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.PCEPDeserializerException;
15 import org.opendaylight.protocol.pcep.PCEPObject;
16 import org.opendaylight.protocol.pcep.impl.PCEPObjectParser;
17 import org.opendaylight.protocol.pcep.impl.PCEPTlvParser;
18 import org.opendaylight.protocol.pcep.object.PCEPRequestParameterObject;
19 import org.opendaylight.protocol.util.ByteArray;
22 * Parser for {@link org.opendaylight.protocol.pcep.object.PCEPRequestParameterObject
23 * PCEPRequestParameterObject}
26 public class PCEPRequestParameterObjectParser implements PCEPObjectParser {
29 * lengths of fields in bytes
31 public static final int FLAGS_PRI_MF_LENGTH = 4; //multi-field
32 public static final int RID_F_LENGTH = 4;
35 * lengths of subfields inside multi-field in bits
37 public static final int FLAGS_SF_LENGTH = 29;
38 public static final int PRI_SF_LENGTH = 3;
41 * offsets of field in bytes
44 public static final int FLAGS_PRI_MF_OFFSET = 0;
45 public static final int RID_F_OFFSET = FLAGS_PRI_MF_OFFSET + FLAGS_PRI_MF_LENGTH;
46 public static final int TLVS_OFFSET = RID_F_OFFSET + RID_F_LENGTH;
49 * offsets of subfields inside multi-field in bits
52 public static final int FLAGS_SF_OFFSET = 0;
53 public static final int PRI_SF_OFFSET = FLAGS_SF_OFFSET + FLAGS_SF_LENGTH;
56 * flags offsets inside flags sub-field in bits
59 private static final int O_FLAG_OFFSET = 26;
60 private static final int B_FLAG_OFFSET = 27;
61 private static final int R_FLAG_OFFSET = 28;
64 * GCO extension flags offsets inside flags sub-field in bits
66 private static final int M_FLAG_OFFSET = 21;
67 private static final int D_FLAG_OFFSET = 22;
70 * OF extension flags offsets inside flags sub.field in bits
73 private static int S_FLAG_OFFSET = 24; //Supply OF on response
78 private static int F_FLAG_OFFSET = 18;
80 private static int N_FLAG_OFFSET = 19;
82 private static int E_FLAG_OFFSET = 20;
85 public PCEPObject parse(byte[] bytes, boolean processed, boolean ignored) throws PCEPDeserializerException {
86 if (bytes == null || bytes.length == 0)
87 throw new IllegalArgumentException("Array of bytes is mandatory. Can't be null or empty.");
89 if (bytes.length < TLVS_OFFSET)
90 throw new PCEPDeserializerException("Wrong length of array of bytes. Passed: " + bytes.length + "; Expected: >=" + TLVS_OFFSET + ".");
92 final BitSet flags = ByteArray.bytesToBitSet(Arrays.copyOfRange(bytes, FLAGS_PRI_MF_OFFSET, FLAGS_PRI_MF_OFFSET + FLAGS_PRI_MF_LENGTH));
94 priority |= flags.get(PRI_SF_OFFSET + 2) ? 1 : 0;
95 priority |= (flags.get(PRI_SF_OFFSET + 1) ? 1 : 0) << 1;
96 priority |= (flags.get(PRI_SF_OFFSET) ? 1 : 0) << 2;
98 return new PCEPRequestParameterObject(flags.get(O_FLAG_OFFSET), flags.get(B_FLAG_OFFSET), flags.get(R_FLAG_OFFSET), flags.get(M_FLAG_OFFSET),
99 flags.get(D_FLAG_OFFSET), flags.get(S_FLAG_OFFSET), flags.get(F_FLAG_OFFSET), flags.get(N_FLAG_OFFSET), flags.get(E_FLAG_OFFSET), priority,
100 ByteArray.bytesToLong(Arrays.copyOfRange(bytes, RID_F_OFFSET, RID_F_OFFSET + RID_F_LENGTH)), PCEPTlvParser.parse(ByteArray.cutBytes(bytes,
101 TLVS_OFFSET)), processed, ignored);
105 public byte[] put(PCEPObject obj) {
106 if (!(obj instanceof PCEPRequestParameterObject))
107 throw new IllegalArgumentException("Wrong instance of PCEPObject. Passed " + obj.getClass() + ". Needed PCEPRequestParameterObject.");
109 final PCEPRequestParameterObject rPObj = (PCEPRequestParameterObject) obj;
111 final BitSet flags_priority = new BitSet(FLAGS_PRI_MF_LENGTH * Byte.SIZE);
113 flags_priority.set(R_FLAG_OFFSET, rPObj.isReoptimized());
114 flags_priority.set(B_FLAG_OFFSET, rPObj.isBidirectional());
115 flags_priority.set(O_FLAG_OFFSET, rPObj.isLoose());
116 flags_priority.set(M_FLAG_OFFSET, rPObj.isMakeBeforeBreak());
117 flags_priority.set(D_FLAG_OFFSET, rPObj.isReportRequestOrder());
118 flags_priority.set(S_FLAG_OFFSET, rPObj.isSuplyOFOnResponse());
119 flags_priority.set(F_FLAG_OFFSET, rPObj.isFragmentation());
120 flags_priority.set(N_FLAG_OFFSET, rPObj.isP2mp());
121 flags_priority.set(E_FLAG_OFFSET, rPObj.isEroCompression());
123 flags_priority.set(PRI_SF_OFFSET, (rPObj.getPriority() & 1 << 2) != 0);
124 flags_priority.set(PRI_SF_OFFSET + 1, (rPObj.getPriority() & 1 << 1) != 0);
125 flags_priority.set(PRI_SF_OFFSET + 2, (rPObj.getPriority() & 1) != 0);
127 final byte[] tlvs = PCEPTlvParser.put(rPObj.getTlvs());
128 final byte[] retBytes = new byte[TLVS_OFFSET + tlvs.length];
129 ByteArray.copyWhole(tlvs, retBytes, TLVS_OFFSET);
130 ByteArray.copyWhole(ByteArray.bitSetToBytes(flags_priority, FLAGS_PRI_MF_LENGTH), retBytes, FLAGS_PRI_MF_OFFSET);
131 ByteArray.copyWhole(ByteArray.subByte(ByteArray.longToBytes(rPObj.getRequestID()), (Long.SIZE / Byte.SIZE) - RID_F_LENGTH, RID_F_LENGTH), retBytes,