pcep/impl/src/main/java/org/opendaylight/protocol/pcep/impl/subobject/RROUnnumberedInterfaceSubobjectParser.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.RROSubobjectParser;
  12 import org.opendaylight.protocol.pcep.spi.RROSubobjectSerializer;
  13 import org.opendaylight.protocol.util.ByteArray;
  14 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.reported.route.object.Subobjects;
  15 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.reported.route.object.SubobjectsBuilder;
  16 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev130820.UnnumberedSubobject;
  17 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev130820.record.route.subobjects.subobject.type.UnnumberedBuilder;
  18
  19 import com.google.common.primitives.UnsignedInts;
  20
  21 /**
  22  * Parser for {@link org.opendaylight.protocol.pcep.subobject.RROUnnumberedInterfaceSubobject
  23  * RROUnnumberedInterfaceSubobject}
  24  */
  25 public class RROUnnumberedInterfaceSubobjectParser implements RROSubobjectParser, RROSubobjectSerializer {
  26
  27         public static final int TYPE = 4;
  28
  29         public static final int ROUTER_ID_NUMBER_LENGTH = 4;
  30         public static final int INTERFACE_ID_NUMBER_LENGTH = 4;
  31
  32         public static final int ROUTER_ID_NUMBER_OFFSET = 2; // added reserved field of size 2
  33         public static final int INTERFACE_ID_NUMBER_OFFSET = ROUTER_ID_NUMBER_OFFSET + ROUTER_ID_NUMBER_LENGTH;
  34
  35         public static final int CONTENT_LENGTH = INTERFACE_ID_NUMBER_OFFSET + INTERFACE_ID_NUMBER_LENGTH;
  36
  37         @Override
  38         public Subobjects parseSubobject(final byte[] buffer) 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                 final UnnumberedBuilder ubuilder = new UnnumberedBuilder();
  47                 ubuilder.setRouterId(ByteArray.bytesToLong(ByteArray.subByte(buffer, ROUTER_ID_NUMBER_OFFSET, ROUTER_ID_NUMBER_LENGTH)));
  48                 ubuilder.setInterfaceId(UnsignedInts.toLong(ByteArray.bytesToInt(ByteArray.subByte(buffer, INTERFACE_ID_NUMBER_OFFSET,
  49                                 INTERFACE_ID_NUMBER_LENGTH))));
  50                 builder.setSubobjectType(ubuilder.build());
  51                 return builder.build();
  52         }
  53
  54         @Override
  55         public byte[] serializeSubobject(final Subobjects subobject) {
  56                 if (!(subobject.getSubobjectType() instanceof UnnumberedSubobject))
  57                         throw new IllegalArgumentException("Unknown ReportedRouteSubobject instance. Passed " + subobject.getSubobjectType().getClass()
  58                                         + ". Needed UnnumberedSubobject.");
  59
  60                 byte[] retBytes;
  61                 retBytes = new byte[CONTENT_LENGTH];
  62                 final UnnumberedSubobject specObj = (UnnumberedSubobject) subobject.getSubobjectType();
  63
  64                 ByteArray.copyWhole(ByteArray.longToBytes(specObj.getRouterId()), retBytes, ROUTER_ID_NUMBER_OFFSET);
  65                 System.arraycopy(ByteArray.longToBytes(specObj.getInterfaceId()), Long.SIZE / Byte.SIZE - INTERFACE_ID_NUMBER_LENGTH, retBytes,
  66                                 INTERFACE_ID_NUMBER_OFFSET, INTERFACE_ID_NUMBER_LENGTH);
  67
  68                 return retBytes;
  69         }
  70
  71         @Override
  72         public int getType() {
  73                 return TYPE;
  74         }
  75 }