diff options
Diffstat (limited to 'sandbox/ant/sca/tags/2.0-M2/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/impl/JDKInvocationHandler.java')
-rw-r--r-- | sandbox/ant/sca/tags/2.0-M2/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/impl/JDKInvocationHandler.java | 518 |
1 files changed, 0 insertions, 518 deletions
diff --git a/sandbox/ant/sca/tags/2.0-M2/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/impl/JDKInvocationHandler.java b/sandbox/ant/sca/tags/2.0-M2/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/impl/JDKInvocationHandler.java deleted file mode 100644 index ff58a116b7..0000000000 --- a/sandbox/ant/sca/tags/2.0-M2/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/impl/JDKInvocationHandler.java +++ /dev/null @@ -1,518 +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.core.invocation.impl; - -import java.io.Serializable; -import java.lang.reflect.InvocationHandler; -import java.lang.reflect.Method; -import java.lang.reflect.Proxy; -import java.util.HashMap; -import java.util.List; -import java.util.Map; -import java.util.UUID; - -import org.apache.tuscany.sca.core.assembly.impl.RuntimeWireImpl; -import org.apache.tuscany.sca.core.context.CallableReferenceExt; -import org.apache.tuscany.sca.core.context.impl.CallableReferenceImpl; -import org.apache.tuscany.sca.core.conversation.ConversationExt; -import org.apache.tuscany.sca.core.conversation.ConversationManager; -import org.apache.tuscany.sca.core.conversation.ConversationState; -import org.apache.tuscany.sca.core.factory.InstanceWrapper; -import org.apache.tuscany.sca.core.invocation.ThreadMessageContext; -import org.apache.tuscany.sca.core.scope.Scope; -import org.apache.tuscany.sca.core.scope.ScopeContainer; -import org.apache.tuscany.sca.core.scope.ScopedRuntimeComponent; -import org.apache.tuscany.sca.core.scope.TargetDestructionException; -import org.apache.tuscany.sca.core.scope.TargetResolutionException; -import org.apache.tuscany.sca.interfacedef.ConversationSequence; -import org.apache.tuscany.sca.interfacedef.DataType; -import org.apache.tuscany.sca.interfacedef.Interface; -import org.apache.tuscany.sca.interfacedef.InterfaceContract; -import org.apache.tuscany.sca.interfacedef.Operation; -import org.apache.tuscany.sca.interfacedef.java.JavaOperation; -import org.apache.tuscany.sca.invocation.InvocationChain; -import org.apache.tuscany.sca.invocation.Invoker; -import org.apache.tuscany.sca.invocation.Message; -import org.apache.tuscany.sca.invocation.MessageFactory; -import org.apache.tuscany.sca.runtime.EndpointReference; -import org.apache.tuscany.sca.runtime.ReferenceParameters; -import org.apache.tuscany.sca.runtime.RuntimeComponent; -import org.apache.tuscany.sca.runtime.RuntimeWire; -import org.oasisopen.sca.CallableReference; -import org.oasisopen.sca.ConversationEndedException; -import org.oasisopen.sca.ServiceReference; -import org.oasisopen.sca.ServiceRuntimeException; - -/** - * @version $Rev$ $Date$ - */ -public class JDKInvocationHandler implements InvocationHandler, Serializable { - private static final long serialVersionUID = -3366410500152201371L; - - protected boolean conversational; - protected ConversationExt conversation; - protected MessageFactory messageFactory; - protected EndpointReference source; - protected EndpointReference target; - protected RuntimeWire wire; - protected CallableReference<?> callableReference; - protected Class<?> businessInterface; - - protected boolean fixedWire = true; - - protected transient Map<Method, InvocationChain> chains = new HashMap<Method, InvocationChain>(); - - public JDKInvocationHandler(MessageFactory messageFactory, Class<?> businessInterface, RuntimeWire wire) { - this.messageFactory = messageFactory; - this.wire = wire; - this.businessInterface = businessInterface; - init(this.wire); - } - - public JDKInvocationHandler(MessageFactory messageFactory, CallableReference<?> callableReference) { - this.messageFactory = messageFactory; - this.callableReference = callableReference; - if (callableReference != null) { - this.businessInterface = callableReference.getBusinessInterface(); - this.conversation = (ConversationExt)callableReference.getConversation(); - this.wire = ((CallableReferenceExt<?