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.pcep.ietf.stateful07;
10 import com.google.common.base.Preconditions;
11 import com.google.common.primitives.UnsignedBytes;
13 import io.netty.buffer.ByteBuf;
14 import io.netty.buffer.Unpooled;
16 import java.util.BitSet;
18 import org.opendaylight.protocol.concepts.Ipv4Util;
19 import org.opendaylight.protocol.concepts.Ipv6Util;
20 import org.opendaylight.protocol.pcep.spi.PCEPDeserializerException;
21 import org.opendaylight.protocol.pcep.spi.TlvParser;
22 import org.opendaylight.protocol.pcep.spi.TlvSerializer;
23 import org.opendaylight.protocol.pcep.spi.TlvUtil;
24 import org.opendaylight.protocol.util.ByteArray;
25 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.IpAddress;
26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.iana.rev130816.EnterpriseNumber;
27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.rsvp.error.spec.tlv.RsvpErrorSpec;
28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.rsvp.error.spec.tlv.RsvpErrorSpecBuilder;
29 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.rsvp.error.spec.tlv.rsvp.error.spec.ErrorType;
30 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.rsvp.error.spec.tlv.rsvp.error.spec.error.type.RsvpCase;
31 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.rsvp.error.spec.tlv.rsvp.error.spec.error.type.RsvpCaseBuilder;
32 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.rsvp.error.spec.tlv.rsvp.error.spec.error.type.UserCase;
33 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.rsvp.error.spec.tlv.rsvp.error.spec.error.type.UserCaseBuilder;
34 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.rsvp.error.spec.tlv.rsvp.error.spec.error.type.rsvp._case.RsvpError;
35 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.rsvp.error.spec.tlv.rsvp.error.spec.error.type.rsvp._case.RsvpErrorBuilder;
36 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.rsvp.error.spec.tlv.rsvp.error.spec.error.type.user._case.UserError;
37 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.rsvp.error.spec.tlv.rsvp.error.spec.error.type.user._case.UserErrorBuilder;
38 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.Tlv;
39 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev130820.ErrorSpec.Flags;
42 * Parser for {@link RsvpErrorSpec}
44 public final class Stateful07RSVPErrorSpecTlvParser implements TlvParser, TlvSerializer {
46 public static final int TYPE = 21;
48 private static final int FLAGS_F_LENGTH = 1;
50 private static final int RSVP_ERROR_CLASS_NUM = 6;
51 private static final int RSVP_IPV4_ERROR_CLASS_TYPE = 1;
52 private static final int RSVP_IPV6_ERROR_CLASS_TYPE = 2;
54 private static final int USER_ERROR_CLASS_NUM = 194;
55 private static final int USER_ERROR_CLASS_TYPE = 1;
57 private static final int IN_PLACE_FLAG_OFFSET = 7;
58 private static final int NOT_GUILTY_FLAGS_OFFSET = 6;
61 public RsvpErrorSpec parseTlv(final ByteBuf buffer) throws PCEPDeserializerException {
65 final int classNum = UnsignedBytes.toInt(buffer.readByte());
66 final int classType = UnsignedBytes.toInt(buffer.readByte());
67 ErrorType errorType = null;
68 if (classNum == RSVP_ERROR_CLASS_NUM) {
69 errorType = parseRsvp(classType, buffer.slice());
70 } else if (classNum == USER_ERROR_CLASS_NUM && classType == USER_ERROR_CLASS_TYPE) {
71 errorType = parseUserError(buffer.slice());
73 return new RsvpErrorSpecBuilder().setErrorType(errorType).build();
