SerialMacGen.java

/* 
 * Copyright 2016 christopher.metter.
 *
 * 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 de.uniwuerzburg.info3.ofcprobe.vswitch.trafficgen.macgen;

import de.uniwuerzburg.info3.ofcprobe.util.Util;

/**
 * @author Christopher Metter(christopher.metter@informatik.uni-wuerzburg.de)
 *
 */
public class SerialMacGen implements IMacGen {

    private long lastMAC = 0xeeeeeeeeeeeeL;
    /**
     * The GeneratorType
     */
    private MACGeneratorType type;
    private static final int MACAddress_WIDTH = 6;

    public SerialMacGen() {
        this.type = MACGeneratorType.SERIAL;
    }

    /* (non-Javadoc)
     * @see ofcprobe.vswitch.trafficgen.macgen.IMacGen#getMac()
     */
    @Override
    public byte[] getMac() {
        if (this.lastMAC == 0x000000000000L) {
            this.lastMAC = 0xeeeeeeeeeeeeL;
        }
        byte[] output = new byte[6];
        Util.insertLong(output, this.lastMAC--, 0, MACAddress_WIDTH);

        return output;
    }

    @Override
    public MACGeneratorType getType() {
        return this.type;
    }

}