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/*
 * Copyright (c) 2014, 2015 Cisco Systems, Inc. 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.nx.codec.match;

import static org.opendaylight.yangtools.yang.common.netty.ByteBufUtils.readUint64;

import io.netty.buffer.ByteBuf;
import org.opendaylight.openflowjava.protocol.api.keys.MatchEntryDeserializerKey;
import org.opendaylight.openflowjava.protocol.api.keys.MatchEntrySerializerKey;
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.oxm.rev150225.MatchField;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev150225.Nxm1Class;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev150225.OxmClassBase;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev150225.match.entries.grouping.MatchEntry;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowjava.nx.match.rev140421.NxmNxTunId;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowjava.nx.match.rev140421.ofj.aug.nx.match.TunIdCaseValue;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowjava.nx.match.rev140421.ofj.aug.nx.match.TunIdCaseValueBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowjava.nx.match.rev140421.ofj.nxm.nx.match.tun.id.grouping.TunIdValuesBuilder;

public class TunIdCodec extends AbstractMatchCodec {
    private static final int VALUE_LENGTH = 8;
    private static final int NXM_FIELD_CODE = 16;
    public static final MatchEntrySerializerKey SERIALIZER_KEY = new MatchEntrySerializerKey<>(
            EncodeConstants.OF_VERSION_1_3, Nxm1Class.VALUE, NxmNxTunId.VALUE);
    public static final MatchEntryDeserializerKey DESERIALIZER_KEY = new MatchEntryDeserializerKey(
            EncodeConstants.OF_VERSION_1_3, OxmMatchConstants.NXM_1_CLASS, NXM_FIELD_CODE);

    @Override
    public void serialize(final MatchEntry input, final ByteBuf outBuffer) {
        serializeHeader(input, outBuffer);
        outBuffer.writeLong(((TunIdCaseValue) input.getMatchEntryValue()).getTunIdValues().getValue().longValue());
    }

    @Override
    public MatchEntry deserialize(final ByteBuf message) {
        return deserializeHeaderToBuilder(message)
            .setMatchEntryValue(new TunIdCaseValueBuilder()
                .setTunIdValues(new TunIdValuesBuilder().setValue(readUint64(message)).build())
                .build())
            .build();
    }

    @Override
    public int getNxmFieldCode() {
        return NXM_FIELD_CODE;
    }

    @Override
    public int getOxmClassCode() {
        return OxmMatchConstants.NXM_1_CLASS;
    }

    @Override
    public int getValueLength() {
        return VALUE_LENGTH;
    }

    @Override
    public MatchField getNxmField() {
        return NxmNxTunId.VALUE;
    }

    @Override
    public OxmClassBase getOxmClass() {
        return Nxm1Class.VALUE;
    }
}