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/**
 * Copyright (c) 2012, University of Konstanz, Distributed Systems Group
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 * * Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 * * Neither the name of the University of Konstanz nor the
 * names of its contributors may be used to endorse or promote products
 * derived from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL  BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package org.jscsi.initiator.taskbalancer;

import java.util.concurrent.LinkedBlockingQueue;

import org.jscsi.exception.NoSuchConnectionException;
import org.jscsi.initiator.connection.Connection;

/**
 * SimpleLoadBalancer
 * 
 * This simple load balancer distribute only the work to the first connection.
 * 
 * @author Volker Wildi
 */
public final class SimpleTaskBalancer extends AbstractTaskBalancer {

    // --------------------------------------------------------------------------
    // --------------------------------------------------------------------------
    /**
     * Constructor to create a SimpleLoadBalancer instance.
     * 
     * @param initConnections
     *            The list with all opened connections.
     */
    public SimpleTaskBalancer(final LinkedBlockingQueue initConnections) {

        super(initConnections);
    }

    // --------------------------------------------------------------------------
    // --------------------------------------------------------------------------

    /** {@inheritDoc} */
    @Override
    public Connection getConnection() throws NoSuchConnectionException {

        Connection retConnection;
        try {
            retConnection = freeConnections.take();
            return retConnection;

        } catch (InterruptedException e) {
            e.printStackTrace();
            return null;
        }
    }
    // --------------------------------------------------------------------------
    // --------------------------------------------------------------------------
    // --------------------------------------------------------------------------
    // --------------------------------------------------------------------------

}