[jboss-user] [JBoss jBPM] - How to invoke web-service from Bpel process

Fri Jan 25 03:17:29 EST 2008

Hello, 
I' working with Eclipse europa and the Eclipse BPEL Designer Runtimes 0.2.0. 
The server is jBoss 4.0.5 GA with jbpm-bpel-1.1.GA. 
I'm developing a very simple bpel process with an invocation to a external web service (the ticket service of the atm example). 
I have the following files: 
ticket.wsdl greet.wsdl greetArtifacts.wsdl greet.bpel greet.bpelex WsClient.java

Desc of each file
Ticket.wsdl: interface to ticket web-service
greet.bpel: process file
greet.bpelex: bpel extensions file (automatically generated)
greet.wsdl: interface to bpel process
greetArtifacts.wsdl: automatically generated
WsClient.java: Java client program to invoke the service

Code of each file:

-----------------------------greet.bpel--------------------------------------------
<?xml version="1.0" encoding="UTF-8"?>
<bpws:process exitOnStandardFault="yes" name="greet"
    targetNamespace="http://eclipse.org/bpel/sample"
    xmlns:bpws="http://docs.oasis-open.org/wsbpel/2.0/process/executable"
    xmlns:grt="http://eclipse.org/bpel/sample"
    xmlns:ns="http://eclipse.org/bpel/sampleArtifacts"
    xmlns:tic="http://jbpm.org/examples/ticket" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
    <bpws:import importType="http://schemas.xmlsoap.org/wsdl/"
        location="greet.wsdl" namespace="http://eclipse.org/bpel/sample"/>
    <bpws:import importType="http://schemas.xmlsoap.org/wsdl/"
        location="interface/ticket.wsdl" namespace="http://jbpm.org/examples/ticket"/>
    <bpws:import importType="http://schemas.xmlsoap.org/wsdl/"
        location="greetArtifacts.wsdl" namespace="http://eclipse.org/bpel/sampleArtifacts"/>
    <bpws:import importType="http://schemas.xmlsoap.org/wsdl/"
        location="interface/ticket.wsdl" namespace="http://jbpm.org/examples/ticket"/>
    <bpws:partnerLinks>
        <bpws:partnerLink myRole="greetProvider" name="client" partnerLinkType="grt:greet"/>
        <bpws:partnerLink name="ticket"
            partnerLinkType="ns:Front-Ticket" partnerRole="TicketIssuer"/>
    </bpws:partnerLinks>
    <bpws:variables>
        <bpws:variable messageType="tic:ticketMessage" name="ticketResponse"/>
        <bpws:variable messageType="tic:ticketRequest" name="ticketRequest"/>
    </bpws:variables>
    <bpws:sequence name="main">
        <bpws:receive createInstance="yes" name="receiveInput"
            operation="process" partnerLink="client"
            portType="grt:greet" variable="ticketRequest"/>
        <bpws:invoke inputVariable="ticketRequest" name="CreateTicket"
            operation="createTicket" outputVariable="ticketResponse"
            partnerLink="ticket" portType="tic:TicketIssuer"/>
        <bpws:reply name="replyOutput" operation="process"
            partnerLink="client" portType="grt:greet" variable="ticketResponse"/>
    </bpws:sequence>
</bpws:process>
-------------------------------------------------------------------------------------
----------------------------------greet.bpelex------------------------------------
<?xml version="1.0" encoding="ASCII"?>
<extensionmodel:ExtensionMap xmi:version="2.0" xmlns:xmi="http://www.omg.org/XMI" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:extensionmodel="http:///extensionmodel.ecore" xmlns:org.eclipse.bpel.ui.uiextensionmodel="http:///org/eclipse/bpel/ui/uiextensionmodel.ecore" namespace="http://org.eclipse.bpel.ui/">

    <extensionObject xsi:type="org.eclipse.bpel.ui.uiextensionmodel:VariableExtension"/>

    <extensionObject xsi:type="org.eclipse.bpel.ui.uiextensionmodel:VariableExtension"/>

    <extensionObject xsi:type="org.eclipse.bpel.ui.uiextensionmodel:ActivityExtension"/>

