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.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.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 AbstractObjectWithTlvsParser<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 TlvHandlerRegistry tlvReg) {
  51                 super(tlvReg);
  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
  61                 final NotificationsBuilder builder = new NotificationsBuilder();
  62
  63                 parseTlvs(builder, ByteArray.cutBytes(bytes, TLVS_OFFSET));
  64
  65                 builder.setIgnore(header.isIgnore());
  66                 builder.setProcessingRule(header.isProcessingRule());
  67
  68                 builder.setType((short) (bytes[NT_F_OFFSET] & 0xFF));
  69                 builder.setValue((short) (bytes[NV_F_OFFSET] & 0xFF));
  70
  71                 return builder.build();
  72         }
  73
  74         @Override
  75         public void addTlv(final NotificationsBuilder builder, final Tlv tlv) {
  76                 if (tlv instanceof OverloadDurationTlv && builder.getType() == 2 && builder.getValue() == 1) {
  77                         builder.setTlvs(new TlvsBuilder().setOverloadDuration(
  78                                         new OverloadDurationBuilder().setDuration(((OverloadDurationTlv) tlv).getDuration()).build()).build());
  79                 }
  80         }
  81
  82         @Override
  83         public byte[] serializeObject(final Object object) {
  84                 if (!(object instanceof NotificationObject)) {
  85                         throw new IllegalArgumentException("Wrong instance of PCEPObject. Passed " + object.getClass() + ". Needed NotificationObject.");
  86                 }
  87
  88                 final NotificationObject notObj = (NotificationObject) object;
  89
  90                 final byte[] tlvs = serializeTlvs(notObj.getTlvs());
  91                 int tlvsLength = 0;
  92                 if (tlvs != null) {
  93                         tlvsLength = tlvs.length;
  94                 }
  95                 final byte[] retBytes = new byte[TLVS_OFFSET + tlvsLength + Util.getPadding(TLVS_OFFSET + tlvs.length, PADDED_TO)];
  96
  97                 if (tlvs != null) {
  98                         ByteArray.copyWhole(tlvs, retBytes, TLVS_OFFSET);
  99                 }
 100
 101                 retBytes[NT_F_OFFSET] = ByteArray.shortToBytes(notObj.getType())[1];
 102                 retBytes[NV_F_OFFSET] = ByteArray.shortToBytes(notObj.getValue())[1];
 103
 104                 return retBytes;
 105         }
 106
 107         public byte[] serializeTlvs(final Tlvs tlvs) {
 108                 if (tlvs.getOverloadDuration() != null) {
 109                         // FIXME : add
 110                         // return serializeTlv(new NoPathVectorBuilder().setFlags(tlvs.getNoPathVector()).build());
 111                 }
 112                 return null;
 113         }
 114
 115         @Override
 116         public int getObjectType() {
 117                 return TYPE;
 118         }
 119
 120         @Override
 121         public int getObjectClass() {
 122                 return CLASS;
 123         }
 124 }