical('Except: %s' % e) else: try: self.client.beat() except: self.log.warning('Failed to heartbeat?') self.build_worker_pool(self.worker_threads) time.sleep(10) def subscribe(self, queue, callback_class, callback, resub=False, selector=None): #This needs to exist so we can keep track of what subs we have and re-sub on reconnect if queue in self.subscriptions and not resub: self.log.info('Ignoring existing subscription %s' % queue) return True #we're already subscribed this_uuid = '%s' % uuid.uuid4() if (self.connection_issue == True): self.log.info( 'Cannot process subscription request as were not properly connected' ) self.subscriptions[queue] = { 'uuid': this_uuid, 'callback': callback, 'callback_class': callback_class, 'selector': selector } return None self.log.info('subscribe(%s %s %s %s)' % (queue, callback_class, callback, resub)) try: self.subscriptions[queue] = { 'uuid': this_uuid, 'callback': callback, 'callback_class': callback_class, 'selector': selector } if selector != None: self.client.subscribe( queue, { StompSpec.ID_HEADER: this_uuid, StompSpec.ACK_HEADER: StompSpec.ACK_AUTO, 'selector': selector }) else: self.client.subscribe( queue, { StompSpec.ID_HEADER: this_uuid, StompSpec.ACK_HEADER: StompSpec.ACK_AUTO, }) except Exception as e: self.log.fatal('%s' % e) self.connection_issue = True def unsubscribe(self, queue): if queue not in self.subscriptions: return False #cant unsubscribe, we're not subscribed if (self.connection_issue == True): del self.subscriptions[queue] return None try: self.client.unsubscribe(self.subscriptions[queue]['uuid']) del self.subscriptions[queue] except Exception as e: self.log.error('%s' % e) self.log.error('%s' % traceback.format_exc()) sys.exc_clear() self.connection_issue = True def send_event_lazy(self, destination, body, headers={}, persistent=False): headers['time_queued'] = time.time() self.outbound_msg_queue_lazy.append({ 'destination': destination, 'body': body, 'headers': headers, 'persistent': persistent }) def send_event_lazy_thread(self): while self.continue_running: time.sleep(0.001) #If it gets there, then great, if not, well we tried! if (self.connection_issue == True): continue while len(self.outbound_msg_queue_lazy ) > 0 and self.connection_issue == False: try: item = self.outbound_msg_queue_lazy.pop(0) if item['persistent'] == True: item['headers']['persistent'] = 'true' else: item['headers']['persistent'] = 'false' item['headers']['time_sent'] = time.time() self.client.send(item['destination'], json.dumps(item['body']), item['headers']) except Exception as e: self.log.critical('Except: %s' % e) self.outbound_msg_queue_lazy.insert(0, item) self.connection_issue = True def send_event_hopeful(self, destination, body, persist): self.outbound_msg_queue.append({ 'destination': destination, 'body': body }) def send_event_hopeful_thread(self): while self.continue_running: time.sleep(0.001) if (self.connection_issue == True): continue while len(self.outbound_msg_queue ) > 0 and self.connection_issue == False: try: item = self.outbound_msg_queue.pop(0) self.client.send(item['destination'], json.dumps(item['body']), {'persistent': 'false'}) except Exception as e: self.log.critical('Except: %s' % e) self.outbound_msg_queue.insert(0, item) self.connection_issue = True def worker(self, queue): while self.continue_running: try: item = queue.get() for x in 1, 2, 3: try: item['callback'](item['callback_class'], item['data'], item['headers']) break except Exception as e: self.log.error('Exception in worker thread: %s' % e) traceback.print_exc() sys.exc_clear() time.sleep(0.01) queue.task_done() except: pass def publish_loop(self): self.log.debug('publish_loop() init') time.sleep(0.2) while self.continue_running: if self.connection_issue == False: try: if not self.client.canRead(0.01): continue try: frame = self.client.receiveFrame() data = json.loads(frame.body) queue = frame.headers['destination'] try: time_sent = float(frame.headers['time_sent']) time_queued = float(frame.headers['time_queued']) send_latency = (time.time() - time_sent) queue_latency = (time_sent - time_queued) if queue_latency > 0.1: print 'Queue Latency: %s' % (queue_latency) if send_latency > 0.1: print 'Send Latency: %s' % (send_latency) except: pass self.work_queue.put({ 'callback': self.subscriptions[queue]['callback'], 'callback_class': self.subscriptions[queue]['callback_class'], 'data': data, 'headers': frame.headers, }) #self.client.ack(frame) except Exception as e: raise self.log.critical('Except: %s' % e) #self.client.nack(frame) except Exception as e: self.log.fatal('except: %s' % e) self.connection_issue = True