Coverage Report - org.mule.module.jbpm.MuleSendActivity
 
Classes in this File Line Coverage Branch Coverage Complexity
MuleSendActivity
0%
0/60
0%
0/28
0
 
 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.module.jbpm;
 8  
 
 9  
 import org.mule.MessageExchangePattern;
 10  
 import org.mule.api.MuleMessage;
 11  
 import org.mule.api.config.MuleProperties;
 12  
 import org.mule.module.bpm.MessageService;
 13  
 import org.mule.module.bpm.Process;
 14  
 import org.mule.util.ClassUtils;
 15  
 
 16  
 import java.util.HashMap;
 17  
 import java.util.Map;
 18  
 import java.util.Map.Entry;
 19  
 
 20  
 import org.jbpm.api.JbpmException;
 21  
 import org.jbpm.api.activity.ActivityExecution;
 22  
 import org.jbpm.api.listener.EventListener;
 23  
 import org.jbpm.api.listener.EventListenerExecution;
 24  
 import org.jbpm.api.model.OpenExecution;
 25  
 import org.jbpm.internal.log.Log;
 26  
 import org.jbpm.jpdl.internal.activity.JpdlActivity;
 27  
 import org.jbpm.pvm.internal.env.EnvironmentImpl;
 28  
 import org.jbpm.pvm.internal.model.ExecutionImpl;
 29  
 import org.jbpm.pvm.internal.script.ScriptManager;
 30  
 
 31  0
 public class MuleSendActivity extends JpdlActivity implements EventListener
 32  
 {
 33  
     /**
 34  
      * Mule endpoint to send a message to.  This may be a URI or logical name (for a global endpoint).
 35  
      */
 36  
     private String endpoint;
 37  
 
 38  
     /**
 39  
      * Exchange pattern (REQUEST-RESPONSE, ONE-WAY, etc.).  Default is REQUEST-RESPONSE.
 40  
      */
 41  0
     private MessageExchangePattern mep = MessageExchangePattern.REQUEST_RESPONSE;
 42  
     
 43  
     /** 
 44  
      * Expected response type in the case of a synchronous call; if the response payload is not assignable to this class, an exception will be thrown.
 45  
      */
 46  
     private Class responsePayloadClass;
 47  
 
 48  
     /**
 49  
      * Variable into which the synchronous response will be stored.  If null, the response will not be stored at all.
 50  
      */
 51  
     private String responseVariableName;
 52  
     
 53  
     /**
 54  
      * payloadSource may be a literal value or it may be an expression which references process variables.
 55  
      */
 56  
     private String payloadExpression;
 57  
 
 58  0
     private static final Log log = Log.getLog(MuleSendActivity.class.getName());
 59  
 
 60  
     public void execute(ActivityExecution execution) throws Exception
 61  
     {
 62  0
         perform(execution);
 63  0
         ((ExecutionImpl) execution).historyAutomatic();
 64  0
     }
 65  
 
 66  
     public void notify(EventListenerExecution execution) throws Exception
 67  
     {
 68  0
         perform(execution);
 69  0
     }
 70  
 
 71  
     public void perform(OpenExecution execution) throws Exception
 72  
     {
 73  0
         MessageService mule = EnvironmentImpl.getCurrent().get(MuleMessageService.class);
 74  0
         if (mule == null)
 75  
         {
 76  0
             throw new JbpmException("The Mule MessageService is not available from the ProcessEngine, you may need to add it to your jbpm.cfg.xml file");
 77  
         }
 78  
 
 79  0
         Object payloadObject = null;
 80  0
         if (payloadExpression == null)
 81  
         {
 82  0
             payloadObject = execution.getVariable(Process.PROCESS_VARIABLE_DATA);
 83  0
             if (payloadObject == null)
 84  
             {
 85  0
                 payloadObject = execution.getVariable(Process.PROCESS_VARIABLE_INCOMING);
 86  
             }
 87  
         }
 88  
         else
 89  
         {
 90  
             // The payloadSource may be specified using an expression (e.g.,
 91  
             // #{myObject.myStuff.myField} would first retrieve the process
 92  
             // variable "myObject" and then call .getMyStuff().getMyField()
 93  0
             payloadObject = ScriptManager.getScriptManager().evaluateExpression(payloadExpression, null);
 94  
         }
 95  0
         if (payloadObject == null)
 96  
         {
 97  0
             throw new IllegalArgumentException("Payload for message is null.  Payload source is \""
 98  
                                                + payloadExpression + "\"");
 99  
         }
 100  
 
