/*
* 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 java.util.Objects;
import org.opendaylight.openflowjava.protocol.api.util.EncodeConstants;
import org.opendaylight.openflowjava.protocol.impl.deserialization.match.OxmDeserializerHelper;
import org.opendaylight.openflowjava.util.ByteBufUtils;
import org.opendaylight.openflowplugin.openflow.md.core.sal.convertor.common.IpConversionUtil;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv6Address;
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.layer._3.match.Ipv6Match;
import org.opendaylight.yang.gen.v1.urn.opendaylight.model.match.types.rev131026.match.layer._3.match.Ipv6MatchArbitraryBitMask;
import org.opendaylight.yang.gen.v1.urn.opendaylight.model.match.types.rev131026.match.layer._3.match.Ipv6MatchArbitraryBitMaskBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.model.match.types.rev131026.match.layer._3.match.Ipv6MatchBuilder;
import io.netty.buffer.ByteBuf;
public class Ipv6DestinationEntryDeserializer extends AbstractMatchEntryDeserializer {
@Override
public void deserializeEntry(ByteBuf message, MatchBuilder builder) {
final boolean hasMask = processHeader(message);
final Ipv6Address address = ByteBufUtils.readIetfIpv6Address(message);
if (hasMask) {
final byte[] mask = OxmDeserializerHelper.convertMask(message, EncodeConstants.SIZE_OF_IPV6_ADDRESS_IN_BYTES);
if (IpConversionUtil.isIpv6ArbitraryBitMask(mask)) {
setArbitraryMatch(builder, address, mask);
} else {
setPrefixMatch(builder, address, mask);
}
} else {
setPrefixMatch(builder, address, null);
}
}
private static void setPrefixMatch(final MatchBuilder builder, final Ipv6Address address, final byte[] mask) {
if (Objects.isNull(builder.getLayer3Match())) {
builder.setLayer3Match(new Ipv6MatchBuilder()
.setIpv6Destination(IpConversionUtil.createPrefix(address, mask))
.build());
} else if (Ipv6Match.class.isInstance(builder.getLayer3Match())
&& Objects.isNull(Ipv6Match.class.cast(builder.getLayer3Match()).getIpv6Destination())) {
builder.setLayer3Match(new Ipv6MatchBuilder(Ipv6Match.class.cast(builder.getLayer3Match()))
.setIpv6Destination(IpConversionUtil.createPrefix(address, mask))
.build());
} else {
throwErrorOnMalformed(builder, "layer3Match", "ipv6Destination");
}
}
private static void setArbitraryMatch(final MatchBuilder builder, final Ipv6Address address,
final byte[] mask) {
if (Objects.isNull(builder.getLayer3Match())) {
builder.setLayer3Match(new Ipv6MatchArbitraryBitMaskBuilder()
.setIpv6DestinationAddressNoMask(address)
.setIpv6DestinationArbitraryBitmask(IpConversionUtil.createIpv6ArbitraryBitMask(mask))
.build());
} else if (Ipv6MatchArbitraryBitMask.class.isInstance(builder.getLayer3Match())
&& Objects.isNull(Ipv6MatchArbitraryBitMask.class.cast(builder.getLayer3Match()).getIpv6DestinationAddressNoMask())) {
final Ipv6MatchArbitraryBitMask match = Ipv6MatchArbitraryBitMask.class.cast(builder.getLayer3Match());
builder.setLayer3Match(new Ipv6MatchArbitraryBitMaskBuilder(match)
.setIpv6DestinationAddressNoMask(address)
.setIpv6DestinationArbitraryBitmask(IpConversionUtil.createIpv6ArbitraryBitMask(mask))
.build());
} else {
throwErrorOnMalformed(builder, "layer3Match", "ipv6DestinationAddressNoMask");
}
}
}