| /* |
| * 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.core.context.impl; |
| |
| import java.io.IOException; |
| import java.io.ObjectInput; |
| import java.io.ObjectOutput; |
| import java.io.StringWriter; |
| import java.security.AccessController; |
| import java.security.PrivilegedAction; |
| |
| import javax.xml.stream.XMLInputFactory; |
| import javax.xml.stream.XMLOutputFactory; |
| import javax.xml.stream.XMLStreamException; |
| import javax.xml.stream.XMLStreamWriter; |
| |
| import org.apache.tuscany.sca.assembly.AssemblyFactory; |
| import org.apache.tuscany.sca.assembly.Binding; |
| import org.apache.tuscany.sca.assembly.ComponentService; |
| import org.apache.tuscany.sca.assembly.CompositeService; |
| import org.apache.tuscany.sca.assembly.EndpointReference; |
| import org.apache.tuscany.sca.assembly.Service; |
| import org.apache.tuscany.sca.assembly.builder.BindingBuilder; |
| import org.apache.tuscany.sca.assembly.builder.BuilderContext; |
| import org.apache.tuscany.sca.assembly.builder.BuilderExtensionPoint; |
| import org.apache.tuscany.sca.context.CompositeContext; |
| import org.apache.tuscany.sca.contribution.processor.ContributionWriteException; |
| import org.apache.tuscany.sca.contribution.processor.ProcessorContext; |
| import org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessor; |
| import org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessorExtensionPoint; |
| import org.apache.tuscany.sca.core.ExtensionPointRegistry; |
| import org.apache.tuscany.sca.core.FactoryExtensionPoint; |
| import org.apache.tuscany.sca.core.assembly.RuntimeAssemblyFactory; |
| import org.apache.tuscany.sca.core.assembly.impl.RuntimeEndpointReferenceImpl; |
| import org.apache.tuscany.sca.core.context.ServiceReferenceExt; |
| import org.apache.tuscany.sca.core.factory.ObjectCreationException; |
| import org.apache.tuscany.sca.core.invocation.ExtensibleProxyFactory; |
| import org.apache.tuscany.sca.core.invocation.ProxyFactory; |
| import org.apache.tuscany.sca.core.invocation.impl.AsyncJDKInvocationHandler; |
| import org.apache.tuscany.sca.core.invocation.impl.DOMInvokerImpl; |
| 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.invocation.MessageFactory; |
| import org.apache.tuscany.sca.runtime.DOMInvoker; |
| import org.apache.tuscany.sca.runtime.Invocable; |
| 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.ServiceRuntimeException; |
| import org.w3c.dom.Node; |
| |
| /** |
| * Default implementation of a ServiceReference. |
| * |
| * @version $Rev$ $Date$ |
| * @param <B> the type of the business interface |
| */ |
| public class ServiceReferenceImpl<B> implements ServiceReferenceExt<B> { |
| private static final long serialVersionUID = 6763709434194361540L; |
| |
| protected transient ProxyFactory proxyFactory; |
| protected transient Class<B> businessInterface; |
| protected transient B proxy; |
| |
| protected Object callbackID; // The callbackID should be serializable |
| |
| protected transient RuntimeEndpointReference endpointReference; |
| |
| // protected String scdl; |
| // |
| // private transient XMLStreamReader xmlReader; |
| |
| protected transient CompositeContext compositeContext; |
| protected ExtensionPointRegistry registry; |
| protected FactoryExtensionPoint modelFactories; |
| protected RuntimeAssemblyFactory assemblyFactory; |
| protected StAXArtifactProcessorExtensionPoint staxProcessors; |
| protected StAXArtifactProcessor<EndpointReference> staxProcessor; |
| protected XMLInputFactory xmlInputFactory; |
| protected XMLOutputFactory xmlOutputFactory; |
| protected BuilderExtensionPoint builders; |
| |
| private MessageFactory messageFactory; |
| |
| /* |
| * Public constructor for Externalizable serialization/deserialization |
| */ |
| public ServiceReferenceImpl() { |
| super(); |
| } |
| |
| public ServiceReferenceImpl(Class<B> businessInterface, |
| Invocable endpointReference, |
| CompositeContext compositeContext) { |
