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.PCEPDocumentedException;
  14 import org.opendaylight.protocol.pcep.PCEPErrors;
  15 import org.opendaylight.protocol.pcep.spi.TlvHandlerRegistry;
  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
  28 /**
  29  * Parser for IPv4 {@link EndpointsObj}
  30  */
  31 public class PCEPEndPointsObjectParser extends AbstractObjectWithTlvsParser<EndpointsObjBuilder> {
  32
  33         public static final int CLASS = 4;
  34         public static final int TYPE = 1;
  35
  36         public static final int CLASS_6 = 4;
  37         public static final int TYPE_6 = 2;
  38
  39         /*
  40          * fields lengths and offsets for IPv4 in bytes
  41          */
  42         private static final int SRC4_F_LENGTH = 4;
  43         private static final int DEST4_F_LENGTH = 4;
  44
  45         private static final int SRC4_F_OFFSET = 0;
  46         private static final int DEST4_F_OFFSET = SRC4_F_OFFSET + SRC4_F_LENGTH;
  47
  48         private static final int SRC6_F_LENGTH = 16;
  49         private static final int DEST6_F_LENGTH = 16;
  50
  51         private static final int SRC6_F_OFFSET = 0;
  52         private static final int DEST6_F_OFFSET = SRC6_F_OFFSET + SRC6_F_LENGTH;
  53
  54         public PCEPEndPointsObjectParser(final TlvHandlerRegistry tlvReg) {
  55                 super(tlvReg);
  56         }
  57
  58         @Override
  59         public EndpointsObj parseObject(final ObjectHeader header, final byte[] bytes) throws PCEPDeserializerException,
  60                         PCEPDocumentedException {
  61                 if (bytes == null) {
  62                         throw new IllegalArgumentException("Array of bytes is mandatory");
  63                 }
  64
  65                 if (!header.isProcessingRule()) {
  66                         throw new PCEPDocumentedException("Processed flag not set", PCEPErrors.P_FLAG_NOT_SET);
  67                 }
  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(b.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(b.build());
  83                 } else {
  84                         throw new PCEPDeserializerException("Wrong length of array of bytes.");
  85                 }
  86                 return builder.build();
  87         }
  88
  89         @Override
  90         public void addTlv(final EndpointsObjBuilder builder, final Tlv tlv) {
  91                 // No tlvs defined
  92         }
  93
  94         @Override
  95         public byte[] serializeObject(final Object object) {
  96                 if (!(object instanceof EndpointsObj)) {
  97                         throw new IllegalArgumentException("Wrong instance of PCEPObject. Passed " + object.getClass() + ". Needed EndpointsObject.");
  98                 }
  99
 100                 final EndpointsObj ePObj = (EndpointsObj) object;
 101
 102                 final AddressFamily afi = ePObj.getAddressFamily();
 103
 104                 if (afi instanceof Ipv4) {
 105                         final byte[] retBytes = new byte[SRC4_F_LENGTH + DEST4_F_LENGTH];
 106                         ByteArray.copyWhole(Ipv4Util.bytesForAddress(((Ipv4) afi).getSourceIpv4Address()), retBytes, SRC4_F_OFFSET);
 107                         ByteArray.copyWhole(Ipv4Util.bytesForAddress(((Ipv4) afi).getDestinationIpv4Address()), retBytes, DEST4_F_OFFSET);
 108                         return retBytes;
 109                 } else if (afi instanceof Ipv6) {
 110                         final byte[] retBytes = new byte[SRC6_F_LENGTH + DEST6_F_LENGTH];
 111                         ByteArray.copyWhole(Ipv6Util.bytesForAddress(((Ipv6) afi).getSourceIpv6Address()), retBytes, SRC6_F_OFFSET);
 112                         ByteArray.copyWhole(Ipv6Util.bytesForAddress(((Ipv6) afi).getDestinationIpv6Address()), retBytes, DEST6_F_OFFSET);
 113                         return retBytes;
 114                 } else {
 115                         throw new IllegalArgumentException("Wrong instance of NetworkAddress. Passed " + afi.getClass() + ". Needed IPv4");
 116                 }
 117         }
 118
 119         @Override
 120         public int getObjectType() {
 121                 return TYPE;
 122         }
 123
 124         @Override
 125         public int getObjectClass() {
 126                 return CLASS;
 127         }
 128
 129         public int get6ObjectType() {
 130                 return TYPE_6;
 131         }
 132
 133         public int get6ObjectClass() {
 134                 return CLASS_6;
 135         }
 136 }