pcep/impl/src/main/java/org/opendaylight/protocol/pcep/impl/object/PCEPEndPointsObjectParser.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.Ipv4Util;
  11 import org.opendaylight.protocol.concepts.Ipv6Util;
  12 import org.opendaylight.protocol.pcep.spi.PCEPDeserializerException;
  13 import org.opendaylight.protocol.pcep.spi.PCEPErrors;
  14 import org.opendaylight.protocol.pcep.spi.TlvHandlerRegistry;
  15 import org.opendaylight.protocol.pcep.spi.UnknownObject;
  16 import org.opendaylight.protocol.util.ByteArray;
  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.Tlv;
  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.Ipv4Case;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.endpoints.address.family.Ipv4CaseBuilder;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.endpoints.address.family.Ipv6Case;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.endpoints.address.family.Ipv6CaseBuilder;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.endpoints.address.family.ipv4._case.Ipv4Builder;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.endpoints.address.family.ipv6._case.Ipv6Builder;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.endpoints.object.EndpointsObj;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.endpoints.object.EndpointsObjBuilder;
  29 import org.slf4j.Logger;
  30 import org.slf4j.LoggerFactory;
  31
  32 /**
  33  * Parser for IPv4 {@link EndpointsObj}
  34  */
  35 public class PCEPEndPointsObjectParser extends AbstractObjectWithTlvsParser<EndpointsObjBuilder> {
  36
  37         private static final Logger LOG = LoggerFactory.getLogger(PCEPEndPointsObjectParser.class);
  38
  39         public static final int CLASS = 4;
  40         public static final int TYPE = 1;
  41
  42         public static final int CLASS_6 = 4;
  43         public static final int TYPE_6 = 2;
  44
  45         /*
  46          * fields lengths and offsets for IPv4 in bytes
  47          */
  48         private static final int SRC4_F_LENGTH = 4;
  49         private static final int DEST4_F_LENGTH = 4;
  50
  51         private static final int SRC4_F_OFFSET = 0;
  52         private static final int DEST4_F_OFFSET = SRC4_F_OFFSET + SRC4_F_LENGTH;
  53
  54         private static final int SRC6_F_LENGTH = 16;
  55         private static final int DEST6_F_LENGTH = 16;
  56
  57         private static final int SRC6_F_OFFSET = 0;
  58         private static final int DEST6_F_OFFSET = SRC6_F_OFFSET + SRC6_F_LENGTH;
  59
  60         public PCEPEndPointsObjectParser(final TlvHandlerRegistry tlvReg) {
  61                 super(tlvReg);
  62         }
  63
  64         @Override
  65         public Object parseObject(final ObjectHeader header, final byte[] bytes) throws PCEPDeserializerException {
  66                 if (bytes == null) {
  67                         throw new IllegalArgumentException("Array of bytes is mandatory");
  68                 }
  69                 final EndpointsObjBuilder builder = new EndpointsObjBuilder();
  70                 builder.setIgnore(header.isIgnore());
  71                 builder.setProcessingRule(header.isProcessingRule());
  72
  73                 if (bytes.length == SRC4_F_LENGTH + DEST4_F_LENGTH) {
  74                         final Ipv4Builder b = new Ipv4Builder();
  75                         b.setSourceIpv4Address(Ipv4Util.addressForBytes(ByteArray.subByte(bytes, SRC4_F_OFFSET, SRC4_F_LENGTH)));
  76                         b.setDestinationIpv4Address((Ipv4Util.addressForBytes(ByteArray.subByte(bytes, DEST4_F_OFFSET, DEST4_F_LENGTH))));
  77                         builder.setAddressFamily(new Ipv4CaseBuilder().setIpv4(b.build()).build());
  78                 } else if (bytes.length == SRC6_F_LENGTH + DEST6_F_LENGTH) {
  79                         final Ipv6Builder b = new Ipv6Builder();
  80                         b.setSourceIpv6Address(Ipv6Util.addressForBytes(ByteArray.subByte(bytes, SRC6_F_OFFSET, SRC6_F_LENGTH)));
  81                         b.setDestinationIpv6Address((Ipv6Util.addressForBytes(ByteArray.subByte(bytes, DEST6_F_OFFSET, DEST6_F_LENGTH))));
  82                         builder.setAddressFamily(new Ipv6CaseBuilder().setIpv6(b.build()).build());
  83                 } else {
  84                         throw new PCEPDeserializerException("Wrong length of array of bytes.");
  85                 }
  86                 if (!builder.isProcessingRule()) {
  87                         LOG.debug("Processed bit not set on Endpoints OBJECT, ignoring it.");
  88                         return new UnknownObject(PCEPErrors.P_FLAG_NOT_SET, builder.build());
  89                 }
  90                 return builder.build();
  91         }
  92
  93         @Override
  94         public void addTlv(final EndpointsObjBuilder builder, final Tlv tlv) {
  95                 // No tlvs defined
  96         }
  97
  98         @Override
  99         public byte[] serializeObject(final Object object) {
 100                 if (!(object instanceof EndpointsObj)) {
 101                         throw new IllegalArgumentException("Wrong instance of PCEPObject. Passed " + object.getClass() + ". Needed EndpointsObject.");
 102                 }
 103
 104                 final EndpointsObj ePObj = (EndpointsObj) object;
 105
 106                 final AddressFamily afi = ePObj.getAddressFamily();
 107
 108                 if (afi instanceof Ipv4Case) {
 109                         final byte[] retBytes = new byte[SRC4_F_LENGTH + DEST4_F_LENGTH];
 110                         ByteArray.copyWhole(Ipv4Util.bytesForAddress((((Ipv4Case) afi).getIpv4()).getSourceIpv4Address()), retBytes, SRC4_F_OFFSET);
 111                         ByteArray.copyWhole(Ipv4Util.bytesForAddress((((Ipv4Case) afi).getIpv4()).getDestinationIpv4Address()), retBytes,
 112                                         DEST4_F_OFFSET);
 113                         return retBytes;
 114                 } else if (afi instanceof Ipv6Case) {
 115                         final byte[] retBytes = new byte[SRC6_F_LENGTH + DEST6_F_LENGTH];
 116                         ByteArray.copyWhole(Ipv6Util.bytesForAddress((((Ipv6Case) afi).getIpv6()).getSourceIpv6Address()), retBytes, SRC6_F_OFFSET);
 117                         ByteArray.copyWhole(Ipv6Util.bytesForAddress((((Ipv6Case) afi).getIpv6()).getDestinationIpv6Address()), retBytes,
 118                                         DEST6_F_OFFSET);
 119                         return retBytes;
 120                 } else {
 121                         throw new IllegalArgumentException("Wrong instance of NetworkAddress. Passed " + afi.getClass() + ". Needed IPv4");
 122                 }
 123         }
 124
 125         @Override
 126         public int getObjectType() {
 127                 return TYPE;
 128         }
 129
 130         @Override
 131         public int getObjectClass() {
 132                 return CLASS;
 133         }
 134
 135         public int get6ObjectType() {
 136                 return TYPE_6;
 137         }
 138
 139         public int get6ObjectClass() {
 140                 return CLASS_6;
 141         }
 142 }