>)callableReference).getRuntimeWire(); - if (wire != null) { - init(wire); - } - } - } - - protected void init(RuntimeWire wire) { - if (wire != null) { - try { - // Clone the endpoint reference so that reference parameters can be changed - source = (EndpointReference)wire.getSource().clone(); - } catch (CloneNotSupportedException e) { - throw new ServiceRuntimeException(e); - } - initConversational(wire); - } - } - - protected void initConversational(RuntimeWire wire) { - InterfaceContract contract = wire.getSource().getInterfaceContract(); - this.conversational = contract.getInterface().isConversational(); - } - - protected Object getCallbackID() { - if (callableReference != null) { - return callableReference.getCallbackID(); - } else { - return null; - } - } - - protected Object getConversationID() { - if (callableReference != null && callableReference instanceof ServiceReference) { - return ((ServiceReference)callableReference).getConversationID(); - } else { - return null; - } - } - - protected Object getCallbackObject() { - if (callableReference != null && callableReference instanceof ServiceReference) { - return ((ServiceReference)callableReference).getCallback(); - } else { - return null; - } - } - - public Object invoke(Object proxy, Method method, Object[] args) throws Throwable { - if (Object.class == method.getDeclaringClass()) { - return invokeObjectMethod(method, args); - } - if (wire == null) { - throw new ServiceRuntimeException("No runtime wire is available"); - } - InvocationChain chain = getInvocationChain(method, wire); - if (chain == null) { - throw new IllegalArgumentException("No matching operation is found: " + method); - } - - // send the invocation down the wire - Object result = invoke(chain, args, wire, source); - - return result; - } - - /** - * Handle the methods on the Object.class - * @param method - * @param args - */ - protected Object invokeObjectMethod(Method method, Object[] args) throws Throwable { - String name = method.getName(); - if ("toString".equals(name)) { - return "[Proxy - " + toString() + "]"; - } else if ("equals".equals(name)) { - Object obj = args[0]; - if (obj == null) { - return false; - } - if (!Proxy.isProxyClass(obj.getClass())) { - return false; - } - return equals(Proxy.getInvocationHandler(obj)); - } else if ("hashCode".equals(name)) { - return hashCode(); - } else { - return method.invoke(this); - } - } - - /** - * Determines if the given operation matches the given method - * - * @return true if the operation matches, false if does not - */ - // FIXME: Should it be in the InterfaceContractMapper? - @SuppressWarnings("unchecked") - private static boolean match(Operation operation, Method method) { - if (operation instanceof JavaOperation) { - JavaOperation javaOp = (JavaOperation)operation; - Method m = javaOp.getJavaMethod(); - if (!method.getName().equals(m.getName())) { - return false; - } - if (method.equals(m)) { - return true; - } - } else { - if (!method.getName().equals(operation.getName())) { - return false; - } - } - - // For remotable interface, operation is not overloaded. - if (operation.getInterface().isRemotable()) { - return true; - } - - Class<?>[] params = method.getParameterTypes(); - - DataType<List<DataType>> inputType = null; - if (operation.isWrapperStyle()) { - inputType = operation.getWrapper().getUnwrappedInputType(); - } else { - inputType = operation.getInputType(); - } - List<DataType> types = inputType.getLogical(); - boolean matched = true; - if (types.size() == params.length && method.getName().equals(operation.getName())) { - for (int i = 0; i < params.length; i++) { - Class<?> clazz = params[i]; - Class<?