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