diff options
Diffstat (limited to 'java/sca/modules/implementation-bpel-runtime/src/main/java/org/apache/tuscany/sca/implementation/bpel/ode/provider/BPELInvoker.java')
| -rw-r--r-- | java/sca/modules/implementation-bpel-runtime/src/main/java/org/apache/tuscany/sca/implementation/bpel/ode/provider/BPELInvoker.java | 286 |
1 files changed, 0 insertions, 286 deletions
diff --git a/java/sca/modules/implementation-bpel-runtime/src/main/java/org/apache/tuscany/sca/implementation/bpel/ode/provider/BPELInvoker.java b/java/sca/modules/implementation-bpel-runtime/src/main/java/org/apache/tuscany/sca/implementation/bpel/ode/provider/BPELInvoker.java deleted file mode 100644 index dfe11600f0..0000000000 --- a/java/sca/modules/implementation-bpel-runtime/src/main/java/org/apache/tuscany/sca/implementation/bpel/ode/provider/BPELInvoker.java +++ /dev/null @@ -1,286 +0,0 @@ -/* - * Licensed to the Apache Software Foundation (ASF) under one - * or more contributor license agreements. See the NOTICE file - * distributed with this work for additional information - * regarding copyright ownership. The ASF licenses this file - * to you under the Apache License, Version 2.0 (the - * "License"); you may not use this file except in compliance - * with the License. You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, - * software distributed under the License is distributed on an - * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY - * KIND, either express or implied. See the License for the - * specific language governing permissions and limitations - * under the License. - */ - -package org.apache.tuscany.sca.implementation.bpel.ode.provider; - -import java.lang.reflect.InvocationTargetException; -import java.util.concurrent.Future; -import java.util.concurrent.TimeUnit; - -import javax.transaction.SystemException; -import javax.transaction.TransactionManager; -import javax.wsdl.Part; -import javax.xml.namespace.QName; - -import org.apache.commons.logging.Log; -import org.apache.commons.logging.LogFactory; -import org.apache.ode.bpel.iapi.MyRoleMessageExchange; -import org.apache.ode.bpel.iapi.MessageExchange.Status; -import org.apache.ode.utils.DOMUtils; -import org.apache.ode.utils.GUID; -import org.apache.tuscany.sca.assembly.Base; -import org.apache.tuscany.sca.assembly.EndpointReference; -import org.apache.tuscany.sca.implementation.bpel.ode.EmbeddedODEServer; -import org.apache.tuscany.sca.interfacedef.Interface; -import org.apache.tuscany.sca.interfacedef.Operation; -import org.apache.tuscany.sca.interfacedef.wsdl.WSDLInterface; -import org.apache.tuscany.sca.invocation.Invoker; -import org.apache.tuscany.sca.invocation.Message; -import org.apache.tuscany.sca.runtime.RuntimeComponent; -import org.apache.tuscany.sca.runtime.RuntimeComponentService; -import org.w3c.dom.Document; -import org.w3c.dom.Element; - -/** - * Implements a target invoker for BPEL component implementations. - * - * The target invoker is responsible for dispatching invocations to the particular - * component implementation logic. In this example we are simply delegating the - * CRUD operation invocations to the corresponding methods on our fake - * resource manager. - * - * @version $Rev$ $Date$ - */ -public class BPELInvoker implements Invoker { - private final static long TIME_OUT = 2000L; - - protected final Log __log = LogFactory.getLog(getClass()); - - private EmbeddedODEServer odeServer; - private TransactionManager txMgr; - - private RuntimeComponentService service; - private Operation operation; - private QName bpelServiceName; - private String bpelOperationName; - private Part bpelOperationInputPart; - private Part bpelOperationOutputPart; - private RuntimeComponent component; - // Marks if this service has a callback interface - private Boolean isCallback = false; - private EndpointReference callbackEPR; - - public BPELInvoker(RuntimeComponent component, RuntimeComponentService service, Operation operation, - EmbeddedODEServer odeServer, TransactionManager txMgr) { - this.service = service; - this.component = component; - this.operation = operation; - this.bpelOperationName = operation.getName(); - this.odeServer = odeServer; - this.txMgr = txMgr; - this.isCallback = serviceHasCallback( service ); - - initializeInvocation(); - } // end method BPELInvoker - - private boolean serviceHasCallback( RuntimeComponentService service ) { - if(service.getInterfaceContract().getCallbackInterface() != null) return true; - return false; - } // end method serviceHasCallback - - private void initializeInvocation() { - - __log.debug("Initializing BPELInvoker"); - - Interface interfaze = operation.getInterface(); - if(interfaze instanceof WSDLInterface){ - WSDLInterface wsdlInterface = null; - wsdlInterface = (WSDLInterface) interfaze; - - // Fetch the service name from the service object - including the componentURI guarantees a unique service name - String componentURI = component.getURI(); - bpelServiceName = new QName( Base.SCA11_TUSCANY_NS, componentURI + service.getName() ); - - bpelOperationInputPart = (Part) wsdlInterface.getPortType().getOperation(bpelOperationName,null,null).getInput().getMessage().getParts().values().iterator().next(); - bpelOperationOutputPart = (Part) wsdlInterface.getPortType().getOperation(bpelOperationName,null,null).getOutput().getMessage().getParts().values().iterator().next(); - } - } // end method initializeInvocation - - public Message invoke(Message msg) { - try { - if( isCallback ) { - // Extract the callback endpoint metadata - callbackEPR = msg.getFrom(); - } // end if - Object[] args = msg.getBody(); - Object resp = doTheWork(args); - msg.setBody(resp); - } catch (InvocationTargetException e) { - msg.setFaultBody(e.getCause()); - } - return msg; - } - - public Object doTheWork(Object[] args) throws InvocationTargetException { - Element response = null; - - if(! (operation.getInterface() instanceof WSDLInterface)) { - throw new InvocationTargetException(null,"Unsupported service contract"); - } - - org.apache.ode.bpel.iapi.MyRoleMessageExchange mex = null; - Future<?