pcep/impl/src/main/java/org/opendaylight/protocol/pcep/impl/subobject/XROSRLGSubobjectParser.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.PCEPDeserializerException;
  11 import org.opendaylight.protocol.pcep.spi.XROSubobjectParser;
  12 import org.opendaylight.protocol.pcep.spi.XROSubobjectSerializer;
  13 import org.opendaylight.protocol.util.ByteArray;
  14 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.exclude.route.object.Subobjects;
  15 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.exclude.route.object.SubobjectsBuilder;
  16 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev130820.ExcludeRouteSubobjects.Attribute;
  17 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev130820.SrlgId;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev130820.SrlgSubobject;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev130820.basic.explicit.route.subobjects.subobject.type.SrlgBuilder;
  20
  21 /**
  22  * Parser for {@link SrlgSubobject}
  23  */
  24 public class XROSRLGSubobjectParser implements XROSubobjectParser, XROSubobjectSerializer {
  25
  26         public static final int TYPE = 34;
  27
  28         public static final int SRLG_ID_NUMBER_LENGTH = 4;
  29         public static final int ATTRIBUTE_LENGTH = 1;
  30
  31         public static final int SRLG_ID_NUMBER_OFFSET = 0;
  32         public static final int ATTRIBUTE_OFFSET = SRLG_ID_NUMBER_OFFSET + SRLG_ID_NUMBER_LENGTH + 1; // added reserved
  33                                                                                                                                                                                                         // field of size 1
  34
  35         public static final int CONTENT_LENGTH = ATTRIBUTE_OFFSET + ATTRIBUTE_LENGTH;
  36
  37         @Override
  38         public Subobjects parseSubobject(final byte[] buffer, final boolean mandatory) throws PCEPDeserializerException {
  39                 if (buffer == null || buffer.length == 0)
  40                         throw new IllegalArgumentException("Array of bytes is mandatory. Can't be null or empty.");
  41                 if (buffer.length != CONTENT_LENGTH)
  42                         throw new PCEPDeserializerException("Wrong length of array of bytes. Passed: " + buffer.length + "; Expected: "
  43                                         + CONTENT_LENGTH + ".");
  44
  45                 final SubobjectsBuilder builder = new SubobjectsBuilder();
  46                 builder.setMandatory(mandatory);
  47                 builder.setAttribute(Attribute.Srlg);
  48                 builder.setSubobjectType(new SrlgBuilder().setSrlgId(
  49                                 new SrlgId(ByteArray.bytesToLong(ByteArray.subByte(buffer, SRLG_ID_NUMBER_OFFSET, SRLG_ID_NUMBER_LENGTH)))).build());
  50                 return builder.build();
  51         }
  52
  53         @Override
  54         public byte[] serializeSubobject(final Subobjects subobject) {
  55                 if (!(subobject.getSubobjectType() instanceof SrlgSubobject))
  56                         throw new IllegalArgumentException("Unknown PCEPXROSubobject instance. Passed " + subobject.getSubobjectType().getClass()
  57                                         + ". Needed SrlgSubobject.");
  58
  59                 byte[] retBytes;
  60                 retBytes = new byte[CONTENT_LENGTH];
  61                 final SrlgSubobject specObj = (SrlgSubobject) subobject.getSubobjectType();
  62
  63                 ByteArray.copyWhole(ByteArray.longToBytes(specObj.getSrlgId().getValue()), retBytes, SRLG_ID_NUMBER_OFFSET);
  64                 retBytes[ATTRIBUTE_OFFSET] = (byte) subobject.getAttribute().getIntValue();
  65
  66                 return retBytes;
  67         }
  68
  69         @Override
  70         public int getType() {
  71                 return TYPE;
  72         }
  73 }