object.server.ObjectServer.java Source code

Introduction

Here is the source code for object.server.ObjectServer.java

Source

package object.server;

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
import interfaces.ConnectionFeedBack;
import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelPipeline;
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.compression.ZlibCodecFactory;
import io.netty.handler.codec.compression.ZlibWrapper;
import io.netty.handler.codec.serialization.ClassResolvers;
import io.netty.handler.codec.serialization.ObjectDecoder;
import io.netty.handler.codec.serialization.ObjectEncoder;
import io.netty.handler.logging.LogLevel;
import io.netty.handler.logging.LoggingHandler;
import io.netty.handler.ssl.SslContext;
import io.netty.handler.ssl.SslContextBuilder;
import io.netty.handler.ssl.util.SelfSignedCertificate;
import java.net.BindException;
import java.security.cert.CertificateException;
import javax.net.ssl.SSLException;

//import org.slf4j.LoggerFactory;
/**
 *
 * @author Tareq
 */
public class ObjectServer {
    //private static final org.slf4j.Logger ddsLogger = LoggerFactory.getLogger("dds");

    private final int PORT;
    private static final boolean SSL = System.getProperty("ssl") != null;
    private final ClassLoader classLoader;
    private EventLoopGroup bossGroup;
    private EventLoopGroup workerGroup;
    private ServerBootstrap server;

    public ObjectServer(int PORT, ClassLoader classLoader) {
        this.PORT = PORT;
        this.classLoader = classLoader;

    }

    public void run(final ConnectionFeedBack connectionFeedBack)
            throws CertificateException, SSLException, InterruptedException, BindException {
        final SslContext sslCtx;
        if (SSL) {
            SelfSignedCertificate ssc = new SelfSignedCertificate();
            sslCtx = SslContextBuilder.forServer(ssc.certificate(), ssc.privateKey()).build();
        } else {
            sslCtx = null;
        }
        bossGroup = new NioEventLoopGroup(1);
        workerGroup = new NioEventLoopGroup();
        try {
            server = new ServerBootstrap();
            server.group(bossGroup, workerGroup).channel(NioServerSocketChannel.class)
                    .handler(new LoggingHandler(LogLevel.INFO))
                    .childHandler(new ChannelInitializer<SocketChannel>() {
                        @Override
                        public void initChannel(SocketChannel ch) throws Exception {
                            ChannelPipeline p = ch.pipeline();
                            p.addLast("deflater", ZlibCodecFactory.newZlibEncoder(ZlibWrapper.GZIP));
                            p.addLast("inflater", ZlibCodecFactory.newZlibDecoder(ZlibWrapper.GZIP));
                            if (sslCtx != null) {
                                p.addLast(sslCtx.newHandler(ch.alloc()));
                            }
                            p.addLast(new ObjectEncoder(),
                                    new ObjectDecoder(ClassResolvers.cacheDisabled(classLoader)),
                                    new ObjectServerHandler(connectionFeedBack));
                        }
                    });

            // Bind and start to accept incoming connections.
            System.out.println("[ObjectServer]\t " + "Server listen to port " + PORT);
            server.bind(PORT).sync().channel().closeFuture().sync();
        } catch (InterruptedException ex) {
            throw new RuntimeException("bind failed..");
        } finally {
            bossGroup.shutdownGracefully();
            workerGroup.shutdownGracefully();
        }

    }

    public void stop() {
        bossGroup.shutdownGracefully();
        workerGroup.shutdownGracefully();
    }
}