| /** |
| * 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.camel.component.gae.bind; |
| |
| import java.lang.reflect.InvocationHandler; |
| import java.lang.reflect.Method; |
| |
| import org.apache.camel.Endpoint; |
| import org.apache.camel.Exchange; |
| import org.apache.camel.component.http.HttpBinding; |
| import org.apache.camel.component.http.HttpMessage; |
| |
| /** |
| * Post-processes {@link HttpBinding} invocations by delegating to an |
| * endpoint's {@link InboundBinding}. |
| */ |
| public class HttpBindingInvocationHandler<E extends Endpoint, S, T> implements InvocationHandler { |
| |
| private E endpoint; |
| private HttpBinding httpBinding; |
| private InboundBinding<E, S, T> inboundBinding; |
| |
| public HttpBindingInvocationHandler(E endpoint, HttpBinding httpBinding, InboundBinding<E, S, T> inboundBinding) { |
| this.endpoint = endpoint; |
| this.httpBinding = httpBinding; |
| this.inboundBinding = inboundBinding; |
| } |
| |
| @SuppressWarnings("unchecked") |
| public Object invoke(Object proxy, Method method, Object[] args) throws Throwable { |
| Object result = method.invoke(httpBinding, args); // updates args |
| if (method.getName().equals("readRequest") && (args.length == 2)) { |
| HttpMessage message = (HttpMessage)args[1]; |
| // prepare exchange for further inbound binding operations |
| message.getExchange().setIn(message); |
| // delegate further request binding operations to inbound binding |
| inboundBinding.readRequest(endpoint, message.getExchange(), (S)args[0]); |
| } else if (method.getName().equals("writeResponse") && (args.length == 2)) { |
| // delegate further response binding operations to inbound binding |
| inboundBinding.writeResponse(endpoint, (Exchange)args[0], (T)args[1]); |
| } |
| return result; |
| } |
| |
| } |