| this.businessInterface = businessInterface; |
| this.endpointReference = (RuntimeEndpointReference) endpointReference; |
| if (compositeContext == null) { |
| compositeContext = endpointReference.getCompositeContext(); |
| } |
| bind(compositeContext); |
| } |
| |
| public ServiceReferenceImpl(Class<B> businessInterface, |
| Invocable endpointReference) { |
| this(businessInterface, endpointReference, null); |
| } |
| |
| protected void bind(CompositeContext context) { |
| this.compositeContext = context; |
| this.registry = compositeContext.getExtensionPointRegistry(); |
| this.modelFactories = registry.getExtensionPoint(FactoryExtensionPoint.class); |
| this.assemblyFactory = (RuntimeAssemblyFactory)modelFactories.getFactory(AssemblyFactory.class); |
| this.xmlInputFactory = modelFactories.getFactory(XMLInputFactory.class); |
| this.xmlOutputFactory = modelFactories.getFactory(XMLOutputFactory.class); |
| this.staxProcessors = registry.getExtensionPoint(StAXArtifactProcessorExtensionPoint.class); |
| this.staxProcessor = staxProcessors.getProcessor(EndpointReference.class); |
| this.builders = registry.getExtensionPoint(BuilderExtensionPoint.class); |
| this.proxyFactory = ExtensibleProxyFactory.getInstance(registry); |
| FactoryExtensionPoint modelFactories = registry.getExtensionPoint(FactoryExtensionPoint.class); |
| this.messageFactory = modelFactories.getFactory(MessageFactory.class); |
| } |
| |
| public RuntimeEndpointReference getEndpointReference() { |
| return endpointReference; |
| } |
| |
| public B getProxy() throws ObjectCreationException { |
| try { |
| if (proxy == null) { |
| proxy = createProxy(); |
| } |
| return proxy; |
| } catch (Exception e) { |
| throw new ObjectCreationException(e); |
| } |
| } |
| |
| public void setProxy(B proxy) { |
| this.proxy = proxy; |
| } |
| |
| protected B createProxy() throws Exception { |
| return proxyFactory.createProxy(this); |
| } |
| |
| public B getService() { |
| try { |
| resolve(); |
| return getProxy(); |
| } catch (Exception e) { |
| throw new ServiceRuntimeException(e); |
| } |
| } |
| |
| public Class<B> getBusinessInterface() { |
| try { |
| resolve(); |
| return businessInterface; |
| } catch (Exception e) { |
| throw new ServiceRuntimeException(e); |
| } |
| } |
| |
| /** |
| * Follow a service promotion chain down to the inner most (non composite) |
| * component service. |
| * |
| * @param topCompositeService |
| * @return |
| */ |
| private ComponentService getPromotedComponentService(CompositeService compositeService) { |
| ComponentService componentService = compositeService.getPromotedService(); |
| if (componentService != null) { |
| Service service = componentService.getService(); |
| if (componentService.getName() != null && service instanceof CompositeService) { |
| |
| // Continue to follow the service promotion chain |
| return getPromotedComponentService((CompositeService)service); |
| |
| } else { |
| |
| // Found a non-composite service |
| return componentService; |
| } |
| } else { |
| |
| // No promoted service |
| return null; |
| } |
| } |
| |
| // ============ WRITE AND READ THE REFERENCE TO EXTERNAL XML ======================== |
| |
| /** |
| * write the reference to a stream |
| * |
| * @see java.io.Externalizable#writeExternal(java.io.ObjectOutput) |
| */ |
| public void writeExternal(ObjectOutput out) throws IOException { |
| out.writeObject(endpointReference); |
| /* |
| try { |
| String xml = null; |
| if (scdl == null) { |
| xml = toXMLString(); |
| } else { |
| xml = scdl; |
| } |
| |
| if (xml == null) { |
| out.writeBoolean(false); |
| } else { |
| out.writeBoolean(true); |
| out.writeUTF(xml); |
| } |
| } catch (Exception e) { |
| // e.printStackTrace(); |
| throw new IOException(e.toString()); |
| } |
| */ |
| } |
| |
| /** |
| * write the endpoint reference into an xml string |
| */ |
| public String toXMLString() throws IOException, XMLStreamException, ContributionWriteException { |
