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1   /*
2    * Copyright (c) MuleSoft, Inc.  All rights reserved.  http://www.mulesoft.com
3    * The software in this package is published under the terms of the CPAL v1.0
4    * license, a copy of which has been included with this distribution in the
5    * LICENSE.txt file.
6    */
7   package org.mule.example.notifications;
8   
9   import org.mule.api.MuleContext;
10  import org.mule.api.context.notification.BlockingServerEvent;
11  import org.mule.context.notification.CustomNotification;
12  
13  import java.net.InetAddress;
14  import java.net.UnknownHostException;
15  
16  /**
17   * A simple notification that fires repeatedly to notify tha the Mule server is alive
18   * and well.
19   */
20  public class HeartbeatNotification extends CustomNotification implements BlockingServerEvent
21  {
22      private static final long serialVersionUID = -3246036188011581121L;
23  
24      public static final int HEARTBEAT = CUSTOM_EVENT_ACTION_START_RANGE + 1300;
25  
26      static
27      {
28          registerAction("mule heartbeat", HEARTBEAT);
29      }
30  
31      public HeartbeatNotification(MuleContext context)
32      {
33          super(getHostInfo(), HEARTBEAT, context.getConfiguration().getId());
34      }
35  
36      protected static String getHostInfo()
37      {
38          try
39          {
40              InetAddress host = InetAddress.getLocalHost();
41              return host.getHostName() + " (" + host.getHostAddress() + ")";
42          }
43          catch (UnknownHostException e)
44          {
45              return "unknown";
46          }
47      }
48  
49      @Override
50      public String toString()
51      {
52          return EVENT_NAME + "{" + "action=" + getActionName(action) + ", resourceId=" + resourceIdentifier
53                 + ", timestamp=" + timestamp + "}";
54      }
55  }