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;
12 import io.netty.buffer.ByteBuf;
14 import org.opendaylight.protocol.bgp.parser.spi.AttributeParser;
15 import org.opendaylight.protocol.bgp.parser.spi.AttributeSerializer;
16 import org.opendaylight.protocol.concepts.Ipv4Util;
17 import org.opendaylight.protocol.util.ByteArray;
18 import org.opendaylight.protocol.util.ReferenceCache;
19 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.AsNumber;
20 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.Ipv4Address;
21 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.PathAttributes;
22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.path.attributes.Aggregator;
23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.path.attributes.AggregatorBuilder;
24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.update.PathAttributesBuilder;
25 import org.opendaylight.yangtools.yang.binding.DataObject;
27 public final class AggregatorAttributeParser implements AttributeParser, AttributeSerializer {
29 public static final int TYPE = 7;
31 private final ReferenceCache refCache;
33 public AggregatorAttributeParser(final ReferenceCache refCache) {
34 this.refCache = Preconditions.checkNotNull(refCache);
38 * Parse AGGREGATOR from bytes
40 * @param buffer byte buffer to be parsed
41 * @return {@link Aggregator} BGP Aggregator
44 public void parseAttribute(final ByteBuf buffer, final PathAttributesBuilder builder) {
45 final AsNumber asNumber = this.refCache.getSharedReference(new AsNumber(buffer.readUnsignedInt()));
46 final Ipv4Address address = Ipv4Util.addressForBytes(ByteArray.readAllBytes(buffer));
47 builder.setAggregator(new AggregatorBuilder().setAsNumber(asNumber).setNetworkAddress(address).build());
51 public void serializeAttribute(DataObject attribute, ByteBuf byteAggregator) {
52 PathAttributes pathAttributes = (PathAttributes) attribute;
53 Aggregator aggregator = pathAttributes.getAggregator();
54 if (aggregator == null) {
57 Preconditions.checkArgument(aggregator.getAsNumber() != null, "Missing AS number that formed the aggregate route (encoded as 2 octets).");
58 byteAggregator.writeInt(aggregator.getAsNumber().getValue().shortValue());
59 byteAggregator.writeBytes(Ipv4Util.bytesForAddress(aggregator.getNetworkAddress()));