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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 two programs designed to be used
+ * together. These programs implement a publish-subscribe example
+ * using the "amq.topic" exchange.
+ *
+ * topic_publisher.cpp (this program)
+ *
+ * Sends messages to the "amq.topic" exchange, using the
+ * multipart routing keys "usa.news", "usa.weather",
+ * "europe.news", and "europe.weather".
+ *
+ * topic_listener.cpp
+ *
+ * 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/AsyncSession.h>
+#include <qpid/client/Message.h>
+
+
+#include <cstdlib>
+#include <iostream>
+
+#include <sstream>
+
+using namespace qpid::client;
+using namespace qpid::framing;
+
+using std::stringstream;
+using std::string;
+
+void publish_messages(Session& session, string routing_key)
+{
+ Message message;
+
+ // Set the routing key once, we'll use the same routing key for all
+ // messages.
+
+ message.getDeliveryProperties().setRoutingKey(routing_key);
+ for (int i=0; i<5; i++) {
+ stringstream message_data;
+ message_data << "Message " << i;
+
+ message.setData(message_data.str());
+ // Asynchronous transfer sends messages as quickly as
+ // possible without waiting for confirmation.
+ async(session).messageTransfer(arg::content=message, arg::destination="amq.topic");
+ }
+
+}
+
+/*
+ * no_more_messages()
+ *
+ * Send a message to indicate that no more messages are coming.
+ * Use the 'control' routing key (see comments in topic_config_queues.cpp).
+ *
+ */
+
+void no_more_messages(Session& session)
+{
+ Message message;
+
+ message.getDeliveryProperties().setRoutingKey("control");
+ message.setData("That's all, folks!");
+ session.messageTransfer(arg::content=message, arg::destination="amq.topic");
+}
+
+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 --------------------------------------------
+
+ publish_messages(session, "usa.news");
+ publish_messages(session, "usa.weather");
+ publish_messages(session, "europe.news");
+ publish_messages(session, "europe.weather");
+
+ no_more_messages(session);
+
+ //-----------------------------------------------------------------------------
+
+ connection.close();
+ return 0;
+ } catch(const std::exception& error) {
+ std::cout << error.what() << std::endl;
+ }
+ return 1;
+}
+
+