server.operation.OperationServer.java Source code

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Here is the source code for server.operation.OperationServer.java

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/*
 * Copyright 2012 The Netty Project
 *
 * The Netty Project 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 server.operation;

import java.io.File;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationEventPublisher;
import org.springframework.stereotype.Service;
import org.springframework.util.ResourceUtils;
import org.springframework.web.context.WebApplicationContext;

import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelOption;
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.logging.LogLevel;
import io.netty.handler.logging.LoggingHandler;
import io.netty.handler.ssl.SslContext;
import io.netty.handler.ssl.SslContextBuilder;
import io.netty.handler.stream.ChunkedWriteHandler;

/**
 * Server that accept the path of a file an echo back its content.
 */
@Service
public final class OperationServer {

    // ? -Dssl ?  ??. 
    //? -Dssl=true, -Dssl=false  ? ? ?  -Dssl  ? true ?.
    //, -Dssl=false? ? true ??)
    static final boolean SSL = System.getProperty("ssl") != null;
    // Use the same default port with the telnet example so that we can use the
    // telnet client example to access it.
    static final int PORT = Integer.parseInt(System.getProperty("port", SSL ? "6443" : "6000"));

    @Autowired
    WebApplicationContext applicationContext;

    @Autowired
    ApplicationEventPublisher eventPublisher;

    public void start() throws Exception {
        // Configure SSL.
        final SslContext sslCtx;
        if (SSL) {
            // ??   ?  ?? ? ?.
            //?, ??  ? .
            //jvm  ?? ?. (netty api )
            //SelfSignedCertificate ssc = new SelfSignedCertificate();
            //sslCtx = SslContextBuilder.forServer(ssc.certificate(), ssc.privateKey()).build();

            //File cert = new File("./resource/cert/nene.crt");
            //File privateKey= new File("./resource/cert/privatekey.pem");

            //resources/cert ? ?? ? ?? .
            //? pkcs#8? .
            final File cert = ResourceUtils.getFile("classpath:/cert/nene.crt");
            final File privateKey = ResourceUtils.getFile("classpath:/cert/nene.pem");
            sslCtx = SslContextBuilder.forServer(cert, privateKey, "tkfkdgo123!").build();
            System.out.println("ssl? ??. : " + SSL + ", port : " + PORT);

        } else {
            sslCtx = null;
        }

        // Configure the server.
        EventLoopGroup bossGroup = new NioEventLoopGroup(1);
        EventLoopGroup workerGroup = new NioEventLoopGroup();
        try {
            ServerBootstrap b = new ServerBootstrap();
            b.group(bossGroup, workerGroup).channel(NioServerSocketChannel.class)
                    .option(ChannelOption.SO_BACKLOG, 100).handler(new LoggingHandler(LogLevel.DEBUG))
                    .childHandler(new ChannelInitializer<SocketChannel>() {
                        @Override
                        public void initChannel(SocketChannel ch) throws Exception {
                            ChannelPipeline p = ch.pipeline();
                            if (sslCtx != null) {
                                p.addLast(sslCtx.newHandler(ch.alloc()));
                            }
                            p.addLast(new LoggingHandler(LogLevel.DEBUG),
                                    //new StringEncoder(CharsetUtil.UTF_8),
                                    //new LineBasedFrameDecoder(8192),
                                    //new StringDecoder(CharsetUtil.UTF_8),
                                    new ChunkedWriteHandler(),
                                    new OperationServerHandler(applicationContext, eventPublisher));
                        }
                    });

            // Start the server.
            ChannelFuture f = b.bind(PORT).sync();

            // Wait until the server socket is closed.
            //f.channel().closeFuture().sync();
        } finally {
            // Shut down all event loops to terminate all threads.
            //bossGroup.shutdownGracefully();
            //workerGroup.shutdownGracefully();
        }
    }
}