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 static com.google.common.base.Preconditions.checkArgument;
12 import com.google.common.primitives.UnsignedBytes;
13 import io.netty.buffer.ByteBuf;
14 import io.netty.buffer.Unpooled;
15 import java.util.List;
16 import org.opendaylight.protocol.pcep.spi.AbstractObjectWithTlvsParser;
17 import org.opendaylight.protocol.pcep.spi.ObjectUtil;
18 import org.opendaylight.protocol.pcep.spi.PCEPDeserializerException;
19 import org.opendaylight.protocol.pcep.spi.TlvRegistry;
20 import org.opendaylight.protocol.pcep.spi.VendorInformationTlvRegistry;
21 import org.opendaylight.protocol.util.BitArray;
22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev181109.OperationalStatus;
23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev181109.PlspId;
24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev181109.lsp.error.code.tlv.LspErrorCode;
25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev181109.lsp.identifiers.tlv.LspIdentifiers;
26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev181109.lsp.object.Lsp;
27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev181109.lsp.object.LspBuilder;
28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev181109.lsp.object.lsp.Tlvs;
29 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev181109.lsp.object.lsp.TlvsBuilder;
30 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev181109.path.binding.tlv.PathBinding;
31 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev181109.rsvp.error.spec.tlv.RsvpErrorSpec;
32 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev181109.symbolic.path.name.tlv.SymbolicPathName;
33 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.Object;
34 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.ObjectHeader;
35 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.Tlv;
36 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.vendor.information.tlvs.VendorInformationTlv;
37 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.vs.tlv.VsTlv;
38 import org.opendaylight.yangtools.yang.common.Uint32;
41 * Parser for {@link Lsp}.
43 public class Stateful07LspObjectParser extends AbstractObjectWithTlvsParser<TlvsBuilder> {
45 private static final int CLASS = 32;
47 private static final int TYPE = 1;
50 * 12b extended to 16b so first 4b are restricted (belongs to LSP ID)
52 protected static final int DELEGATE = 11;
53 protected static final int SYNC = 10;
54 protected static final int REMOVE = 9;
55 protected static final int ADMINISTRATIVE = 8;
56 protected static final int OPERATIONAL = 5;
58 protected static final int FOUR_BITS_SHIFT = 4;
59 protected static final int FLAGS_SIZE = 12;
61 public Stateful07LspObjectParser(final TlvRegistry tlvReg, final VendorInformationTlvRegistry viTlvReg) {
62 super(tlvReg, viTlvReg, CLASS, TYPE);
66 public Lsp parseObject(final ObjectHeader header, final ByteBuf bytes) throws PCEPDeserializerException {
67 checkArgument(bytes != null && bytes.isReadable(), "Array of bytes is mandatory. Can't be null or empty.");
68 final LspBuilder builder = new LspBuilder();
69 builder.setIgnore(header.isIgnore());
70 builder.setProcessingRule(header.isProcessingRule());
72 = new int[] { bytes.readUnsignedByte(), bytes.readUnsignedByte(), bytes.getUnsignedByte(2), };
73 builder.setPlspId(new PlspId(Uint32.valueOf(plspIdRaw[0] << FLAGS_SIZE | plspIdRaw[1] << FOUR_BITS_SHIFT
74 | plspIdRaw[2] >> FOUR_BITS_SHIFT)));