> type = types.get(i).getPhysical(); - // Object.class.isAssignableFrom(int.class) returns false - if (type != Object.class && (!type.isAssignableFrom(clazz))) { - matched = false; - } - } - } else { - matched = false; - } - return matched; - - } - - protected synchronized InvocationChain getInvocationChain(Method method, RuntimeWire wire) { - if (fixedWire && chains.containsKey(method)) { - return chains.get(method); - } - InvocationChain found = null; - for (InvocationChain chain : wire.getInvocationChains()) { - Operation operation = chain.getSourceOperation(); - if (operation.isDynamic()) { - operation.setName(method.getName()); - found = chain; - break; - } else if (match(operation, method)) { - found = chain; - break; - } - } - if (fixedWire) { - chains.put(method, found); - } - return found; - } - - protected void setEndpoint(EndpointReference endpoint) { - this.target = endpoint; - } - - protected Object invoke(InvocationChain chain, Object[] args, RuntimeWire wire, EndpointReference source) - throws Throwable { - Message msg = messageFactory.createMessage(); - msg.setFrom(source); - if (target != null) { - msg.setTo(target); - } else { - msg.setTo(wire.getTarget()); - } - Invoker headInvoker = chain.getHeadInvoker(); - Operation operation = chain.getTargetOperation(); - msg.setOperation(operation); - msg.setBody(args); - - Message msgContext = ThreadMessageContext.getMessageContext(); - Object currentConversationID = msgContext.getFrom().getReferenceParameters().getConversationID(); - - conversationPreinvoke(msg, wire); - handleCallback(msg, wire, currentConversationID); - ThreadMessageContext.setMessageContext(msg); - boolean abnormalEndConversation = false; - try { - // dispatch the wire down the chain and get the response - Message resp = headInvoker.invoke(msg); - Object body = resp.getBody(); - if (resp.isFault()) { - // mark the conversation as ended if the exception is not a business exception - if (currentConversationID != null ){ - try { - boolean businessException = false; - - for (DataType dataType : operation.getFaultTypes()){ - if (dataType.getPhysical() == ((Throwable)body).getClass()){ - businessException = true; - break; - } - } - - if (businessException == false){ - abnormalEndConversation = true; - } - } catch (Exception ex){ - // TODO - sure what the best course of action is here. We have - // a system exception in the middle of a business exception - } - } - throw (Throwable)body; - } - return body; - } finally { - conversationPostInvoke(msg, wire, abnormalEndConversation); - ThreadMessageContext.setMessageContext(msgContext); - } - } - - /** - * @param msg - * @param wire - * @param interfaze - * @throws TargetResolutionException - */ - private void handleCallback(Message msg, RuntimeWire wire, Object currentConversationID) - throws TargetResolutionException { - ReferenceParameters parameters = msg.getFrom().getReferenceParameters(); - parameters.setCallbackID(getCallbackID()); - if (msg.getFrom() == null || msg.getFrom().getCallbackEndpoint() == null) { - return; - } - - parameters.setCallbackReference(msg.getFrom().getCallbackEndpoint()); - - // If we are passing out a callback target - // register the calling component instance against this - // new conversation id so that stateful callbacks will be - // able to find it - Object callbackObject = getCallbackObject(); - if (conversational && callbackObject == null) { - // the component instance is already registered - // so add another registration - ScopeContainer<Object> scopeContainer = getConversationalScopeContainer(wire); - - if (scopeContainer != null && currentConversationID != null) { - scopeContainer.addWrapperReference(currentConversationID, conversation.getConversationID()); - } - } - - Interface interfaze = msg.getFrom().getCallbackEndpoint().getInterfaceContract().getInterface(); - if (callbackObject != null) { - if (callbackObject instanceof ServiceReference) { - EndpointReference callbackRef = ((CallableReferenceExt<?>)callbackObject).getEndpointReference(); - parameters.setCallbackReference(callbackRef); - } else { - if (interfaze != null) { - if (!interfaze.isConversational()) { - throw new IllegalArgumentException( - "Callback object for stateless callback is not a ServiceReference"); - } else { - if (!