pcep/impl/src/main/java/org/opendaylight/protocol/pcep/impl/object/PCEPNotificationObjectParser.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.spi.AbstractObjectParser;
  14 import org.opendaylight.protocol.pcep.spi.HandlerRegistry;
  15 import org.opendaylight.protocol.util.ByteArray;
  16 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.NotificationObject;
  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.OverloadDurationTlv;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.Tlv;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.notification.object.Tlvs;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.notification.object.TlvsBuilder;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.notification.object.tlvs.OverloadDurationBuilder;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.pcntf.message.pcntf.message.notifications.NotificationsBuilder;
  25
  26 /**
  27  * Parser for {@link NotificationObject}
  28  */
  29 public class PCEPNotificationObjectParser extends AbstractObjectParser<NotificationsBuilder> {
  30
  31         public static final int CLASS = 12;
  32
  33         public static final int TYPE = 1;
  34
  35         /*
  36          * lengths of fields
  37          */
  38         public static final int FLAGS_F_LENGTH = 1;
  39         public static final int NT_F_LENGTH = 1;
  40         public static final int NV_F_LENGTH = 1;
  41
  42         /*
  43          * offsets of fields
  44          */
  45         public static final int FLAGS_F_OFFSET = 1; // added reserved filed of size 1
  46         public static final int NT_F_OFFSET = FLAGS_F_OFFSET + FLAGS_F_LENGTH;
  47         public static final int NV_F_OFFSET = NT_F_OFFSET + NT_F_LENGTH;
  48         public static final int TLVS_OFFSET = NV_F_OFFSET + NV_F_LENGTH;
  49
  50         public PCEPNotificationObjectParser(final HandlerRegistry registry) {
  51                 super(registry);
  52         }
  53
  54         @Override
  55         public NotificationObject parseObject(final ObjectHeader header, final byte[] bytes) throws PCEPDeserializerException,
  56                         PCEPDocumentedException {
  57                 if (bytes == null || bytes.length == 0)
  58                         throw new IllegalArgumentException("Array of bytes is mandatory. Can't be null or empty.");
  59
  60                 final NotificationsBuilder builder = new NotificationsBuilder();
  61
  62                 parseTlvs(builder, ByteArray.cutBytes(bytes, TLVS_OFFSET));
  63
  64                 builder.setIgnore(header.isIgnore());
  65                 builder.setProcessingRule(header.isProcessingRule());
  66
  67                 builder.setType((short) (bytes[NT_F_OFFSET] & 0xFF));
  68                 builder.setValue((short) (bytes[NV_F_OFFSET] & 0xFF));
  69
  70                 return builder.build();
  71         }
  72
  73         @Override
  74         public void addTlv(final NotificationsBuilder builder, final Tlv tlv) {
  75                 if (tlv instanceof OverloadDurationTlv && builder.getType() == 2 && builder.getValue() == 1)
  76                         builder.setTlvs(new TlvsBuilder().setOverloadDuration(
  77                                         new OverloadDurationBuilder().setDuration(((OverloadDurationTlv) tlv).getDuration()).build()).build());
  78         }
  79
  80         @Override
  81         public byte[] serializeObject(final Object object) {
  82                 if (!(object instanceof NotificationObject))
  83                         throw new IllegalArgumentException("Wrong instance of PCEPObject. Passed " + object.getClass() + ". Needed NotificationObject.");
  84
  85                 final NotificationObject notObj = (NotificationObject) object;
  86
  87                 final byte[] tlvs = serializeTlvs(notObj.getTlvs());
  88                 int tlvsLength = 0;
  89                 if (tlvs != null)
  90                         tlvsLength = tlvs.length;
  91                 final byte[] retBytes = new byte[TLVS_OFFSET + tlvsLength + Util.getPadding(TLVS_OFFSET + tlvs.length, PADDED_TO)];
  92
  93                 if (tlvs != null)
  94                         ByteArray.copyWhole(tlvs, retBytes, TLVS_OFFSET);
  95
  96                 retBytes[NT_F_OFFSET] = ByteArray.shortToBytes(notObj.getType())[1];
  97                 retBytes[NV_F_OFFSET] = ByteArray.shortToBytes(notObj.getValue())[1];
  98
  99                 return retBytes;
 100         }
 101
 102         public byte[] serializeTlvs(final Tlvs tlvs) {
 103                 if (tlvs.getOverloadDuration() != null) {
 104                         // FIXME : add
 105                         // return serializeTlv(new NoPathVectorBuilder().setFlags(tlvs.getNoPathVector()).build());
 106                 }
 107                 return null;
 108         }
 109
 110         @Override
 111         public int getObjectType() {
 112                 return TYPE;
 113         }
 114
 115         @Override
 116         public int getObjectClass() {
 117                 return CLASS;
 118         }
 119 }