pcep/impl/src/main/java/org/opendaylight/protocol/pcep/impl/subobject/WavebandSwitchingLabelParser.java

   1 /*
   2  * Copyright (c) 2013 Cisco Systems, Inc. and others.  All rights reserved.
   3  *
   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
   7  */
   8 package org.opendaylight.protocol.pcep.impl.subobject;
   9
  10 import org.opendaylight.protocol.pcep.spi.LabelParser;
  11 import org.opendaylight.protocol.pcep.spi.LabelSerializer;
  12 import org.opendaylight.protocol.pcep.spi.LabelUtil;
  13 import org.opendaylight.protocol.pcep.spi.PCEPDeserializerException;
  14 import org.opendaylight.protocol.util.ByteArray;
  15 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev130820.label.subobject.LabelType;
  16 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev130820.label.subobject.label.type.WavebandSwitchingLabelCase;
  17 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev130820.label.subobject.label.type.WavebandSwitchingLabelCaseBuilder;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev130820.label.subobject.label.type.waveband.switching.label._case.WavebandSwitchingLabel;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev130820.label.subobject.label.type.waveband.switching.label._case.WavebandSwitchingLabelBuilder;
  20
  21 /**
  22  * Parser for {@link WavebandSwitchingLabelCase}
  23  */
  24 public class WavebandSwitchingLabelParser implements LabelParser, LabelSerializer {
  25
  26         public static final int CTYPE = 3;
  27
  28         private static final int WAVEB_F_LENGTH = 4;
  29         private static final int START_F_LENGTH = 4;
  30         private static final int END_F_LENGTH = 4;
  31
  32         private static final int CONTENT_LENGTH = WAVEB_F_LENGTH + START_F_LENGTH + END_F_LENGTH;
  33
  34         @Override
  35         public LabelType parseLabel(final byte[] buffer) throws PCEPDeserializerException {
  36                 if (buffer == null || buffer.length == 0) {
  37                         throw new IllegalArgumentException("Array of bytes is mandatory. Can't be null or empty.");
  38                 }
  39                 if (buffer.length != CONTENT_LENGTH) {
  40                         throw new PCEPDeserializerException("Wrong length of array of bytes. Passed: " + buffer.length + "; Expected: "
  41                                         + CONTENT_LENGTH + ".");
  42                 }
  43                 final WavebandSwitchingLabelBuilder builder = new WavebandSwitchingLabelBuilder();
  44                 int byteOffset = 0;
  45                 builder.setWavebandId(ByteArray.bytesToLong(ByteArray.subByte(buffer, byteOffset, WAVEB_F_LENGTH)));
  46                 byteOffset += WAVEB_F_LENGTH;
  47                 builder.setStartLabel(ByteArray.bytesToLong(ByteArray.subByte(buffer, byteOffset, START_F_LENGTH)));
  48                 byteOffset += START_F_LENGTH;
  49                 builder.setEndLabel(ByteArray.bytesToLong(ByteArray.subByte(buffer, byteOffset, END_F_LENGTH)));
  50                 return new WavebandSwitchingLabelCaseBuilder().setWavebandSwitchingLabel(builder.build()).build();
  51         }
  52
  53         @Override
  54         public byte[] serializeLabel(final boolean unidirectional, final boolean global, final LabelType subobject) {
  55                 if (!(subobject instanceof WavebandSwitchingLabelCase)) {
  56                         throw new IllegalArgumentException("Unknown Label Subobject instance. Passed " + subobject.getClass()
  57                                         + ". Needed WavebandSwitchingLabelCase.");
  58                 }
  59                 final byte[] retBytes = new byte[CONTENT_LENGTH];
  60                 final WavebandSwitchingLabel obj = ((WavebandSwitchingLabelCase) subobject).getWavebandSwitchingLabel();
  61                 System.arraycopy(ByteArray.intToBytes(obj.getWavebandId().intValue(), WAVEB_F_LENGTH), 0, retBytes, 0, WAVEB_F_LENGTH);
  62                 System.arraycopy(ByteArray.intToBytes(obj.getStartLabel().intValue(), START_F_LENGTH), 0, retBytes, WAVEB_F_LENGTH, START_F_LENGTH);
  63                 System.arraycopy(ByteArray.intToBytes(obj.getEndLabel().intValue(), END_F_LENGTH), 0, retBytes, WAVEB_F_LENGTH + START_F_LENGTH,
  64                                 END_F_LENGTH);
  65                 return LabelUtil.formatLabel(CTYPE, unidirectional, global, retBytes);
  66         }
  67 }