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