def _test_4_integration_stomp(self, version): client = Stomp(self.getConfig(version)) try: client.connect(host=VIRTUALHOST, versions=[version]) except StompProtocolError as e: print('Broker does not support STOMP protocol %s. Skipping this test case. [%s]' % (e, version)) return client.send(self.DESTINATION, b'test message 1') client.send(self.DESTINATION, b'test message 2') self.assertFalse(client.canRead(self.TIMEOUT)) token = client.subscribe(self.DESTINATION, {StompSpec.ID_HEADER: 4711, StompSpec.ACK_HEADER: StompSpec.ACK_CLIENT_INDIVIDUAL}) self.assertTrue(client.canRead(self.TIMEOUT)) client.ack(client.receiveFrame()) self.assertTrue(client.canRead(self.TIMEOUT)) client.ack(client.receiveFrame()) self.assertFalse(client.canRead(self.TIMEOUT)) client.unsubscribe(token) client.send(self.DESTINATION, b'test message 3', receipt='4711') self.assertTrue(client.canRead(self.TIMEOUT)) self.assertEqual(client.receiveFrame(), StompFrame(StompSpec.RECEIPT, {StompSpec.RECEIPT_ID_HEADER: '4711'})) self.assertFalse(client.canRead(self.TIMEOUT)) client.subscribe(self.DESTINATION, {StompSpec.ID_HEADER: 4711, StompSpec.ACK_HEADER: StompSpec.ACK_CLIENT_INDIVIDUAL}) self.assertTrue(client.canRead(self.TIMEOUT)) client.ack(client.receiveFrame()) self.assertFalse(client.canRead(self.TIMEOUT)) client.disconnect(receipt='4712') self.assertEqual(client.receiveFrame(), StompFrame(StompSpec.RECEIPT, {StompSpec.RECEIPT_ID_HEADER: '4712'})) self.assertRaises(StompConnectionError, client.receiveFrame) client.connect(host=VIRTUALHOST) client.disconnect(receipt='4711') self.assertEqual(client.receiveFrame(), StompFrame(StompSpec.RECEIPT, {StompSpec.RECEIPT_ID_HEADER: '4711'})) client.close() self.assertRaises(StompConnectionError, client.canRead, 0)
def test_4_integration_stomp_1_1(self): if StompSpec.VERSION_1_1 not in commands.versions(VERSION): print 'This broker does not support STOMP protocol version 1.1' return client = Stomp(self.getConfig(StompSpec.VERSION_1_1)) client.connect(host=VIRTUALHOST) client.send(self.DESTINATION, 'test message 1') client.send(self.DESTINATION, 'test message 2') self.assertFalse(client.canRead(self.TIMEOUT)) token = client.subscribe(self.DESTINATION, {StompSpec.ID_HEADER: 4711, StompSpec.ACK_HEADER: 'client-individual'}) self.assertTrue(client.canRead(self.TIMEOUT)) client.ack(client.receiveFrame()) self.assertTrue(client.canRead(self.TIMEOUT)) client.ack(client.receiveFrame()) self.assertFalse(client.canRead(self.TIMEOUT)) client.unsubscribe(token) client.send(self.DESTINATION, 'test message 3', receipt='4711') self.assertTrue(client.canRead(self.TIMEOUT)) self.assertEquals(client.receiveFrame(), StompFrame(StompSpec.RECEIPT, {'receipt-id': '4711'})) self.assertFalse(client.canRead(self.TIMEOUT)) client.subscribe(self.DESTINATION, {StompSpec.ID_HEADER: 4711, StompSpec.ACK_HEADER: 'client-individual'}) self.assertTrue(client.canRead(self.TIMEOUT)) client.ack(client.receiveFrame()) self.assertFalse(client.canRead(self.TIMEOUT)) client.disconnect(receipt='4712') self.assertEquals(client.receiveFrame(), StompFrame(StompSpec.RECEIPT, {'receipt-id': '4712'})) self.assertRaises(StompConnectionError, client.receiveFrame) client.connect(host=VIRTUALHOST) client.disconnect(receipt='4711') self.assertEquals(client.receiveFrame(), StompFrame(StompSpec.RECEIPT, {'receipt-id': '4711'})) client.close() self.assertRaises(StompConnectionError, client.canRead, 0)
def main(): logging.basicConfig() logging.getLogger().setLevel(logging.WARN) client = Stomp(stomp_config) client.connect() client.send(stomp_queue, body=stomp_body) client.subscribe(stomp_queue, {StompSpec.ACK_HEADER: StompSpec.ACK_CLIENT, 'activemq.prefetchSize': 1}) if client.canRead(timeout=5): frame = client.receiveFrame() print 'Got %s' % frame.info() client.ack(frame) frame_body = str(frame.body) if frame_body == stomp_body: print "OK: Message received" status = 'ok' else: print "WARNING: Incorrect message body; is %s, should be %s" % (frame_body, stomp_body) status = 'warning' else: print "CRITICAL: Timed out while trying to collect the message" status = 'critical' client.disconnect() client.close(flush=True) return exit_codes[status]
