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Diffstat (limited to 'trunk/qpid/python/examples/fanout/fanout_consumer.py')
-rwxr-xr-x | trunk/qpid/python/examples/fanout/fanout_consumer.py | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/trunk/qpid/python/examples/fanout/fanout_consumer.py b/trunk/qpid/python/examples/fanout/fanout_consumer.py new file mode 100755 index 0000000000..0452baa8da --- /dev/null +++ b/trunk/qpid/python/examples/fanout/fanout_consumer.py @@ -0,0 +1,99 @@ +#!/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. +# +""" + fanout_consumer.py + + This AMQP client reads messages from a message + queue named "message_queue". +""" +import qpid +import sys +import os +from qpid.util import connect +from qpid.connection import Connection +from qpid.datatypes import Message, RangedSet, uuid4 +from qpid.queue import Empty + +#----- Initialization -------------------------------------- + + +# Set parameters for login + +host="127.0.0.1" +port=5672 +user="guest" +password="guest" + +# If an alternate host or port has been specified, use that instead +# (this is used in our unit tests) +if len(sys.argv) > 1 : + host=sys.argv[1] +if len(sys.argv) > 2 : + port=int(sys.argv[2]) + +# Create a connection. +socket = connect(host, port) +connection = Connection (sock=socket, username=user, password=password) +connection.start() +session = connection.session(str(uuid4())) + + +#----- Main Body ------------------------------------------- + +# Create a server-side queue and route messages to it. +# The server-side queue must have a unique name. Use the +# session id for that. +server_queue_name = session.name +session.queue_declare(queue=server_queue_name) +session.exchange_bind(queue=server_queue_name, exchange="amq.fanout") + +# Create a local queue to receive messages from the server-side +# queue. +local_queue_name = "local_queue" +local_queue = session.incoming(local_queue_name) + +# Call message_subscribe() to tell the server to deliver messages +# from the AMQP queue to this local client queue. + +session.message_subscribe(queue=server_queue_name, destination=local_queue_name) +local_queue.start() + +print "Subscribed to queue " + server_queue_name +sys.stdout.flush() + +# Initialize 'final' and 'content', variables used to identify the last message. +final = "That's all, folks!" # In a message body, signals the last message +content = "" # Content of the last message read + +# Read the messages - acknowledge each one +message = None +while content != final: + message = local_queue.get(timeout=10) + content = message.body + session.message_accept(RangedSet(message.id)) + print content + + +#----- Cleanup ------------------------------------------------ + +# Clean up before exiting so there are no open threads. +# + +session.close(timeout=10) |