net.jenet.Command.java Source code

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Here is the source code for net.jenet.Command.java

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/*
 * Copyright (c) 2005 Dizan Vasquez.
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
package net.jenet;

import java.nio.ByteBuffer;

import org.apache.commons.lang.builder.EqualsBuilder;
import org.apache.commons.lang.builder.HashCodeBuilder;
import org.apache.commons.lang.builder.ToStringBuilder;
import org.apache.commons.lang.builder.ToStringStyle;

/**
 * @author Dizan Vasquez
 */
abstract class Command implements IBufferable {

    public static final int BYTE_SIZE = Header.BYTE_SIZE;

    public static byte commandCode(Command command) {
        if (command instanceof None)
            return 0;
        else if (command instanceof Acknowledge)
            return 1;
        else if (command instanceof Connect)
            return 2;
        else if (command instanceof VerifyConnect)
            return 3;
        else if (command instanceof Disconnect)
            return 4;
        else if (command instanceof Ping)
            return 5;
        else if (command instanceof SendReliable)
            return 6;
        else if (command instanceof SendUnreliable)
            return 7;
        else if (command instanceof SendFragment)
            return 8;
        else if (command instanceof BandwidthLimit)
            return 9;
        else if (command instanceof ThrottleConfigure)
            return 10;
        else
            return 11;
    }

    public static Command readCommand(ByteBuffer buffer) {
        int position = buffer.position();
        Command command = null;

        CommandHeader header = new CommandHeader();
        header.fromBuffer(buffer);
        buffer.position(position);

        switch (header.getCommand()) {
        case 0:
            command = new None();
            break;
        case 1:
            command = new Acknowledge();
            break;
        case 2:
            command = new Connect();
            break;
        case 3:
            command = new VerifyConnect();
            break;
        case 4:
            command = new Disconnect();
            break;
        case 5:
            command = new Ping();
            break;
        case 6:
            command = new SendReliable();
            break;
        case 7:
            command = new SendUnreliable();
            break;
        case 8:
            command = new SendFragment();
            break;
        case 9:
            command = new BandwidthLimit();
            break;
        case 10:
            command = new ThrottleConfigure();
            break;
        case 11:
            command = new SendUnsequenced();
            break;

        default:
            command = null;
            return command;
        }

        command.fromBuffer(buffer);

        return command;
    }

    protected CommandHeader header = new CommandHeader();

    public Command() {
        super();
        header.setCommand(commandCode(this));
        header.setCommandLength(this.byteSize());
    }

    /*
     * (non-Javadoc)
     * 
     * @see net.jenet.IByteSize#byteSize()
     */
    public int byteSize() {
        return BYTE_SIZE;
    }

    /*
     * (non-Javadoc)
     * 
     * @see java.lang.Object#equals(java.lang.Object)
     */
    @Override
    public boolean equals(Object obj) {
        return EqualsBuilder.reflectionEquals(this, obj);
    }

    /*
     * (non-Javadoc)
     * 
     * @see net.jenet.Bufferable#fromBuffer(java.nio.ByteBuffer)
     */
    public void fromBuffer(ByteBuffer buffer) {
        header.fromBuffer(buffer);
    }

    /**
     * @return Returns the header.
     */
    public CommandHeader getHeader() {
        return header;
    }

    /*
     * (non-Javadoc)
     * 
     * @see java.lang.Object#hashCode()
     */
    @Override
    public int hashCode() {
        return HashCodeBuilder.reflectionHashCode(this);
    }

    /**
     * @param header
     *            The header to set.
     */
    public void setHeader(CommandHeader header) {
        this.header = header;
    }

    /*
     * (non-Javadoc)
     * 
     * @see net.jenet.Bufferable#toBuffer(java.nio.ByteBuffer)
     */
    public void toBuffer(ByteBuffer buffer) {
        header.toBuffer(buffer);
    }

    public String toString() {
        return ToStringBuilder.reflectionToString(this, ToStringStyle.MULTI_LINE_STYLE);
    }

    /**
     * @param peer
     */
    public abstract Event execute(Host host, Peer peer, Header header);
}