diff options
Diffstat (limited to 'python/examples/headers/headers_consumer.py')
-rwxr-xr-x | python/examples/headers/headers_consumer.py | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/python/examples/headers/headers_consumer.py b/python/examples/headers/headers_consumer.py new file mode 100755 index 0000000000..8f5ce3c5ff --- /dev/null +++ b/python/examples/headers/headers_consumer.py @@ -0,0 +1,107 @@ +#!/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. +# +""" + headers_consumer.py + + This AMQP client reads messages from two message + queues named "first" and "second". +""" + +import qpid +import sys +import os +from random import randint +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())) + +#----- Read from queue -------------------------------------------- + +# Now let's create two local client queues and tell them to read +# incoming messages. + +# The consumer tag identifies the client-side queue. + +local_queue_name_first = "local_queue_first" +local_queue_name_second = "local_queue_second" + +queue_first = session.incoming(local_queue_name_first) +queue_second = session.incoming(local_queue_name_second) + +# Call message_subscribe() to tell the broker to deliver messages +# from the AMQP queue to these local client queues. The broker will +# start delivering messages as soon as credit is allocated using +# queue.start(). + +session.message_subscribe(queue="first", destination=local_queue_name_first) +session.message_subscribe(queue="second", destination=local_queue_name_second) + +queue_first.start() +queue_second.start() + +# 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 + +message = None +while content != final: + message = queue_first.get(timeout=10) + content = message.body + session.message_accept(RangedSet(message.id)) + print content + +content = "" +while content != final: + message = queue_second.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) |