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AMBARI-20684. Implement a websocket adapter for stomp.py (aonishuk)
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69 changes: 69 additions & 0 deletions
69
ambari-agent/src/main/python/ambari_agent/client_example.py
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,69 @@ | ||
| ''' | ||
| Licensed to the Apache Software Foundation (ASF) under one | ||
| or more contributor license agreements. See the NOTICE file | ||
| distributed with this work for additional information | ||
| regarding copyright ownership. The ASF licenses this file | ||
| to you under the Apache License, Version 2.0 (the | ||
| "License"); you may not use this file except in compliance | ||
| with the License. You may obtain a copy of the License at | ||
| http://www.apache.org/licenses/LICENSE-2.0 | ||
| Unless required by applicable law or agreed to in writing, software | ||
| distributed under the License is distributed on an "AS IS" BASIS, | ||
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| See the License for the specific language governing permissions and | ||
| limitations under the License. | ||
| ''' | ||
|
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| # TODO: remove this | ||
|
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| import time | ||
| import ambari_stomp | ||
| from ambari_stomp.adapter import websocket | ||
| import base64 | ||
|
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| correlationId = 0 | ||
|
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| def get_headers(): | ||
| global correlationId | ||
| correlationId += 1 | ||
| headers = { | ||
| "content-type": "text/plain", | ||
| "correlationId": correlationId | ||
| } | ||
| return headers | ||
|
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| class MyListener(ambari_stomp.ConnectionListener): | ||
| def on_message(self, headers, message): | ||
| print('MyListener:\nreceived a message "{0}"\n'.format(message)) | ||
| global read_messages | ||
| print headers | ||
| print message | ||
| read_messages.append({'id': headers['message-id'], 'subscription':headers['subscription']}) | ||
|
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|
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| class MyStatsListener(ambari_stomp.StatsListener): | ||
| def on_disconnected(self): | ||
| super(MyStatsListener, self).on_disconnected() | ||
| print('MyStatsListener:\n{0}\n'.format(self)) | ||
|
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| read_messages = [] | ||
|
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| conn = websocket.WsConnection('ws://gc6401:8080/api/stomp/v1') | ||
| conn.transport.ws.extra_headers = [("Authorization", "Basic " + base64.b64encode('admin:admin'))] | ||
| conn.set_listener('my_listener', MyListener()) | ||
| conn.set_listener('stats_listener', MyStatsListener()) | ||
| conn.start() | ||
|
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| conn.connect(wait=True, headers=get_headers()) | ||
|
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| conn.subscribe(destination='/user/', id='sub-0', ack='client-individual') | ||
|
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| #conn.send(body="", destination='/test/time', headers=get_headers()) | ||
| conn.send(body="some message", destination='/test/echo', headers=get_headers()) | ||
| time.sleep(1) | ||
| for message in read_messages: | ||
| conn.ack(message['id'], message['subscription']) | ||
|
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| conn.disconnect() |
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106 changes: 106 additions & 0 deletions
106
ambari-common/src/main/python/ambari_stomp/adapter/websocket.py
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,106 @@ | ||
| ''' | ||
| Licensed to the Apache Software Foundation (ASF) under one | ||
| or more contributor license agreements. See the NOTICE file | ||
| distributed with this work for additional information | ||
| regarding copyright ownership. The ASF licenses this file | ||
| to you under the Apache License, Version 2.0 (the | ||
| "License"); you may not use this file except in compliance | ||
| with the License. You may obtain a copy of the License at | ||
| http://www.apache.org/licenses/LICENSE-2.0 | ||
| Unless required by applicable law or agreed to in writing, software | ||
| distributed under the License is distributed on an "AS IS" BASIS, | ||
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| See the License for the specific language governing permissions and | ||
| limitations under the License. | ||
| ''' | ||
|
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| import copy | ||
| import logging | ||
|
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| from Queue import Queue | ||
|
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| from ambari_stomp.connect import BaseConnection | ||
| from ambari_stomp.protocol import Protocol12 | ||
| from ambari_stomp.transport import Transport, DEFAULT_SSL_VERSION | ||
|
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| from ambari_ws4py.client.threadedclient import WebSocketClient | ||
|
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| logger = logging.getLogger(__name__) | ||
|
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| class QueuedWebSocketClient(WebSocketClient): | ||
| def __init__(self, *args, **kwargs): | ||
| WebSocketClient.__init__(self, *args, **kwargs) | ||
| self.messages = Queue() | ||
|
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| def received_message(self, message): | ||
| """ | ||
| Override the base class to store the incoming message | ||
| in the `messages` queue. | ||
| """ | ||
| self.messages.put(copy.deepcopy(message)) | ||
|
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| def receive(self): | ||
| """ | ||
| Returns messages that were stored into the | ||
| `messages` queue and returns `None` when the | ||
