pcep/base-parser/src/main/java/org/opendaylight/protocol/pcep/parser/object/end/points/PCEPP2MPEndPointsIpv4ObjectParser.java

   1 /*
   2  * Copyright (c) 2018 AT&T Intellectual Property. 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.parser.object.end.points;
   9
  10 import static com.google.common.base.Preconditions.checkArgument;
  11
  12 import io.netty.buffer.ByteBuf;
  13 import io.netty.buffer.Unpooled;
  14 import java.util.ArrayList;
  15 import java.util.List;
  16 import org.opendaylight.protocol.pcep.spi.CommonObjectParser;
  17 import org.opendaylight.protocol.pcep.spi.ObjectUtil;
  18 import org.opendaylight.protocol.pcep.spi.PCEPDeserializerException;
  19 import org.opendaylight.protocol.pcep.spi.PCEPErrors;
  20 import org.opendaylight.protocol.pcep.spi.UnknownObject;
  21 import org.opendaylight.protocol.util.Ipv4Util;
  22 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv4AddressNoZone;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.Object;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.ObjectHeader;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.P2mpLeaves;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.endpoints.address.family.P2mpIpv4CaseBuilder;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.endpoints.address.family.p2mp.ipv4._case.P2mpIpv4;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.endpoints.address.family.p2mp.ipv4._case.P2mpIpv4Builder;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.endpoints.object.EndpointsObjBuilder;
  30 import org.slf4j.Logger;
  31 import org.slf4j.LoggerFactory;
  32
  33 public class PCEPP2MPEndPointsIpv4ObjectParser extends CommonObjectParser {
  34     private static final int CLASS = 4;
  35     private static final int TYPE = 3;
  36     private static final int LEAF_TYPE_SIZE = 32;
  37     private static final Logger LOG = LoggerFactory.getLogger(PCEPP2MPEndPointsIpv4ObjectParser.class);
  38
  39     public PCEPP2MPEndPointsIpv4ObjectParser() {
  40         super(CLASS, TYPE);
  41     }
  42
  43     public static void serializeObject(
  44         final Boolean processing,
  45         final Boolean ignore,
  46         final P2mpIpv4 p2mpIpv4,
  47         final ByteBuf buffer) {
  48         final List<Ipv4AddressNoZone> dest = p2mpIpv4.getDestinationIpv4Address();
  49         checkArgument(dest != null, "DestinationIpv4Address is mandatory.");
  50         final ByteBuf body = Unpooled.buffer(LEAF_TYPE_SIZE + Ipv4Util.IP4_LENGTH + Ipv4Util.IP4_LENGTH * dest.size());
  51         checkArgument(p2mpIpv4.getSourceIpv4Address() != null, "SourceIpv4Address is mandatory.");
  52         body.writeInt(p2mpIpv4.getP2mpLeaves().getIntValue());
  53         Ipv4Util.writeIpv4Address(p2mpIpv4.getSourceIpv4Address(), body);
  54         dest.forEach(ipv4 -> Ipv4Util.writeIpv4Address(ipv4, body));
  55         ObjectUtil.formatSubobject(TYPE, CLASS, processing, ignore, body, buffer);
  56     }
  57
  58     @Override
  59     public Object parseObject(final ObjectHeader header, final ByteBuf bytes) throws PCEPDeserializerException {
  60         checkArgument(bytes != null && bytes.isReadable(), "Array of bytes is mandatory. Can't be null or empty.");
  61         final EndpointsObjBuilder builder = new EndpointsObjBuilder();
  62         if (!header.isProcessingRule()) {
  63             LOG.debug("Processed bit not set on Endpoints OBJECT, ignoring it.");
  64             return new UnknownObject(PCEPErrors.P_FLAG_NOT_SET, builder.build());
  65         }
  66         if (bytes.readableBytes() % Ipv4Util.IP4_LENGTH != 0) {
  67             throw new PCEPDeserializerException("Wrong length of array of bytes.");
  68         }
  69         builder.setIgnore(header.isIgnore());
  70         builder.setProcessingRule(header.isProcessingRule());
  71         final P2mpIpv4Builder p2mpIpv4Builder = new P2mpIpv4Builder();
  72         p2mpIpv4Builder.setP2mpLeaves(P2mpLeaves.forValue(bytes.readInt()));
  73         p2mpIpv4Builder.setSourceIpv4Address(Ipv4Util.noZoneAddressForByteBuf(bytes));
  74         List<Ipv4AddressNoZone> dest = new ArrayList<>();
  75         while (bytes.isReadable()) {
  76             dest.add(Ipv4Util.noZoneAddressForByteBuf(bytes));
  77         }
  78         p2mpIpv4Builder.setDestinationIpv4Address(dest);
  79         builder.setAddressFamily(new P2mpIpv4CaseBuilder().setP2mpIpv4(p2mpIpv4Builder.build()).build());
  80         return builder.build();
  81     }
  82 }