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Posted to commits@tuscany.apache.org by an...@apache.org on 2011/05/14 09:53:45 UTC
svn commit: r1102970 -
/tuscany/sca-java-2.x/trunk/modules/domain-node/src/main/java/org/apache/tuscany/sca/impl/ServiceHelper.java
Author: antelder
Date: Sat May 14 07:53:44 2011
New Revision: 1102970
URL: http://svn.apache.org/viewvc?rev=1102970&view=rev
Log:
Move all the code for making service proxys to a seperate helper class. Seems like a lot of this should be provided by the Tuscany SPI somewhere but need to work out the best places
Added:
tuscany/sca-java-2.x/trunk/modules/domain-node/src/main/java/org/apache/tuscany/sca/impl/ServiceHelper.java
Added: tuscany/sca-java-2.x/trunk/modules/domain-node/src/main/java/org/apache/tuscany/sca/impl/ServiceHelper.java
URL: http://svn.apache.org/viewvc/tuscany/sca-java-2.x/trunk/modules/domain-node/src/main/java/org/apache/tuscany/sca/impl/ServiceHelper.java?rev=1102970&view=auto
==============================================================================
--- tuscany/sca-java-2.x/trunk/modules/domain-node/src/main/java/org/apache/tuscany/sca/impl/ServiceHelper.java (added)
+++ tuscany/sca-java-2.x/trunk/modules/domain-node/src/main/java/org/apache/tuscany/sca/impl/ServiceHelper.java Sat May 14 07:53:44 2011
@@ -0,0 +1,182 @@
+/*
+ * 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.impl;
+
+import java.util.List;
+
+import org.apache.tuscany.sca.assembly.AssemblyFactory;
+import org.apache.tuscany.sca.assembly.Component;
+import org.apache.tuscany.sca.assembly.ComponentReference;
+import org.apache.tuscany.sca.assembly.ComponentService;
+import org.apache.tuscany.sca.assembly.Endpoint;
+import org.apache.tuscany.sca.assembly.EndpointReference;
+import org.apache.tuscany.sca.assembly.Multiplicity;
+import org.apache.tuscany.sca.assembly.Service;
+import org.apache.tuscany.sca.context.CompositeContext;
+import org.apache.tuscany.sca.core.ExtensionPointRegistry;
+import org.apache.tuscany.sca.core.FactoryExtensionPoint;
+import org.apache.tuscany.sca.core.invocation.ExtensibleProxyFactory;
+import org.apache.tuscany.sca.core.invocation.ProxyFactory;
+import org.apache.tuscany.sca.core.invocation.ProxyFactoryExtensionPoint;
+import org.apache.tuscany.sca.deployment.Deployer;
+import org.apache.tuscany.sca.interfacedef.Interface;
+import org.apache.tuscany.sca.interfacedef.InterfaceContract;
+import org.apache.tuscany.sca.interfacedef.InvalidInterfaceException;
+import org.apache.tuscany.sca.interfacedef.java.JavaInterface;
+import org.apache.tuscany.sca.interfacedef.java.JavaInterfaceFactory;
+import org.apache.tuscany.sca.runtime.EndpointRegistry;
+import org.apache.tuscany.sca.runtime.RuntimeComponent;
+import org.apache.tuscany.sca.runtime.RuntimeComponentReference;
+import org.apache.tuscany.sca.runtime.RuntimeEndpointReference;
+import org.oasisopen.sca.NoSuchServiceException;
+import org.oasisopen.sca.ServiceRuntimeException;
+
+/**
+ * All the code for creating a service proxy in this helper class as it feels like
+ * it doesn't all belong in the node but i can't see where to refactor it to yet.
+ * (perhaps its just the remote proxy bit that needs to go somewhere else?)