> onhold = null; - - //Process the BPEL process invocation - Long processID = 0L; - try { - txMgr.begin(); - mex = odeServer.getBpelServer().getEngine().createMessageExchange(new GUID().toString(), - bpelServiceName, - bpelOperationName); - //TODO - this will not be true for OneWay operations - need to handle those - mex.setProperty("isTwoWay", "true"); - onhold = mex.invoke(createInvocationMessage(mex, args)); - - txMgr.commit(); - // Deal with callback cases - store the callback metadata by process instance ID - if( isCallback ) { - processID = odeServer.getProcessIDFromMex(mex.getMessageExchangeId()); - // Store the callback metadata for this invocation - odeServer.saveCallbackMetadata( processID, service.getName(), callbackEPR ); - } // end if - } catch (Exception e) { - try { - txMgr.rollback(); - } catch (SystemException se) { - - } - throw new InvocationTargetException(e, "Error invoking BPEL process : " + e.getMessage()); - } // end try - - // Waiting until the reply is ready in case the engine needs to continue in a different thread - if (onhold != null) { - try { - //add timeout to avoid blocking when there is a exception/failure - onhold.get(TIME_OUT, TimeUnit.MILLISECONDS); - } catch (Exception e) { - throw new InvocationTargetException(e,"Error invoking BPEL process : " + e.getMessage()); - } // end try - } // end if - - //Process the BPEL invocation response - try { - txMgr.begin(); - // Reloading the mex in the current transaction, otherwise we can't - // be sure we have the "freshest" one. - mex = (MyRoleMessageExchange)odeServer.getBpelServer().getEngine().getMessageExchange(mex.getMessageExchangeId()); - - Status status = mex.getStatus(); - - switch (status) { - case FAULT: - if (__log.isDebugEnabled()) - __log.debug("Fault response message: " + mex.getFault()); - throw new ODEInvocationException("FAULT received from BPEL process : " + mex.getFault() - + " " - + mex.getFaultExplanation()); - case ASYNC: - case RESPONSE: - //process the method invocation result - response = processResponse(mex.getResponse().getMessage()); - if (__log.isDebugEnabled()) - __log.debug("Response message " + response); - break; - case FAILURE: - if (__log.isDebugEnabled()) - __log.debug("Failure response message: " + mex.getFault()); - break; - default: - throw new ODEInvocationException("FAILURE received from BPEL process : " + mex.getStatus() + " - " + mex.getFault()); - } // end switch - - txMgr.commit(); - // end of transaction two - } catch (Exception e) { - try { - txMgr.rollback(); - } catch (SystemException se) { - - } - throw new InvocationTargetException(e, "Error retrieving BPEL process invocation status : " + e.getMessage()); - } // end try - - // Cleanup the ODE MessageExchange object - //mex.release(); - - return response; - } - - /** - * Create BPEL Invocation message - * - * BPEL invocation message like : - * <message> - * <TestPart> - * <hello xmlns="http://tuscany.apache.org/implementation/bpel/example/helloworld.wsdl">Hello</hello> - * </TestPart> - * </message> - * @param args - * @return - */ - private org.apache.ode.bpel.iapi.Message createInvocationMessage(org.apache.ode.bpel.iapi.MyRoleMessageExchange mex, Object[] args) { - Document dom = DOMUtils.newDocument(); - - Element contentMessage = dom.createElement("message"); - Element contentPart = dom.createElement(bpelOperationInputPart.getName()); - Element payload = null; - - // TODO handle WSDL input messages with multiple Parts... - //TUSCANY-2321 - Properly handling Document or Element types - if(args[0] instanceof Document) { - payload = (Element) ((Document) args[0]).getFirstChild(); - } else { - payload = (Element) args[0]; - } - - contentPart.appendChild(dom.importNode(payload, true)); - contentMessage.appendChild(contentPart); - dom.appendChild(contentMessage); - - if (__log.isDebugEnabled()) { - __log.debug("Creating invocation message:"); - __log.debug(">> args.....: " + DOMUtils.domToString(payload)); - __log.debug(">> message..:" + DOMUtils.domToString(dom.getDocumentElement())); - } - - org.apache.ode.bpel.iapi.Message request = mex.createMessage(new QName("", "")); - request.setMessage(dom.getDocumentElement()); - - return request; - } - - /** - * Process BPEL response - * - * <message> - * <TestPart> - * <hello xmlns="http://tuscany.apache.org/implementation/bpel/example/helloworld.wsdl">World</hello> - * </TestPart> - * </message> - * - * @param response - * @return - */ - private Element processResponse(Element response) { - return (Element) DOMUtils.findChildByName(response, new QName("",bpelOperationOutputPart.getName())).getFirstChild(); - - // MJE, 12/06/2009 - changed to return the message without the PART wrapper element, since this element is not - // transmitted in the SOAP messages on the wire - } // end method processResponse -} // end class BPELInvoker |