/*
 * Copyright (c) 2013 Pantheon Technologies s.r.o. and others.  All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
 * and is available at http://www.eclipse.org/legal/epl-v10.html
 */
package org.opendaylight.openflowjava.protocol.impl.serialization.match;

import io.netty.buffer.ByteBuf;

import org.opendaylight.openflowjava.protocol.api.util.EncodeConstants;
import org.opendaylight.openflowjava.protocol.api.util.OxmMatchConstants;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.VlanVidMatchEntry;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.oxm.fields.grouping.MatchEntries;

/**
 * @author michal.polkorab
 *
 */
public class OxmVlanVidSerializer extends AbstractOxmMatchEntrySerializer {

    @Override
    public void serialize(MatchEntries entry, ByteBuf outBuffer) {
        super.serialize(entry, outBuffer);
        VlanVidMatchEntry vlanVid = entry.getAugmentation(VlanVidMatchEntry.class);
        int vlanVidValue = vlanVid.getVlanVid();
        if (vlanVid.isCfiBit()) {
            short cfi = 1 << 12; // 13-th bit
            vlanVidValue = vlanVidValue | cfi;
        }

        outBuffer.writeShort(vlanVidValue);
        writeMask(entry, outBuffer, getValueLength());
    }

    @Override
    protected int getOxmClassCode() {
        return OxmMatchConstants.OPENFLOW_BASIC_CLASS;
    }

    @Override
    protected int getOxmFieldCode() {
        return OxmMatchConstants.VLAN_VID;
    }

    @Override
    protected int getValueLength() {
        return EncodeConstants.SIZE_OF_SHORT_IN_BYTES;
    }

}