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 static com.google.common.base.Preconditions.checkArgument;
  12
  13 import io.netty.buffer.ByteBuf;
  14 import io.netty.buffer.Unpooled;
  15 import org.opendaylight.bgp.concepts.IpAddressUtil;
  16 import org.opendaylight.bgp.concepts.RouteDistinguisherUtil;
  17 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.mvpn.rev200120.NlriType;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.mvpn.rev200120.intra.as.i.pmsi.a.d.grouping.IntraAsIPmsiAD;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.mvpn.rev200120.intra.as.i.pmsi.a.d.grouping.IntraAsIPmsiADBuilder;
  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     private static final int IPV4_CONTENT_LENGTH = 12;
  30     private static final int IPV6_CONTENT_LENGTH = 24;
  31
  32     public IntraAsIPmsiADHandler() {
  33         super(IntraAsIPmsiADCase.class, NlriType.IntraAsIPmsiAD);
  34     }
  35
  36     @Override
  37     public IntraAsIPmsiADCase parseMvpn(final ByteBuf buffer) {
  38         checkArgument(buffer.readableBytes() == IPV4_CONTENT_LENGTH || buffer.readableBytes() == IPV6_CONTENT_LENGTH,
  39             "Wrong length of array of bytes. Passed: %s ;", buffer);
  40         return new IntraAsIPmsiADCaseBuilder()
  41             .setIntraAsIPmsiAD(new IntraAsIPmsiADBuilder()
  42                 .setRouteDistinguisher(RouteDistinguisherUtil.parseRouteDistinguisher(buffer))
  43                 .setOrigRouteIp(IpAddressUtil.addressForByteBufWOLength(buffer))
  44                 .build())
  45             .build();
  46     }
  47
  48     @Override
  49     protected ByteBuf serializeBody(final IntraAsIPmsiADCase mvpn) {
  50         final IntraAsIPmsiAD route = mvpn.getIntraAsIPmsiAD();
  51         final ByteBuf nlriByteBuf = Unpooled.buffer();
  52         RouteDistinguisherUtil.serializeRouteDistinquisher(route.getRouteDistinguisher(), nlriByteBuf);
  53         serializeAddress(route.getOrigRouteIp(), nlriByteBuf);
  54         return nlriByteBuf;
  55     }
  56 }