bgp/extensions/mvpn/src/main/java/org/opendaylight/protocol/bgp/mvpn/impl/nlri/IntraAsIPmsiADHandler.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
   9 package org.opendaylight.protocol.bgp.mvpn.impl.nlri;
  10
  11 import com.google.common.base.Preconditions;
  12 import io.netty.buffer.ByteBuf;
  13 import io.netty.buffer.Unpooled;
  14 import org.opendaylight.bgp.concepts.IpAddressUtil;
  15 import org.opendaylight.bgp.concepts.RouteDistinguisherUtil;
  16 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.mvpn.rev200120.NlriType;
  17 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.mvpn.rev200120.intra.as.i.pmsi.a.d.grouping.IntraAsIPmsiAD;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.mvpn.rev200120.intra.as.i.pmsi.a.d.grouping.IntraAsIPmsiADBuilder;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.mvpn.rev200120.mvpn.MvpnChoice;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.mvpn.rev200120.mvpn.mvpn.choice.IntraAsIPmsiADCase;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.mvpn.rev200120.mvpn.mvpn.choice.IntraAsIPmsiADCaseBuilder;
  22
  23 /**
  24  * https://tools.ietf.org/html/rfc6514#section-4.1.
  25  *
  26  * @author Claudio D. Gasparini
  27  */
  28 public final class IntraAsIPmsiADHandler extends AbstractMvpnNlri<IntraAsIPmsiADCase> {
  29
  30     private static final int IPV4_CONTENT_LENGTH = 12;
  31     private static final int IPV6_CONTENT_LENGTH = 24;
  32
  33     @Override
  34     public int getType() {
  35         return NlriType.IntraAsIPmsiAD.getIntValue();
  36     }
  37
  38     @Override
  39     public IntraAsIPmsiADCase parseMvpn(final ByteBuf buffer) {
  40         Preconditions.checkArgument(buffer.readableBytes() == IPV4_CONTENT_LENGTH
  41                         || buffer.readableBytes() == IPV6_CONTENT_LENGTH,
  42                 "Wrong length of array of bytes. Passed: %s ;", buffer);
  43         return new IntraAsIPmsiADCaseBuilder()
  44                 .setIntraAsIPmsiAD(new IntraAsIPmsiADBuilder()
  45                         .setRouteDistinguisher(RouteDistinguisherUtil.parseRouteDistinguisher(buffer))
  46                         .setOrigRouteIp(IpAddressUtil.addressForByteBufWOLength(buffer))
  47                         .build())
  48                 .build();
  49     }
  50
  51     @Override
  52     protected ByteBuf serializeBody(final IntraAsIPmsiADCase mvpn) {
  53         final IntraAsIPmsiAD route = mvpn.getIntraAsIPmsiAD();
  54         final ByteBuf nlriByteBuf = Unpooled.buffer();
  55         RouteDistinguisherUtil.serializeRouteDistinquisher(route.getRouteDistinguisher(), nlriByteBuf);
  56         final ByteBuf orig = IpAddressUtil.bytesWOLengthFor(route.getOrigRouteIp());
  57         Preconditions.checkArgument(orig.readableBytes() > 0);
  58         nlriByteBuf.writeBytes(orig);
  59         return nlriByteBuf;
  60     }
  61
  62     @Override
  63     public Class<? extends MvpnChoice> getClazz() {
  64         return IntraAsIPmsiADCase.class;
  65     }
  66 }