77 public void serializeTlv(final Tlv tlv, final ByteBuf buffer) {
78 Preconditions.checkArgument(tlv != null, "RSVPErrorSpecTlv is mandatory.");
79 final RsvpErrorSpec rsvp = (RsvpErrorSpec) tlv;
80 final ByteBuf body = Unpooled.buffer();
81 if (rsvp.getErrorType().getImplementedInterface().equals(RsvpCase.class)) {
82 final RsvpCase r = (RsvpCase) rsvp.getErrorType();
83 serializeRsvp(r.getRsvpError(), body);
84 TlvUtil.formatTlv(TYPE, body, buffer);
86 final UserCase u = (UserCase) rsvp.getErrorType();
87 serializerUserError(u.getUserError(), body);
88 TlvUtil.formatTlv(TYPE, body, buffer);
92 private UserCase parseUserError(final ByteBuf buffer) {
93 final UserErrorBuilder error = new UserErrorBuilder();
94 error.setEnterprise(new EnterpriseNumber(buffer.readUnsignedInt()));
95 error.setSubOrg((short) UnsignedBytes.toInt(buffer.readByte()));
96 final int errDescrLength = UnsignedBytes.toInt(buffer.readByte());
97 error.setValue(buffer.readUnsignedShort());
98 error.setDescription(ByteArray.bytesToHRString(ByteArray.readBytes(buffer, errDescrLength)));
99 // if we have any subobjects, place the implementation here
100 return new UserCaseBuilder().setUserError(error.build()).build();
103 private void serializerUserError(final UserError ue, final ByteBuf body) {
104 byte[] desc = (ue.getDescription() == null) ? new byte[0] : ue.getDescription().getBytes();
105 body.writeByte(USER_ERROR_CLASS_NUM);
106 body.writeByte(USER_ERROR_CLASS_TYPE);
107 body.writeInt(ue.getEnterprise().getValue().intValue());
108 body.writeByte(ue.getSubOrg());
109 body.writeByte(desc.length);
110 body.writeShort(ue.getValue().shortValue());
111 body.writeBytes(desc);
114 private RsvpCase parseRsvp(final int classType, final ByteBuf buffer) {
115 final RsvpErrorBuilder builder = new RsvpErrorBuilder();
116 if (classType == RSVP_IPV4_ERROR_CLASS_TYPE) {
117 builder.setNode(new IpAddress(Ipv4Util.addressForBytes(ByteArray.readBytes(buffer, Ipv4Util.IP4_LENGTH))));
118 } else if (classType == RSVP_IPV6_ERROR_CLASS_TYPE) {
119 builder.setNode(new IpAddress(Ipv6Util.addressForBytes(ByteArray.readBytes(buffer, Ipv6Util.IPV6_LENGTH))));
121 final BitSet flags = ByteArray.bytesToBitSet(ByteArray.readBytes(buffer, FLAGS_F_LENGTH));
122 builder.setFlags(new Flags(flags.get(IN_PLACE_FLAG_OFFSET), flags.get(NOT_GUILTY_FLAGS_OFFSET)));
123 final short errorCode = buffer.readUnsignedByte();
124 builder.setCode(errorCode);
125 final int errorValue = buffer.readUnsignedShort();
126 builder.setValue(errorValue);
127 return new RsvpCaseBuilder().setRsvpError(builder.build()).build();
130 private void serializeRsvp(final RsvpError rsvp, final ByteBuf body) {
131 final BitSet flags = new BitSet(FLAGS_F_LENGTH * Byte.SIZE);
132 flags.set(IN_PLACE_FLAG_OFFSET, rsvp.getFlags().isInPlace());
133 flags.set(NOT_GUILTY_FLAGS_OFFSET, rsvp.getFlags().isNotGuilty());
134 final IpAddress node = rsvp.getNode();
135 if (node.getIpv4Address() != null) {
136 body.writeByte(RSVP_ERROR_CLASS_NUM);
137 body.writeByte(RSVP_IPV4_ERROR_CLASS_TYPE);
138 body.writeBytes(Ipv4Util.bytesForAddress(node.getIpv4Address()));
140 body.writeByte(RSVP_ERROR_CLASS_NUM);
141 body.writeByte(RSVP_IPV6_ERROR_CLASS_TYPE);
142 body.writeBytes(Ipv6Util.bytesForAddress(node.getIpv6Address()));
144 body.writeBytes(ByteArray.bitSetToBytes(flags, FLAGS_F_LENGTH));
145 body.writeByte(rsvp.getCode());
146 body.writeShort(rsvp.getValue().shortValue());