pcep/impl/src/main/java/org/opendaylight/protocol/pcep/impl/object/PCEPEndPointsIPv4ObjectParser.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.object;
   9
  10 import org.opendaylight.protocol.concepts.IPv4Address;
  11 import org.opendaylight.protocol.pcep.PCEPDeserializerException;
  12 import org.opendaylight.protocol.pcep.PCEPDocumentedException;
  13 import org.opendaylight.protocol.pcep.PCEPObject;
  14 import org.opendaylight.protocol.pcep.impl.PCEPObjectParser;
  15 import org.opendaylight.protocol.pcep.object.PCEPEndPointsObject;
  16 import org.opendaylight.protocol.util.ByteArray;
  17
  18 /**
  19  * Parser for IPv4 {@link org.opendaylight.protocol.pcep.object.PCEPEndPointsObject
  20  * PCEPEndPointsObject}
  21  */
  22 public class PCEPEndPointsIPv4ObjectParser implements PCEPObjectParser {
  23
  24         /*
  25          * fields lengths and offsets for IPv4 in bytes
  26          */
  27         public static final int SRC4_F_LENGTH = 4;
  28         public static final int DEST4_F_LENGTH = 4;
  29
  30         public static final int SRC4_F_OFFSET = 0;
  31         public static final int DEST4_F_OFFSET = SRC4_F_OFFSET + SRC4_F_LENGTH;
  32
  33         @Override
  34         public PCEPObject parse(byte[] bytes, boolean processed, boolean ignored) throws PCEPDeserializerException, PCEPDocumentedException {
  35                 if (bytes == null)
  36                         throw new IllegalArgumentException("Array of bytes is mandatory");
  37                 if (bytes.length != SRC4_F_LENGTH + DEST4_F_LENGTH)
  38                         throw new PCEPDeserializerException("Wrong length of array of bytes.");
  39
  40                 //FIXME: create new constructor which allows processed parameter - needed for validation
  41                 return new PCEPEndPointsObject<IPv4Address>(
  42                                 new IPv4Address(ByteArray.subByte(bytes, SRC4_F_OFFSET, SRC4_F_LENGTH)),
  43                                 new IPv4Address(ByteArray.subByte(bytes, DEST4_F_OFFSET, DEST4_F_LENGTH)));
  44         }
  45
  46         @Override
  47         public byte[] put(PCEPObject obj) {
  48                 if (!(obj instanceof PCEPEndPointsObject))
  49                         throw new IllegalArgumentException("Wrong instance of PCEPObject. Passed " + obj.getClass() + ". Needed PCEPEndPointsObject.");
  50
  51                 final PCEPEndPointsObject<?> ePObj = (PCEPEndPointsObject<?>) obj;
  52
  53                 if (!(ePObj.getSourceAddress() instanceof IPv4Address))
  54                         throw new IllegalArgumentException("Wrong instance of NetworkAddress. Passed " + ePObj.getSourceAddress().getClass() + ". Needed IPv4Address");
  55
  56                 final byte[] retBytes = new byte[SRC4_F_LENGTH + DEST4_F_LENGTH];
  57                 ByteArray.copyWhole(((IPv4Address) ePObj.getSourceAddress()).getAddress(), retBytes, SRC4_F_OFFSET);
  58                 ByteArray.copyWhole(((IPv4Address) ePObj.getDestinationAddress()).getAddress(), retBytes, DEST4_F_OFFSET);
  59
  60                 return retBytes;
  61         }
  62 }