/*
 * Copyright (c) 2017 Red Hat, 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 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.Nxm0Class;
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.openflow.oxm.rev150225.match.entries.grouping.MatchEntryBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowjava.nx.match.rev140421.NxmOfMetadata;

public class MetadataCodec extends AbstractMatchCodec {
    private static final int VALUE_LENGTH = 8;
    private static final int NXM_FIELD_CODE = 2;

    public static final MatchEntrySerializerKey<Nxm0Class, NxmOfMetadata> SERIALIZER_KEY =
            new MatchEntrySerializerKey<>(EncodeConstants.OF_VERSION_1_3, Nxm0Class.class, NxmOfMetadata.class);

    public static final MatchEntryDeserializerKey DESERIALIZER_KEY = new MatchEntryDeserializerKey(
            EncodeConstants.OF_VERSION_1_3, OxmMatchConstants.NXM_0_CLASS, NXM_FIELD_CODE);

    @Override
    public void serialize(final MatchEntry input, final ByteBuf outBuffer) {
        serializeHeader(input, outBuffer);
    }

    @Override
    public MatchEntry deserialize(final ByteBuf message) {
        MatchEntryBuilder matchEntryBuilder = deserializeHeaderToBuilder(message);
        return matchEntryBuilder.build();
    }

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

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

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

    @Override
    public Class<? extends MatchField> getNxmField() {
        return NxmOfMetadata.class;
    }

    @Override
    public Class<? extends OxmClassBase> getOxmClass() {
        return Nxm0Class.class;
    }
}