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.impl.message.AbstractObjectWithTlvsParser;
  16 import org.opendaylight.protocol.pcep.spi.TlvHandlerRegistry;
  17 import org.opendaylight.protocol.util.ByteArray;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.EndpointsObject;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.Object;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.ObjectHeader;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.Tlv;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.endpoints.object.AddressFamily;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.endpoints.object.address.family.Ipv4;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.endpoints.object.address.family.Ipv4Builder;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.endpoints.object.address.family.Ipv6;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.endpoints.object.address.family.Ipv6Builder;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.pcinitiate.message.pcinitiate.message.requests.EndpointsBuilder;
  28
  29 /**
  30  * Parser for IPv4 {@link EndpointsObject}
  31  */
  32 public class PCEPEndPointsObjectParser extends AbstractObjectWithTlvsParser<EndpointsBuilder> {
  33
  34         public static final int CLASS = 4;
  35
  36         public static final int TYPE = 1;
  37
  38         /*
  39          * fields lengths and offsets for IPv4 in bytes
  40          */
  41         public static final int SRC4_F_LENGTH = 4;
  42         public static final int DEST4_F_LENGTH = 4;
  43
  44         public static final int SRC4_F_OFFSET = 0;
  45         public static final int DEST4_F_OFFSET = SRC4_F_OFFSET + SRC4_F_LENGTH;
  46
  47         public static final int CLASS_6 = 4;
  48
  49         public static final int TYPE_6 = 2;
  50
  51         public static final int SRC6_F_LENGTH = 16;
  52         public static final int DEST6_F_LENGTH = 16;
  53
  54         public static final int SRC6_F_OFFSET = 0;
  55         public static final int DEST6_F_OFFSET = SRC6_F_OFFSET + SRC6_F_LENGTH;
  56
  57         public PCEPEndPointsObjectParser(final TlvHandlerRegistry tlvReg) {
  58                 super(tlvReg);
  59         }
  60
  61         @Override
  62         public EndpointsObject parseObject(final ObjectHeader header, final byte[] bytes) throws PCEPDeserializerException,
  63         PCEPDocumentedException {
  64                 if (bytes == null) {
  65                         throw new IllegalArgumentException("Array of bytes is mandatory");
  66                 }
  67
  68                 if (!header.isProcessingRule()) {
  69                         throw new PCEPDocumentedException("Processed flag not set", PCEPErrors.P_FLAG_NOT_SET);
  70                 }
  71
  72                 final EndpointsBuilder builder = new EndpointsBuilder();
  73                 builder.setIgnore(header.isIgnore());
  74                 builder.setProcessingRule(header.isProcessingRule());
  75
  76                 if (bytes.length == SRC4_F_LENGTH + DEST4_F_LENGTH) {
  77                         final Ipv4Builder b = new Ipv4Builder();
  78                         b.setSourceIpv4Address(Ipv4Util.addressForBytes(ByteArray.subByte(bytes, SRC4_F_OFFSET, SRC4_F_LENGTH)));
  79                         b.setDestinationIpv4Address((Ipv4Util.addressForBytes(ByteArray.subByte(bytes, DEST4_F_OFFSET, DEST4_F_LENGTH))));
  80                         builder.setAddressFamily(b.build());
  81                 } else if (bytes.length == SRC6_F_LENGTH + DEST6_F_LENGTH) {
  82                         final Ipv6Builder b = new Ipv6Builder();
  83                         b.setSourceIpv6Address(Ipv6Util.addressForBytes(ByteArray.subByte(bytes, SRC6_F_OFFSET, SRC6_F_LENGTH)));
  84                         b.setDestinationIpv6Address((Ipv6Util.addressForBytes(ByteArray.subByte(bytes, DEST6_F_OFFSET, DEST6_F_LENGTH))));
  85                         builder.setAddressFamily(b.build());
  86                 } else {
  87                         throw new PCEPDeserializerException("Wrong length of array of bytes.");
  88                 }
  89                 return builder.build();
  90         }
  91
  92         @Override
  93         public void addTlv(final EndpointsBuilder builder, final Tlv tlv) {
  94                 // No tlvs defined
  95         }
  96
  97         @Override
  98         public byte[] serializeObject(final Object object) {
  99                 if (!(object instanceof EndpointsObject)) {
 100                         throw new IllegalArgumentException("Wrong instance of PCEPObject. Passed " + object.getClass() + ". Needed EndpointsObject.");
 101                 }
 102
 103                 final EndpointsObject ePObj = (EndpointsObject) object;
 104
 105                 final AddressFamily afi = ePObj.getAddressFamily();
 106
 107                 if (afi instanceof Ipv4) {
 108                         final byte[] retBytes = new byte[SRC4_F_LENGTH + DEST4_F_LENGTH];
 109                         ByteArray.copyWhole(Ipv4Util.bytesForAddress(((Ipv4) afi).getSourceIpv4Address()), retBytes, SRC4_F_OFFSET);
 110                         ByteArray.copyWhole(Ipv4Util.bytesForAddress(((Ipv4) afi).getDestinationIpv4Address()), retBytes, DEST4_F_OFFSET);
 111                         return retBytes;
 112                 } else if (afi instanceof Ipv6) {
 113                         final byte[] retBytes = new byte[SRC6_F_LENGTH + DEST6_F_LENGTH];
 114                         ByteArray.copyWhole(Ipv6Util.bytesForAddress(((Ipv6) afi).getSourceIpv6Address()), retBytes, SRC6_F_OFFSET);
 115                         ByteArray.copyWhole(Ipv6Util.bytesForAddress(((Ipv6) afi).getDestinationIpv6Address()), retBytes, DEST6_F_OFFSET);
 116                         return retBytes;
 117                 } else {
 118                         throw new IllegalArgumentException("Wrong instance of NetworkAddress. Passed " + afi.getClass() + ". Needed IPv4");
 119                 }
 120         }
 121
 122         @Override
 123         public int getObjectType() {
 124                 return TYPE;
 125         }
 126
 127         @Override
 128         public int getObjectClass() {
 129                 return CLASS;
 130         }
 131
 132         public int get6ObjectType() {
 133                 return TYPE_6;
 134         }
 135
 136         public int get6ObjectClass() {
 137                 return CLASS_6;
 138         }
 139 }