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Diffstat (limited to 'java/client/example/src/main/java/org/apache/qpid/example/amqpexample/lvq/Listener.java')
-rw-r--r-- | java/client/example/src/main/java/org/apache/qpid/example/amqpexample/lvq/Listener.java | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/java/client/example/src/main/java/org/apache/qpid/example/amqpexample/lvq/Listener.java b/java/client/example/src/main/java/org/apache/qpid/example/amqpexample/lvq/Listener.java new file mode 100644 index 0000000000..e17d3eef9f --- /dev/null +++ b/java/client/example/src/main/java/org/apache/qpid/example/amqpexample/lvq/Listener.java @@ -0,0 +1,115 @@ +package org.apache.qpid.example.amqpexample.lvq; +/* + * + * 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. + * + */ + + +import org.apache.qpid.transport.Connection; +import org.apache.qpid.transport.MessageAcceptMode; +import org.apache.qpid.transport.MessageAcquireMode; +import org.apache.qpid.transport.MessageCreditUnit; +import org.apache.qpid.transport.MessageTransfer; +import org.apache.qpid.transport.Session; +import org.apache.qpid.transport.SessionException; +import org.apache.qpid.transport.SessionListener; + +import java.util.concurrent.CountDownLatch; +import java.util.concurrent.TimeUnit; + +/** + * This listens to messages on a queue and terminates + * when it sees the final message + * + */ +public class Listener implements SessionListener +{ + private static CountDownLatch _countDownLatch = new CountDownLatch(1); + + public void opened(Session ssn) {} + + public void resumed(Session ssn) {} + + public void message(Session ssn, MessageTransfer xfr) + { + String body = xfr.getBodyString(); + System.out.println("Message: " + body); + if ( body.equals("That's all, folks!")) + { + System.out.println("Received final message"); + _countDownLatch.countDown(); + } + } + + public void exception(Session ssn, SessionException exc) + { + exc.printStackTrace(); + } + + public void closed(Session ssn) {} + + /** + * This sends 10 messages to the + * amq.direct exchange using the + * routing key as "routing_key" + * + * @param args + */ + public static void main(String[] args) throws InterruptedException + { + // Create connection + Connection con = new Connection(); + con.connect("localhost", 5672, "test", "guest", "guest",false); + + // Create session + Session session = con.createSession(0); + + // Create an instance of the listener + Listener listener = new Listener(); + session.setSessionListener(listener); + + // create a subscription + session.messageSubscribe("message_queue", + "listener_destination", + MessageAcceptMode.NONE, + MessageAcquireMode.PRE_ACQUIRED, + null, 0, null); + + + // issue credits + // XXX + session.messageFlow("listener_destination", MessageCreditUnit.BYTE, Session.UNLIMITED_CREDIT); + session.messageFlow("listener_destination", MessageCreditUnit.MESSAGE, 11); + + // confirm completion + session.sync(); + + // wait to receive all the messages + System.out.println("Waiting 100 seconds for messages from listener_destination"); + + _countDownLatch.await(30, TimeUnit.SECONDS); + System.out.println("Shutting down listener for listener_destination"); + session.messageCancel("listener_destination"); + + //cleanup + session.close(); + con.close(); + } + +} |