 101  0
         Map props = new HashMap();
 102  
 
 103  0
         props.put(Process.PROPERTY_PROCESS_TYPE, ((ExecutionImpl) execution).getProcessDefinition().getName());
 104  0
         props.put(Process.PROPERTY_PROCESS_ID, execution.getId());
 105  0
         String state = Jbpm.getState(execution.getProcessInstance());
 106  0
         props.put("MULE_BPM_PROCESS_STATE", state);
 107  0
         log.debug("process state: " + state);        
 108  
 
 109  
         // Set process vars as properties on outgoing Mule messages.
 110  0
         for (Entry<String, ?> var : execution.getVariables().entrySet())
 111  
         {
 112  0
             if (!var.getKey().startsWith(MuleProperties.PROPERTY_PREFIX))
 113  
             {
 114  0
                 log.debug("process var: " + var.getKey() + " = " + var.getValue());
 115  0
                 props.put(var.getKey(), var.getValue());
 116  
             }
 117  
         }
 118  
 
 119  
         // Just in case the endpoint itself is an expression
 120  0
         endpoint = (String) ScriptManager.getScriptManager().evaluateExpression(endpoint, null);
 121  0
         MuleMessage response = mule.generateMessage(endpoint, payloadObject, props, mep);
 122  
 
 123  0
         if (mep.hasResponse() && response != null)
 124  
         {
 125  0
             Object responsePayload = response.getPayload();
 126  
     
 127  
             // Validate expected response type
 128  0
             if (responsePayloadClass != null)
 129  
             {
 130  0
                 log.debug("Validating response type = " + responsePayload.getClass() + ", expected = " + responsePayloadClass);
 131  0
                 if (!responsePayloadClass.isAssignableFrom(responsePayload.getClass()))
 132  
                 {
 133  0
                     throw new JbpmException("Response message is of type " + responsePayload.getClass() + " but expected type is " + responsePayloadClass);
 134  
                 }
 135  
             }
 136  
             
 137  0
             if (responseVariableName != null)
 138  
             {
 139  0
                 if (responsePayload != null)
 140  
                 {
 141  0
                     execution.setVariable(responseVariableName, responsePayload);
 142  
                 }
 143  
                 else
 144  
                 {
 145  0
                     log.info("Synchronous message was sent to endpoint " + endpoint + ", but no response was returned.");
 146  
                 }
 147  
             }
 148  
         }
 149  0
     }
 150  
     
 151  
     public void setEndpoint(String endpoint)
 152  
     {
 153  0
         this.endpoint = endpoint;
 154  0
     }
 155  
 
 156  
     public void setMessageExchangePattern(String mepString)
 157  
     {
 158  0
         if (mepString != null)
 159  
         {
 160  0
             this.mep = MessageExchangePattern.fromString(mepString);
 161  
         }
 162  0
     }
 163  
 
 164  
     public String getPayloadExpression()
 165  
     {
 166  0
         return payloadExpression;
 167  
     }
 168  
 
 169  
     public void setPayloadExpression(String payloadExpression)
 170  
     {
 171  0
         this.payloadExpression = payloadExpression;
 172  0
     }
 173  
 
 174  
     public String getResponseVariableName()
 175  
     {
 176  0
         return responseVariableName;
 177  
     }
 178  
 
 179  
     public void setResponseVariableName(String responseVariableName)
 180  
     {
 181  0
         this.responseVariableName = responseVariableName;
 182  0
     }
 183  
 
 184  
     public void setResponsePayloadClass(String className)
 185  
     {
 186  0
         if (className != null)
 187  
         {
 188  
             try
 189  
             {
 190  0
                 responsePayloadClass = ClassUtils.loadClass(className, this.getClass());
 191  
             }
 192  0
             catch (ClassNotFoundException e)
 193  
             {
 194  0
                 log.error("Expected message type not valid: " + e.getMessage());
 195  0
             }
 196  
         }
 197  0
     }
 198  
 
 199  
     public Class getResponsePayloadClass()
 200  
     {
 201  0
         return responsePayloadClass;
 202  
     }
 203  
 }