    <extensionObject xsi:type="org.eclipse.bpel.ui.uiextensionmodel:ActivityExtension"/>

    <extensionObject xsi:type="org.eclipse.bpel.ui.uiextensionmodel:ActivityExtension"/>

    <extensionObject xsi:type="org.eclipse.bpel.ui.uiextensionmodel:ProcessExtension" modificationStamp="1201170068297"/>

    <extensionObject xsi:type="org.eclipse.bpel.ui.uiextensionmodel:ActivityExtension"/>

    <extensionObject xsi:type="org.eclipse.bpel.ui.uiextensionmodel:CopyExtension"/>

</extensionmodel:ExtensionMap>
--------------------------------------------------------------------------------------
-----------------------------------greet.wsdl---------------------------------------
<?xml version="1.0"?>
<definitions name="greet"
        targetNamespace="http://eclipse.org/bpel/sample"
        xmlns:grt="http://eclipse.org/bpel/sample" xmlns:tic="http://jbpm.org/examples/ticket"
        xmlns:plnk="http://docs.oasis-open.org/wsbpel/2.0/plnktype"
        xmlns="http://schemas.xmlsoap.org/wsdl/" xmlns:xsd="http://www.w3.org/2001/XMLSchema"
        >

<!-- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     TYPE DEFINITION - List of types participating in this BPEL process 
     The BPEL Designer will generate default request and response types
     but you can define or import any XML Schema type and use them as part 
     of the message types.
     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -->    
    <!--  

    -->

<!-- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     MESSAGE TYPE DEFINITION - Definition of the message types used as 
     part of the port type defintions
     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -->    
    <!--

    -->
    <!-- 

    -->

<!-- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     PORT TYPE DEFINITION - A port type groups a set of operations into
     a logical service unit.
     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -->    

    <!-- portType implemented by the greet BPEL process -->

<!-- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     PARTNER LINK TYPE DEFINITION
     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -->    
    <plnk:partnerLinkType name="greet">
        <plnk:role name="greetProvider" portType="grt:greet"/>
    </plnk:partnerLinkType>

--------------------------------------------------------------------------------------
------------------------------------greetArtifacts.wsdl----------------------------
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<definitions xmlns:plnk="http://docs.oasis-open.org/wsbpel/2.0/plnktype" xmlns:tns="http://eclipse.org/bpel/sampleArtifacts" xmlns:vprop="http://docs.oasis-open.org/wsbpel/2.0/varprop" xmlns:wsdl="http://jbpm.org/examples/ticket" name="greetArtifacts" targetNamespace="http://eclipse.org/bpel/sampleArtifacts" xmlns="http://schemas.xmlsoap.org/wsdl/">

  <plnk:partnerLinkType name="Front-Ticket">
    <plnk:role name="TicketIssuer" portType="wsdl:TicketIssuer"/>
  </plnk:partnerLinkType>

--------------------------------------------------------------------------------------
---------------------------------ticket.wsdl-----------------------------------------
<?xml version="1.0" encoding="UTF-8"?>
<definitions targetNamespace="http://jbpm.org/examples/ticket"
  xmlns:tns="http://jbpm.org/examples/ticket" xmlns:xsd="http://www.w3.org/2001/XMLSchema"
  xmlns="http://schemas.xmlsoap.org/wsdl/">

    ticket creation request

    ticket number wrapper

    interface to ticket issuer service

      generate a ticket number, distinct from previous calls

--------------------------------------------------------------------------------------
----------------------------------WsClient.java------------------------------------
package com.test;

import java.net.URL;

import javax.xml.namespace.QName;
import javax.xml.rpc.Call;
import javax.xml.rpc.Service;
import javax.xml.rpc.ServiceFactory;

public class WsClient 
{
	 private static String invokeWS() throws Exception
	  {
	    Service service;
	    String namespace = "http://eclipse.org/bpel/sample";
	    //In out case: "http://net.luminis.bpel"

	    URL url = new URL("http://ddc1a-01-378:8080/greet/greetProvider?wsdl");
	    //Our location: "http://localhost:8080/active-bpel/services/ProofOfConcept?wsdl"

	    QName qname = new QName(namespace, "greetService");

