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.PCEPDocumentedException;
  12 import org.opendaylight.protocol.pcep.impl.Util;
  13 import org.opendaylight.protocol.pcep.impl.message.AbstractObjectWithTlvsParser;
  14 import org.opendaylight.protocol.pcep.spi.TlvHandlerRegistry;
  15 import org.opendaylight.protocol.util.ByteArray;
  16 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.CloseObject;
  17 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.Object;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.ObjectHeader;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.Tlv;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.close.message.c.close.message.CClose;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.close.message.c.close.message.CCloseBuilder;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.close.object.Tlvs;
  23
  24 /**
  25  * Parser for {@link org.opendaylight.protocol.pcep.object.PCEPCloseObject PCEPCloseObject}
  26  */
  27 public class PCEPCloseObjectParser extends AbstractObjectWithTlvsParser<CCloseBuilder> {
  28
  29         public static final int CLASS = 15;
  30
  31         public static final int TYPE = 1;
  32
  33         /*
  34          * lengths of fields in bytes
  35          */
  36         public static final int FLAGS_F_LENGTH = 1;
  37         public static final int REASON_F_LENGTH = 1;
  38
  39         /*
  40          * offsets of fields in bytes
  41          */
  42         public static final int FLAGS_F_OFFSET = 2; // added reserved field of size 2 bytes
  43         public static final int REASON_F_OFFSET = FLAGS_F_OFFSET + FLAGS_F_LENGTH;
  44
  45         /*
  46          * total size of object in bytes
  47          */
  48         public static final int TLVS_OFFSET = REASON_F_OFFSET + REASON_F_LENGTH;
  49
  50         public PCEPCloseObjectParser(final TlvHandlerRegistry tlvReg) {
  51                 super(tlvReg);
  52         }
  53
  54         @Override
  55         public CloseObject parseObject(final ObjectHeader header, final byte[] bytes) throws PCEPDeserializerException, PCEPDocumentedException {
  56                 if (bytes == null) {
  57                         throw new IllegalArgumentException("Byte array is mandatory.");
  58                 }
  59
  60                 final CCloseBuilder builder = new CCloseBuilder();
  61
  62                 parseTlvs(builder, ByteArray.cutBytes(bytes, TLVS_OFFSET));
  63
  64                 builder.setIgnore(header.isIgnore());
  65                 builder.setProcessingRule(header.isProcessingRule());
  66
  67                 builder.setReason((short) (bytes[REASON_F_OFFSET] & 0xFF));
  68
  69                 return builder.build();
  70         }
  71
  72         @Override
  73         public void addTlv(final CCloseBuilder builder, final Tlv tlv) {
  74                 // No tlvs defined
  75         }
  76
  77         @Override
  78         public byte[] serializeObject(final Object object) {
  79                 if (!(object instanceof CloseObject)) {
  80                         throw new IllegalArgumentException("Wrong instance of PCEPObject. Passed " + object.getClass() + ". Needed CloseObject.");
  81                 }
  82
  83                 final CloseObject obj = (CloseObject) object;
  84
  85                 final byte[] tlvs = serializeTlvs(obj.getTlvs());
  86                 int tlvsLength = 0;
  87                 if (tlvs != null) {
  88                         tlvsLength = tlvs.length;
  89                 }
  90                 final byte[] retBytes = new byte[TLVS_OFFSET + tlvsLength + Util.getPadding(TLVS_OFFSET + tlvs.length, PADDED_TO)];
  91
  92                 if (tlvs != null) {
  93                         ByteArray.copyWhole(tlvs, retBytes, TLVS_OFFSET);
  94                 }
  95
  96                 final int reason = ((CClose) obj).getReason().intValue();
  97
  98                 retBytes[REASON_F_OFFSET] = (byte) reason;
  99
 100                 return retBytes;
 101         }
 102
 103         public byte[] serializeTlvs(final Tlvs tlvs) {
 104                 // No tlvs defined
 105                 return new byte[0];
 106         }
 107
 108         @Override
 109         public int getObjectType() {
 110                 return TYPE;
 111         }
 112
 113         @Override
 114         public int getObjectClass() {
 115                 return CLASS;
 116         }
 117 }