| /* |
| * 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.qos.server; |
| |
| import com.alibaba.dubbo.common.logger.Logger; |
| import com.alibaba.dubbo.common.logger.LoggerFactory; |
| import com.alibaba.dubbo.qos.server.handler.QosProcessHandler; |
| import io.netty.bootstrap.ServerBootstrap; |
| import io.netty.channel.Channel; |
| import io.netty.channel.ChannelInitializer; |
| import io.netty.channel.ChannelOption; |
| import io.netty.channel.EventLoopGroup; |
| import io.netty.channel.nio.NioEventLoopGroup; |
| import io.netty.channel.socket.nio.NioServerSocketChannel; |
| import io.netty.util.concurrent.DefaultThreadFactory; |
| |
| import java.util.concurrent.atomic.AtomicBoolean; |
| |
| /** |
| * A server serves for both telnet access and http access |
| * <ul> |
| * <li>static initialize server</li> |
| * <li>start server and bind port</li> |
| * <li>close server</li> |
| * </ul> |
| */ |
| public class Server { |
| |
| private static final Logger logger = LoggerFactory.getLogger(Server.class); |
| private static final Server INSTANCE = new Server(); |
| |
| public static final Server getInstance() { |
| return INSTANCE; |
| } |
| |
| private int port; |
| |
| private boolean acceptForeignIp = true; |
| |
| private EventLoopGroup boss; |
| |
| private EventLoopGroup worker; |
| |
| private Server() { |
| this.welcome = DubboLogo.dubbo; |
| } |
| |
| private String welcome; |
| |
| private AtomicBoolean hasStarted = new AtomicBoolean(); |
| |
| /** |
| * welcome message |
| */ |
| public void setWelcome(String welcome) { |
| this.welcome = welcome; |
| } |
| |
| public int getPort() { |
| return port; |
| } |
| |
| /** |
| * start server, bind port |
| */ |
| public void start() throws Throwable { |
| if (!hasStarted.compareAndSet(false, true)) { |
| return; |
| } |
| boss = new NioEventLoopGroup(0, new DefaultThreadFactory("qos-boss", true)); |
| worker = new NioEventLoopGroup(0, new DefaultThreadFactory("qos-worker", true)); |
| ServerBootstrap serverBootstrap = new ServerBootstrap(); |
| serverBootstrap.group(boss, worker); |
| serverBootstrap.channel(NioServerSocketChannel.class); |
| serverBootstrap.childOption(ChannelOption.TCP_NODELAY, true); |
| serverBootstrap.childOption(ChannelOption.SO_REUSEADDR, true); |
| serverBootstrap.childHandler(new ChannelInitializer<Channel>() { |
| |
| @Override |
| protected void initChannel(Channel ch) throws Exception { |
| ch.pipeline().addLast(new QosProcessHandler(welcome, acceptForeignIp)); |
| } |
| }); |
| try { |
| serverBootstrap.bind(port).sync(); |
| logger.info("qos-server bind localhost:" + port); |
| } catch (Throwable throwable) { |
| logger.error("qos-server can not bind localhost:" + port, throwable); |
| throw throwable; |
| } |
| } |
| |
| /** |
| * close server |
| */ |
| public void stop() { |
| logger.info("qos-server stopped."); |
| if (boss != null) { |
| boss.shutdownGracefully(); |
| } |
| if (worker != null) { |
| worker.shutdownGracefully(); |
| } |
| } |
| |
| public void setPort(int port) { |
| this.port = port; |
| } |
| |
| public boolean isAcceptForeignIp() { |
| return acceptForeignIp; |
| } |
| |
| public void setAcceptForeignIp(boolean acceptForeignIp) { |
| this.acceptForeignIp = acceptForeignIp; |
| } |
| |
| public String getWelcome() { |
| return welcome; |
| } |
| } |