pcep/impl/src/main/java/org/opendaylight/protocol/pcep/impl/object/PCEPEndPointsIpv6ObjectParser.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.concepts.Ipv6Util;
  11 import org.opendaylight.protocol.pcep.spi.AbstractObjectWithTlvsParser;
  12 import org.opendaylight.protocol.pcep.spi.ObjectUtil;
  13 import org.opendaylight.protocol.pcep.spi.PCEPDeserializerException;
  14 import org.opendaylight.protocol.pcep.spi.PCEPErrors;
  15 import org.opendaylight.protocol.pcep.spi.TlvRegistry;
  16 import org.opendaylight.protocol.pcep.spi.UnknownObject;
  17 import org.opendaylight.protocol.util.ByteArray;
  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.endpoints.AddressFamily;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.endpoints.address.family.Ipv6Case;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.endpoints.address.family.Ipv6CaseBuilder;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.endpoints.address.family.ipv6._case.Ipv6Builder;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.endpoints.object.EndpointsObj;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.endpoints.object.EndpointsObjBuilder;
  26 import org.slf4j.Logger;
  27 import org.slf4j.LoggerFactory;
  28
  29 /**
  30  * Parser for IPv6 {@link EndpointsObj}
  31  */
  32 public class PCEPEndPointsIpv6ObjectParser extends AbstractObjectWithTlvsParser<EndpointsObjBuilder> {
  33
  34         private static final Logger LOG = LoggerFactory.getLogger(PCEPEndPointsIpv4ObjectParser.class);
  35
  36         public static final int CLASS = 4;
  37         public static final int TYPE = 2;
  38
  39         /*
  40          * fields lengths and offsets for IPv4 in bytes
  41          */
  42         private static final int SRC6_F_LENGTH = 16;
  43         private static final int DEST6_F_LENGTH = 16;
  44
  45         private static final int SRC6_F_OFFSET = 0;
  46         private static final int DEST6_F_OFFSET = SRC6_F_OFFSET + SRC6_F_LENGTH;
  47
  48         public PCEPEndPointsIpv6ObjectParser(final TlvRegistry tlvReg) {
  49                 super(tlvReg);
  50         }
  51
  52         @Override
  53         public Object parseObject(final ObjectHeader header, final byte[] bytes) throws PCEPDeserializerException {
  54                 if (bytes == null) {
  55                         throw new IllegalArgumentException("Array of bytes is mandatory");
  56                 }
  57                 final EndpointsObjBuilder builder = new EndpointsObjBuilder();
  58                 builder.setIgnore(header.isIgnore());
  59                 builder.setProcessingRule(header.isProcessingRule());
  60                 if (!builder.isProcessingRule()) {
  61                         LOG.debug("Processed bit not set on Endpoints OBJECT, ignoring it.");
  62                         return new UnknownObject(PCEPErrors.P_FLAG_NOT_SET, builder.build());
  63                 }
  64                 if (bytes.length != SRC6_F_LENGTH + DEST6_F_LENGTH) {
  65                         throw new PCEPDeserializerException("Wrong length of array of bytes.");
  66                 }
  67                 final Ipv6Builder b = new Ipv6Builder();
  68                 b.setSourceIpv6Address(Ipv6Util.addressForBytes(ByteArray.subByte(bytes, SRC6_F_OFFSET, SRC6_F_LENGTH)));
  69                 b.setDestinationIpv6Address((Ipv6Util.addressForBytes(ByteArray.subByte(bytes, DEST6_F_OFFSET, DEST6_F_LENGTH))));
  70                 builder.setAddressFamily(new Ipv6CaseBuilder().setIpv6(b.build()).build());
  71                 return builder.build();
  72         }
  73
  74         @Override
  75         public byte[] serializeObject(final Object object) {
  76                 if (!(object instanceof EndpointsObj)) {
  77                         throw new IllegalArgumentException("Wrong instance of PCEPObject. Passed " + object.getClass() + ". Needed EndpointsObject.");
  78                 }
  79                 final EndpointsObj ePObj = (EndpointsObj) object;
  80
  81                 final AddressFamily afi = ePObj.getAddressFamily();
  82
  83                 if (!(afi instanceof Ipv6Case)) {
  84                         throw new IllegalArgumentException("Wrong instance of NetworkAddress. Passed " + afi.getClass() + ". Needed IPv4");
  85                 }
  86                 final byte[] retBytes = new byte[SRC6_F_LENGTH + DEST6_F_LENGTH];
  87                 ByteArray.copyWhole(Ipv6Util.bytesForAddress((((Ipv6Case) afi).getIpv6()).getSourceIpv6Address()), retBytes, SRC6_F_OFFSET);
  88                 ByteArray.copyWhole(Ipv6Util.bytesForAddress((((Ipv6Case) afi).getIpv6()).getDestinationIpv6Address()), retBytes, DEST6_F_OFFSET);
  89                 return ObjectUtil.formatSubobject(TYPE, CLASS, object.isProcessingRule(), object.isIgnore(), retBytes);
  90         }
  91 }