/* * Copyright 1999-2011 Alibaba Group. * * Licensed 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 com.alibaba.dubbo.remoting.http.servlet; import java.io.IOException; import java.util.Map; import java.util.concurrent.ConcurrentHashMap; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import com.alibaba.dubbo.remoting.http.HttpHandler; /** * Service dispatcher Servlet. * * @author qian.lei */ public class DispatcherServlet extends HttpServlet { private static final long serialVersionUID = 5766349180380479888L; private static DispatcherServlet INSTANCE; private static final Map<Integer, HttpHandler> handlers = new ConcurrentHashMap<Integer, HttpHandler>(); public static void addHttpHandler(int port, HttpHandler processor) { handlers.put(port, processor); } public static void removeHttpHandler(int port) { handlers.remove(port); } public static DispatcherServlet getInstance() { return INSTANCE; } public DispatcherServlet() { DispatcherServlet.INSTANCE = this; } protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { HttpHandler handler = handlers.get(request.getLocalPort()); if( handler == null ) {// service not found. response.sendError(HttpServletResponse.SC_NOT_FOUND, "Service not found."); } else { handler.handle(request, response); } } }