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.Ipv4;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.endpoints.address.family.Ipv4Builder;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.endpoints.address.family.Ipv6;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.endpoints.address.family.Ipv6Builder;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.endpoints.object.EndpointsObj;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.endpoints.object.EndpointsObjBuilder;
  27 import org.slf4j.Logger;
  28 import org.slf4j.LoggerFactory;
  29
  30 /**
  31  * Parser for IPv4 {@link EndpointsObj}
  32  */
  33 public class PCEPEndPointsObjectParser extends AbstractObjectWithTlvsParser<EndpointsObjBuilder> {
  34
  35         private static final Logger LOG = LoggerFactory.getLogger(PCEPEndPointsObjectParser.class);
  36
  37         public static final int CLASS = 4;
  38         public static final int TYPE = 1;
  39
  40         public static final int CLASS_6 = 4;
  41         public static final int TYPE_6 = 2;
  42
  43         /*
  44          * fields lengths and offsets for IPv4 in bytes
  45          */
  46         private static final int SRC4_F_LENGTH = 4;
  47         private static final int DEST4_F_LENGTH = 4;
  48
  49         private static final int SRC4_F_OFFSET = 0;
  50         private static final int DEST4_F_OFFSET = SRC4_F_OFFSET + SRC4_F_LENGTH;
  51
  52         private static final int SRC6_F_LENGTH = 16;
  53         private static final int DEST6_F_LENGTH = 16;
  54
  55         private static final int SRC6_F_OFFSET = 0;
  56         private static final int DEST6_F_OFFSET = SRC6_F_OFFSET + SRC6_F_LENGTH;
  57
  58         public PCEPEndPointsObjectParser(final TlvHandlerRegistry tlvReg) {
  59                 super(tlvReg);
  60         }
  61
  62         @Override
  63         public Object parseObject(final ObjectHeader header, final byte[] bytes) throws PCEPDeserializerException {
  64                 if (bytes == null) {
  65                         throw new IllegalArgumentException("Array of bytes is mandatory");
  66                 }
  67                 final EndpointsObjBuilder builder = new EndpointsObjBuilder();
  68                 builder.setIgnore(header.isIgnore());
  69                 builder.setProcessingRule(header.isProcessingRule());
  70
  71                 if (bytes.length == SRC4_F_LENGTH + DEST4_F_LENGTH) {
  72                         final Ipv4Builder b = new Ipv4Builder();
  73                         b.setSourceIpv4Address(Ipv4Util.addressForBytes(ByteArray.subByte(bytes, SRC4_F_OFFSET, SRC4_F_LENGTH)));
  74                         b.setDestinationIpv4Address((Ipv4Util.addressForBytes(ByteArray.subByte(bytes, DEST4_F_OFFSET, DEST4_F_LENGTH))));
  75                         builder.setAddressFamily(b.build());
  76                 } else if (bytes.length == SRC6_F_LENGTH + DEST6_F_LENGTH) {
  77                         final Ipv6Builder b = new Ipv6Builder();
  78                         b.setSourceIpv6Address(Ipv6Util.addressForBytes(ByteArray.subByte(bytes, SRC6_F_OFFSET, SRC6_F_LENGTH)));
  79                         b.setDestinationIpv6Address((Ipv6Util.addressForBytes(ByteArray.subByte(bytes, DEST6_F_OFFSET, DEST6_F_LENGTH))));
  80                         builder.setAddressFamily(b.build());
  81                 } else {
  82                         throw new PCEPDeserializerException("Wrong length of array of bytes.");
  83                 }
  84                 if (!builder.isProcessingRule()) {
  85                         LOG.debug("Processed bit not set on Endpoints OBJECT, ignoring it.");
  86                         return new UnknownObject(PCEPErrors.P_FLAG_NOT_SET, builder.build());
  87                 }
  88                 return builder.build();
  89         }
  90
  91         @Override
  92         public void addTlv(final EndpointsObjBuilder builder, final Tlv tlv) {
  93                 // No tlvs defined
  94         }
  95
  96         @Override
  97         public byte[] serializeObject(final Object object) {
  98                 if (!(object instanceof EndpointsObj)) {
  99                         throw new IllegalArgumentException("Wrong instance of PCEPObject. Passed " + object.getClass() + ". Needed EndpointsObject.");
 100                 }
 101
 102                 final EndpointsObj ePObj = (EndpointsObj) object;
 103
 104                 final AddressFamily afi = ePObj.getAddressFamily();
 105
 106                 if (afi instanceof Ipv4) {
 107                         final byte[] retBytes = new byte[SRC4_F_LENGTH + DEST4_F_LENGTH];
 108                         ByteArray.copyWhole(Ipv4Util.bytesForAddress(((Ipv4) afi).getSourceIpv4Address()), retBytes, SRC4_F_OFFSET);
 109                         ByteArray.copyWhole(Ipv4Util.bytesForAddress(((Ipv4) afi).getDestinationIpv4Address()), retBytes, DEST4_F_OFFSET);
 110                         return retBytes;
 111                 } else if (afi instanceof Ipv6) {
 112                         final byte[] retBytes = new byte[SRC6_F_LENGTH + DEST6_F_LENGTH];
 113                         ByteArray.copyWhole(Ipv6Util.bytesForAddress(((Ipv6) afi).getSourceIpv6Address()), retBytes, SRC6_F_OFFSET);
 114                         ByteArray.copyWhole(Ipv6Util.bytesForAddress(((Ipv6) afi).getDestinationIpv6Address()), retBytes, DEST6_F_OFFSET);
 115                         return retBytes;
 116                 } else {
 117                         throw new IllegalArgumentException("Wrong instance of NetworkAddress. Passed " + afi.getClass() + ". Needed IPv4");
 118                 }
 119         }
 120
 121         @Override
 122         public int getObjectType() {
 123                 return TYPE;
 124         }
 125
 126         @Override
 127         public int getObjectClass() {
 128                 return CLASS;
 129         }
 130
 131         public int get6ObjectType() {
 132                 return TYPE_6;
 133         }
 134
 135         public int get6ObjectClass() {
 136                 return CLASS_6;
 137         }
 138 }