(callbackObject instanceof Serializable)) { - throw new IllegalArgumentException( - "Callback object for stateful callback is not Serializable"); - } - ScopeContainer scopeContainer = getConversationalScopeContainer(wire); - if (scopeContainer != null) { - InstanceWrapper wrapper = new CallbackObjectWrapper(callbackObject); - scopeContainer.registerWrapper(wrapper, conversation.getConversationID()); - } - parameters.setCallbackObjectID(callbackObject); - } - } - } - } - } - - /** - * Pre-invoke for the conversation handling - * @param msg - * @throws TargetResolutionException - */ - private void conversationPreinvoke(Message msg, RuntimeWire wire) { - if (!conversational) { - // Not conversational or the conversation has been started - return; - } - - ConversationManager conversationManager = ((RuntimeWireImpl)wire).getConversationManager(); - - if (conversation == null || conversation.getState() == ConversationState.ENDED) { - - conversation = conversationManager.startConversation(getConversationID()); - - // if this is a local wire then set up the conversation timeouts here based on the - // parameters from the component - if (wire.getTarget().getComponent() != null){ - conversation.initializeConversationAttributes(wire.getTarget().getComponent()); - } - - // connect the conversation to the CallableReference so it can be retrieve in the future - if (callableReference != null) { - ((CallableReferenceImpl)callableReference).attachConversation(conversation); - } - } else if (conversation.isExpired()) { - throw new ConversationEndedException("Conversation " + conversation.getConversationID() + " has expired."); - } - - // if this is a local wire then schedule conversation timeouts based on the timeout - // parameters from the service implementation. If this isn't a local wire then - // the RuntimeWireInvoker will take care of this - if (wire.getTarget().getComponent() != null){ - conversation.updateLastReferencedTime(); - } - - msg.getFrom().getReferenceParameters().setConversationID(conversation.getConversationID()); - - } - - /** - * Post-invoke for the conversation handling - * @param wire - * @param operation - * @throws TargetDestructionException - */ - @SuppressWarnings("unchecked") - private void conversationPostInvoke(Message msg, RuntimeWire wire, boolean abnormalEndConversation) - throws TargetDestructionException { - Operation operation = msg.getOperation(); - ConversationSequence sequence = operation.getConversationSequence(); - // We check that conversation has not already ended as there is only one - // conversation manager in the runtime and so, in the case of remote bindings, - // the conversation will already have been stopped when we get back to the client - if ((sequence == ConversationSequence.CONVERSATION_END || abnormalEndConversation) && - (conversation.getState() != ConversationState.ENDED)) { - - // remove conversation id from scope container - ScopeContainer scopeContainer = getConversationalScopeContainer(wire); - - if (scopeContainer != null) { - scopeContainer.remove(conversation.getConversationID()); - } - - conversation.end(); - } - } - - private ScopeContainer<Object> getConversationalScopeContainer(RuntimeWire wire) { - ScopeContainer<Object> scopeContainer = null; - - RuntimeComponent runtimeComponent = wire.getSource().getComponent(); - - if (runtimeComponent instanceof ScopedRuntimeComponent) { - ScopedRuntimeComponent scopedRuntimeComponent = (ScopedRuntimeComponent)runtimeComponent; - ScopeContainer<Object> tmpScopeContainer = scopedRuntimeComponent.getScopeContainer(); - - if ((tmpScopeContainer != null) && (tmpScopeContainer.getScope() == Scope.CONVERSATION)) { - scopeContainer = tmpScopeContainer; - } - } - - return scopeContainer; - } - - /** - * Creates a new conversation id - * - * @return the conversation id - */ - private Object createConversationID() { - if (getConversationID() != null) { - return getConversationID(); - } else { - return UUID.randomUUID().toString(); - } - } - - /** - * @return the callableReference - */ - public CallableReference<?> getCallableReference() { - return callableReference; - } - - /** - * @param callableReference the callableReference to set - */ - public void setCallableReference(CallableReference<?> callableReference) { - this.callableReference = callableReference; - } - - /** - * Minimal wrapper for a callback object contained in a ServiceReference - */ - private static class CallbackObjectWrapper<T> implements InstanceWrapper<T> { - - private T instance; - - private CallbackObjectWrapper(T instance) { - this.instance = instance; - } - - public T getInstance() { - return instance; - } - - public void start() { - // do nothing - } - - public void stop() { - // do nothing - } - - } - -} |