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package org.mule.module.jbpm; |
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import org.mule.MessageExchangePattern; |
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import org.mule.api.MuleMessage; |
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import org.mule.api.config.MuleProperties; |
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import org.mule.module.bpm.MessageService; |
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import org.mule.module.bpm.Process; |
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import org.mule.util.ClassUtils; |
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import java.util.HashMap; |
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import java.util.Map; |
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import java.util.Map.Entry; |
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import org.jbpm.api.JbpmException; |
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import org.jbpm.api.activity.ActivityExecution; |
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import org.jbpm.api.listener.EventListener; |
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import org.jbpm.api.listener.EventListenerExecution; |
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import org.jbpm.api.model.OpenExecution; |
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import org.jbpm.internal.log.Log; |
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import org.jbpm.jpdl.internal.activity.JpdlActivity; |
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import org.jbpm.pvm.internal.env.EnvironmentImpl; |
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import org.jbpm.pvm.internal.model.ExecutionImpl; |
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import org.jbpm.pvm.internal.script.ScriptManager; |
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35 | 0 | public class MuleSendActivity extends JpdlActivity implements EventListener |
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{ |
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private String endpoint; |
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45 | 0 | private MessageExchangePattern mep = MessageExchangePattern.REQUEST_RESPONSE; |
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private Class responsePayloadClass; |
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private String responseVariableName; |
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private String payloadExpression; |
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private Object payloadObject; |
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67 | 0 | private static final Log log = Log.getLog(MuleSendActivity.class.getName()); |
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public void execute(ActivityExecution execution) throws Exception |
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{ |
71 | 0 | perform(execution); |
72 | 0 | ((ExecutionImpl) execution).historyAutomatic(); |
73 | 0 | } |
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public void notify(EventListenerExecution execution) throws Exception |
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{ |
77 | 0 | perform(execution); |
78 | 0 | } |
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public void perform(OpenExecution execution) throws Exception |
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{ |
82 | 0 | MessageService mule = EnvironmentImpl.getCurrent().get(MuleMessageService.class); |
83 | 0 | if (mule == null) |
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{ |
85 | 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"); |
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} |
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88 | 0 | if (payloadExpression == null) |
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{ |
90 | 0 | payloadObject = execution.getVariable(Process.PROCESS_VARIABLE_DATA); |
91 | 0 | if (payloadObject == null) |
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{ |
93 | 0 | payloadObject = execution.getVariable(Process.PROCESS_VARIABLE_INCOMING); |
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} |
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} |
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else |
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{ |
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101 | 0 | payloadObject = ScriptManager.getScriptManager().evaluateExpression(payloadExpression, null); |
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} |
103 | 0 | if (payloadObject == null) |
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{ |
105 | 0 | throw new IllegalArgumentException("Payload for message is null. Payload source is \"" |
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+ payloadExpression + "\""); |
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} |
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109 | 0 | Map props = new HashMap(); |
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111 | 0 | props.put(Process.PROPERTY_PROCESS_TYPE, ((ExecutionImpl) execution).getProcessDefinition().getName()); |
112 | 0 | props.put(Process.PROPERTY_PROCESS_ID, execution.getId()); |
113 | 0 | String state = Jbpm.getState(execution.getProcessInstance()); |
114 | 0 | props.put("MULE_BPM_PROCESS_STATE", state); |
115 | 0 | log.debug("process state: " + state); |
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118 | 0 | for (Entry<String, ?> var : execution.getVariables().entrySet()) |
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{ |
120 | 0 | if (!var.getKey().startsWith(MuleProperties.PROPERTY_PREFIX)) |
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{ |
122 | 0 | log.debug("process var: " + var.getKey() + " = " + var.getValue()); |
123 | 0 | props.put(var.getKey(), var.getValue()); |
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} |
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} |
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128 | 0 | endpoint = (String) ScriptManager.getScriptManager().evaluateExpression(endpoint, null); |
129 | 0 | MuleMessage response = mule.generateMessage(endpoint, payloadObject, props, mep); |
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131 | 0 | if (mep.hasResponse() && response != null) |
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{ |
133 | 0 | Object responsePayload = response.getPayload(); |
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136 | 0 | if (responsePayloadClass != null) |
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{ |
138 | 0 | log.debug("Validating response type = " + responsePayload.getClass() + ", expected = " + responsePayloadClass); |
139 | 0 | if (!responsePayloadClass.isAssignableFrom(responsePayload.getClass())) |
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{ |
141 | 0 | throw new JbpmException("Response message is of type " + responsePayload.getClass() + " but expected type is " + responsePayloadClass); |
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} |
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} |
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145 | 0 | if (responseVariableName != null) |
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{ |
147 | 0 | if (responsePayload != null) |
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{ |
149 | 0 | execution.setVariable(responseVariableName, responsePayload); |
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} |
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else |
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{ |
153 | 0 | log.info("Synchronous message was sent to endpoint " + endpoint + ", but no response was returned."); |
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} |
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} |
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} |
157 | 0 | } |
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public void setEndpoint(String endpoint) |
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{ |
161 | 0 | this.endpoint = endpoint; |
162 | 0 | } |
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public void setMessageExchangePattern(String mepString) |
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{ |
166 | 0 | if (mepString != null) |
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{ |
168 | 0 | this.mep = MessageExchangePattern.fromString(mepString); |
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} |
170 | 0 | } |
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public String getPayloadExpression() |
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{ |
174 | 0 | return payloadExpression; |
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} |
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public void setPayloadExpression(String payloadExpression) |
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{ |
179 | 0 | this.payloadExpression = payloadExpression; |
180 | 0 | } |
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public String getResponseVariableName() |
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{ |
184 | 0 | return responseVariableName; |
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} |
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public void setResponseVariableName(String responseVariableName) |
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{ |
189 | 0 | this.responseVariableName = responseVariableName; |
190 | 0 | } |
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public void setResponsePayloadClass(String className) |
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{ |
194 | 0 | if (className != null) |
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{ |
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try |
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{ |
198 | 0 | responsePayloadClass = ClassUtils.loadClass(className, this.getClass()); |
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} |
200 | 0 | catch (ClassNotFoundException e) |
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{ |
202 | 0 | log.error("Expected message type not valid: " + e.getMessage()); |
203 | 0 | } |
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} |
205 | 0 | } |
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public Class getResponsePayloadClass() |
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{ |
209 | 0 | return responsePayloadClass; |
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} |
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} |