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Diffstat (limited to 'M4-RCs/qpid/python/examples/pubsub/topic_subscriber.py')
-rwxr-xr-x | M4-RCs/qpid/python/examples/pubsub/topic_subscriber.py | 154 |
1 files changed, 0 insertions, 154 deletions
diff --git a/M4-RCs/qpid/python/examples/pubsub/topic_subscriber.py b/M4-RCs/qpid/python/examples/pubsub/topic_subscriber.py deleted file mode 100755 index 489c7cbb19..0000000000 --- a/M4-RCs/qpid/python/examples/pubsub/topic_subscriber.py +++ /dev/null @@ -1,154 +0,0 @@ -#!/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. -# -""" - topic_subscriber.py - - This subscriber creates private queues and binds them - to the topics 'usa.#', 'europe.#', '#.news', and '#.weather'. -""" - -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 - -#----- Functions ------------------------------------------- - -def dump_queue(queue): - - content = "" # Content of the last message read - final = "That's all, folks!" # In a message body, signals the last message - message = 0 - - while content != final: - try: - message = queue.get(timeout=10) - content = message.body - session.message_accept(RangedSet(message.id)) - print content - except Empty: - print "No more messages!" - return - - - -def subscribe_queue(server_queue_name, local_queue_name): - - print "Subscribing local queue '" + local_queue_name + "' to " + server_queue_name + "'" - - queue = session.incoming(local_queue_name) - - session.message_subscribe(queue=server_queue_name, destination=local_queue_name) - queue.start() - - return queue - -#----- 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 -- ---------------------------------------- - -# declare queues on the server - -news = "news-" + session.name -weather = "weather-" + session.name -usa = "usa-" + session.name -europe = "europe-" + session.name - -session.queue_declare(queue=news, exclusive=True) -session.queue_declare(queue=weather, exclusive=True) -session.queue_declare(queue=usa, exclusive=True) -session.queue_declare(queue=europe, exclusive=True) - -# Routing keys may be "usa.news", "usa.weather", "europe.news", or "europe.weather". - -# The '#' symbol matches one component of a multipart name, e.g. "#.news" matches -# "europe.news" or "usa.news". - -session.exchange_bind(exchange="amq.topic", queue=news, binding_key="#.news") -session.exchange_bind(exchange="amq.topic", queue=weather, binding_key="#.weather") -session.exchange_bind(exchange="amq.topic", queue=usa, binding_key="usa.#") -session.exchange_bind(exchange="amq.topic", queue=europe, binding_key="europe.#") - -# Bind each queue to the control queue so we know when to stop - -session.exchange_bind(exchange="amq.topic", queue=news, binding_key="control") -session.exchange_bind(exchange="amq.topic", queue=weather, binding_key="control") -session.exchange_bind(exchange="amq.topic", queue=usa, binding_key="control") -session.exchange_bind(exchange="amq.topic", queue=europe, binding_key="control") - -# Remind the user to start the topic producer - -print "Queues created - please start the topic producer" -sys.stdout.flush() - -# Subscribe local queues to server queues - -local_news = "local_news" -local_weather = "local_weather" -local_usa = "local_usa" -local_europe = "local_europe" - -local_news_queue = subscribe_queue(news, local_news) -local_weather_queue = subscribe_queue(weather, local_weather) -local_usa_queue = subscribe_queue(usa, local_usa) -local_europe_queue = subscribe_queue(europe, local_europe) - -# Call dump_queue to print messages from each queue - -print "Messages on 'news' queue:" -dump_queue(local_news_queue) - -print "Messages on 'weather' queue:" -dump_queue(local_weather_queue) - -print "Messages on 'usa' queue:" -dump_queue(local_usa_queue) - -print "Messages on 'europe' queue:" -dump_queue(local_europe_queue) - -#----- Cleanup ------------------------------------------------ - -# Clean up before exiting so there are no open threads. - -session.close(timeout=10) |