code.google.nfs.rpc.netty4.server.Netty4Server.java Source code

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Here is the source code for code.google.nfs.rpc.netty4.server.Netty4Server.java

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package code.google.nfs.rpc.netty4.server;

/**
 * nfs-rpc
 *   Apache License
 *   
 *   http://code.google.com/p/nfs-rpc (c) 2011
 */
import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelOption;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import io.netty.util.concurrent.DefaultEventExecutorGroup;
import io.netty.util.concurrent.EventExecutorGroup;

import java.util.concurrent.ExecutorService;
import java.util.concurrent.atomic.AtomicBoolean;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import code.google.nfs.rpc.ProtocolFactory;
import code.google.nfs.rpc.netty4.serialize.Netty4ProtocolDecoder;
import code.google.nfs.rpc.netty4.serialize.Netty4ProtocolEncoder;
import code.google.nfs.rpc.server.Server;

/**
 * Netty4 Server
 * 
 * @author <a href="mailto:coderplay@gmail.com">Min Zhou</a>
 */
public class Netty4Server implements Server {

    private static final Log LOGGER = LogFactory.getLog(Netty4Server.class);
    private AtomicBoolean startFlag = new AtomicBoolean(false);

    private NioEventLoopGroup bossGroup;
    private NioEventLoopGroup ioGroup;
    private EventExecutorGroup businessGroup;
    private final int businessThreads;

    public Netty4Server(int businessThreads) {
        this.businessThreads = businessThreads;
    }

    public void start(int listenPort, final ExecutorService ignore) throws Exception {
        if (!startFlag.compareAndSet(false, true)) {
            return;
        }
        bossGroup = new NioEventLoopGroup();
        ioGroup = new NioEventLoopGroup();
        businessGroup = new DefaultEventExecutorGroup(businessThreads);

        ServerBootstrap b = new ServerBootstrap();
        b.group(bossGroup, ioGroup).channel(NioServerSocketChannel.class)
                .childOption(ChannelOption.TCP_NODELAY,
                        Boolean.parseBoolean(System.getProperty("nfs.rpc.tcp.nodelay", "true")))
                .childOption(ChannelOption.SO_REUSEADDR,
                        Boolean.parseBoolean(System.getProperty("nfs.rpc.tcp.reuseaddress", "true")))
                .childHandler(new ChannelInitializer<SocketChannel>() {
                    @Override
                    public void initChannel(SocketChannel ch) throws Exception {
                        ch.pipeline().addLast("decoder", new Netty4ProtocolDecoder());
                        ch.pipeline().addLast("encoder", new Netty4ProtocolEncoder());
                        ch.pipeline().addLast(businessGroup, "handler", new Netty4ServerHandler());
                    }
                });

        b.bind(listenPort).sync();
        LOGGER.warn("Server started,listen at: " + listenPort + ", businessThreads is " + businessThreads);
    }

    public void registerProcessor(int protocolType, String serviceName, Object serviceInstance) {
        ProtocolFactory.getServerHandler(protocolType).registerProcessor(serviceName, serviceInstance);
    }

    public void stop() throws Exception {
        LOGGER.warn("Server stop!");
        bossGroup.shutdownGracefully();
        ioGroup.shutdownGracefully();
        businessGroup.shutdownGracefully();
        startFlag.set(false);
    }

}