问题:

I created a Mule3 Simple Front-end Web Service which is supposed to pass the XML message to a sub-flow and returns success to its caller.

mule-config.xml

<flow name="webserviceTestFlow">    <http:inbound-endpoint address="${webservicetest.env.endpoint}" exchange-pattern="request-response" doc:name="HTTP"/>   <cxf:simple-service serviceClass="com.test.WebserviceTest" doc:name="SOAP"/>   <component class="com.test.WebserviceTestImpl" /> </flow>

sample webservice method

public class WebserviceTestImpl implements WebserviceTest,Serializable {         @Override     public String test(String requestMessage) throws Exception{                // sends XML message to a sub-flow                return "success";         }

The issue is I do not find an mule api to call a sub-flow with in webservice method.

回答1:

Invoking a sub-flow from code is no small feat but possible.

Here is a test component that does invoke a sub-flow injected in it:

public class TestComponent implements MuleContextAware, FlowConstructAware {     private MuleContext muleContext;     private FlowConstruct flowConstruct;     private MessageProcessor subFlow;      public void initialize() throws MuleException     {         muleContext.getRegistry().applyProcessorsAndLifecycle(subFlow);     }      public String test(final String requestMessage) throws Exception     {          final MuleEvent muleEvent = new DefaultMuleEvent(new DefaultMuleMessage(requestMessage, muleContext),             MessageExchangePattern.REQUEST_RESPONSE, flowConstruct);         final MuleEvent resultEvent = subFlow.process(muleEvent);          return resultEvent.getMessageAsString();     }      public void setMuleContext(final MuleContext muleContext)     {         this.muleContext = muleContext;     }      public void setFlowConstruct(final FlowConstruct flowConstruct)     {         this.flowConstruct = flowConstruct;     }      public void setSubFlow(final MessageProcessor subFlow)     {         this.subFlow = subFlow;     } }

The component is configured this way:

<spring:beans>     <spring:bean name="testComponent" class="com.example.TestComponent"         p:subFlow-ref="testSubFlow" init-method="initialize" /> </spring:beans>  ...      <component>         <spring-object bean="testComponent" />     </component>

回答2:

I solved this problem by using singleton instance to store requestMessage with in test() method of WebserviceTestImpl class and retrieve it in TestSubflow component. I am not sure if it is perfect. but it works:)

Here is how I did it..

mule-config:

<flow name="webserviceTestFlow">   <http:inbound-endpoint address="${webservicetest.env.endpoint}" exchange-pattern="request-response" doc:name="HTTP"/>   <cxf:simple-service serviceClass="com.test.WebserviceTest" doc:name="SOAP"/>   <component class="com.test.WebserviceTestImpl" />   <flow-ref name="testSubflow"/> </flow>  <sub-flow name="testSubflow">     <pooled-component class="com.test.TestSubflow">         <pooling-profile exhaustedAction="WHEN_EXHAUSTED_FAIL" initialisationPolicy="INITIALISE_ALL" maxActive="1" maxIdle="2" maxWait="3" />     </pooled-component> </sub-flow>

WebserviceTestImpl and TestSubflow code snippet

public class WebserviceTestImpl implements WebserviceTest,Serializable {     private static final long serialVersionUID = 1L;     private TestMessageProxy testMessageProxy;      public TriggerTestImpl() {         this.testMessageProxy = TestMessageProxy.getInstance();     }     @Override     public String test(String requestMessage) throws Exception{         this.testMessageProxy.setTestMessage(requestMessage);         return "success";     } }  public class TestSubflow  implements Callable{     private TestMessageProxy testMessageProxy;     public TestSubflow() {         this.testMessageProxy = TestMessageProxy.getInstance();     }      @Override     public Object onCall(MuleEventContext context) throws Exception {         String  testMessage = this.testMessageProxy.getTestMessage();     } }

转载请标明出处:call subflow with in mule3 webservice

文章来源: call subflow with in mule3 webservice

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