| StringWriter writer = new StringWriter(); |
| XMLStreamWriter streamWriter = xmlOutputFactory.createXMLStreamWriter(writer); |
| staxProcessor.write(endpointReference, streamWriter, new ProcessorContext(registry)); |
| return writer.toString(); |
| } |
| |
| /** |
| * Read the reference from a stream |
| * |
| * @see java.io.Externalizable#readExternal(java.io.ObjectInput) |
| */ |
| public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException { |
| this.endpointReference = (RuntimeEndpointReference) in.readObject(); |
| // Force resolve |
| endpointReference.getComponent(); |
| bind(endpointReference.getCompositeContext()); |
| |
| RuntimeComponentReference reference = (RuntimeComponentReference)endpointReference.getReference(); |
| reference.setComponent((RuntimeComponent)endpointReference.getComponent()); |
| |
| Interface i = reference.getInterfaceContract().getInterface(); |
| if (i instanceof JavaInterface) { |
| JavaInterface javaInterface = (JavaInterface)i; |
| if (javaInterface.isUnresolved()) { |
| // Allow privileged access to get ClassLoader. Requires RuntimePermission in |
| // security policy. |
| ClassLoader classLoader = AccessController.doPrivileged(new PrivilegedAction<ClassLoader>() { |
| public ClassLoader run() { |
| return Thread.currentThread().getContextClassLoader(); |
| } |
| }); |
| |
| javaInterface.setJavaClass(classLoader.loadClass(javaInterface.getName())); |
| JavaInterfaceFactory javaInterfaceFactory = getJavaInterfaceFactory(compositeContext); |
| |
| try { |
| javaInterfaceFactory.createJavaInterface(javaInterface, javaInterface.getJavaClass()); |
| } catch (InvalidInterfaceException e) { |
| throw new ServiceRuntimeException(e); |
| } |
| //FIXME: If the interface needs XSDs to be loaded (e.g., for static SDO), |
| // this needs to be done here. We usually search for XSDs in the current |
| // contribution at resolve time. Is it possible to locate the current |
| // contribution at runtime? |
| } |
| this.businessInterface = (Class<B>)javaInterface.getJavaClass(); |
| } |
| |
| Binding binding = endpointReference.getBinding(); |
| if (binding != null) { |
| BindingBuilder bindingBuilder = builders.getBindingBuilder(binding.getType()); |
| if (bindingBuilder != null) { |
| org.apache.tuscany.sca.assembly.builder.BuilderContext context = new BuilderContext(registry); |
| bindingBuilder.build(endpointReference.getComponent(), reference, endpointReference.getBinding(), context, false); |
| } |
| } |
| |
| this.proxyFactory = getProxyFactory(this.compositeContext); |
| |
| /* |
| endpointReference.bind(CompositeContext.getCurrentCompositeContext()); |
| endpointReference.rebuild(); |
| */ |
| /* |
| final boolean hasSCDL = in.readBoolean(); |
| if (hasSCDL) { |
| this.scdl = in.readUTF(); |
| } else { |
| this.scdl = null; |
| } |
| */ |
| } |
| |
| /** |
| * Read xml string into the endpoint reference |
| */ |
| /* |
| public void fromXMLString() throws IOException, XMLStreamException, ContributionReadException { |
| |
| XMLStreamReader streamReader = xmlReader; |
| |
| if (scdl != null) { |
| Reader reader = new StringReader(scdl); |
| |
| if (xmlInputFactory == null) { |
| // this is a reference being read from a external stream |
| // so set up enough of the reference in order to resolved the |
| // xml being read |
| bind(CompositeContext.getCurrentCompositeContext()); |
| } |
| |
| streamReader = xmlInputFactory.createXMLStreamReader(reader); |
| } |
| |
| endpointReference = (RuntimeEndpointReference) staxProcessor.read(streamReader, new ProcessorContext(registry)); |
| |
| // ok to GC |
| xmlReader = null; |
| scdl = null; |
| } |
| */ |
| |
| /** |
| * @throws IOException |
| */ |
| private synchronized void resolve() throws Exception { |
| /* |
| if ((scdl != null || xmlReader != null) && endpointReference == null) { |
| fromXMLString(); |
| |
| compositeContext.bindComponent((RuntimeComponent) endpointReference.getComponent()); |
| |
