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 io.netty.buffer.ByteBuf;
12 import io.netty.buffer.Unpooled;
13 import java.util.BitSet;
14 import java.util.List;
15 import org.opendaylight.protocol.pcep.spi.AbstractObjectWithTlvsParser;
16 import org.opendaylight.protocol.pcep.spi.ObjectUtil;
17 import org.opendaylight.protocol.pcep.spi.PCEPDeserializerException;
18 import org.opendaylight.protocol.pcep.spi.TlvRegistry;
19 import org.opendaylight.protocol.pcep.spi.VendorInformationTlvRegistry;
20 import org.opendaylight.protocol.util.ByteArray;
21 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.OperationalStatus;
22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.PlspId;
23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.lsp.error.code.tlv.LspErrorCode;
24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.lsp.identifiers.tlv.LspIdentifiers;
25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.lsp.object.Lsp;
26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.lsp.object.LspBuilder;
27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.lsp.object.lsp.Tlvs;
28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.lsp.object.lsp.TlvsBuilder;
29 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.rsvp.error.spec.tlv.RsvpErrorSpec;
30 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.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;
35 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.vs.tlv.VsTlv;
38 * Parser for {@link Lsp}
40 public class Stateful07LspObjectParser extends AbstractObjectWithTlvsParser<TlvsBuilder> {
42 public static final int CLASS = 32;
44 public static final int TYPE = 1;
47 * offset of TLVs offset of other fields are not defined as constants
48 * because of non-standard mapping of bits
50 protected static final int TLVS_OFFSET = 4;
53 * 12b extended to 16b so first 4b are restricted (belongs to LSP ID)
55 protected static final int DELEGATE_FLAG_OFFSET = 15;
56 protected static final int SYNC_FLAG_OFFSET = 14;
57 protected static final int REMOVE_FLAG_OFFSET = 13;
58 protected static final int ADMINISTRATIVE_FLAG_OFFSET = 12;
59 protected static final int OPERATIONAL_OFFSET = 9;
61 protected static final int FOUR_BITS_SHIFT = 4;
62 protected static final int TWELVE_BITS_SHIFT = 12;
63 protected static final int BODY_LENGTH = 4;
64 protected static final int FLAGS_INDEX = 3;
65 protected static final int OP_VALUE_BITS_OFFSET = 7;
67 public Stateful07LspObjectParser(final TlvRegistry tlvReg, final VendorInformationTlvRegistry viTlvReg) {
68 super(tlvReg, viTlvReg);
72 public Lsp parseObject(final ObjectHeader header, final ByteBuf bytes) throws PCEPDeserializerException {
73 Preconditions.checkArgument(bytes != null && bytes.isReadable(), "Array of bytes is mandatory. Can't be null or empty.");
74 final LspBuilder builder = new LspBuilder();
75 builder.setIgnore(header.isIgnore());
76 builder.setProcessingRule(header.isProcessingRule());
77 int[] plspIdRaw = new int[] { bytes.readUnsignedByte(), bytes.readUnsignedByte(), bytes.getUnsignedByte(2), };
78 builder.setPlspId(new PlspId((long) ((plspIdRaw[0] << TWELVE_BITS_SHIFT) | (plspIdRaw[1] << FOUR_BITS_SHIFT) | (plspIdRaw[2] >> FOUR_BITS_SHIFT))));
79 final BitSet flags = ByteArray.bytesToBitSet(ByteArray.readBytes(bytes, 2));
80 builder.setDelegate(flags.get(DELEGATE_FLAG_OFFSET));
81 builder.setSync(flags.get(SYNC_FLAG_OFFSET));
82 builder.setRemove(flags.get(REMOVE_FLAG_OFFSET));
83 builder.setAdministrative(flags.get(ADMINISTRATIVE_FLAG_OFFSET));
85 s |= flags.get(OPERATIONAL_OFFSET + 2) ? 1 : 0;
86 s |= (flags.get(OPERATIONAL_OFFSET + 1) ? 1 : 0) << 1;
87 s |= (flags.get(OPERATIONAL_OFFSET) ? 1 : 0) << 2;
88 builder.setOperational(OperationalStatus.forValue(s));
89 final TlvsBuilder b = new TlvsBuilder();
90 parseTlvs(b, bytes.slice());
91 builder.setTlvs(b.build());
92 return builder.build();
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);
111 public void serializeObject(final Object object, final ByteBuf buffer) {
112 Preconditions.checkArgument(object instanceof Lsp, "Wrong instance of PCEPObject. Passed %s . Needed LspObject.", object.getClass());
113 final Lsp specObj = (Lsp) object;
114 final ByteBuf body = Unpooled.buffer();
116 final byte[] retBytes = new byte[BODY_LENGTH];
118 Preconditions.checkArgument(specObj.getPlspId() != null, "PLSP-ID not present");
119 final int lspID = specObj.getPlspId().getValue().intValue();
120 retBytes[0] = (byte) (lspID >> TWELVE_BITS_SHIFT);
121 retBytes[1] = (byte) (lspID >> FOUR_BITS_SHIFT);
122 retBytes[2] = (byte) (lspID << FOUR_BITS_SHIFT);
123 if (specObj.isDelegate() != null && specObj.isDelegate()) {
124 retBytes[FLAGS_INDEX] |= 1 << (Byte.SIZE - (DELEGATE_FLAG_OFFSET - Byte.SIZE) - 1);
126 if (specObj.isRemove() != null && specObj.isRemove()) {
127 retBytes[FLAGS_INDEX] |= 1 << (Byte.SIZE - (REMOVE_FLAG_OFFSET - Byte.SIZE) - 1);
129 if (specObj.isSync() != null && specObj.isSync()) {
130 retBytes[FLAGS_INDEX] |= 1 << (Byte.SIZE - (SYNC_FLAG_OFFSET - Byte.SIZE) - 1);
132 if (specObj.isAdministrative() != null && specObj.isAdministrative()) {
133 retBytes[FLAGS_INDEX] |= 1 << (Byte.SIZE - (ADMINISTRATIVE_FLAG_OFFSET - Byte.SIZE) - 1);
135 if (specObj.getOperational() != null) {
136 final int op = specObj.getOperational().getIntValue();
137 retBytes[FLAGS_INDEX] |= (op & OP_VALUE_BITS_OFFSET) << FOUR_BITS_SHIFT;
139 body.writeBytes(retBytes);
140 serializeTlvs(specObj.getTlvs(), body);
141 ObjectUtil.formatSubobject(TYPE, CLASS, object.isProcessingRule(), object.isIgnore(), body, buffer);
144 public void serializeTlvs(final Tlvs tlvs, final ByteBuf body) {
148 if (tlvs.getLspErrorCode() != null) {
149 serializeTlv(tlvs.getLspErrorCode(), body);
151 if (tlvs.getLspIdentifiers() != null) {
152 serializeTlv(tlvs.getLspIdentifiers(), body);
154 if (tlvs.getRsvpErrorSpec() != null) {
155 serializeTlv(tlvs.getRsvpErrorSpec(), body);
157 if (tlvs.getSymbolicPathName() != null) {
158 serializeTlv(tlvs.getSymbolicPathName(), body);
160 if (tlvs.getVsTlv() != null) {
161 serializeTlv(tlvs.getVsTlv(), body);
163 serializeVendorInformationTlvs(tlvs.getVendorInformationTlv(), body);
167 protected final void addVendorInformationTlvs(final TlvsBuilder builder, final List<VendorInformationTlv> tlvs) {
168 if (!tlvs.isEmpty()) {
169 builder.setVendorInformationTlv(tlvs);