org.jboss.errai.bus.server.io.websockets.WebSocketServer.java Source code

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Here is the source code for org.jboss.errai.bus.server.io.websockets.WebSocketServer.java

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/*
 * Copyright 2012 JBoss, by Red Hat, Inc
 *
 * 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 org.jboss.errai.bus.server.io.websockets;

import static org.slf4j.LoggerFactory.getLogger;
import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.Channel;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import io.netty.handler.codec.http.HttpObjectAggregator;
import io.netty.handler.codec.http.HttpServerCodec;
import io.netty.handler.ssl.SslHandler;

import org.jboss.errai.bus.server.io.websockets.ssl.SslHandlerFactory;
import org.jboss.errai.bus.server.service.ErraiConfigAttribs;
import org.jboss.errai.bus.server.service.ErraiService;
import org.jboss.errai.bus.server.service.ErraiServiceConfigurator;
import org.slf4j.Logger;

/**
 * @author Mike Brock
 * @author Christian Sadilek <csadilek@redhat.com>
 */
public class WebSocketServer {
    private ErraiService svc;
    private Logger log = getLogger(getClass());
    private boolean useSecureWebSocket = false;

    public WebSocketServer(ErraiService svc) {
        this.svc = svc;
    }

    public void start() {
        final ErraiServiceConfigurator esc = svc.getConfiguration();
        useSecureWebSocket = ErraiConfigAttribs.SECURE_WEB_SOCKET_SERVER.getBoolean(esc);
        final int port = ErraiConfigAttribs.WEB_SOCKET_PORT.getInt(esc);
        final ServerBootstrap bootstrap = new ServerBootstrap();
        final WebSocketServerHandler webSocketHandler = new WebSocketServerHandler(svc);

        try {
            final NioEventLoopGroup bossGroup = new NioEventLoopGroup();
            final NioEventLoopGroup workerGroup = new NioEventLoopGroup();
            final ChannelFuture channelFuture = bootstrap.group(bossGroup, workerGroup)
                    .channel(NioServerSocketChannel.class).childHandler(new ChannelInitializer() {
                        @Override
                        protected void initChannel(Channel ch) throws Exception {
                            if (useSecureWebSocket) {
                                final SslHandler sslHandler = SslHandlerFactory.buildSslHandler(esc);
                                ch.pipeline().addLast("ssl", sslHandler);
                            }
                            ch.pipeline().addLast("codec-http", new HttpServerCodec());
                            ch.pipeline().addLast("aggregator", new HttpObjectAggregator(65536));
                            ch.pipeline().addLast("handler", webSocketHandler);
                        }

                    }).bind(port).sync();

            svc.addShutdownHook(new Runnable() {
                @Override
                public void run() {
                    try {
                        webSocketHandler.stop();
                        channelFuture.channel().close();
                        log.info("web socket server stopped.");
                    } catch (Exception e) {
                        throw new RuntimeException(e);
                    } finally {
                        bossGroup.shutdownGracefully();
                        workerGroup.shutdownGracefully();
                    }
                }
            });

        } catch (Throwable t) {
            throw new RuntimeException(t);
        }
        log.info("started web socket server on port: " + port);
    }
}