2 * Copyright (c) 2013 Cisco 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.parser.impl.message.update;
10 import com.google.common.base.Preconditions;
11 import io.netty.buffer.ByteBuf;
12 import io.netty.buffer.Unpooled;
13 import org.opendaylight.bgp.concepts.NextHopUtil;
14 import org.opendaylight.protocol.bgp.parser.spi.AttributeParser;
15 import org.opendaylight.protocol.bgp.parser.spi.AttributeSerializer;
16 import org.opendaylight.protocol.bgp.parser.spi.AttributeUtil;
17 import org.opendaylight.protocol.util.Ipv4Util;
18 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.path.attributes.Attributes;
19 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.path.attributes.AttributesBuilder;
20 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.next.hop.CNextHop;
21 import org.opendaylight.yangtools.yang.binding.DataObject;
23 public final class NextHopAttributeParser implements AttributeParser, AttributeSerializer {
25 public static final int TYPE = 3;
28 public void parseAttribute(final ByteBuf buffer, final AttributesBuilder builder) {
29 Preconditions.checkArgument(buffer.readableBytes() == Ipv4Util.IP4_LENGTH, "Length of byte array for NEXT_HOP should be %s, but is %s", buffer.readableBytes(), Ipv4Util.IP4_LENGTH);
30 builder.setCNextHop(NextHopUtil.parseNextHop(buffer));
34 public void serializeAttribute(final DataObject attribute, final ByteBuf byteAggregator) {
35 Preconditions.checkArgument(attribute instanceof Attributes, "Attribute parameter is not a PathAttribute object.");
36 final CNextHop cNextHop = ((Attributes) attribute).getCNextHop();
37 if (cNextHop == null) {
40 final ByteBuf nextHopBuffer = Unpooled.buffer();
41 NextHopUtil.serializeNextHop(cNextHop, nextHopBuffer);
42 AttributeUtil.formatAttribute(AttributeUtil.TRANSITIVE, TYPE, nextHopBuffer, byteAggregator);