pcep/impl/src/main/java/org/opendaylight/protocol/pcep/impl/object/PCEPEndPointsIpv4ObjectParser.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.pcep.spi.AbstractObjectWithTlvsParser;
  12 import org.opendaylight.protocol.pcep.spi.ObjectUtil;
  13 import org.opendaylight.protocol.pcep.spi.PCEPDeserializerException;
  14 import org.opendaylight.protocol.pcep.spi.PCEPErrors;
  15 import org.opendaylight.protocol.pcep.spi.TlvHandlerRegistry;
  16 import org.opendaylight.protocol.pcep.spi.UnknownObject;
  17 import org.opendaylight.protocol.util.ByteArray;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.Object;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.ObjectHeader;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.Tlv;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.endpoints.AddressFamily;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.endpoints.address.family.Ipv4Case;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.endpoints.address.family.Ipv4CaseBuilder;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.endpoints.address.family.ipv4._case.Ipv4Builder;
  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 PCEPEndPointsIpv4ObjectParser extends AbstractObjectWithTlvsParser<EndpointsObjBuilder> {
  34
  35         private static final Logger LOG = LoggerFactory.getLogger(PCEPEndPointsIpv4ObjectParser.class);
  36
  37         public static final int CLASS = 4;
  38         public static final int TYPE = 1;
  39
  40         /*
  41          * fields lengths and offsets for IPv4 in bytes
  42          */
  43         private static final int SRC4_F_LENGTH = 4;
  44         private static final int DEST4_F_LENGTH = 4;
  45
  46         private static final int SRC4_F_OFFSET = 0;
  47         private static final int DEST4_F_OFFSET = SRC4_F_OFFSET + SRC4_F_LENGTH;
  48
  49         public PCEPEndPointsIpv4ObjectParser(final TlvHandlerRegistry tlvReg) {
  50                 super(tlvReg);
  51         }
  52
  53         @Override
  54         public Object parseObject(final ObjectHeader header, final byte[] bytes) throws PCEPDeserializerException {
  55                 if (bytes == null) {
  56                         throw new IllegalArgumentException("Array of bytes is mandatory");
  57                 }
  58                 final EndpointsObjBuilder builder = new EndpointsObjBuilder();
  59                 builder.setIgnore(header.isIgnore());
  60                 builder.setProcessingRule(header.isProcessingRule());
  61                 if (!builder.isProcessingRule()) {
  62                         LOG.debug("Processed bit not set on Endpoints OBJECT, ignoring it.");
  63                         return new UnknownObject(PCEPErrors.P_FLAG_NOT_SET, builder.build());
  64                 }
  65                 if (bytes.length != SRC4_F_LENGTH + DEST4_F_LENGTH) {
  66                         throw new PCEPDeserializerException("Wrong length of array of bytes.");
  67                 }
  68                 final Ipv4Builder b = new Ipv4Builder();
  69                 b.setSourceIpv4Address(Ipv4Util.addressForBytes(ByteArray.subByte(bytes, SRC4_F_OFFSET, SRC4_F_LENGTH)));
  70                 b.setDestinationIpv4Address((Ipv4Util.addressForBytes(ByteArray.subByte(bytes, DEST4_F_OFFSET, DEST4_F_LENGTH))));
  71                 builder.setAddressFamily(new Ipv4CaseBuilder().setIpv4(b.build()).build());
  72                 return builder.build();
  73         }
  74
  75         @Override
  76         public void addTlv(final EndpointsObjBuilder builder, final Tlv tlv) {
  77                 // No tlvs defined
  78         }
  79
  80         @Override
  81         public byte[] serializeObject(final Object object) {
  82                 if (!(object instanceof EndpointsObj)) {
  83                         throw new IllegalArgumentException("Wrong instance of PCEPObject. Passed " + object.getClass() + ". Needed EndpointsObject.");
  84                 }
  85                 final EndpointsObj ePObj = (EndpointsObj) object;
  86
  87                 final AddressFamily afi = ePObj.getAddressFamily();
  88
  89                 if (!(afi instanceof Ipv4Case)) {
  90                         throw new IllegalArgumentException("Wrong instance of NetworkAddress. Passed " + afi.getClass() + ". Needed IPv4");
  91                 }
  92                 final byte[] retBytes = new byte[SRC4_F_LENGTH + DEST4_F_LENGTH];
  93                 ByteArray.copyWhole(Ipv4Util.bytesForAddress((((Ipv4Case) afi).getIpv4()).getSourceIpv4Address()), retBytes, SRC4_F_OFFSET);
  94                 ByteArray.copyWhole(Ipv4Util.bytesForAddress((((Ipv4Case) afi).getIpv4()).getDestinationIpv4Address()), retBytes, DEST4_F_OFFSET);
  95                 return ObjectUtil.formatSubobject(TYPE, CLASS, object.isProcessingRule(), object.isIgnore(), retBytes);
  96         }
  97
  98         @Override
  99         public int getObjectType() {
 100                 return TYPE;
 101         }
 102
 103         @Override
 104         public int getObjectClass() {
 105                 return CLASS;
 106         }
 107 }