1 files changed, 141 insertions, 0 deletions
diff --git a/qpid/java/client/example/src/main/java/org/apache/qpid/example/publisher/MonitorMessageDispatcher.java b/qpid/java/client/example/src/main/java/org/apache/qpid/example/publisher/MonitorMessageDispatcher.java
new file mode 100644
index 0000000000..3d16e01af4
--- /dev/null
+++ b/qpid/java/client/example/src/main/java/org/apache/qpid/example/publisher/MonitorMessageDispatcher.java
@@ -0,0 +1,141 @@
+/*
+ * 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.example.publisher;
+
+
+import org.slf4j.LoggerFactory;
+import org.slf4j.Logger;
+
+import javax.jms.DeliveryMode;
+import javax.jms.JMSException;
+
+/**
+ * Class that sends heartbeat messages to allow monitoring of message consumption Sends regular (currently 20 seconds
+ * apart) heartbeat message
+ */
+public class MonitorMessageDispatcher
+{
+
+    private static final Logger _logger = LoggerFactory.getLogger(MonitorMessageDispatcher.class);
+
+    protected static MonitorPublisher _monitorPublisher = null;
+
+    protected static final String DEFAULT_MONITOR_PUB_NAME = "MonitorPublisher";
+
+    /**
+     * Easy entry point for running a message dispatcher for monitoring consumption
+     * Sends 1000 messages with no delay 
+     *
+     * @param args
+     */
+    public static void main(String[] args)
+    {
+        //Switch on logging appropriately for your app
+        try
+        {
+            int i =0;
+            while (i < 1000)
+            {
+                try
+                {
+                    //endlessly publish messages to monitor queue
+                    publish();
+
+                    if (_logger.isDebugEnabled())
+                    {
+                        _logger.debug("Dispatched monitor message");
+                    }
+
+                    //sleep for twenty seconds and then publish again - change if appropriate
+                    //Thread.sleep(1000);
+                    i++   ;
+                }
+                catch (UndeliveredMessageException a)
+                {
+                    //trigger application specific failure handling here
+                    _logger.error("Problem delivering monitor message");
+                    break;
+                }
+            }
+        }
+        catch (Exception e)
+        {
+            _logger.error("Error trying to dispatch AMS monitor message: " + e);
+            System.exit(1);
+        }
+        finally
+        {
+            if (getMonitorPublisher() != null)
+            {
+                getMonitorPublisher().cleanup();
+            }
+        }
+
+        System.exit(1);
+    }
+
+    /**
+     * Publish heartbeat message
+     *
+     * @throws JMSException
+     * @throws UndeliveredMessageException
+     */
+    public static void publish() throws JMSException, UndeliveredMessageException
+    {
+        //Send the message generated from the payload using the _publisher
+//        getMonitorPublisher().sendImmediateMessage
+//          (FileMessageFactory.createSimpleEventMessage(getMonitorPublisher().getSession(),"monitor:" +System.currentTimeMillis()));
+
+        getMonitorPublisher().sendMessage
+                (getMonitorPublisher()._session,
+                 FileMessageFactory.createSimpleEventMessage(getMonitorPublisher().getSession(), "monitor:" + System.currentTimeMillis()),
+                 DeliveryMode.PERSISTENT, false, true);
+
+    }
+
+    /** Cleanup publishers */
+    public static void cleanup()
+    {
+        if (getMonitorPublisher() != null)
+        {
+            getMonitorPublisher().cleanup();
+        }
+
+        if (getMonitorPublisher() != null)
+        {
+            getMonitorPublisher().cleanup();
+        }
+    }
+
+    //Returns a _publisher for the monitor queue
+    private static MonitorPublisher getMonitorPublisher()
+    {
+        if (_monitorPublisher != null)
+        {
+            return _monitorPublisher;
+        }
+
+        //Create a _publisher using failover details and constant for monitor queue
+        _monitorPublisher = new MonitorPublisher();
+
+        _monitorPublisher.setName(MonitorMessageDispatcher.DEFAULT_MONITOR_PUB_NAME);
+        return _monitorPublisher;
+    }
+
+}