| RuntimeComponentReference reference = (RuntimeComponentReference)endpointReference.getReference(); |
| reference.setComponent((RuntimeComponent)endpointReference.getComponent()); |
| |
| ReferenceParameters parameters = null; |
| for (Object ext : reference.getExtensions()) { |
| if (ext instanceof ReferenceParameters) { |
| parameters = (ReferenceParameters)ext; |
| break; |
| } |
| } |
| |
| if (parameters != null) { |
| this.callbackID = parameters.getCallbackID(); |
| } |
| |
| Interface i = reference.getInterfaceContract().getInterface(); |
| if (i instanceof JavaInterface) { |
| JavaInterface javaInterface = (JavaInterface)i; |
| if (javaInterface.isUnresolved()) { |
| // Allow privileged access to get ClassLoader. Requires RuntimePermission in |
| // security policy. |
| ClassLoader classLoader = AccessController.doPrivileged(new PrivilegedAction<ClassLoader>() { |
| public ClassLoader run() { |
| return Thread.currentThread().getContextClassLoader(); |
| } |
| }); |
| |
| javaInterface.setJavaClass(classLoader.loadClass(javaInterface.getName())); |
| JavaInterfaceFactory javaInterfaceFactory = getJavaInterfaceFactory(compositeContext); |
| |
| javaInterfaceFactory.createJavaInterface(javaInterface, javaInterface.getJavaClass()); |
| //FIXME: If the interface needs XSDs to be loaded (e.g., for static SDO), |
| // this needs to be done here. We usually search for XSDs in the current |
| // contribution at resolve time. Is it possible to locate the current |
| // contribution at runtime? |
| } |
| this.businessInterface = (Class<B>)javaInterface.getJavaClass(); |
| } |
| |
| Binding binding = endpointReference.getBinding(); |
| if (binding != null) { |
| BindingBuilder bindingBuilder = builders.getBindingBuilder(binding.getType()); |
| if (bindingBuilder != null) { |
| BuilderContext context = new BuilderContext(registry); |
| bindingBuilder.build(endpointReference.getComponent(), reference, endpointReference.getBinding(), context); |
| } |
| } |
| |
| this.proxyFactory = getProxyFactory(this.compositeContext); |
| } else if (compositeContext == null) { |
| this.compositeContext = CompositeContext.getCurrentCompositeContext(); |
| if (this.compositeContext != null) { |
| this.proxyFactory = getProxyFactory(this.compositeContext); |
| } |
| } |
| */ |
| } |
| |
| private JavaInterfaceFactory getJavaInterfaceFactory(CompositeContext compositeContext) { |
| ExtensionPointRegistry extensionPointRegistry = compositeContext.getExtensionPointRegistry(); |
| FactoryExtensionPoint factories = extensionPointRegistry.getExtensionPoint(FactoryExtensionPoint.class); |
| JavaInterfaceFactory javaInterfaceFactory = factories.getFactory(JavaInterfaceFactory.class); |
| return javaInterfaceFactory; |
| } |
| |
| private ProxyFactory getProxyFactory(CompositeContext compositeContext) { |
| ExtensionPointRegistry extensionPointRegistry = compositeContext.getExtensionPointRegistry(); |
| return ExtensibleProxyFactory.getInstance(extensionPointRegistry); |
| } |
| |
| // ================================================================================== |
| |
| /* |
| public XMLStreamReader getXMLReader() { |
| return xmlReader; |
| } |
| */ |
| |
| public void setBindingURI(String uri) { |
| ((RuntimeEndpointReferenceImpl)endpointReference).setBindingURI(uri); |
| } |
| |
| public DOMInvoker getDOMInvoker() { |
| |
| RuntimeEndpointReference epr = getEndpointReference(); |
| InterfaceContract ic; |
| try { |
| ic = (InterfaceContract)epr.getGeneratedWSDLContract(epr.getBindingInterfaceContract()).clone(); |
| } catch (CloneNotSupportedException e) { |
| throw new RuntimeException(e); |
| } |
| ic.getInterface().resetDataBinding(Node.class.getName()); |
| |
| ((RuntimeEndpointReferenceImpl)epr).setreferenceInterfaceContract(ic); |
| epr.rebuild(); |
| |
| AsyncJDKInvocationHandler handler = new AsyncJDKInvocationHandler(registry, messageFactory, this); |
| return new DOMInvokerImpl(handler); |
| } |
| } |
