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.xro.Subobjects;
  15 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.exclude.route.object.xro.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 import com.google.common.primitives.UnsignedBytes;
  22
  23 /**
  24  * Parser for {@link SrlgSubobject}
  25  */
  26 public class XROSRLGSubobjectParser implements XROSubobjectParser, XROSubobjectSerializer {
  27
  28         public static final int TYPE = 34;
  29
  30         private static final int SRLG_ID_NUMBER_LENGTH = 4;
  31         private static final int ATTRIBUTE_LENGTH = 1;
  32
  33         private static final int SRLG_ID_NUMBER_OFFSET = 0;
  34         private static final int ATTRIBUTE_OFFSET = SRLG_ID_NUMBER_OFFSET + SRLG_ID_NUMBER_LENGTH;
  35
  36         private static final int CONTENT_LENGTH = SRLG_ID_NUMBER_LENGTH + ATTRIBUTE_LENGTH;
  37
  38         @Override
  39         public Subobjects parseSubobject(final byte[] buffer, final boolean mandatory) throws PCEPDeserializerException {
  40                 if (buffer == null || buffer.length == 0) {
  41                         throw new IllegalArgumentException("Array of bytes is mandatory. Can't be null or empty.");
  42                 }
  43                 if (buffer.length != CONTENT_LENGTH) {
  44                         throw new PCEPDeserializerException("Wrong length of array of bytes. Passed: " + buffer.length + "; Expected: "
  45                                         + CONTENT_LENGTH + ".");
  46                 }
  47
  48                 final SubobjectsBuilder builder = new SubobjectsBuilder();
  49                 builder.setMandatory(mandatory);
  50                 builder.setAttribute(Attribute.Srlg);
  51                 builder.setSubobjectType(new SrlgBuilder().setSrlgId(
  52                                 new SrlgId(ByteArray.bytesToLong(ByteArray.subByte(buffer, SRLG_ID_NUMBER_OFFSET, SRLG_ID_NUMBER_LENGTH)))).build());
  53                 return builder.build();
  54         }
  55
  56         @Override
  57         public byte[] serializeSubobject(final Subobjects subobject) {
  58                 if (!(subobject.getSubobjectType() instanceof SrlgSubobject)) {
  59                         throw new IllegalArgumentException("Unknown PCEPXROSubobject instance. Passed " + subobject.getSubobjectType().getClass()
  60                                         + ". Needed SrlgSubobject.");
  61                 }
  62
  63                 byte[] retBytes;
  64                 retBytes = new byte[CONTENT_LENGTH];
  65                 final SrlgSubobject specObj = (SrlgSubobject) subobject.getSubobjectType();
  66
  67                 ByteArray.copyWhole(ByteArray.subByte(ByteArray.longToBytes(specObj.getSrlgId().getValue()), 4, SRLG_ID_NUMBER_LENGTH), retBytes,
  68                                 SRLG_ID_NUMBER_OFFSET);
  69                 retBytes[ATTRIBUTE_OFFSET] = UnsignedBytes.checkedCast(subobject.getAttribute().getIntValue());
  70
  71                 return retBytes;
  72         }
  73
  74         @Override
  75         public int getType() {
  76                 return TYPE;
  77         }
  78 }