bgp/extensions/evpn/src/main/java/org/opendaylight/protocol/bgp/evpn/impl/nlri/IncMultEthTagRParser.java

   1 /*
   2  * Copyright (c) 2016 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.bgp.evpn.impl.nlri;
   9
  10 import static org.opendaylight.protocol.bgp.evpn.impl.nlri.NlriModelUtil.extractETI;
  11 import static org.opendaylight.protocol.bgp.evpn.impl.nlri.NlriModelUtil.extractOrigRouteIp;
  12
  13 import com.google.common.base.Preconditions;
  14 import io.netty.buffer.ByteBuf;
  15 import io.netty.buffer.Unpooled;
  16 import org.opendaylight.bgp.concepts.IpAddressUtil;
  17 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpAddress;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.evpn.rev180329.NlriType;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.evpn.rev180329.ethernet.tag.id.EthernetTagId;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.evpn.rev180329.ethernet.tag.id.EthernetTagIdBuilder;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.evpn.rev180329.evpn.EvpnChoice;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.evpn.rev180329.evpn.evpn.choice.IncMultiEthernetTagResCase;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.evpn.rev180329.evpn.evpn.choice.IncMultiEthernetTagResCaseBuilder;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.evpn.rev180329.inc.multi.ethernet.tag.res.IncMultiEthernetTagRes;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.evpn.rev180329.inc.multi.ethernet.tag.res.IncMultiEthernetTagResBuilder;
  26 import org.opendaylight.yangtools.yang.common.netty.ByteBufUtils;
  27 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
  28 import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
  29
  30 final class IncMultEthTagRParser extends AbstractEvpnNlri {
  31     static final NodeIdentifier INC_MULT_ROUTE_NID = NodeIdentifier.create(IncMultiEthernetTagRes.QNAME);
  32     private static final int CONTENT_LENGTH = 9;
  33     private static final int CONTENT_LENGTH2 = 21;
  34
  35     private static EvpnChoice serializeModel(final ContainerNode evpn) {
  36         final IncMultiEthernetTagResBuilder builder = new IncMultiEthernetTagResBuilder();
  37         builder.setEthernetTagId(extractETI(evpn));
  38         builder.setOrigRouteIp(extractOrigRouteIp(evpn));
  39         return new IncMultiEthernetTagResCaseBuilder().setIncMultiEthernetTagRes(builder.build()).build();
  40     }
  41
  42     @Override
  43     public EvpnChoice parseEvpn(final ByteBuf buffer) {
  44         Preconditions.checkArgument(buffer.readableBytes() == CONTENT_LENGTH
  45                         || buffer.readableBytes() == CONTENT_LENGTH2,
  46                 "Wrong length of array of bytes. Passed: %s ;", buffer);
  47
  48         final EthernetTagId eti = new EthernetTagIdBuilder().setVlanId(ByteBufUtils.readUint32(buffer)).build();
  49         IpAddress ip = IpAddressUtil.addressForByteBuf(buffer);
  50         final IncMultiEthernetTagResBuilder builder = new IncMultiEthernetTagResBuilder()
  51                 .setEthernetTagId(eti).setOrigRouteIp(ip);
  52         return new IncMultiEthernetTagResCaseBuilder().setIncMultiEthernetTagRes(builder.build()).build();
  53     }
  54
  55     @Override
  56     protected NlriType getType() {
  57         return NlriType.IncMultEthTag;
  58     }
  59
  60     @Override
  61     public ByteBuf serializeBody(final EvpnChoice evpnChoice) {
  62         Preconditions.checkArgument(evpnChoice instanceof IncMultiEthernetTagResCase,
  63                 "Unknown evpn instance. Passed %s. Needed IncMultiEthernetTagResCase.",
  64                 evpnChoice.getClass());
  65
  66         final IncMultiEthernetTagRes evpn = ((IncMultiEthernetTagResCase) evpnChoice).getIncMultiEthernetTagRes();
  67         final ByteBuf body = Unpooled.buffer();
  68         ByteBufUtils.writeOrZero(body, evpn.getEthernetTagId().getVlanId());
  69         final ByteBuf orig = IpAddressUtil.bytesFor(evpn.getOrigRouteIp());
  70         Preconditions.checkArgument(orig.readableBytes() > 0);
  71         body.writeBytes(orig);
  72         return body;
  73     }
  74
  75     @Override
  76     public EvpnChoice serializeEvpnModel(final ContainerNode evpn) {
  77         return serializeModel(evpn);
  78     }
  79
  80     @Override
  81     public EvpnChoice createRouteKey(final ContainerNode evpn) {
  82         return serializeModel(evpn);
  83     }
  84 }