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.impl.object.XROSubobjectUtil;
  11 import org.opendaylight.protocol.pcep.spi.PCEPDeserializerException;
  12 import org.opendaylight.protocol.pcep.spi.XROSubobjectParser;
  13 import org.opendaylight.protocol.pcep.spi.XROSubobjectSerializer;
  14 import org.opendaylight.protocol.util.ByteArray;
  15 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.exclude.route.object.xro.Subobject;
  16 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.exclude.route.object.xro.SubobjectBuilder;
  17 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev130820.ExcludeRouteSubobjects.Attribute;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev130820.SrlgId;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev130820.SrlgSubobject;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev130820.basic.explicit.route.subobjects.subobject.type.SrlgCase;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev130820.basic.explicit.route.subobjects.subobject.type.SrlgCaseBuilder;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev130820.basic.explicit.route.subobjects.subobject.type.srlg._case.SrlgBuilder;
  23
  24 import com.google.common.primitives.UnsignedBytes;
  25
  26 /**
  27  * Parser for {@link SrlgCase}
  28  */
  29 public class XROSRLGSubobjectParser implements XROSubobjectParser, XROSubobjectSerializer {
  30
  31         public static final int TYPE = 34;
  32
  33         private static final int SRLG_ID_NUMBER_LENGTH = 4;
  34         private static final int ATTRIBUTE_LENGTH = 1;
  35
  36         private static final int SRLG_ID_NUMBER_OFFSET = 0;
  37         private static final int ATTRIBUTE_OFFSET = SRLG_ID_NUMBER_OFFSET + SRLG_ID_NUMBER_LENGTH;
  38
  39         private static final int CONTENT_LENGTH = SRLG_ID_NUMBER_LENGTH + ATTRIBUTE_LENGTH;
  40
  41         @Override
  42         public Subobject parseSubobject(final byte[] buffer, final boolean mandatory) throws PCEPDeserializerException {
  43                 if (buffer == null || buffer.length == 0) {
  44                         throw new IllegalArgumentException("Array of bytes is mandatory. Can't be null or empty.");
  45                 }
  46                 if (buffer.length != CONTENT_LENGTH) {
  47                         throw new PCEPDeserializerException("Wrong length of array of bytes. Passed: " + buffer.length + "; Expected: "
  48                                         + CONTENT_LENGTH + ".");
  49                 }
  50
  51                 final SubobjectBuilder builder = new SubobjectBuilder();
  52                 builder.setMandatory(mandatory);
  53                 builder.setAttribute(Attribute.Srlg);
  54                 builder.setSubobjectType(new SrlgCaseBuilder().setSrlg(
  55                                 new SrlgBuilder().setSrlgId(
  56                                                 new SrlgId(ByteArray.bytesToLong(ByteArray.subByte(buffer, SRLG_ID_NUMBER_OFFSET, SRLG_ID_NUMBER_LENGTH)))).build()).build());
  57                 return builder.build();
  58         }
  59
  60         @Override
  61         public byte[] serializeSubobject(final Subobject subobject) {
  62                 if (!(subobject.getSubobjectType() instanceof SrlgCase)) {
  63                         throw new IllegalArgumentException("Unknown PCEPXROSubobject instance. Passed " + subobject.getSubobjectType().getClass()
  64                                         + ". Needed SrlgCase.");
  65                 }
  66
  67                 byte[] retBytes;
  68                 retBytes = new byte[CONTENT_LENGTH];
  69                 final SrlgSubobject specObj = ((SrlgCase) subobject.getSubobjectType()).getSrlg();
  70
  71                 ByteArray.copyWhole(ByteArray.longToBytes(specObj.getSrlgId().getValue(), SRLG_ID_NUMBER_LENGTH), retBytes, SRLG_ID_NUMBER_OFFSET);
  72                 retBytes[ATTRIBUTE_OFFSET] = UnsignedBytes.checkedCast(subobject.getAttribute().getIntValue());
  73
  74                 return XROSubobjectUtil.formatSubobject(TYPE, subobject.isMandatory(), retBytes);
  75         }
  76
  77         @Override
  78         public int getType() {
  79                 return TYPE;
  80         }
  81 }