com.mobius.software.mqtt.performance.controller.net.AbstractClient.java Source code

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Here is the source code for com.mobius.software.mqtt.performance.controller.net.AbstractClient.java

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/**
 * Mobius Software LTD
 * Copyright 2015-2016, Mobius Software LTD
 *
 * 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 com.mobius.software.mqtt.performance.controller.net;

import java.net.SocketAddress;
import java.util.Iterator;
import java.util.Map.Entry;
import java.util.NoSuchElementException;
import java.util.concurrent.ConcurrentHashMap;

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

import io.netty.channel.Channel;
import io.netty.channel.ChannelFuture;

public abstract class AbstractClient implements NetworkHandler {
    protected final Log logger = LogFactory.getLog(this.getClass());

    protected ConcurrentHashMap<SocketAddress, ClientBootstrap> bootstraps = new ConcurrentHashMap<>();
    protected ConcurrentHashMap<SocketAddress, Channel> clientChannels = new ConcurrentHashMap<>();
    protected ConcurrentHashMap<SocketAddress, ConnectionListener> clientListeners = new ConcurrentHashMap<>();

    public abstract void init(SocketAddress serverAddress);

    public ChannelFuture connect(SocketAddress serverAddress) {
        ClientBootstrap bootstrap = bootstraps.get(serverAddress);
        if (bootstrap != null)
            return bootstrap.createConnection();

        return null;
    }

    public SocketAddress finishConnection(ChannelFuture future, ConnectionListener listener) {
        if (future != null) {
            Channel channel = future.channel();
            SocketAddress localAddress = channel.localAddress();
            clientListeners.put(localAddress, listener);
            clientChannels.put(localAddress, channel);
            return localAddress;
        }

        return null;
    }

    public void shutdown() throws InterruptedException {
        Iterator<Entry<SocketAddress, Channel>> iterator = clientChannels.entrySet().iterator();
        while (iterator.hasNext()) {
            try {
                iterator.next().getValue().close();
                iterator.remove();
            } catch (Exception e) {
                logger.error("An error occured while performing shutdown: client channel close failed - "
                        + e.getMessage());
            }
        }
    }

    @Override
    public void close(SocketAddress address) {
        Channel channel = clientChannels.remove(address);
        if (channel != null) {
            try {
                channel.pipeline().remove("handler");
            } catch (NoSuchElementException ex) {
            } finally {
                channel.close();
            }
        }
    }

    @Override
    public void releaseLocalPort(SocketAddress serverAddress, int localPort) {
        ClientBootstrap bootstrap = this.bootstraps.get(serverAddress);
        if (bootstrap != null)
            bootstrap.releaseLocalPort(localPort);
    }
}