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()
class ActiveMQSession(object): """ Create a scoped session for every request and closes it when the request ends. """ def __init__(self, stompconf): self.client = Stomp(stompconf) def process_resource(self, req, resp, resource, params): self.client.connect() resource.activemq_conn = self.client def process_response(self, req, resp, resource, req_succeeded): if hasattr(resource, 'activemq_conn'): self.client.disconnect() self.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()
from stompest.config import StompConfig from stompest.sync import Stomp user = os.getenv('APOLLO_USER') or 'admin' password = os.getenv('APOLLO_PASSWORD') or 'password' host = os.getenv('APOLLO_HOST') or 'localhost' port = int(os.getenv('APOLLO_PORT') or 61613) destination = sys.argv[1:2] or ['/topic/event'] destination = destination[0] messages = 10000 data = 'Hello World from Python' config = StompConfig('tcp://%s:%d' % (host, port), login=user, passcode=password, version='1.1') client = Stomp(config) client.connect(host='mybroker') count = 0 start = time.time() for _ in xrange(messages): client.send(destination=destination, body=data, headers={'persistent': 'false'}) count += 1 diff = time.time() - start print 'Sent %s frames in %f seconds' % (count, diff) client.disconnect(receipt='bye') client.receiveFrame() client.close()
import time from stompest.config import StompConfig from stompest.sync import Stomp user = os.getenv('APOLLO_USER') or 'admin' password = os.getenv('APOLLO_PASSWORD') or 'password' host = os.getenv('APOLLO_HOST') or 'localhost' port = int(os.getenv('APOLLO_PORT') or 61613) destination = sys.argv[1:2] or ['/topic/event'] destination = destination[0] data = 'Hello World from Python' config = StompConfig('tcp://%s:%d' % (host, port), login=user, passcode=password, version='1.1') client = Stomp(config) client.connect(host='mybroker') print 'Enter SHUTDOWN to exist.' while data != 'SHUTDOWN': data = str(raw_input('Enter message to send to %s:' % destination)) client.send(destination=destination, body=data, headers={'persistent': 'false'}) # Send the 'SHUTDOWN' message to stop all listeners. client.send(destination=destination, body=data, headers={'persistent': 'false'}) client.disconnect(receipt='bye') client.receiveFrame() client.close()
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]
client.send(destination=destination, body="scai.fhg.de/voc/ccg", headers=headers) for i in queries: client.send(destination=destination, body="scai.fhg.de/concept/" + str(i), headers=headers) print u"# ErasmusMC ontology file".encode('utf-8') print u"VR 0.0".encode('utf-8') print u"ON CCG_Ontology".encode('utf-8') print u"--".encode('utf-8') @timeout(1) def receiveFrames(): frame = clientConsumer.receiveFrame() xml = ElementTree.fromstring(frame.body) modelText = xml.find('docelem').find('model').text if (modelText is not None): print unicode(modelText).encode('utf-8') print u"--".encode('utf-8') for reply in queries: receiveFrames() client.disconnect(receipt='bye') client.receiveFrame() client.close() clientConsumer.disconnect(receipt='bye') clientConsumer.receiveFrame() clientConsumer.close()