+ */
+public class ServiceHelper {
+
+ public static <T> T getService(Class<T> interfaze, String serviceURI, EndpointRegistry endpointRegistry, ExtensionPointRegistry extensionPointRegistry, Deployer deployer) throws NoSuchServiceException {
+
+ List<Endpoint> endpoints = endpointRegistry.findEndpoint(serviceURI);
+ if (endpoints.size() < 1) {
+ throw new NoSuchServiceException(serviceURI);
+ }
+
+ String serviceName = null;
+ if (serviceURI.contains("/")) {
+ int i = serviceURI.indexOf("/");
+ if (i < serviceURI.length() - 1) {
+ serviceName = serviceURI.substring(i + 1);
+ }
+ }
+
+ Endpoint ep = endpoints.get(0);
+ if (((RuntimeComponent)ep.getComponent()).getComponentContext() != null) {
+ return ((RuntimeComponent)ep.getComponent()).getServiceReference(interfaze, serviceName).getService();
+ } else {
+ return getRemoteProxy(interfaze, ep, endpointRegistry, extensionPointRegistry, deployer);
+ }
+ }
+
+ private static <T> T getRemoteProxy(Class<T> serviceInterface, Endpoint endpoint, EndpointRegistry endpointRegistry, ExtensionPointRegistry extensionPointRegistry, Deployer deployer) throws NoSuchServiceException {
+ FactoryExtensionPoint factories = extensionPointRegistry.getExtensionPoint(FactoryExtensionPoint.class);
+ AssemblyFactory assemblyFactory = factories.getFactory(AssemblyFactory.class);
+ JavaInterfaceFactory javaInterfaceFactory = factories.getFactory(JavaInterfaceFactory.class);
+ ProxyFactory proxyFactory =
+ new ExtensibleProxyFactory(extensionPointRegistry.getExtensionPoint(ProxyFactoryExtensionPoint.class));
+
+ CompositeContext compositeContext =
+ new CompositeContext(extensionPointRegistry, endpointRegistry, null, null, null,
+ deployer.getSystemDefinitions());
+
+ RuntimeEndpointReference epr;
+ try {
+ epr =
+ createEndpointReference(javaInterfaceFactory,
+ compositeContext,
+ assemblyFactory,
+ endpoint,
+ serviceInterface);
+ } catch (Exception e) {
+ throw new ServiceRuntimeException(e);
+ }
+
+ return proxyFactory.createProxy(serviceInterface, epr);
+ }
+
+ private static RuntimeEndpointReference createEndpointReference(JavaInterfaceFactory javaInterfaceFactory,
+ CompositeContext compositeContext,
+ AssemblyFactory assemblyFactory,
+ Endpoint endpoint,
+ Class<?> businessInterface)
+ throws CloneNotSupportedException, InvalidInterfaceException {
+ Component component = endpoint.getComponent();
+ ComponentService service = endpoint.getService();
+ ComponentReference componentReference = assemblyFactory.createComponentReference();
+ componentReference.setName("sca.client." + service.getName());
+
+ componentReference.setCallback(service.getCallback());
+ componentReference.getTargets().add(service);
+ componentReference.getPolicySets().addAll(service.getPolicySets());
+ componentReference.getRequiredIntents().addAll(service.getRequiredIntents());
+ componentReference.getBindings().add(endpoint.getBinding());
+
+ InterfaceContract interfaceContract = service.getInterfaceContract();
+ Service componentTypeService = service.getService();
+ if (componentTypeService != null && componentTypeService.getInterfaceContract() != null) {
+ interfaceContract = componentTypeService.getInterfaceContract();
+ }
+ interfaceContract = getInterfaceContract(javaInterfaceFactory, interfaceContract, businessInterface);
+ componentReference.setInterfaceContract(interfaceContract);
+ componentReference.setMultiplicity(Multiplicity.ONE_ONE);
+ // component.getReferences().add(componentReference);
+
+ // create endpoint reference
+ EndpointReference endpointReference = assemblyFactory.createEndpointReference();
+ endpointReference.setComponent(component);
+ endpointReference.setReference(componentReference);
+ endpointReference.setBinding(endpoint.getBinding());
+ endpointReference.setUnresolved(false);
+ endpointReference.setStatus(EndpointReference.Status.WIRED_TARGET_FOUND_AND_MATCHED);
+
+ endpointReference.setTargetEndpoint(endpoint);
+
+ componentReference.getEndpointReferences().add(endpointReference);
+ ((RuntimeComponentReference)componentReference).setComponent((RuntimeComponent)component);
+ ((RuntimeEndpointReference)endpointReference).bind(compositeContext);
+
+ return (RuntimeEndpointReference)endpointReference;
+ }
+
+ private static InterfaceContract getInterfaceContract(JavaInterfaceFactory javaInterfaceFactory,
+ InterfaceContract interfaceContract,
+ Class<?> businessInterface) throws CloneNotSupportedException,
+ InvalidInterfaceException {
+ if (businessInterface == null) {
+ return interfaceContract;
+ }
+ boolean compatible = false;
+ if (interfaceContract != null && interfaceContract.getInterface() != null) {
+ Interface interfaze = interfaceContract.getInterface();
+ if (interfaze instanceof JavaInterface) {
+ Class<?> cls = ((JavaInterface)interfaze).getJavaClass();
+ if (cls != null && businessInterface.isAssignableFrom(cls)) {
+ compatible = true;
+ }
+ }
+ }
+
+ if (!compatible) {
+ // The interface is not assignable from the interface contract
+ interfaceContract = javaInterfaceFactory.createJavaInterfaceContract();
+ JavaInterface callInterface = javaInterfaceFactory.createJavaInterface(businessInterface);
+ interfaceContract.setInterface(callInterface);
+ if (callInterface.getCallbackClass() != null) {
+ interfaceContract.setCallbackInterface(javaInterfaceFactory.createJavaInterface(callInterface
+ .getCallbackClass()));
+ }
+ }
+
+ return interfaceContract;
+ }
+}