diff options
Diffstat (limited to 'sca-java-2.x/tags/2.0-Beta2-RC1/modules/binding-sca-runtime/src/main/java/org/apache/tuscany/sca/binding/sca/provider/SCABindingInvoker.java')
-rw-r--r-- | sca-java-2.x/tags/2.0-Beta2-RC1/modules/binding-sca-runtime/src/main/java/org/apache/tuscany/sca/binding/sca/provider/SCABindingInvoker.java | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/sca-java-2.x/tags/2.0-Beta2-RC1/modules/binding-sca-runtime/src/main/java/org/apache/tuscany/sca/binding/sca/provider/SCABindingInvoker.java b/sca-java-2.x/tags/2.0-Beta2-RC1/modules/binding-sca-runtime/src/main/java/org/apache/tuscany/sca/binding/sca/provider/SCABindingInvoker.java new file mode 100644 index 0000000000..de0b1cfe0e --- /dev/null +++ b/sca-java-2.x/tags/2.0-Beta2-RC1/modules/binding-sca-runtime/src/main/java/org/apache/tuscany/sca/binding/sca/provider/SCABindingInvoker.java @@ -0,0 +1,167 @@ +/* + * 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.binding.sca.provider; + +import org.apache.tuscany.sca.core.ExtensionPointRegistry; +import org.apache.tuscany.sca.core.FactoryExtensionPoint; +import org.apache.tuscany.sca.core.invocation.AsyncResponseInvoker; +import org.apache.tuscany.sca.core.invocation.InterceptorAsyncImpl; +import org.apache.tuscany.sca.databinding.Mediator; +import org.apache.tuscany.sca.interfacedef.Operation; +import org.apache.tuscany.sca.invocation.InvocationChain; +import org.apache.tuscany.sca.invocation.Invoker; +import org.apache.tuscany.sca.invocation.InvokerAsyncRequest; +import org.apache.tuscany.sca.invocation.InvokerAsyncResponse; +import org.apache.tuscany.sca.invocation.Message; +import org.apache.tuscany.sca.invocation.MessageFactory; +import org.apache.tuscany.sca.invocation.Phase; +import org.apache.tuscany.sca.runtime.RuntimeEndpoint; +import org.apache.tuscany.sca.runtime.RuntimeEndpointReference; + + +/** + * @version $Rev$ $Date$ + */ +public class SCABindingInvoker extends InterceptorAsyncImpl { + private InvocationChain chain; + private Mediator mediator; + private Operation sourceOperation; + private Operation targetOperation; + private boolean passByValue; + private RuntimeEndpointReference epr; + private RuntimeEndpoint ep; + private ExtensionPointRegistry registry; + + /** + * Construct a SCABindingInvoker that delegates to the service invocation chain + */ + public SCABindingInvoker(InvocationChain chain, Operation sourceOperation, Mediator mediator, + boolean passByValue, RuntimeEndpointReference epr, ExtensionPointRegistry registry) { + super(); + this.chain = chain; + this.mediator = mediator; + this.sourceOperation = sourceOperation; + this.targetOperation = chain.getTargetOperation(); + this.passByValue = passByValue; + this.epr = epr; + this.ep = (RuntimeEndpoint)epr.getTargetEndpoint(); + this.registry = registry; + } + + /** + * @see org.apache.tuscany.sca.invocation.Interceptor#getNext() + */ + public Invoker getNext() { + return chain.getHeadInvoker(Phase.SERVICE_POLICY); + } + + /** + * @see org.apache.tuscany.sca.invocation.Interceptor#setNext(org.apache.tuscany.sca.invocation.Invoker) + */ + public void setNext(Invoker next) { + // NOOP + } + + public Message processRequest(Message msg){ + if (passByValue) { + msg.setBody(mediator.copyInput(msg.getBody(), sourceOperation, targetOperation)); + } // end if + + ep.getInvocationChains(); + if ( !ep.getCallbackEndpointReferences().isEmpty() ) { + RuntimeEndpointReference asyncEPR = (RuntimeEndpointReference) ep.getCallbackEndpointReferences().get(0); + // Place a link to the callback EPR into the message headers... + msg.getHeaders().put("ASYNC_CALLBACK", asyncEPR ); + } // end if + + if( ep.isAsyncInvocation() ) { + // Get the message ID + String msgID = (String)msg.getHeaders().get("MESSAGE_ID"); + + String operationName = msg.getOperation().getName(); + + // Create a response invoker and add it to the message headers + AsyncResponseInvoker<RuntimeEndpointReference> respInvoker = + new AsyncResponseInvoker<RuntimeEndpointReference>(ep, null, epr, msgID, operationName, getMessageFactory()); + respInvoker.setBindingType("SCA_LOCAL"); + msg.getHeaders().put("ASYNC_RESPONSE_INVOKER", respInvoker); + } // end if + + return msg; + } // end method processRequest + + /** + * Regular (sync) processing of response message + */ + public Message processResponse(Message msg){ + if (passByValue) { + // Note source and target operation swapped so result is in source class loader + if (msg.isFault()) { + msg.setFaultBody(mediator.copyFault(msg.getBody(), sourceOperation, targetOperation)); + } else { + if (sourceOperation.getOutputType() != null) { + msg.setBody(mediator.copyOutput(msg.getBody(), sourceOperation, targetOperation)); + } // end if + } // end if + } // end if + + return msg; + } // end method processResponse + + public void invokeAsyncRequest(Message msg) throws Throwable { + try{ + msg = processRequest(msg); + InvokerAsyncRequest theNext = (InvokerAsyncRequest)getNext(); + if( theNext != null ) theNext.invokeAsyncRequest(msg); + postProcessRequest(msg); + } catch (Throwable e) { + postProcessRequest(msg, e); + } // end try + } // end method invokeAsyncRequest + + public void invokeAsyncResponse(Message msg) { + msg = processResponse(msg); + + // Handle async response Relates_To message ID value + @SuppressWarnings("unchecked") + AsyncResponseInvoker<RuntimeEndpointReference> respInvoker = + (AsyncResponseInvoker<RuntimeEndpointReference>)msg.getHeaders().get("ASYNC_RESPONSE_INVOKER"); + // TODO - this deals with the Local case only - not distributed + if( respInvoker != null && "SCA_LOCAL".equals(respInvoker.getBindingType()) ) { + RuntimeEndpointReference responseEPR = respInvoker.getResponseTargetAddress(); + msg.setFrom(responseEPR); + String msgID = respInvoker.getRelatesToMsgID(); + msg.getHeaders().put("RELATES_TO", msgID); + } // end if + + InvokerAsyncResponse thePrevious = (InvokerAsyncResponse)getPrevious(); + if (thePrevious != null ) thePrevious.invokeAsyncResponse(msg); + } // end method invokeAsyncResponse + + public boolean isLocalSCABIndingInvoker() { + return true; + } + + private MessageFactory getMessageFactory() { + FactoryExtensionPoint modelFactories = registry.getExtensionPoint(FactoryExtensionPoint.class); + return modelFactories.getFactory(MessageFactory.class); + } // end method getMessageFactory + +} |