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
9 package org.opendaylight.protocol.pcep.impl.object;
11 import com.google.common.base.Preconditions;
13 import io.netty.buffer.ByteBuf;
15 import java.util.BitSet;
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.util.ByteArray;
22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.Object;
23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.ObjectHeader;
24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.RequestId;
25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.Tlv;
26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.order.tlv.Order;
27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.rp.object.Rp;
28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.rp.object.RpBuilder;
29 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.rp.object.rp.Tlvs;
30 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.rp.object.rp.TlvsBuilder;
33 * Parser for {@link Rp}
35 public class PCEPRequestParameterObjectParser extends AbstractObjectWithTlvsParser<RpBuilder> {
37 public static final int CLASS = 2;
39 public static final int TYPE = 1;
42 * lengths of fields in bytes
44 private static final int FLAGS_PRI_MF_LENGTH = 4;
45 private static final int RID_F_LENGTH = 4;
48 * lengths of subfields inside multi-field in bits
50 private static final int FLAGS_SF_LENGTH = 29;
53 * offsets of field in bytes
56 private static final int FLAGS_PRI_MF_OFFSET = 0;
57 private static final int RID_F_OFFSET = FLAGS_PRI_MF_OFFSET + FLAGS_PRI_MF_LENGTH;
58 private static final int TLVS_OFFSET = RID_F_OFFSET + RID_F_LENGTH;
61 * offsets of subfields inside multi-field in bits
64 private static final int FLAGS_SF_OFFSET = 0;
65 private static final int PRI_SF_OFFSET = FLAGS_SF_OFFSET + FLAGS_SF_LENGTH;
68 * flags offsets inside flags sub-field in bits
71 private static final int O_FLAG_OFFSET = 26;
72 private static final int B_FLAG_OFFSET = 27;
73 private static final int R_FLAG_OFFSET = 28;
76 * GCO extension flags offsets inside flags sub-field in bits
78 private static final int M_FLAG_OFFSET = 21;
79 private static final int D_FLAG_OFFSET = 22;
82 * Path-key bit (RFC5520)
84 private static final int P_FLAG_OFFSET = 23;
86 * OF extension flags offsets inside flags sub.field in bits
88 private static final int S_FLAG_OFFSET = 24;
92 private static final int F_FLAG_OFFSET = 18;
94 private static final int N_FLAG_OFFSET = 19;
96 private static final int E_FLAG_OFFSET = 20;
98 public PCEPRequestParameterObjectParser(final TlvRegistry tlvReg) {
103 public Object parseObject(final ObjectHeader header, final ByteBuf bytes) throws PCEPDeserializerException {
104 Preconditions.checkArgument(bytes != null && bytes.isReadable(), "Array of bytes is mandatory. Can't be null or empty.");
105 final BitSet flags = ByteArray.bytesToBitSet(ByteArray.readBytes(bytes, FLAGS_PRI_MF_LENGTH));
107 priority |= flags.get(PRI_SF_OFFSET + 2) ? 1 : 0;
108 priority |= (flags.get(PRI_SF_OFFSET + 1) ? 1 : 0) << 1;
109 priority |= (flags.get(PRI_SF_OFFSET) ? 1 : 0) << 2;
111 final RpBuilder builder = new RpBuilder();
112 builder.setIgnore(header.isIgnore());
113 builder.setProcessingRule(header.isProcessingRule());
115 builder.setPriority(priority);
116 builder.setFragmentation(flags.get(F_FLAG_OFFSET));
117 builder.setP2mp(flags.get(N_FLAG_OFFSET));
118 builder.setEroCompression(flags.get(E_FLAG_OFFSET));
119 builder.setMakeBeforeBreak(flags.get(M_FLAG_OFFSET));
120 builder.setOrder(flags.get(D_FLAG_OFFSET));
121 builder.setPathKey(flags.get(P_FLAG_OFFSET));
122 builder.setSupplyOf(flags.get(S_FLAG_OFFSET));
123 builder.setLoose(flags.get(O_FLAG_OFFSET));
124 builder.setBiDirectional(flags.get(B_FLAG_OFFSET));
125 builder.setReoptimization(flags.get(R_FLAG_OFFSET));
127 builder.setRequestId(new RequestId(bytes.readUnsignedInt()));
128 parseTlvs(builder, bytes.slice());
129 return builder.build();
133 public void addTlv(final RpBuilder builder, final Tlv tlv) {
134 if (tlv instanceof Order) {
135 builder.setTlvs(new TlvsBuilder().setOrder((Order) tlv).build());
140 public byte[] serializeObject(final Object object) {
141 if (!(object instanceof Rp)) {
142 throw new IllegalArgumentException("Wrong instance of PCEPObject. Passed " + object.getClass() + ". Needed RpObject.");
144 final Rp rPObj = (Rp) object;
145 final BitSet flags = new BitSet(FLAGS_PRI_MF_LENGTH * Byte.SIZE);
147 flags.set(R_FLAG_OFFSET, rPObj.isReoptimization());
148 flags.set(B_FLAG_OFFSET, rPObj.isBiDirectional());
149 flags.set(O_FLAG_OFFSET, rPObj.isLoose());
150 flags.set(M_FLAG_OFFSET, rPObj.isMakeBeforeBreak());
151 flags.set(D_FLAG_OFFSET, rPObj.isOrder());
152 flags.set(P_FLAG_OFFSET, rPObj.isPathKey());
153 flags.set(S_FLAG_OFFSET, rPObj.isSupplyOf());
154 flags.set(F_FLAG_OFFSET, rPObj.isFragmentation());
155 flags.set(N_FLAG_OFFSET, rPObj.isP2mp());
156 flags.set(E_FLAG_OFFSET, rPObj.isEroCompression());
158 flags.set(PRI_SF_OFFSET, (rPObj.getPriority() & 1 << 2) != 0);
159 flags.set(PRI_SF_OFFSET + 1, (rPObj.getPriority() & 1 << 1) != 0);
160 flags.set(PRI_SF_OFFSET + 2, (rPObj.getPriority() & 1) != 0);
162 final byte[] tlvs = serializeTlvs(rPObj.getTlvs());
163 final byte[] retBytes = new byte[TLVS_OFFSET + tlvs.length + getPadding(TLVS_OFFSET + tlvs.length, PADDED_TO)];
165 ByteArray.copyWhole(ByteArray.bitSetToBytes(flags, FLAGS_PRI_MF_LENGTH), retBytes, FLAGS_PRI_MF_OFFSET);
166 ByteArray.copyWhole(ByteArray.longToBytes(rPObj.getRequestId().getValue(), RID_F_LENGTH), retBytes, RID_F_OFFSET);
167 if (tlvs.length != 0) {
168 ByteArray.copyWhole(tlvs, retBytes, TLVS_OFFSET);
170 return ObjectUtil.formatSubobject(TYPE, CLASS, object.isProcessingRule(), object.isIgnore(), retBytes);
173 public byte[] serializeTlvs(final Tlvs tlvs) {
176 } else if (tlvs.getOrder() != null) {
177 return serializeTlv(tlvs.getOrder());