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Diffstat (limited to 'trunk/qpid/cpp/examples/pub-sub/topic_listener.cpp')
| -rw-r--r-- | trunk/qpid/cpp/examples/pub-sub/topic_listener.cpp | 173 |
1 files changed, 0 insertions, 173 deletions
diff --git a/trunk/qpid/cpp/examples/pub-sub/topic_listener.cpp b/trunk/qpid/cpp/examples/pub-sub/topic_listener.cpp deleted file mode 100644 index d38a806303..0000000000 --- a/trunk/qpid/cpp/examples/pub-sub/topic_listener.cpp +++ /dev/null @@ -1,173 +0,0 @@ -/* - * - * 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_listener.cpp: - * - * This program is one of two programs designed to be used - * together. These programs implement a publish-subscribe example - * using the "amq.topic" exchange. - * - * topic_publisher.cpp - * - * Sends messages to the "amq.topic" exchange, using the - * multipart routing keys "usa.news", "usa.weather", - * "europe.news", and "europe.weather". - * - * topic_listener.cpp (this program) - * - * Creates private queues for "news", "weather", "usa", and - * "europe", binding them to the amq.topic exchange using - * bindings that match the corresponding parts of the multipart - * routing keys. - * - * Multiple listeners can be run at the same time. - * - */ - -#include <qpid/client/Connection.h> -#include <qpid/client/Session.h> -#include <qpid/client/Message.h> -#include <qpid/client/MessageListener.h> -#include <qpid/client/SubscriptionManager.h> - -#include <cstdlib> -#include <iostream> - -using namespace qpid::client; -using namespace qpid::framing; - - -class Listener : public MessageListener { - private: - Session& session; - SubscriptionManager subscriptions; - public: - Listener(Session& session); - virtual void prepareQueue(std::string queue, std::string exchange, std::string routing_key); - virtual void received(Message& message); - virtual void listen(); - ~Listener() { }; -}; - - -/* - * Listener::Listener - * - * Subscribe to the queue, route it to a client destination for the - * listener. (The destination name merely identifies the destination - * in the listener, you can use any name as long as you use the same - * name for the listener). - */ - -Listener::Listener(Session& session) : - session(session), - subscriptions(session) -{ -} - - -void Listener::prepareQueue(std::string queue, std::string exchange, std::string routing_key) { - - /* Create a unique queue name for this consumer by concatenating - * the queue name parameter with the Session ID. - */ - - queue += session.getId().getName(); - std::cout << "Declaring queue: " << queue << std::endl; - - /* Declare an exclusive queue on the broker - */ - - session.queueDeclare(arg::queue=queue, arg::exclusive=true, arg::autoDelete=true); - - /* Route messages to the new queue if they match the routing key. - * - * Also route any messages to with the "control" routing key to - * this queue so we know when it's time to stop. A publisher sends - * a message with the content "That's all, Folks!", using the - * "control" routing key, when it is finished. - */ - - session.exchangeBind(arg::exchange=exchange, arg::queue=queue, arg::bindingKey=routing_key); - session.exchangeBind(arg::exchange=exchange, arg::queue=queue, arg::bindingKey="control"); - - /* - * subscribe to the queue using the subscription manager. - */ - - std::cout << "Subscribing to queue " << queue << std::endl; - subscriptions.subscribe(*this, queue); -} - -void Listener::received(Message& message) { - std::cout << "Message: " << message.getData() << " from " << message.getDestination() << std::endl; - - if (message.getData() == "That's all, folks!") { - std::cout << "Shutting down listener for " << message.getDestination() << std::endl; - subscriptions.cancel(message.getDestination()); - } -} - -void Listener::listen() { - // Receive messages - subscriptions.run(); -} - -int main(int argc, char** argv) { - const char* host = argc>1 ? argv[1] : "127.0.0.1"; - int port = argc>2 ? atoi(argv[2]) : 5672; - std::string exchange = argc>3 ? argv[3] : "amq.topic"; - Connection connection; - try { - connection.open(host, port); - Session session = connection.newSession(); - - //--------- Main body of program -------------------------------------------- - - // Create a listener for the session - - Listener listener(session); - - // Subscribe to messages on the queues we are interested in - - listener.prepareQueue("usa", exchange, "usa.#"); - listener.prepareQueue("europe", exchange, "europe.#"); - listener.prepareQueue("news", exchange, "#.news"); - listener.prepareQueue("weather", exchange, "#.weather"); - - std::cout << "Listening for messages ..." << std::endl; - - // Give up control and receive messages - listener.listen(); - - - //----------------------------------------------------------------------------- - - connection.close(); - return 0; - } catch(const std::exception& error) { - std::cout << error.what() << std::endl; - } - return 1; -} - - |