pcep/impl/src/main/java/org/opendaylight/protocol/pcep/impl/object/PCEPCloseObjectParser.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.pcep.PCEPDeserializerException;
  11 import org.opendaylight.protocol.pcep.spi.TlvHandlerRegistry;
  12 import org.opendaylight.protocol.util.ByteArray;
  13 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.Object;
  14 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.ObjectHeader;
  15 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.Tlv;
  16 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.close.object.CClose;
  17 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.close.object.CCloseBuilder;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.close.object.c.close.Tlvs;
  19
  20 import com.google.common.primitives.UnsignedBytes;
  21
  22 /**
  23  * Parser for {@link org.opendaylight.protocol.pcep.object.PCEPCloseObject PCEPCloseObject}
  24  */
  25 public class PCEPCloseObjectParser extends AbstractObjectWithTlvsParser<CCloseBuilder> {
  26
  27         public static final int CLASS = 15;
  28
  29         public static final int TYPE = 1;
  30
  31         /*
  32          * lengths of fields in bytes
  33          */
  34         private static final int FLAGS_F_LENGTH = 1;
  35         private static final int REASON_F_LENGTH = 1;
  36
  37         /*
  38          * offsets of fields in bytes
  39          */
  40         private static final int FLAGS_F_OFFSET = 2;
  41         private static final int REASON_F_OFFSET = FLAGS_F_OFFSET + FLAGS_F_LENGTH;
  42
  43         /*
  44          * total size of object in bytes
  45          */
  46         private static final int TLVS_OFFSET = REASON_F_OFFSET + REASON_F_LENGTH;
  47
  48         public PCEPCloseObjectParser(final TlvHandlerRegistry tlvReg) {
  49                 super(tlvReg);
  50         }
  51
  52         @Override
  53         public CClose parseObject(final ObjectHeader header, final byte[] bytes) throws PCEPDeserializerException {
  54                 if (bytes == null) {
  55                         throw new IllegalArgumentException("Byte array is mandatory.");
  56                 }
  57                 final CCloseBuilder builder = new CCloseBuilder();
  58                 parseTlvs(builder, ByteArray.cutBytes(bytes, TLVS_OFFSET));
  59                 builder.setIgnore(header.isIgnore());
  60                 builder.setProcessingRule(header.isProcessingRule());
  61                 builder.setReason((short) UnsignedBytes.toInt(bytes[REASON_F_OFFSET]));
  62                 return builder.build();
  63         }
  64
  65         @Override
  66         public void addTlv(final CCloseBuilder builder, final Tlv tlv) {
  67                 // No tlvs defined
  68         }
  69
  70         @Override
  71         public byte[] serializeObject(final Object object) {
  72                 if (!(object instanceof CClose)) {
  73                         throw new IllegalArgumentException("Wrong instance of PCEPObject. Passed " + object.getClass() + ". Needed CloseObject.");
  74                 }
  75                 final CClose obj = (CClose) object;
  76
  77                 final byte[] tlvs = serializeTlvs(obj.getTlvs());
  78                 int tlvsLength = 0;
  79                 if (tlvs != null) {
  80                         tlvsLength = tlvs.length;
  81                 }
  82                 final byte[] retBytes = new byte[TLVS_OFFSET + tlvsLength + getPadding(TLVS_OFFSET + tlvs.length, PADDED_TO)];
  83
  84                 if (tlvs != null) {
  85                         ByteArray.copyWhole(tlvs, retBytes, TLVS_OFFSET);
  86                 }
  87                 retBytes[REASON_F_OFFSET] = UnsignedBytes.checkedCast(obj.getReason());
  88                 return retBytes;
  89         }
  90
  91         public byte[] serializeTlvs(final Tlvs tlvs) {
  92                 // No tlvs defined
  93                 return new byte[0];
  94         }
  95
  96         @Override
  97         public int getObjectType() {
  98                 return TYPE;
  99         }
 100
 101         @Override
 102         public int getObjectClass() {
 103                 return CLASS;
 104         }
 105 }