2 * Copyright (c) 2014 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.stateful02;
10 import static org.opendaylight.protocol.util.ByteBufWriteUtil.writeMedium;
12 import com.google.common.base.Preconditions;
13 import io.netty.buffer.ByteBuf;
14 import io.netty.buffer.Unpooled;
15 import java.util.BitSet;
16 import java.util.List;
17 import org.opendaylight.protocol.pcep.spi.AbstractObjectWithTlvsParser;
18 import org.opendaylight.protocol.pcep.spi.ObjectUtil;
19 import org.opendaylight.protocol.pcep.spi.PCEPDeserializerException;
20 import org.opendaylight.protocol.pcep.spi.TlvRegistry;
21 import org.opendaylight.protocol.pcep.spi.VendorInformationTlvRegistry;
22 import org.opendaylight.protocol.util.ByteArray;
23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.crabbe.stateful._02.rev140110.PlspId;
24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.crabbe.stateful._02.rev140110.lsp.db.version.tlv.LspDbVersion;
25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.crabbe.stateful._02.rev140110.lsp.object.Lsp;
26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.crabbe.stateful._02.rev140110.lsp.object.LspBuilder;
27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.crabbe.stateful._02.rev140110.lsp.object.lsp.Tlvs;
28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.crabbe.stateful._02.rev140110.lsp.object.lsp.TlvsBuilder;
29 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.crabbe.stateful._02.rev140110.rsvp.error.spec.tlv.RsvpErrorSpec;
30 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.crabbe.stateful._02.rev140110.symbolic.path.name.tlv.SymbolicPathName;
31 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.Object;
32 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.ObjectHeader;
33 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.Tlv;
34 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.vendor.information.tlvs.VendorInformationTlv;
37 * Parser for {@link Lsp}
39 public class Stateful02LspObjectParser extends AbstractObjectWithTlvsParser<TlvsBuilder> {
41 public static final int CLASS = 32;
43 public static final int TYPE = 1;
46 * first 4b are restricted
48 private static final int DELEGATE_FLAG_OFFSET = 15;
49 private static final int SYNC_FLAG_OFFSET = 14;
50 private static final int OPERATIONAL_FLAG_OFFSET = 13;
51 private static final int REMOVE_FLAG_OFFSET = 12;
53 private static final int ONE_B_OFFSET = 12;
54 private static final int TWO_B_OFFSET = 4;
56 private static final int FLAGS_SIZE = 2;
58 public Stateful02LspObjectParser(final TlvRegistry tlvReg, final VendorInformationTlvRegistry viTlvReg) {
59 super(tlvReg, viTlvReg);
63 public Lsp parseObject(final ObjectHeader header, final ByteBuf bytes) throws PCEPDeserializerException {
64 Preconditions.checkArgument(bytes != null && bytes.isReadable(), "Array of bytes is mandatory. Can't be null or empty.");
65 final LspBuilder builder = new LspBuilder();
66 builder.setIgnore(header.isIgnore());
67 builder.setProcessingRule(header.isProcessingRule());
68 final int[] plspIdRaw = { bytes.readUnsignedByte(), bytes.readUnsignedByte(), bytes.getUnsignedByte(2) };
69 builder.setPlspId(new PlspId((long) ((plspIdRaw[0] << ONE_B_OFFSET) | (plspIdRaw[1] << TWO_B_OFFSET) | (plspIdRaw[2] >> TWO_B_OFFSET))));
70 final BitSet flags = ByteArray.bytesToBitSet(ByteArray.readBytes(bytes, FLAGS_SIZE));
71 builder.setDelegate(flags.get(DELEGATE_FLAG_OFFSET));
72 builder.setSync(flags.get(SYNC_FLAG_OFFSET));
73 builder.setRemove(flags.get(REMOVE_FLAG_OFFSET));
74 builder.setOperational(flags.get(OPERATIONAL_FLAG_OFFSET));
75 final TlvsBuilder b = new TlvsBuilder();
76 parseTlvs(b, bytes.slice());
77 builder.setTlvs(b.build());
78 return builder.build();
82 public void addTlv(final TlvsBuilder builder, final Tlv tlv) {
83 if (tlv instanceof RsvpErrorSpec) {
84 builder.setRsvpErrorSpec((RsvpErrorSpec) tlv);
85 } else if (tlv instanceof SymbolicPathName) {
86 builder.setSymbolicPathName((SymbolicPathName) tlv);
87 } else if (tlv instanceof LspDbVersion) {
88 builder.setLspDbVersion((LspDbVersion) tlv);
93 public void serializeObject(final Object object, final ByteBuf buffer) {
94 Preconditions.checkArgument(object instanceof Lsp, "Wrong instance of PCEPObject. Passed %s. Needed LspObject.", object.getClass());
95 final Lsp specObj = (Lsp) object;
96 final ByteBuf body = Unpooled.buffer();
97 final PlspId plsp = specObj.getPlspId();
98 Preconditions.checkArgument(plsp != null, "PLSP-ID not present");
99 writeMedium(plsp.getValue().intValue() << TWO_B_OFFSET, body);
101 final BitSet flags = new BitSet(2 * Byte.SIZE);
102 if (specObj.isDelegate() != null) {
103 flags.set(DELEGATE_FLAG_OFFSET, specObj.isDelegate());
105 if (specObj.isRemove() != null) {
106 flags.set(REMOVE_FLAG_OFFSET, specObj.isRemove());
108 if (specObj.isSync() != null) {
109 flags.set(SYNC_FLAG_OFFSET, specObj.isSync());
111 if (specObj.isOperational() != null) {
112 flags.set(OPERATIONAL_FLAG_OFFSET, specObj.isOperational());
114 body.writeByte(ByteArray.bitSetToBytes(flags, FLAGS_SIZE)[1]);
115 serializeTlvs(specObj.getTlvs(), body);
116 ObjectUtil.formatSubobject(TYPE, CLASS, object.isProcessingRule(), object.isIgnore(), body, buffer);
119 public void serializeTlvs(final Tlvs tlvs, final ByteBuf body) {
123 if (tlvs.getRsvpErrorSpec() != null) {
124 serializeTlv(tlvs.getRsvpErrorSpec(), body);
126 if (tlvs.getSymbolicPathName() != null) {
127 serializeTlv(tlvs.getSymbolicPathName(), body);
129 if (tlvs.getLspDbVersion() != null) {
130 serializeTlv(tlvs.getLspDbVersion(), body);
132 serializeVendorInformationTlvs(tlvs.getVendorInformationTlv(), body);
136 protected final void addVendorInformationTlvs(final TlvsBuilder builder, final List<VendorInformationTlv> tlvs) {
137 if (!tlvs.isEmpty()) {
138 builder.setVendorInformationTlv(tlvs);