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.parser.object;
10 import static com.google.common.base.Preconditions.checkArgument;
12 import io.netty.buffer.ByteBuf;
13 import io.netty.buffer.Unpooled;
14 import java.util.List;
15 import org.opendaylight.protocol.pcep.PCEPDeserializerException;
16 import org.opendaylight.protocol.pcep.spi.AbstractObjectWithTlvsParser;
17 import org.opendaylight.protocol.pcep.spi.ObjectUtil;
18 import org.opendaylight.protocol.pcep.spi.TlvRegistry;
19 import org.opendaylight.protocol.pcep.spi.VendorInformationTlvRegistry;
20 import org.opendaylight.protocol.util.BitArray;
21 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.Object;
22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.ObjectHeader;
23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.Tlv;
24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.pcrep.message.pcrep.message.replies.result.failure._case.NoPath;
25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.pcrep.message.pcrep.message.replies.result.failure._case.NoPathBuilder;
26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.pcrep.message.pcrep.message.replies.result.failure._case.no.path.Tlvs;
27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.pcrep.message.pcrep.message.replies.result.failure._case.no.path.TlvsBuilder;
28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.pcrep.message.pcrep.message.replies.result.failure._case.no.path.tlvs.NoPathVector;
29 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.vendor.information.tlvs.VendorInformationTlv;
30 import org.opendaylight.yangtools.yang.common.Uint8;
31 import org.opendaylight.yangtools.yang.common.netty.ByteBufUtils;
34 * Parser for {@link NoPath}.
36 public class PCEPNoPathObjectParser extends AbstractObjectWithTlvsParser<TlvsBuilder> {
37 private static final int CLASS = 3;
38 private static final int TYPE = 1;
41 * lengths of fields in bytes
43 private static final int FLAGS_SIZE = 16;
44 private static final int RESERVED_F_LENGTH = 1;
49 private static final int C_FLAG_OFFSET = 0;
51 public PCEPNoPathObjectParser(final TlvRegistry tlvReg, final VendorInformationTlvRegistry viTlvReg) {
52 super(tlvReg, viTlvReg, CLASS, TYPE);
56 public NoPath parseObject(final ObjectHeader header, final ByteBuf bytes) throws PCEPDeserializerException {
57 checkArgument(bytes != null && bytes.isReadable(), "Array of bytes is mandatory. Cannot be null or empty.");
59 final Uint8 issue = ByteBufUtils.readUint8(bytes);
60 final BitArray flags = BitArray.valueOf(bytes, FLAGS_SIZE);
61 bytes.skipBytes(RESERVED_F_LENGTH);
62 final TlvsBuilder tlvsBuilder = new TlvsBuilder();
63 parseTlvs(tlvsBuilder, bytes.slice());
64 return new NoPathBuilder()
65 .setIgnore(header.getIgnore())
66 .setProcessingRule(header.getProcessingRule())
67 .setNatureOfIssue(issue)
68 .setUnsatisfiedConstraints(flags.get(C_FLAG_OFFSET))
69 .setTlvs(tlvsBuilder.build())
74 public void addTlv(final TlvsBuilder builder, final Tlv tlv) {
75 if (tlv instanceof NoPathVector) {
76 builder.setNoPathVector((NoPathVector) tlv);
81 public void serializeObject(final Object object, final ByteBuf buffer) {
82 checkArgument(object instanceof NoPath, "Wrong instance of PCEPObject. Passed %s. Needed NoPathObject.",
84 final NoPath nPObj = (NoPath) object;
85 final ByteBuf body = Unpooled.buffer();
86 ByteBufUtils.writeMandatory(body, nPObj.getNatureOfIssue(), "NatureOfIssue");
87 final BitArray flags = new BitArray(FLAGS_SIZE);
88 flags.set(C_FLAG_OFFSET, nPObj.getUnsatisfiedConstraints());
89 flags.toByteBuf(body);
90 body.writeZero(RESERVED_F_LENGTH);
91 serializeTlvs(nPObj.getTlvs(), body);
92 ObjectUtil.formatSubobject(TYPE, CLASS, object.getProcessingRule(), object.getIgnore(), body, buffer);
95 public void serializeTlvs(final Tlvs tlvs, final ByteBuf body) {
97 if (tlvs.getNoPathVector() != null) {
98 serializeTlv(tlvs.getNoPathVector(), body);
100 serializeVendorInformationTlvs(tlvs.getVendorInformationTlv(), body);
105 protected final void addVendorInformationTlvs(final TlvsBuilder builder, final List<VendorInformationTlv> tlvs) {
106 if (!tlvs.isEmpty()) {
107 builder.setVendorInformationTlv(tlvs);