pcep/impl/src/main/java/org/opendaylight/protocol/pcep/impl/object/PCEPGlobalConstraintsObjectParser.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.spi.TlvHandlerRegistry;
  13 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.GcObject;
  14 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.Object;
  15 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.ObjectHeader;
  16 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.Tlv;
  17 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.pcreq.message.pcreq.message.svec.GcBuilder;
  18
  19 import com.google.common.primitives.UnsignedBytes;
  20
  21 /**
  22  * Parser for {@link GcObject}
  23  */
  24 public class PCEPGlobalConstraintsObjectParser extends AbstractObjectWithTlvsParser<GcBuilder> {
  25
  26         public static final int CLASS = 24;
  27
  28         public static final int TYPE = 1;
  29
  30         private static final int MAX_HOP_F_LENGTH = 1;
  31         private static final int MAX_UTIL_F_LENGTH = 1;
  32         private static final int MIN_UTIL_F_LENGTH = 1;
  33         private static final int OVER_BOOKING_FACTOR_F_LENGTH = 1;
  34
  35         private static final int MAX_HOP_F_OFFSET = 0;
  36         private static final int MAX_UTIL_F_OFFSET = MAX_HOP_F_OFFSET + MAX_HOP_F_LENGTH;
  37         private static final int MIN_UTIL_F_OFFSET = MAX_UTIL_F_OFFSET + MAX_UTIL_F_LENGTH;
  38         private static final int OVER_BOOKING_FACTOR_F_OFFSET = MIN_UTIL_F_OFFSET + MIN_UTIL_F_LENGTH;
  39
  40         private static final int TLVS_OFFSET = OVER_BOOKING_FACTOR_F_OFFSET + OVER_BOOKING_FACTOR_F_LENGTH;
  41
  42         public PCEPGlobalConstraintsObjectParser(final TlvHandlerRegistry tlvReg) {
  43                 super(tlvReg);
  44         }
  45
  46         @Override
  47         public GcObject parseObject(final ObjectHeader header, final byte[] bytes) throws PCEPDeserializerException, PCEPDocumentedException {
  48                 if (bytes == null || bytes.length == 0) {
  49                         throw new IllegalArgumentException("Array of bytes is mandatory. Can't be null or empty.");
  50                 }
  51                 final GcBuilder builder = new GcBuilder();
  52
  53                 builder.setIgnore(header.isIgnore());
  54                 builder.setProcessingRule(header.isProcessingRule());
  55
  56                 builder.setMaxHop((short) UnsignedBytes.toInt(bytes[MAX_HOP_F_OFFSET]));
  57                 builder.setMinUtilization((short) UnsignedBytes.toInt(bytes[MIN_UTIL_F_OFFSET]));
  58                 builder.setMaxUtilization((short) UnsignedBytes.toInt(bytes[MAX_UTIL_F_OFFSET]));
  59                 builder.setOverBookingFactor((short) UnsignedBytes.toInt(bytes[OVER_BOOKING_FACTOR_F_OFFSET]));
  60                 return builder.build();
  61         }
  62
  63         @Override
  64         public void addTlv(final GcBuilder builder, final Tlv tlv) {
  65                 // No tlvs defined
  66         }
  67
  68         @Override
  69         public byte[] serializeObject(final Object object) {
  70                 if (!(object instanceof GcObject)) {
  71                         throw new IllegalArgumentException("Wrong instance of PCEPObject. Passed " + object.getClass() + ". Needed GcObject.");
  72                 }
  73                 final GcObject specObj = (GcObject) object;
  74                 final byte[] retBytes = new byte[TLVS_OFFSET + 0];
  75                 retBytes[MAX_HOP_F_OFFSET] = UnsignedBytes.checkedCast(specObj.getMaxHop());
  76                 retBytes[MAX_UTIL_F_OFFSET] = UnsignedBytes.checkedCast(specObj.getMaxUtilization());
  77                 retBytes[MIN_UTIL_F_OFFSET] = UnsignedBytes.checkedCast(specObj.getMinUtilization());
  78                 retBytes[OVER_BOOKING_FACTOR_F_OFFSET] = UnsignedBytes.checkedCast(specObj.getOverBookingFactor());
  79                 return retBytes;
  80         }
  81
  82         @Override
  83         public int getObjectType() {
  84                 return TYPE;
  85         }
  86
  87         @Override
  88         public int getObjectClass() {
  89                 return CLASS;
  90         }
  91 }