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.SubobjectHandlerRegistry;
  15 import org.opendaylight.protocol.pcep.spi.TlvHandlerRegistry;
  16 import org.opendaylight.protocol.util.ByteArray;
  17 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.NotificationObject;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.Object;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.ObjectHeader;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.OverloadDurationTlv;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.Tlv;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.notification.object.Tlvs;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.notification.object.TlvsBuilder;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.notification.object.tlvs.OverloadDurationBuilder;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.pcntf.message.pcntf.message.notifications.NotificationsBuilder;
  26
  27 /**
  28  * Parser for {@link NotificationObject}
  29  */
  30 public class PCEPNotificationObjectParser extends AbstractObjectParser<NotificationsBuilder> {
  31
  32         public static final int CLASS = 12;
  33
  34         public static final int TYPE = 1;
  35
  36         /*
  37          * lengths of fields
  38          */
  39         public static final int FLAGS_F_LENGTH = 1;
  40         public static final int NT_F_LENGTH = 1;
  41         public static final int NV_F_LENGTH = 1;
  42
  43         /*
  44          * offsets of fields
  45          */
  46         public static final int FLAGS_F_OFFSET = 1; // added reserved filed of size 1
  47         public static final int NT_F_OFFSET = FLAGS_F_OFFSET + FLAGS_F_LENGTH;
  48         public static final int NV_F_OFFSET = NT_F_OFFSET + NT_F_LENGTH;
  49         public static final int TLVS_OFFSET = NV_F_OFFSET + NV_F_LENGTH;
  50
  51         public PCEPNotificationObjectParser(final SubobjectHandlerRegistry subobjReg, final TlvHandlerRegistry tlvReg) {
  52                 super(subobjReg, tlvReg);
  53         }
  54
  55         @Override
  56         public NotificationObject parseObject(final ObjectHeader header, final byte[] bytes) throws PCEPDeserializerException,
  57         PCEPDocumentedException {
  58                 if (bytes == null || bytes.length == 0) {
  59                         throw new IllegalArgumentException("Array of bytes is mandatory. Can't be null or empty.");
  60                 }
  61
  62                 final NotificationsBuilder builder = new NotificationsBuilder();
  63
  64                 parseTlvs(builder, ByteArray.cutBytes(bytes, TLVS_OFFSET));
  65
  66                 builder.setIgnore(header.isIgnore());
  67                 builder.setProcessingRule(header.isProcessingRule());
  68
  69                 builder.setType((short) (bytes[NT_F_OFFSET] & 0xFF));
  70                 builder.setValue((short) (bytes[NV_F_OFFSET] & 0xFF));
  71
  72                 return builder.build();
  73         }
  74
  75         @Override
  76         public void addTlv(final NotificationsBuilder builder, final Tlv tlv) {
  77                 if (tlv instanceof OverloadDurationTlv && builder.getType() == 2 && builder.getValue() == 1) {
  78                         builder.setTlvs(new TlvsBuilder().setOverloadDuration(
  79                                         new OverloadDurationBuilder().setDuration(((OverloadDurationTlv) tlv).getDuration()).build()).build());
  80                 }
  81         }
  82
  83         @Override
  84         public byte[] serializeObject(final Object object) {
  85                 if (!(object instanceof NotificationObject)) {
  86                         throw new IllegalArgumentException("Wrong instance of PCEPObject. Passed " + object.getClass() + ". Needed NotificationObject.");
  87                 }
  88
  89                 final NotificationObject notObj = (NotificationObject) object;
  90
  91                 final byte[] tlvs = serializeTlvs(notObj.getTlvs());
  92                 int tlvsLength = 0;
  93                 if (tlvs != null) {
  94                         tlvsLength = tlvs.length;
  95                 }
  96                 final byte[] retBytes = new byte[TLVS_OFFSET + tlvsLength + Util.getPadding(TLVS_OFFSET + tlvs.length, PADDED_TO)];
  97
  98                 if (tlvs != null) {
  99                         ByteArray.copyWhole(tlvs, retBytes, TLVS_OFFSET);
 100                 }
 101
 102                 retBytes[NT_F_OFFSET] = ByteArray.shortToBytes(notObj.getType())[1];
 103                 retBytes[NV_F_OFFSET] = ByteArray.shortToBytes(notObj.getValue())[1];
 104
 105                 return retBytes;
 106         }
 107
 108         public byte[] serializeTlvs(final Tlvs tlvs) {
 109                 if (tlvs.getOverloadDuration() != null) {
 110                         // FIXME : add
 111                         // return serializeTlv(new NoPathVectorBuilder().setFlags(tlvs.getNoPathVector()).build());
 112                 }
 113                 return null;
 114         }
 115
 116         @Override
 117         public int getObjectType() {
 118                 return TYPE;
 119         }
 120
 121         @Override
 122         public int getObjectClass() {
 123                 return CLASS;
 124         }
 125 }