Package org.jboss.netty.channel.socket.oio

Source Code of org.jboss.netty.channel.socket.oio.OioClientSocketPipelineSink

/*
* JBoss, Home of Professional Open Source
*
* Copyright 2008, Red Hat Middleware LLC, and individual contributors
* by the @author tags. See the COPYRIGHT.txt in the distribution for a
* full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.netty.channel.socket.oio;

import static org.jboss.netty.channel.Channels.*;

import java.io.PushbackInputStream;
import java.net.SocketAddress;
import java.util.concurrent.Executor;

import org.jboss.netty.channel.AbstractChannelSink;
import org.jboss.netty.channel.ChannelEvent;
import org.jboss.netty.channel.ChannelFuture;
import org.jboss.netty.channel.ChannelFutureListener;
import org.jboss.netty.channel.ChannelPipeline;
import org.jboss.netty.channel.ChannelState;
import org.jboss.netty.channel.ChannelStateEvent;
import org.jboss.netty.channel.MessageEvent;
import org.jboss.netty.util.ThreadRenamingRunnable;

/**
*
* @author The Netty Project (netty-dev@lists.jboss.org)
* @author Trustin Lee (tlee@redhat.com)
*
* @version $Rev: 988 $, $Date: 2009-03-04 23:30:47 +0900 (Wed, 04 Mar 2009) $
*
*/
class OioClientSocketPipelineSink extends AbstractChannelSink {

    private final Executor workerExecutor;

    OioClientSocketPipelineSink(Executor workerExecutor) {
        this.workerExecutor = workerExecutor;
    }

    public void eventSunk(
            ChannelPipeline pipeline, ChannelEvent e) throws Exception {
        OioClientSocketChannel channel = (OioClientSocketChannel) e.getChannel();
        ChannelFuture future = e.getFuture();
        if (e instanceof ChannelStateEvent) {
            ChannelStateEvent stateEvent = (ChannelStateEvent) e;
            ChannelState state = stateEvent.getState();
            Object value = stateEvent.getValue();
            switch (state) {
            case OPEN:
                if (Boolean.FALSE.equals(value)) {
                    OioWorker.close(channel, future);
                }
                break;
            case BOUND:
                if (value != null) {
                    bind(channel, future, (SocketAddress) value);
                } else {
                    OioWorker.close(channel, future);
                }
                break;
            case CONNECTED:
                if (value != null) {
                    connect(channel, future, (SocketAddress) value);
                } else {
                    OioWorker.close(channel, future);
                }
                break;
            case INTEREST_OPS:
                OioWorker.setInterestOps(channel, future, ((Integer) value).intValue());
                break;
            }
        } else if (e instanceof MessageEvent) {
            OioWorker.write(
                    channel, future,
                    ((MessageEvent) e).getMessage());
        }
    }

    private void bind(
            OioClientSocketChannel channel, ChannelFuture future,
            SocketAddress localAddress) {
        try {
            channel.socket.bind(localAddress);
            future.setSuccess();
            fireChannelBound(channel, channel.getLocalAddress());
        } catch (Throwable t) {
            future.setFailure(t);
            fireExceptionCaught(channel, t);
        }
    }

    private void connect(
            OioClientSocketChannel channel, ChannelFuture future,
            SocketAddress remoteAddress) {

        boolean bound = channel.isBound();
        boolean connected = false;
        boolean workerStarted = false;

        future.addListener(ChannelFutureListener.CLOSE_ON_FAILURE);

        try {
            channel.socket.connect(
                    remoteAddress, channel.getConfig().getConnectTimeoutMillis());
            connected = true;

            // Obtain I/O stream.
            channel.in = new PushbackInputStream(channel.socket.getInputStream(), 1);
            channel.out = channel.socket.getOutputStream();

            // Fire events.
            future.setSuccess();
            if (!bound) {
                fireChannelBound(channel, channel.getLocalAddress());
            }
            fireChannelConnected(channel, channel.getRemoteAddress());

            // Start the business.
            workerExecutor.execute(new ThreadRenamingRunnable(
                    new OioWorker(channel),
                    "Old I/O client worker (channelId: " + channel.getId() + ", " +
                    channel.getLocalAddress() + " => " +
                    channel.getRemoteAddress() + ')'));

            workerStarted = true;
        } catch (Throwable t) {
            future.setFailure(t);
            fireExceptionCaught(channel, t);
        } finally {
            if (connected && !workerStarted) {
                OioWorker.close(channel, future);
            }
        }
    }
}
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