/* | |
* 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 com.alibaba.dubbo.remoting.http.servlet; | |
import com.alibaba.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<Integer, HttpHandler>(); | |
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); | |
} | |
} | |
} |