2 * Copyright (c) 2015 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.linkstate.attribute.sr;
10 import io.netty.buffer.ByteBuf;
11 import org.opendaylight.protocol.bgp.linkstate.attribute.sr.SidLabelIndexParser.Size;
12 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev150210.prefix.state.SrPrefix;
13 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev150210.prefix.state.SrPrefixBuilder;
14 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.segment.routing.ext.rev151014.Algorithm;
15 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.segment.routing.ext.rev151014.sid.label.index.SidLabelIndex;
17 public final class SrPrefixAttributesParser {
19 private SrPrefixAttributesParser() {
20 throw new UnsupportedOperationException();
23 private static final int RESERVED_PREFIX = 2;
25 public static SrPrefix parseSrPrefix(final ByteBuf buffer) {
26 final SrPrefixBuilder builder = new SrPrefixBuilder();
27 builder.setFlags(new byte[] { (byte) buffer.readUnsignedByte() });
28 builder.setAlgorithm(Algorithm.forValue(buffer.readUnsignedByte()));
29 buffer.skipBytes(RESERVED_PREFIX);
30 builder.setSidLabelIndex(SidLabelIndexParser.parseSidLabelIndex(Size.forValue(buffer.readableBytes()), buffer));
31 return builder.build();
34 public static void serializeSrPrefix(final SrPrefix srPrefix, final ByteBuf aggregator) {
35 serializePrefixAttributes(srPrefix.getFlags(), srPrefix.getAlgorithm(), srPrefix.getSidLabelIndex(), aggregator);
38 public static void serializePrefixAttributes(final byte[] flags, final Algorithm algorithm, final SidLabelIndex sidLabelIndex, final ByteBuf buffer) {
39 buffer.writeByte(flags[0]);
40 buffer.writeByte(algorithm.getIntValue());
41 buffer.writeZero(RESERVED_PREFIX);
42 buffer.writeBytes(SidLabelIndexParser.serializeSidValue(sidLabelIndex));