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+/*
+ *
+ * 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_publisher.cpp:
+ *
+ * This program is one of three programs designed to be used
+ * together. These programs implement a publish-subscribe example
+ * using the "amq.topic" exchange. In the example multiple listeners
+ * can subscribe to the same queues for TTL messages.
+ * The TTL messages are all ticker price data. Messages are
+ * browsed and therefore shared among the multiple listeners.
+ * Messages timeout using TTL so that they don't stay in the queue
+ * for too long and fill it up.
+ * Local exclusive LVQ are also declared for market data.
+ *
+ * declare_queues.cpp
+ *
+ * Declares several non-exclusive queues bound to the amq:topic exchange
+ *
+ * topic_publisher.cpp
+ *
+ * Sends messages to the "amq.topic" exchange, using the
+ * multipart routing keys for ticker price and market data
+ * Ticker messages are sent using a TTL value.
+ *
+ * topic_listener.cpp (this program)
+ *
+ * Subscribes to non-exclusive queues in NOT_ACQUIRE mode for
+ * ticker price data and declares two LVQs for market data.
+ *
+ * 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 "qpid/client/QueueOptions.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 subscribeTTLQueue(std::string queue);
+ virtual void subscribeLVQQueue(std::string queue);
+ 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::subscribeTTLQueue(std::string queue) {
+
+ /*
+ * Subscribe to the queue using the subscription manager.
+ * The queues were declared elsewhere alog with their bindings.
+ */
+
+ std::cout << "Subscribing to queue " << queue << std::endl;
+ subscriptions.subscribe(*this, queue);
+ // Will not acquire messages but instead browse them.
+ subscriptions.setAcquireMode(message::ACQUIRE_MODE_NOT_ACQUIRED);
+}
+
+void Listener::subscribeLVQQueue(std::string queue) {
+
+ /*
+ * Declare and subscribe to the queue using the subscription manager.
+ */
+
+ QueueOptions qo;
+ qo.setOrdering(LVQ);
+ std::string binding = queue + ".#";
+ queue += session.getId().getName();
+ session.queueDeclare(arg::queue=queue, arg::exclusive=true, arg::arguments=qo);
+ session.exchangeBind(arg::exchange="amq.topic", arg::queue=queue, arg::bindingKey=binding);
+ std::cout << "Declared queue " << queue << " non-exclusive with amq:topic binding " << binding << std::endl;
+ std::cout << "Subscribing to queue " << queue << std::endl;
+ subscriptions.subscribe(*this, queue, SubscriptionSettings(FlowControl::unlimited(), ACCEPT_MODE_NONE));
+
+}
+
+void Listener::received(Message& message) {
+ // If you want to see the destination you can swap the following lines.
+ // std::cout << message.getDestination() << "\t" << message.getData() << std::endl;
+ std::cout << message.getData() << std::endl;
+
+}
+
+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;
+
+ 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.subscribeTTLQueue("TICKER.NASDAQ");
+ listener.subscribeTTLQueue("TICKER.NYSE");
+
+ listener.subscribeLVQQueue("MRKT.NASDAQ");
+ listener.subscribeLVQQueue("MRKT.NYSE");
+
+ std::cout << "Starting Listener <Ctrl>-C to exit." << std::endl;
+ 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;
+}
+
+