| /* |
| * 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.dubbo.remoting.http.servlet; |
| |
| import org.apache.dubbo.remoting.http.HttpHandler; |
| |
| import javax.servlet.ServletException; |
| import javax.servlet.http.HttpServlet; |
| import javax.servlet.http.HttpServletRequest; |
| import javax.servlet.http.HttpServletResponse; |
| import java.io.IOException; |
| import java.util.Map; |
| import java.util.concurrent.ConcurrentHashMap; |
| |
| /** |
| * Service dispatcher Servlet. |
| */ |
| public class DispatcherServlet extends HttpServlet { |
| |
| private static final long serialVersionUID = 5766349180380479888L; |
| private static final Map<Integer, HttpHandler> HANDLERS = new ConcurrentHashMap<>(); |
| private static DispatcherServlet INSTANCE; |
| |
| public DispatcherServlet() { |
| DispatcherServlet.INSTANCE = this; |
| } |
| |
| 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; |
| } |
| |
| @Override |
| 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); |
| } |
| } |
| } |