/*
* 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.Ipv4Address;
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.Ipv4Match;
import org.opendaylight.yang.gen.v1.urn.opendaylight.model.match.types.rev131026.match.layer._3.match.Ipv4MatchArbitraryBitMask;
import org.opendaylight.yang.gen.v1.urn.opendaylight.model.match.types.rev131026.match.layer._3.match.Ipv4MatchArbitraryBitMaskBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.model.match.types.rev131026.match.layer._3.match.Ipv4MatchBuilder;
import io.netty.buffer.ByteBuf;
public class Ipv4SourceEntryDeserializer extends AbstractMatchEntryDeserializer {
@Override
public void deserializeEntry(ByteBuf message, MatchBuilder builder) {
final boolean hasMask = processHeader(message);
final Ipv4Address address = ByteBufUtils.readIetfIpv4Address(message);
if (hasMask) {
final byte[] mask = OxmDeserializerHelper.convertMask(message, EncodeConstants.GROUPS_IN_IPV4_ADDRESS);
if (IpConversionUtil.isArbitraryBitMask(mask)) {
setArbitraryMatch(builder, address, mask);
} else {
setPrefixMatch(builder, address, mask);
}
} else {
setPrefixMatch(builder, address, null);
}
}
private static void setPrefixMatch(final MatchBuilder builder, final Ipv4Address address, final byte[] mask) {
if (Objects.isNull(builder.getLayer3Match())) {
builder.setLayer3Match(new Ipv4MatchBuilder()
.setIpv4Source(IpConversionUtil.createPrefix(address, mask))
.build());
} else if (Ipv4Match.class.isInstance(builder.getLayer3Match())
&& Objects.isNull(Ipv4Match.class.cast(builder.getLayer3Match()).getIpv4Source())) {
builder.setLayer3Match(new Ipv4MatchBuilder(Ipv4Match.class.cast(builder.getLayer3Match()))
.setIpv4Source(IpConversionUtil.createPrefix(address, mask))
.build());
} else {
throwErrorOnMalformed(builder, "layer3Match", "ipv4Source");
}
}
private static void setArbitraryMatch(final MatchBuilder builder, final Ipv4Address address,
final byte[] mask) {
if (Objects.isNull(builder.getLayer3Match())) {
builder.setLayer3Match(new Ipv4MatchArbitraryBitMaskBuilder()
.setIpv4SourceAddressNoMask(address)
.setIpv4SourceArbitraryBitmask(IpConversionUtil.createArbitraryBitMask(mask))
.build());
} else if (Ipv4MatchArbitraryBitMask.class.isInstance(builder.getLayer3Match())
&& Objects.isNull(Ipv4MatchArbitraryBitMask.class.cast(builder.getLayer3Match()).getIpv4SourceAddressNoMask())) {
builder.setLayer3Match(new Ipv4MatchArbitraryBitMaskBuilder(Ipv4MatchArbitraryBitMask.class.cast(builder.getLayer3Match()))
.setIpv4SourceAddressNoMask(address)
.setIpv4SourceArbitraryBitmask(IpConversionUtil.createArbitraryBitMask(mask))
.build());
} else {
throwErrorOnMalformed(builder, "layer3Match", "ipv4SourceAddressNoMask");
}
}
}