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