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 java.util.Arrays;
12 import java.util.BitSet;
14 import org.opendaylight.protocol.pcep.spi.PCEPDeserializerException;
15 import org.opendaylight.protocol.pcep.spi.TlvHandlerRegistry;
16 import org.opendaylight.protocol.util.ByteArray;
17 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.Object;
18 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.ObjectHeader;
19 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.RequestId;
20 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.Tlv;
21 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.order.tlv.Order;
22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.rp.object.Rp;
23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.rp.object.RpBuilder;
24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.rp.object.rp.Tlvs;
25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.rp.object.rp.TlvsBuilder;
28 * Parser for {@link Rp}
30 public class PCEPRequestParameterObjectParser extends AbstractObjectWithTlvsParser<RpBuilder> {
32 public static final int CLASS = 2;
34 public static final int TYPE = 1;
37 * lengths of fields in bytes
39 private static final int FLAGS_PRI_MF_LENGTH = 4;
40 private static final int RID_F_LENGTH = 4;
43 * lengths of subfields inside multi-field in bits
45 private static final int FLAGS_SF_LENGTH = 29;
48 * offsets of field in bytes
51 private static final int FLAGS_PRI_MF_OFFSET = 0;
52 private static final int RID_F_OFFSET = FLAGS_PRI_MF_OFFSET + FLAGS_PRI_MF_LENGTH;
53 private static final int TLVS_OFFSET = RID_F_OFFSET + RID_F_LENGTH;
56 * offsets of subfields inside multi-field in bits
59 private static final int FLAGS_SF_OFFSET = 0;
60 private static final int PRI_SF_OFFSET = FLAGS_SF_OFFSET + FLAGS_SF_LENGTH;
63 * flags offsets inside flags sub-field in bits
66 private static final int O_FLAG_OFFSET = 26;
67 private static final int B_FLAG_OFFSET = 27;
68 private static final int R_FLAG_OFFSET = 28;
71 * GCO extension flags offsets inside flags sub-field in bits
73 private static final int M_FLAG_OFFSET = 21;
74 private static final int D_FLAG_OFFSET = 22;
77 * Path-key bit (RFC5520)
79 private static final int P_FLAG_OFFSET = 23;
81 * OF extension flags offsets inside flags sub.field in bits
83 private static final int S_FLAG_OFFSET = 24;
87 private static final int F_FLAG_OFFSET = 18;
89 private static final int N_FLAG_OFFSET = 19;
91 private static final int E_FLAG_OFFSET = 20;
93 public PCEPRequestParameterObjectParser(final TlvHandlerRegistry tlvReg) {
98 public Object parseObject(final ObjectHeader header, final byte[] bytes) throws PCEPDeserializerException {
99 if (bytes == null || bytes.length == 0) {
100 throw new IllegalArgumentException("Array of bytes is mandatory. Can't be null or empty.");
103 final BitSet flags = ByteArray.bytesToBitSet(Arrays.copyOfRange(bytes, FLAGS_PRI_MF_OFFSET, FLAGS_PRI_MF_OFFSET
104 + FLAGS_PRI_MF_LENGTH));
106 priority |= flags.get(PRI_SF_OFFSET + 2) ? 1 : 0;
107 priority |= (flags.get(PRI_SF_OFFSET + 1) ? 1 : 0) << 1;
108 priority |= (flags.get(PRI_SF_OFFSET) ? 1 : 0) << 2;
110 final RpBuilder builder = new RpBuilder();
111 builder.setIgnore(header.isIgnore());
112 builder.setProcessingRule(header.isProcessingRule());
114 builder.setPriority(priority);
115 builder.setFragmentation(flags.get(F_FLAG_OFFSET));
116 builder.setP2mp(flags.get(N_FLAG_OFFSET));
117 builder.setEroCompression(flags.get(E_FLAG_OFFSET));
118 builder.setMakeBeforeBreak(flags.get(M_FLAG_OFFSET));
119 builder.setOrder(flags.get(D_FLAG_OFFSET));
120 builder.setPathKey(flags.get(P_FLAG_OFFSET));
121 builder.setSupplyOf(flags.get(S_FLAG_OFFSET));
122 builder.setLoose(flags.get(O_FLAG_OFFSET));
123 builder.setBiDirectional(flags.get(B_FLAG_OFFSET));
124 builder.setReoptimization(flags.get(R_FLAG_OFFSET));
126 builder.setRequestId(new RequestId(ByteArray.bytesToLong(Arrays.copyOfRange(bytes, RID_F_OFFSET, RID_F_OFFSET + RID_F_LENGTH))));
127 parseTlvs(builder, ByteArray.cutBytes(bytes, TLVS_OFFSET));
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);
173 public byte[] serializeTlvs(final Tlvs tlvs) {
176 } else if (tlvs.getOrder() != null) {
177 return serializeTlv(tlvs.getOrder());
183 public int getObjectType() {
188 public int getObjectClass() {