MetadataEntryDeserializer.java example

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openflowplugin-master
/*
 * Copyright (c) 2016 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.openflowplugin.impl.protocol.deserialization.match;

import io.netty.buffer.ByteBuf;
import java.math.BigInteger;
import java.util.Objects;
import org.opendaylight.openflowjava.protocol.api.util.EncodeConstants;
import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.flow.MatchBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.model.match.types.rev131026.match.Metadata;
import org.opendaylight.yang.gen.v1.urn.opendaylight.model.match.types.rev131026.match.MetadataBuilder;

public class MetadataEntryDeserializer extends AbstractMatchEntryDeserializer {

    @Override
    public void deserializeEntry(ByteBuf message, MatchBuilder builder) {
        final boolean hasMask = processHeader(message);
        final Metadata metadata = builder.getMetadata();
        final byte[] metaByte = new byte[EncodeConstants.SIZE_OF_LONG_IN_BYTES];
        message.readBytes(metaByte);
        final MetadataBuilder metadataBuilder = new MetadataBuilder()
                .setMetadata(new BigInteger(1, metaByte));

        if (hasMask) {
            final byte[] metaMask = new byte[EncodeConstants.SIZE_OF_LONG_IN_BYTES];
            message.readBytes(metaMask);
            metadataBuilder.setMetadataMask(new BigInteger(1, metaMask));
        }

        if (Objects.isNull(metadata)) {
            builder.setMetadata(metadataBuilder.build());
        } else {
            throwErrorOnMalformed(builder, "metadata");
        }
    }

}