Github user gemmellr commented on a diff in the pull request:
https://github.com/apache/qpid-jms/pull/6#discussion_r115541734
--- Diff:
qpid-jms-examples/src/main/java/org/apache/qpid/jms/example/Server.java ---
@@ -0,0 +1,119 @@
+/*
+ *
+ * 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.
+ *
+ */
+package org.apache.qpid.jms.example;
+
+import javax.jms.Connection;
+import javax.jms.ConnectionFactory;
+import javax.jms.DeliveryMode;
+import javax.jms.Destination;
+import javax.jms.ExceptionListener;
+import javax.jms.JMSException;
+import javax.jms.Message;
+import javax.jms.MessageConsumer;
+import javax.jms.MessageProducer;
+import javax.jms.Session;
+import javax.jms.TextMessage;
+import javax.jms.ObjectMessage;
+import javax.naming.Context;
+import javax.naming.InitialContext;
+import java.util.ArrayList;
+import java.util.Collections;
+
+public class Server {
+
+ public static void main(String[] args) throws Exception {
+ System.out.println("[SERVER] Awaiting Message...");
+
+ try {
+ // The configuration for the Qpid InitialContextFactory has
been supplied in
+ // a jndi.properties file in the classpath, which results
in it being picked
+ // up automatically by the InitialContext constructor.
+ Context context = new InitialContext();
+
+ ConnectionFactory factory = (ConnectionFactory)
context.lookup("myFactoryLookup");
+ Destination queue = (Destination)
context.lookup("myQueueLookup");
+
+ Connection connection =
factory.createConnection(System.getProperty("USER"),
System.getProperty("PASSWORD"));
+ connection.setExceptionListener(new MyExceptionListener());
+ connection.start();
+
+ Session session = connection.createSession(false,
Session.AUTO_ACKNOWLEDGE);
+
+
+ MessageConsumer messageConsumer =
session.createConsumer(queue);
+ while (true) {
+
+ long start = System.currentTimeMillis();
+
+ //Receive a message
+ Message receivedMessage =
messageConsumer.receive(0);
+
+ long finish = System.currentTimeMillis();
+ long taken = finish - start;
+
+ System.out.println("[SERVER] Received the message
in " + taken + "ms");
+
+ //Create new message to return to client
+ Destination replyDestination =
receivedMessage.getJMSReplyTo();
+ TextMessage newMessage =
session.createTextMessage(interpretMessage(receivedMessage));
+ MessageProducer messageProducer =
session.createProducer(null);
--- End diff --
MessageProducer instances need to be closed when you are finished using
them, this would currently be orphaning some resources each time. You also
typically create a long-lived anoynmous MessageProducers, so as to re-use them.
If you move the creation outside the while loop, you can then reuse a single
producer for sending all the subsequent responses.
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