2 * Copyright (c) 2016 Brocade Communications Systems, Inc. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
8 package org.opendaylight.protocol.bgp.l3vpn.unicast;
10 import com.google.common.base.Preconditions;
11 import io.netty.buffer.ByteBuf;
12 import org.opendaylight.bgp.concepts.NextHopUtil;
13 import org.opendaylight.bgp.concepts.RouteDistinguisherUtil;
14 import org.opendaylight.protocol.bgp.parser.BGPParsingException;
15 import org.opendaylight.protocol.bgp.parser.spi.NextHopParserSerializer;
16 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev180329.next.hop.CNextHop;
18 public abstract class AbstractVpnNextHopParserSerializer implements NextHopParserSerializer {
19 private final int ipAddrLength;
20 private final Class<?> ipNextHopCaseClazz;
22 protected AbstractVpnNextHopParserSerializer(final int ipAddrLength, final Class<?> ipNextHopCaseClazz) {
23 this.ipAddrLength = ipAddrLength;
24 this.ipNextHopCaseClazz = ipNextHopCaseClazz;
28 public CNextHop parseNextHop(final ByteBuf buffer) throws BGPParsingException {
29 Preconditions.checkArgument(buffer.readableBytes() == (this.ipAddrLength + RouteDistinguisherUtil.RD_LENGTH),
30 "Length of byte array for NEXT_HOP should be %s, but is %s",
31 this.ipAddrLength + RouteDistinguisherUtil.RD_LENGTH, buffer.readableBytes());
32 buffer.readBytes(RouteDistinguisherUtil.RD_LENGTH);
33 return NextHopUtil.parseNextHop(buffer.readBytes(this.ipAddrLength));
37 public void serializeNextHop(final CNextHop nextHop, final ByteBuf byteAggregator) {
38 Preconditions.checkArgument(this.ipNextHopCaseClazz.isInstance(nextHop),
39 "cNextHop is not a VPN %s NextHop object.", this.ipNextHopCaseClazz.getSimpleName());
40 byteAggregator.writeZero(RouteDistinguisherUtil.RD_LENGTH);
41 NextHopUtil.serializeNextHop(nextHop, byteAggregator);