com.baidu.jprotobuf.pbrpc.management.HttpServer Maven / Gradle / Ivy

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/*
 * Copyright 2002-2014 the original author or authors.
 *
 * 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.baidu.jprotobuf.pbrpc.management;

import java.util.concurrent.atomic.AtomicBoolean;
import java.util.logging.Level;
import java.util.logging.Logger;

import com.baidu.jprotobuf.pbrpc.transport.RpcServer;

import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.Channel;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelFutureListener;
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.SocketChannel;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import io.netty.handler.codec.http.HttpRequestDecoder;
import io.netty.handler.codec.http.HttpResponseEncoder;

/**
 * HTTP server controller
 *
 * @author xiemalin
 * @since 3.1.0
 */
public class HttpServer {
    
    private static final Logger LOG = Logger.getLogger(HttpServer.class.getName());

    private ServerBootstrap serverBootstrap;

    private static final int DEFAULT_WAIT_STOP_INTERVAL = 200;

    private EventLoopGroup bossGroup;
    private EventLoopGroup workerGroup;
    private Channel channel;

    private AtomicBoolean stop = new AtomicBoolean(false);

    private RpcServer rpcServer;

    /**
     * 
     */
    public HttpServer(RpcServer rpcServer) {
        this.rpcServer = rpcServer;
        bossGroup = new NioEventLoopGroup();
        workerGroup = new NioEventLoopGroup();
    }

    public void start(int port) {

        serverBootstrap = new ServerBootstrap();
        serverBootstrap.group(bossGroup, workerGroup).channel(NioServerSocketChannel.class)
                .childHandler(new ChannelInitializer() {
                    @Override
                    public void initChannel(SocketChannel ch) throws Exception {
                        // server端发送的是httpResponse，所以要使用HttpResponseEncoder进行编码
                        ch.pipeline().addLast(new HttpResponseEncoder());
                        // server端接收到的是httpRequest，所以要使用HttpRequestDecoder进行解码
                        ch.pipeline().addLast(new HttpRequestDecoder());
                        ch.pipeline().addLast(new HttpServerInboundHandler(rpcServer));
                    }
                }).option(ChannelOption.SO_BACKLOG, 128).childOption(ChannelOption.SO_KEEPALIVE, true);

        serverBootstrap.bind(port).addListener(new ChannelFutureListener() {

            public void operationComplete(ChannelFuture future) throws Exception {
                if (future.isSuccess()) {
                    channel = future.channel();
                    // TODO notifyStarted();
                } else {
                    // TODO notifyFailed(future.cause());
                }
            }
        });

        LOG.log(Level.INFO, "Http starting at port: " + port);
    }

    public void waitForStop() throws InterruptedException {
        while (!stop.get()) {
            Thread.sleep(DEFAULT_WAIT_STOP_INTERVAL);
        }
        stop();
    }

    public void stop() {
        stop.compareAndSet(false, true);
    }

    public void shutdownNow() {
        if (channel != null && channel.isOpen()) {
            channel.close();
        }

        bossGroup.shutdownGracefully();
        workerGroup.shutdownGracefully();
    }

}