/*
 * 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.deserialization.match;

import io.netty.buffer.ByteBuf;

import org.opendaylight.openflowjava.protocol.api.extensibility.OFDeserializer;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.MplsLabelMatchEntry;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.MplsLabelMatchEntryBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.MatchField;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.MplsLabel;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.OpenflowBasicClass;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.OxmClassBase;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.oxm.fields.grouping.MatchEntries;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.oxm.fields.grouping.MatchEntriesBuilder;

/**
 * @author michal.polkorab
 *
 */
public class OxmMplsLabelDeserializer extends AbstractOxmMatchEntryDeserializer
implements OFDeserializer<MatchEntries> {

    @Override
    public MatchEntries deserialize(ByteBuf input) {
        MatchEntriesBuilder builder = processHeader(getOxmClass(), getOxmField(), input);
        addMplsLabelAugmentation(input, builder);
        return builder.build();
    }

    private static void addMplsLabelAugmentation(ByteBuf input,
            MatchEntriesBuilder builder) {
        MplsLabelMatchEntryBuilder mplsLabelBuilder = new MplsLabelMatchEntryBuilder();
        mplsLabelBuilder.setMplsLabel(input.readUnsignedInt());
        builder.addAugmentation(MplsLabelMatchEntry.class, mplsLabelBuilder.build());
    }

    @Override
    protected Class<? extends MatchField> getOxmField() {
        return MplsLabel.class;
    }

    @Override
    protected Class<? extends OxmClassBase> getOxmClass() {
        return OpenflowBasicClass.class;
    }
}