| #!/usr/bin/env python |
| # |
| # 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. |
| # |
| |
| """ |
| Demonstrates the client side of the synchronous request-response pattern |
| (also known as RPC or Remote Procedure Call) using proton. |
| |
| """ |
| from __future__ import print_function, unicode_literals |
| |
| import optparse |
| from proton import Message, Url, ConnectionException, Timeout |
| from proton.utils import SyncRequestResponse, BlockingConnection |
| from proton.handlers import IncomingMessageHandler |
| import sys |
| |
| parser = optparse.OptionParser(usage="usage: %prog [options]", |
| description="Send requests to the supplied address and print responses.") |
| parser.add_option("-a", "--address", default="localhost:5672/examples", |
| help="address to which messages are sent (default %default)") |
| parser.add_option("-t", "--timeout", type="float", default=5, |
| help="Give up after this time out (default %default)") |
| opts, args = parser.parse_args() |
| |
| url = Url(opts.address) |
| client = SyncRequestResponse(BlockingConnection(url, timeout=opts.timeout), url.path) |
| |
| try: |
| REQUESTS = ["Twas brillig, and the slithy toves", |
| "Did gire and gymble in the wabe.", |
| "All mimsy were the borogroves,", |
| "And the mome raths outgrabe."] |
| for request in REQUESTS: |
| response = client.call(Message(body=request)) |
| print("%s => %s" % (request, response.body)) |
| finally: |
| client.connection.close() |