| /** |
| * 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.restlet; |
| |
| import java.util.Map; |
| import java.util.concurrent.ConcurrentHashMap; |
| import java.util.concurrent.atomic.AtomicBoolean; |
| |
| import org.restlet.Request; |
| import org.restlet.Response; |
| import org.restlet.Restlet; |
| import org.restlet.data.Method; |
| import org.restlet.data.Status; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * A simple router that routes requests to target Restlets based on method. |
| * |
| * @version |
| */ |
| class MethodBasedRouter extends Restlet { |
| private static final Logger LOG = LoggerFactory.getLogger(MethodBasedRouter.class); |
| private String uriPattern; |
| |
| private Map<Method, Restlet> routes = new ConcurrentHashMap<Method, Restlet>(); |
| private AtomicBoolean hasBeenAttachedFlag = new AtomicBoolean(false); |
| |
| MethodBasedRouter(String uriPattern) { |
| this.uriPattern = uriPattern; |
| } |
| |
| @Override |
| public void handle(Request request, Response response) { |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("MethodRouter (" + uriPattern + ") received request method: " |
| + request.getMethod()); |
| } |
| |
| Restlet target = routes.get(request.getMethod()); |
| if (target != null) { |
| target.handle(request, response); |
| } else { |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("No route for request method: " + request.getMethod()); |
| } |
| response.setStatus(Status.CLIENT_ERROR_NOT_FOUND); |
| } |
| } |
| |
| void addRoute(Method method, Restlet target) { |
| routes.put(method, target); |
| } |
| |
| void removeRoute(Method method) { |
| routes.remove(method); |
| } |
| |
| /** |
| * This method does "test-and-set" on the underlying flag that indicates |
| * whether this router restlet has been attached to a server or not. It |
| * is the caller's responsibility to perform the "attach" when this method |
| * returns false. |
| * |
| * @return true only this method is called the first time. |
| */ |
| boolean hasBeenAttached() { |
| return hasBeenAttachedFlag.getAndSet(true); |
| } |
| |
| String getUriPattern() { |
| return uriPattern; |
| } |
| } |