| websocket is terminated or closed. | ||
| """ | ||
| # If the websocket was terminated and there are no messages | ||
| # left in the queue, return None immediately otherwise the client | ||
| # will block forever | ||
| if self.terminated and self.messages.empty(): | ||
| return None | ||
| message = self.messages.get() | ||
| if message is StopIteration: | ||
| return None | ||
| return message | ||
|
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| def closed(self, code, reason=None): | ||
| self.messages.put(StopIteration) | ||
|
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| class WsTransport(Transport): | ||
| def __init__(self, url): | ||
| Transport.__init__(self, (0, 0), False, False, 0.0, 0.0, 0.0, 0.0, 0, False, None, None, None, None, False, | ||
| DEFAULT_SSL_VERSION, None, None, None) | ||
| self.current_host_and_port = (0, 0) # mocking | ||
| self.ws = QueuedWebSocketClient(url, protocols=['http-only', 'chat']) | ||
| self.ws.daemon = False | ||
|
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| def is_connected(self): | ||
| return self.connected | ||
|
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| def attempt_connection(self): | ||
| self.ws.connect() | ||
|
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| def send(self, encoded_frame): | ||
| logger.debug("Outgoing STOMP message:\n>>> " + encoded_frame) | ||
| self.ws.send(encoded_frame) | ||
|
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| def receive(self): | ||
| try: | ||
| msg = str(self.ws.receive()) | ||
| logger.debug("Incoming STOMP message:\n<<< " + msg) | ||
| return msg | ||
| except: | ||
| # exceptions from this method are hidden by the framework so implementing logging by ourselves | ||
| logger.exception("Exception while handling incoming STOMP message:") | ||
| return None | ||
|
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| def stop(self): | ||
| self.running = False | ||
| self.ws.close_connection() | ||
| self.disconnect_socket() | ||
| Transport.stop(self) | ||
|
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| class WsConnection(BaseConnection, Protocol12): | ||
| def __init__(self, url, wait_on_receipt=False): | ||
| self.transport = WsTransport(url) | ||
| self.transport.set_listener('ws-listener', self) | ||
| self.transactions = {} | ||
| Protocol12.__init__(self, self.transport, (0, 0)) | ||
|
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| def disconnect(self, receipt=None, headers=None, **keyword_headers): | ||
| Protocol12.disconnect(self, receipt, headers, **keyword_headers) | ||
| self.transport.stop() |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,67 @@ | ||
| # -*- coding: utf-8 -*- | ||
| # | ||
| # Redistribution and use in source and binary forms, with or without | ||
| # modification, are permitted provided that the following conditions are | ||
| # met: | ||
| # | ||
| # * Redistributions of source code must retain the above copyright | ||
| # notice, this list of conditions and the following disclaimer. | ||
| # * Redistributions in binary form must reproduce the above | ||
| # copyright notice, this list of conditions and the following disclaimer | ||
| # in the documentation and/or other materials provided with the | ||
| # distribution. | ||
| # * Neither the name of ambari_ws4py nor the names of its | ||
| # contributors may be used to endorse or promote products derived from | ||
| # this software without specific prior written permission. | ||
| # | ||
| # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | ||
| # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | ||
| # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | ||
| # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | ||
| # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | ||
| # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | ||
| # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | ||
| # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | ||
| # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | ||
| # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | ||
| # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
| # | ||
| import logging | ||
| import logging.handlers as handlers | ||
|
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| __author__ = "Sylvain Hellegouarch" | ||
| __version__ = "0.4.2" | ||
| __all__ = ['WS_KEY', 'WS_VERSION', 'configure_logger', 'format_addresses'] | ||
|
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| WS_KEY = b"258EAFA5-E914-47DA-95CA-C5AB0DC85B11" | ||
| WS_VERSION = (8, 13) | ||
|
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| def configure_logger(stdout=True, filepath=None, level=logging.INFO): | ||
| logger = logging.getLogger('ambari_ws4py') | ||
| logger.setLevel(level) | ||
| logfmt = logging.Formatter("[%(asctime)s] %(levelname)s %(message)s") | ||
|
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| if filepath: | ||
| h = handlers.RotatingFileHandler(filepath, maxBytes=10485760, backupCount=3) | ||
| h.setLevel(level) | ||
| h.setFormatter(logfmt) | ||
| logger.addHandler(h) | ||
|
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| if stdout: | ||
| import sys | ||
| h = logging.StreamHandler(sys.stdout) | ||
| h.setLevel(level) | ||
| h.setFormatter(logfmt) | ||
| logger.addHandler(h) | ||
|
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| return logger | ||
|
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| def format_addresses(ws): | ||
| me = ws.local_address | ||
| peer = ws.peer_address | ||
| if isinstance(me, tuple) and isinstance(peer, tuple): | ||
| me_ip, me_port = ws.local_address | ||
| peer_ip, peer_port = ws.peer_address | ||
| return "[Local => %s:%d | Remote => %s:%d]" % (me_ip, me_port, peer_ip, peer_port) | ||
|
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| return "[Bound to '%s']" % me |
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