75 parseFlags(builder, bytes);
76 final TlvsBuilder b = new TlvsBuilder();
77 parseTlvs(b, bytes.slice());
78 builder.setTlvs(b.build());
79 return builder.build();
82 protected void parseFlags(final LspBuilder builder, final ByteBuf bytes) {
83 final BitArray flags = BitArray.valueOf(bytes, FLAGS_SIZE);
84 builder.setDelegate(flags.get(DELEGATE));
85 builder.setSync(flags.get(SYNC));
86 builder.setRemove(flags.get(REMOVE));
87 builder.setAdministrative(flags.get(ADMINISTRATIVE));
89 oper |= flags.get(OPERATIONAL + 2) ? 1 : 0;
90 oper |= (flags.get(OPERATIONAL + 1) ? 1 : 0) << 1;
91 oper |= (flags.get(OPERATIONAL) ? 1 : 0) << 2;
92 builder.setOperational(OperationalStatus.forValue(oper));
96 public void addTlv(final TlvsBuilder builder, final Tlv tlv) {
97 if (tlv instanceof LspErrorCode) {
98 builder.setLspErrorCode((LspErrorCode) tlv);
99 } else if (tlv instanceof LspIdentifiers) {
100 builder.setLspIdentifiers((LspIdentifiers) tlv);
101 } else if (tlv instanceof RsvpErrorSpec) {
102 builder.setRsvpErrorSpec((RsvpErrorSpec) tlv);
103 } else if (tlv instanceof SymbolicPathName) {
104 builder.setSymbolicPathName((SymbolicPathName) tlv);
105 } else if (tlv instanceof VsTlv) {
106 builder.setVsTlv((VsTlv) tlv);
107 } else if (tlv instanceof PathBinding) {
108 builder.setPathBinding((PathBinding) tlv);
113 public void serializeObject(final Object object, final ByteBuf buffer) {
114 checkArgument(object instanceof Lsp, "Wrong instance of PCEPObject. Passed %s . Needed LspObject.",
116 final Lsp specObj = (Lsp) object;
117 final ByteBuf body = Unpooled.buffer();
118 final PlspId plspId = specObj.getPlspId();
119 checkArgument(plspId != null, "PLSP-ID not present");
120 body.writeMedium(plspId.getValue().intValue() << FOUR_BITS_SHIFT);
121 final BitArray flags = serializeFlags(specObj);
123 if (specObj.getOperational() != null) {
124 op = UnsignedBytes.checkedCast(specObj.getOperational().getIntValue());
125 op = (byte) (op << FOUR_BITS_SHIFT);
127 final byte[] res = flags.array();
128 res[res.length - 1] = (byte) (res[res.length - 1] | op);
129 body.writeByte(res[res.length - 1]);
130 serializeTlvs(specObj.getTlvs(), body);
131 ObjectUtil.formatSubobject(TYPE, CLASS, object.isProcessingRule(), object.isIgnore(), body, buffer);
134 protected BitArray serializeFlags(final Lsp specObj) {
135 final BitArray flags = new BitArray(FLAGS_SIZE);
136 flags.set(DELEGATE, specObj.isDelegate());
137 flags.set(REMOVE, specObj.isRemove());
138 flags.set(SYNC, specObj.isSync());
139 flags.set(ADMINISTRATIVE, specObj.isAdministrative());
143 public void serializeTlvs(final Tlvs tlvs, final ByteBuf body) {
147 if (tlvs.getLspErrorCode() != null) {
148 serializeTlv(tlvs.getLspErrorCode(), body);
150 if (tlvs.getLspIdentifiers() != null) {
151 serializeTlv(tlvs.getLspIdentifiers(), body);
153 if (tlvs.getRsvpErrorSpec() != null) {
154 serializeTlv(tlvs.getRsvpErrorSpec(), body);
156 if (tlvs.getSymbolicPathName() != null) {
157 serializeTlv(tlvs.getSymbolicPathName(), body);
159 if (tlvs.getVsTlv() != null) {
160 serializeTlv(tlvs.getVsTlv(), body);
162 serializeVendorInformationTlvs(tlvs.getVendorInformationTlv(), body);
163 if (tlvs.getPathBinding() != null) {
164 serializeTlv(tlvs.getPathBinding(), body);
169 protected final void addVendorInformationTlvs(final TlvsBuilder builder, final List<VendorInformationTlv> tlvs) {
170 if (!tlvs.isEmpty()) {
171 builder.setVendorInformationTlv(tlvs);