org.opendaylight.protocol.bgp.inet.codec.Ipv6BgpPrefixSidParser Maven / Gradle / Ivy
/*
* Copyright (c) 2016 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.protocol.bgp.inet.codec;
import com.google.common.base.Preconditions;
import io.netty.buffer.ByteBuf;
import org.opendaylight.protocol.bgp.parser.spi.BgpPrefixSidTlvParser;
import org.opendaylight.protocol.bgp.parser.spi.BgpPrefixSidTlvSerializer;
import org.opendaylight.protocol.util.BitArray;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev180329.update.attributes.bgp.prefix.sid.bgp.prefix.sid.tlvs.bgp.prefix.sid.tlv.Ipv6SidTlv;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev180329.update.attributes.bgp.prefix.sid.bgp.prefix.sid.tlvs.bgp.prefix.sid.tlv.Ipv6SidTlvBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev200120.path.attributes.attributes.bgp.prefix.sid.bgp.prefix.sid.tlvs.BgpPrefixSidTlv;
public final class Ipv6BgpPrefixSidParser implements BgpPrefixSidTlvParser, BgpPrefixSidTlvSerializer {
private static final int IPV6_SID_TYPE = 2;
private static final int RESERVED = 1;
private static final int FLAGS_SIZE = 2 * Byte.SIZE;
private static final int PROCESS_IPV6_HEADER_FLAG = 0;
@Override
public void serializeBgpPrefixSidTlv(final BgpPrefixSidTlv tlv, final ByteBuf bytes) {
Preconditions.checkArgument(tlv instanceof Ipv6SidTlv, "Incoming TLV is not Ipv6SidTlv");
final Ipv6SidTlv ipv6Tlv = (Ipv6SidTlv) tlv;
bytes.writeZero(RESERVED);
final BitArray flags = new BitArray(FLAGS_SIZE);
flags.set(PROCESS_IPV6_HEADER_FLAG, ipv6Tlv.getProcessIpv6HeadAbility());
flags.toByteBuf(bytes);
}
@Override
public Ipv6SidTlv parseBgpPrefixSidTlv(final ByteBuf buffer) {
buffer.skipBytes(RESERVED);
final boolean canProcessIpv6Header = BitArray.valueOf(buffer, FLAGS_SIZE).get(PROCESS_IPV6_HEADER_FLAG);
return new Ipv6SidTlvBuilder().setProcessIpv6HeadAbility(canProcessIpv6Header).build();
}
@Override
public int getType() {
return IPV6_SID_TYPE;
}
}