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1   /*
2    * $Id: EventGeneratorJob.java 19191 2010-08-25 21:05:23Z tcarlson $
3    * --------------------------------------------------------------------------------------
4    * Copyright (c) MuleSoft, Inc.  All rights reserved.  http://www.mulesoft.com
5    *
6    * The software in this package is published under the terms of the CPAL v1.0
7    * license, a copy of which has been included with this distribution in the
8    * LICENSE.txt file.
9    */
10  
11  package org.mule.transport.quartz.jobs;
12  
13  import org.mule.api.MuleContext;
14  import org.mule.api.MuleMessage;
15  import org.mule.api.config.MuleProperties;
16  import org.mule.transport.AbstractConnector;
17  import org.mule.transport.AbstractMessageReceiver;
18  import org.mule.transport.NullPayload;
19  import org.mule.transport.quartz.QuartzConnector;
20  import org.mule.transport.quartz.QuartzMessageReceiver;
21  import org.mule.transport.quartz.i18n.QuartzMessages;
22  
23  import org.apache.commons.logging.Log;
24  import org.apache.commons.logging.LogFactory;
25  import org.quartz.Job;
26  import org.quartz.JobDataMap;
27  import org.quartz.JobExecutionContext;
28  import org.quartz.JobExecutionException;
29  import org.quartz.SchedulerException;
30  
31  /**
32   * Will generate a new event based o the scheduled time. The payload of the event is
33   * currently a static object or instance of {@link org.mule.transport.NullPayload} if no payload
34   * has been set.
35   *
36   * We may want to extend this but allowing the payload to be generated using a factory.
37   */
38  public class EventGeneratorJob implements Job
39  {
40  
41      /**
42       * The logger used for this class
43       */
44      protected transient Log logger = LogFactory.getLog(getClass());
45  
46      public void execute(JobExecutionContext jobExecutionContext) throws JobExecutionException
47      {
48          MuleContext muleContext;
49          try
50          {
51              muleContext = (MuleContext)jobExecutionContext.getScheduler().getContext().get(MuleProperties.MULE_CONTEXT_PROPERTY);
52          }
53          catch (SchedulerException e)
54          {
55              throw new JobExecutionException("Failed to retrieve Mulecontext from the Scheduler Context: " + e.getMessage(), e);
56          }
57  
58          JobDataMap map = jobExecutionContext.getJobDetail().getJobDataMap();
59  
60          String receiverKey = (String)map.get(QuartzMessageReceiver.QUARTZ_RECEIVER_PROPERTY);
61          if (receiverKey == null)
62          {
63              throw new JobExecutionException(QuartzMessages.receiverNotInJobDataMap().getMessage());
64          }
65  
66          String connectorName = (String)map.get(QuartzMessageReceiver.QUARTZ_CONNECTOR_PROPERTY);
67          if (connectorName == null)
68          {
69              throw new JobExecutionException(QuartzMessages.connectorNotInJobDataMap().getMessage());
70          }
71  
72          AbstractConnector connector = (AbstractConnector) muleContext.getRegistry().lookupConnector(connectorName);
73          if (connector == null)
74          {
75              throw new JobExecutionException(QuartzMessages.noConnectorFound(connectorName).getMessage());
76          }
77  
78          AbstractMessageReceiver receiver = (AbstractMessageReceiver)connector.lookupReceiver(receiverKey);
79          if (receiver == null)
80          {
81              throw new JobExecutionException(
82                  QuartzMessages.noReceiverInConnector(receiverKey, connectorName).getMessage());
83          }
84  
85          Object payload = jobExecutionContext.getJobDetail().getJobDataMap().get(
86              QuartzConnector.PROPERTY_PAYLOAD);
87  
88          try
89          {
90              if (payload == null)
91              {
92                  String ref = jobExecutionContext.getJobDetail().getJobDataMap().getString(
93                      QuartzConnector.PROPERTY_PAYLOAD);
94  
95                  if (ref == null)
96                  {
97                      payload = NullPayload.getInstance();
98                  }
99                  else
100                 {
101                     payload = muleContext.getRegistry().lookupObject(ref);
102                 }
103 
104                 if (payload==null)
105                 {
106                     logger.warn("There is no payload attached to this quartz job. Sending Null payload");
107                     payload = NullPayload.getInstance();
108                 }
109             }
110             
111             MuleMessage msg = receiver.createMuleMessage(payload, receiver.getEndpoint().getEncoding());
112             // If the job is stateful users can store state in this map and have it available for the next job trigger
113             msg.setInvocationProperty(
114                     QuartzConnector.PROPERTY_JOB_DATA, jobExecutionContext.getJobDetail().getJobDataMap());
115             receiver.routeMessage(msg);
116         }
117         catch (Exception e)
118         {
119             muleContext.getExceptionListener().handleException(e);
120         }
121     }
122 }