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 JMSClient(object): """Class JMSClient """ _mh = None _client = None _host = None _port = None _user = None _passw = None _verbose = None _is_connected = None def __init__(self, verbose=False): """Class constructor Called when the object is initialized Args: verbose (bool): verbose mode """ try: self._mh = MasterHead.get_head() self._verbose = verbose if (self._verbose): basicConfig() getLogger().setLevel(DEBUG) except StompError as ex: self._mh.demsg('htk_on_error', ex, self._mh.fromhere()) @property def client(self): """ STOMP client property getter """ return self._client @property def host(self): """ server host property getter """ return self._host @property def port(self): """ server port property getter """ return self._port @property def user(self): """ username property getter """ return self._user @property def passw(self): """ user password property getter """ return self._passw @property def verbose(self): """ verbose mode property getter """ return self._verbose @property def is_connected(self): """ is_connected property getter """ return self._is_connected def connect(self, host, port=61613, user=None, passw=None, timeout=10): """Method connects to server Args: host (str): hostname port (str): port user (str): username passw (str): password timeout (int): timeout Returns: bool: result Raises: event: jms_before_connect event: jms_after_connected """ try: msg = 'host:{0}, port:{1}, user:{2}, passw:{3}, timeout:{4}'.format( host, port, user, passw, timeout) self._mh.demsg('htk_on_debug_info', self._mh._trn.msg( 'htk_jms_connecting', msg), self._mh.fromhere()) ev = event.Event( 'jms_before_connect', host, port, user, passw, timeout) if (self._mh.fire_event(ev) > 0): host = ev.argv(0) port = ev.argv(1) user = ev.argv(2) passw = ev.argv(3) timeout = ev.argv(4) self._host = host self._port = port self._user = user self._passw = passw if (ev.will_run_default()): self._client = Stomp(StompConfig('tcp://{0}:{1}'.format(self._host, self._port), login=self._user, passcode=self._passw)) self._client.connect( connectTimeout=timeout, connectedTimeout=timeout) self._is_connected = True self._mh.demsg('htk_on_debug_info', self._mh._trn.msg( 'htk_jms_connected'), self._mh.fromhere()) ev = event.Event('jms_after_connect') self._mh.fire_event(ev) return True except StompError as ex: self._mh.demsg('htk_on_error', ex, self._mh.fromhere()) return False def disconnect(self): """Method disconnects from server Args: none Returns: bool: result """ try: self._mh.demsg('htk_on_debug_info', self._mh._trn.msg( 'htk_jms_disconnecting'), self._mh.fromhere()) if (not self._is_connected): self._mh.demsg('htk_on_warning', self._mh._trn.msg( 'htk_jms_not_connected'), self._mh.fromhere()) return False else: self._client.disconnect() self._client.close() self._is_connected = False self._mh.demsg('htk_on_debug_info', self._mh._trn.msg( 'htk_jms_disconnected'), self._mh.fromhere()) return True except StompError as ex: self._mh.demsg('htk_on_error', ex, self._mh.fromhere()) return False def send(self, destination_name, message, destination_type='queue', headers={}): """Method sends message JMS headers - JMSCorrelationID, JMSExpiration, JMSDeliveryMode, JMSPriority, JMSReplyTo, JMSType Args: destination_name (str): queue|topic name message (str): message destination_type (str): queue|topic headers (dict): JMS headers, key - title, value - string Returns: bool: result Raises: event: jms_before_send event: jms_after_send """ try: msg = 'destination_name:{0}, message:{1}, destination_type:{2}, headers:{3}'.format( destination_name, message, destination_type, headers) self._mh.demsg('htk_on_debug_info', self._mh._trn.msg( 'htk_jms_sending_msg', msg), self._mh.fromhere()) if (not self._is_connected): self._mh.demsg('htk_on_warning', self._mh._trn.msg( 'htk_jms_not_connected'), self._mh.fromhere()) return False ev = event.Event( 'jms_before_send', destination_name, message, destination_type, headers) if (self._mh.fire_event(ev) > 0): destination_name = ev.argv(0) message = ev.argv(1) destination_type = ev.argv(2) headers = ev.argv(3) if (ev.will_run_default()): headers_new = {} for key, value in headers.items(): if (key in mapping): headers_new[mapping[key]] = value self._client.send('/{0}/{1}'.format(destination_type, destination_name), message if ( version_info[0] == 2) else message.encode('utf-8'), headers_new) self._mh.demsg('htk_on_debug_info', self._mh._trn.msg( 'htk_jms_msg_sent'), self._mh.fromhere()) ev = event.Event('jms_after_send') self._mh.fire_event(ev) return True except StompError as ex: self._mh.demsg('htk_on_error', ex, self._mh.fromhere()) return False def receive(self, destination_name, cnt=1): """Method receives messages Args: destination_name (str): queue name cnt (int): count of messages Returns: list: messages as dictionary {'message', JMS headers} Raises: event: jms_before_receive event: jms_after_receive """ try: msg = 'destination_name:{0}, count:{1}'.format( destination_name, cnt) self._mh.demsg('htk_on_debug_info', self._mh._trn.msg( 'htk_jms_receiving_msg', msg), self._mh.fromhere()) if (not self._is_connected): self._mh.demsg('htk_on_warning', self._mh._trn.msg( 'htk_jms_not_connected'), self._mh.fromhere()) return None ev = event.Event('jms_before_receive', destination_name, cnt) if (self._mh.fire_event(ev) > 0): destination_name = ev.argv(0) cnt = ev.argv(1) if (ev.will_run_default()): token = self._client.subscribe('/queue/{0}'.format(destination_name), {StompSpec.ACK_HEADER: StompSpec.ACK_CLIENT_INDIVIDUAL}) msgs = [] i = 0 while (i < cnt and self._client.canRead(1)): frame = self._client.receiveFrame() if (frame.command != 'MESSAGE'): break self._client.ack(frame) msgs.append(frame) i = i + 1 self._client.unsubscribe(token) messages = [] for msg in msgs: message = {} message['message'] = msg.body.decode() for header in msg.rawHeaders: if (header[0] in mapping.values()): message[ list(mapping.keys())[list(mapping.values()).index(header[0])]] = header[1] messages.append(message) self._mh.demsg('htk_on_debug_info', self._mh._trn.msg( 'htk_jms_msg_received', len(messages)), self._mh.fromhere()) ev = event.Event('jms_after_receive') self._mh.fire_event(ev) return messages except StompError as ex: self._mh.demsg('htk_on_error', ex, self._mh.fromhere()) return None def browse(self, destination_name, cnt=100, jms_correlation_id=None, jms_type=None): """Method browses queue Args: destination_name (str): queue name cnt (int): count of messages jms_correlation_id (str): requested JMSCorrelationID jms_type (str): requested JMSType Returns: list: messages as dictionary {'message', JMS headers} Raises: event: jms_before_browse event: jms_after_browse """ try: msg = 'destination_name:{0}, count:{1}, jms_correlation_id:{2}, jms_type:{3}'.format( destination_name, cnt, jms_correlation_id, jms_type) self._mh.demsg('htk_on_debug_info', self._mh._trn.msg( 'htk_jms_browsing', msg), self._mh.fromhere()) if (not self._is_connected): self._mh.demsg('htk_on_warning', self._mh._trn.msg( 'htk_jms_not_connected'), self._mh.fromhere()) return None ev = event.Event( 'jms_before_browse', destination_name, cnt, jms_correlation_id, jms_type) if (self._mh.fire_event(ev) > 0): destination_name = ev.argv(0) cnt = ev.argv(1) jms_correlation_id = ev.argv(2) jms_type = ev.argv(3) if (ev.will_run_default()): token = self._client.subscribe('/queue/{0}'.format(destination_name), {StompSpec.ACK_HEADER: StompSpec.ACK_CLIENT_INDIVIDUAL}) msgs = [] i = 0 while (i < cnt and self._client.canRead(1)): frame = self._client.receiveFrame() correlation_id = None type = None for header in frame.rawHeaders: if (header[0] == 'correlation-id'): correlation_id = header[1] elif (header[0] == 'type'): type = header[1] if ((jms_correlation_id == None or jms_correlation_id == correlation_id) and (jms_type == None or jms_type == type)): msgs.append(frame) i = i + 1 self._client.unsubscribe(token) messages = [] for msg in msgs: message = {} message['message'] = msg.body.decode() for header in msg.rawHeaders: if (header[0] in mapping.values()): message[ list(mapping.keys())[list(mapping.values()).index(header[0])]] = header[1] messages.append(message) self._mh.demsg('htk_on_debug_info', self._mh._trn.msg( 'htk_jms_msg_received', len(messages)), self._mh.fromhere()) ev = event.Event('jms_after_browse') self._mh.fire_event(ev) return messages except StompError as ex: self._mh.demsg('htk_on_error', ex, self._mh.fromhere()) return None