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1   /*
2    * $Id: EventGeneratorJob.java 22396 2011-07-12 21:26:04Z mike.schilling $
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 extends AbstractJob
39  {
40  
41      /**
42       * The logger used for this class
43       */
44      protected transient Log logger = LogFactory.getLog(getClass());
45  
46      protected void doExecute(JobExecutionContext jobExecutionContext) throws JobExecutionException
47      {
48          JobDataMap map = jobExecutionContext.getJobDetail().getJobDataMap();
49  
50          String receiverKey = (String)map.get(QuartzMessageReceiver.QUARTZ_RECEIVER_PROPERTY);
51          if (receiverKey == null)
52          {
53              throw new JobExecutionException(QuartzMessages.receiverNotInJobDataMap().getMessage());
54          }
55  
56          String connectorName = (String)map.get(QuartzMessageReceiver.QUARTZ_CONNECTOR_PROPERTY);
57          if (connectorName == null)
58          {
59              throw new JobExecutionException(QuartzMessages.connectorNotInJobDataMap().getMessage());
60          }
61  
62          AbstractConnector connector = (AbstractConnector) muleContext.getRegistry().lookupConnector(connectorName);
63          if (connector == null)
64          {
65              throw new JobExecutionException(QuartzMessages.noConnectorFound(connectorName).getMessage());
66          }
67  
68          AbstractMessageReceiver receiver = (AbstractMessageReceiver)connector.lookupReceiver(receiverKey);
69          if (receiver == null)
70          {
71              throw new JobExecutionException(
72                  QuartzMessages.noReceiverInConnector(receiverKey, connectorName).getMessage());
73          }
74  
75          Object payload = jobExecutionContext.getJobDetail().getJobDataMap().get(
76              QuartzConnector.PROPERTY_PAYLOAD);
77  
78          try
79          {
80              if (payload == null)
81              {
82                  String ref = jobExecutionContext.getJobDetail().getJobDataMap().getString(
83                      QuartzConnector.PROPERTY_PAYLOAD);
84  
85                  if (ref == null)
86                  {
87                      payload = NullPayload.getInstance();
88                  }
89                  else
90                  {
91                      payload = muleContext.getRegistry().lookupObject(ref);
92                  }
93  
94                  if (payload==null)
95                  {
96                      logger.warn("There is no payload attached to this quartz job. Sending Null payload");
97                      payload = NullPayload.getInstance();
98                  }
99              }
100             
101             MuleMessage msg = receiver.createMuleMessage(payload, receiver.getEndpoint().getEncoding());
102             // If the job is stateful users can store state in this map and have it available for the next job trigger
103             msg.setInvocationProperty(
104                     QuartzConnector.PROPERTY_JOB_DATA, jobExecutionContext.getJobDetail().getJobDataMap());
105             receiver.routeMessage(msg);
106         }
107         catch (Exception e)
108         {
109             muleContext.getExceptionListener().handleException(e);
110         }
111     }
112 }