	    ServiceFactory factory = ServiceFactory.newInstance();
	    service = factory.createService(url, qname);

	    QName operation = new QName(namespace, "process");
	    QName port = new QName(namespace, "greetProviderPort");

	    Call call = service.createCall(port, operation);

	    return (String) call.invoke(null);
	  }

	public static void main(String[] args) 
	{
		try {
		      System.out.println("Invoke: " + invokeWS() );
		      System.out.println("XercesImpl version being used: " + org.apache.xerces.impl.Version.getVersion());

		    } catch (Exception e) {
		     // System.out.println("An error has occured!");
		      //System.out.println(e);
		      e.printStackTrace();
		    }
	}
}
--------------------------------------------------------------------------------------

The BPEL process is getting deployed but when I try to invoke the process through client program, following exceptions occur in java console:

java.rmi.ServerException: The service is not in an appropiate state for the requested operation
	at com.sun.xml.rpc.client.StreamingSender._raiseFault(StreamingSender.java:510)
	at com.sun.xml.rpc.client.StreamingSender._send(StreamingSender.java:307)
	at com.sun.xml.rpc.client.dii.CallInvokerImpl.doInvoke(CallInvokerImpl.java:103)
	at com.sun.xml.rpc.client.dii.BasicCall.invoke(BasicCall.java:486)
	at com.test.WsClient.invokeWS(WsClient.java:32)
	at com.test.WsClient.main(WsClient.java:38)

and following exceptions in jboss console:

2008-01-25 13:18:41,622 ERROR [org.jbpm.bpel.integration.jms.StartListener] request delivery failed due to non-recoverable exception, giving up
org.jbpm.bpel.BpelException: no port implements the required port type: portType={http://jbpm.org/examples/ticket}TicketIssuer
	at org.jbpm.bpel.endpointref.SoapEndpointReference.selectPort(SoapEndpointReference.java:97)
	at org.jbpm.bpel.endpointref.SoapEndpointReference.selectPort(SoapEndpointReference.java:52)
	at org.jbpm.bpel.integration.jms.IntegrationControl.createPartnerClient(IntegrationControl.java:258)
	at org.jbpm.bpel.integration.jms.IntegrationControl.getPartnerClient(IntegrationControl.java:239)
	at org.jbpm.bpel.integration.jms.JmsIntegrationService.invoke(JmsIntegrationService.java:172)
	at org.jbpm.bpel.integration.def.InvokeAction.execute(InvokeAction.java:76)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:585)
	at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.invoke(CGLIBLazyInitializer.java:185)
	at org.jbpm.graph.def.Action$$EnhancerByCGLIB$$d59d8d76.execute()
	at org.jbpm.graph.def.GraphElement.executeAction(GraphElement.java:264)
	at org.jbpm.graph.def.Node.execute(Node.java:339)
	at org.jbpm.bpel.graph.def.Activity.enter(Activity.java:110)
	at org.jbpm.graph.def.Transition.take(Transition.java:151)
	at org.jbpm.graph.def.Node.leave(Node.java:394)
	at org.jbpm.bpel.graph.def.Activity.leave(Activity.java:200)
	at org.jbpm.bpel.graph.basic.Receive.messageReceived(Receive.java:53)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:585)
	at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.invoke(CGLIBLazyInitializer.java:185)
	at org.jbpm.bpel.graph.basic.Receive$$EnhancerByCGLIB$$952e287.messageReceived()
	at org.jbpm.bpel.integration.def.ReceiveAction.deliverMessage(ReceiveAction.java:99)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:585)
	at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.invoke(CGLIBLazyInitializer.java:185)
	at org.jbpm.bpel.integration.def.ReceiveAction$$EnhancerByCGLIB$$88609d70.deliverMessage()
	at org.jbpm.bpel.integration.jms.StartListener.deliverRequest(StartListener.java:222)
	at org.jbpm.bpel.integration.jms.StartListener.onMessage(StartListener.java:168)
	at org.jboss.mq.SpyMessageConsumer.run(SpyMessageConsumer.java:696)
	at java.lang.Thread.run(Thread.java:595)

Please, can someone help me? 
Sorry for the long post and thanks in advance 

Shefali

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