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.impl.object;
10 import java.util.BitSet;
12 import org.opendaylight.protocol.pcep.PCEPDeserializerException;
13 import org.opendaylight.protocol.pcep.PCEPObject;
14 import org.opendaylight.protocol.pcep.impl.PCEPObjectParser;
15 import org.opendaylight.protocol.pcep.impl.PCEPTlvParser;
16 import org.opendaylight.protocol.pcep.object.PCEPLspaObject;
17 import org.opendaylight.protocol.util.ByteArray;
18 import com.google.common.primitives.UnsignedInts;
21 * Parser for {@link org.opendaylight.protocol.pcep.object.PCEPLspaObject PCEPLspaObject}
23 public class PCEPLspaObjectParser implements PCEPObjectParser {
26 * lenghts of fields in bytes
28 public static final int EXC_ANY_F_LENGTH = 4;
29 public static final int INC_ANY_F_LENGTH = 4;
30 public static final int INC_ALL_F_LENGTH = 4;
31 public static final int SET_PRIO_F_LENGTH = 1;
32 public static final int HOLD_PRIO_F_LENGTH = 1;
33 public static final int FLAGS_F_LENGTH = 1;
36 * offsets of flags inside flags field in bits
38 public static final int S_FLAG_OFFSET = 6;
39 public static final int L_FLAG_OFFSET = 7;
42 * offsets of fields in bytes
44 public static final int EXC_ANY_F_OFFSET = 0;
45 public static final int INC_ANY_F_OFFSET = EXC_ANY_F_OFFSET + EXC_ANY_F_LENGTH;
46 public static final int INC_ALL_F_OFFSET = INC_ANY_F_OFFSET + INC_ANY_F_LENGTH;
47 public static final int SET_PRIO_F_OFFSET = INC_ALL_F_OFFSET + INC_ALL_F_LENGTH;
48 public static final int HOLD_PRIO_F_OFFSET = SET_PRIO_F_OFFSET + SET_PRIO_F_LENGTH;
49 public static final int FLAGS_F_OFFSET = HOLD_PRIO_F_OFFSET + HOLD_PRIO_F_LENGTH;
50 public static final int TLVS_F_OFFSET = FLAGS_F_OFFSET + FLAGS_F_LENGTH + 1; //added reserved field of length 1B
53 public PCEPObject parse(byte[] bytes, boolean processed, boolean ignored) throws PCEPDeserializerException {
55 throw new IllegalArgumentException("Bytes array is mandatory.");
57 final BitSet flags = ByteArray.bytesToBitSet(ByteArray.subByte(bytes, FLAGS_F_OFFSET, FLAGS_F_LENGTH));
59 return new PCEPLspaObject(UnsignedInts.toLong(ByteArray.bytesToInt(ByteArray.subByte(bytes, EXC_ANY_F_OFFSET, EXC_ANY_F_LENGTH))),
60 UnsignedInts.toLong(ByteArray.bytesToInt(ByteArray.subByte(bytes, INC_ANY_F_OFFSET, INC_ANY_F_LENGTH))), UnsignedInts.toLong(ByteArray
61 .bytesToInt(ByteArray.subByte(bytes, INC_ALL_F_OFFSET, INC_ALL_F_LENGTH))), (short) (bytes[SET_PRIO_F_OFFSET] & 0xFF),
62 (short) (bytes[HOLD_PRIO_F_OFFSET] & 0xFF), flags.get(S_FLAG_OFFSET), flags.get(L_FLAG_OFFSET), PCEPTlvParser.parse(ByteArray.cutBytes(bytes, TLVS_F_OFFSET)), processed,
67 public byte[] put(PCEPObject obj) {
68 if (!(obj instanceof PCEPLspaObject))
69 throw new IllegalArgumentException("Wrong instance of PCEPObject. Passed " + obj.getClass() + ". Needed PCEPLspaObject.");
71 final PCEPLspaObject lspaObj = (PCEPLspaObject) obj;
73 final byte[] tlvs = PCEPTlvParser.put(lspaObj.getTlvs());
74 final byte[] retBytes = new byte[TLVS_F_OFFSET + tlvs.length];
75 ByteArray.copyWhole(tlvs, retBytes, TLVS_F_OFFSET);
77 System.arraycopy(ByteArray.longToBytes(lspaObj.getExcludeAny()), 4, retBytes, EXC_ANY_F_OFFSET, EXC_ANY_F_LENGTH);
78 System.arraycopy(ByteArray.longToBytes(lspaObj.getIncludeAny()), 4, retBytes, INC_ANY_F_OFFSET, INC_ANY_F_LENGTH);
79 System.arraycopy(ByteArray.longToBytes(lspaObj.getIncludeAll()), 4, retBytes, INC_ALL_F_OFFSET, INC_ALL_F_LENGTH);
80 retBytes[SET_PRIO_F_OFFSET] = ByteArray.shortToBytes(lspaObj.getSetupPriority())[Short.SIZE / Byte.SIZE - 1];
81 retBytes[HOLD_PRIO_F_OFFSET] = ByteArray.shortToBytes(lspaObj.getHoldingPriority())[Short.SIZE / Byte.SIZE - 1];
83 final BitSet flags = new BitSet(FLAGS_F_LENGTH * Byte.SIZE);
84 flags.set(S_FLAG_OFFSET, lspaObj.isStandByPath());
85 flags.set(L_FLAG_OFFSET, lspaObj.isLocalProtected());
86 ByteArray.copyWhole(ByteArray.bitSetToBytes(flags, FLAGS_F_LENGTH), retBytes, FLAGS_F_OFFSET);