bgp/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
   9 package org.opendaylight.protocol.bgp.evpn.impl.nlri;
  10
  11 import static org.opendaylight.protocol.bgp.evpn.impl.nlri.NlriModelUtil.extractETI;
  12 import static org.opendaylight.protocol.bgp.evpn.impl.nlri.NlriModelUtil.extractOrigRouteIp;
  13
  14 import com.google.common.base.Preconditions;
  15 import io.netty.buffer.ByteBuf;
  16 import io.netty.buffer.Unpooled;
  17 import org.opendaylight.bgp.concepts.IpAddressUtil;
  18 import org.opendaylight.protocol.util.ByteBufWriteUtil;
  19 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpAddress;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.evpn.rev180329.NlriType;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.evpn.rev180329.ethernet.tag.id.EthernetTagId;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.evpn.rev180329.ethernet.tag.id.EthernetTagIdBuilder;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.evpn.rev180329.evpn.EvpnChoice;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.evpn.rev180329.evpn.evpn.choice.IncMultiEthernetTagResCase;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.evpn.rev180329.evpn.evpn.choice.IncMultiEthernetTagResCaseBuilder;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.evpn.rev180329.inc.multi.ethernet.tag.res.IncMultiEthernetTagRes;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.evpn.rev180329.inc.multi.ethernet.tag.res.IncMultiEthernetTagResBuilder;
  28 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
  29 import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
  30
  31 final class IncMultEthTagRParser extends AbstractEvpnNlri {
  32     static final NodeIdentifier INC_MULT_ROUTE_NID = new NodeIdentifier(IncMultiEthernetTagRes.QNAME);
  33     private static final int CONTENT_LENGTH = 9;
  34     private static final int CONTENT_LENGTH2 = 21;
  35
  36     private static EvpnChoice serializeModel(final ContainerNode evpn) {
  37         final IncMultiEthernetTagResBuilder builder = new IncMultiEthernetTagResBuilder();
  38         builder.setEthernetTagId(extractETI(evpn));
  39         builder.setOrigRouteIp(extractOrigRouteIp(evpn));
  40         return new IncMultiEthernetTagResCaseBuilder().setIncMultiEthernetTagRes(builder.build()).build();
  41     }
  42
  43     @Override
  44     public EvpnChoice parseEvpn(final ByteBuf buffer) {
  45         Preconditions.checkArgument(buffer.readableBytes() == CONTENT_LENGTH
  46                         || buffer.readableBytes() == CONTENT_LENGTH2,
  47                 "Wrong length of array of bytes. Passed: %s ;", buffer);
  48
  49         final EthernetTagId eti = new EthernetTagIdBuilder().setVlanId(buffer.readUnsignedInt()).build();
  50         IpAddress ip = IpAddressUtil.addressForByteBuf(buffer);
  51         final IncMultiEthernetTagResBuilder builder = new IncMultiEthernetTagResBuilder()
  52                 .setEthernetTagId(eti).setOrigRouteIp(ip);
  53         return new IncMultiEthernetTagResCaseBuilder().setIncMultiEthernetTagRes(builder.build()).build();
  54     }
  55
  56     @Override
  57     protected NlriType getType() {
  58         return NlriType.IncMultEthTag;
  59     }
  60
  61     @Override
  62     public ByteBuf serializeBody(final EvpnChoice evpnChoice) {
  63         Preconditions.checkArgument(evpnChoice instanceof IncMultiEthernetTagResCase,
  64                 "Unknown evpn instance. Passed %s. Needed IncMultiEthernetTagResCase.",
  65                 evpnChoice.getClass());
  66
  67         final IncMultiEthernetTagRes evpn = ((IncMultiEthernetTagResCase) evpnChoice).getIncMultiEthernetTagRes();
  68         final ByteBuf body = Unpooled.buffer();
  69         ByteBufWriteUtil.writeUnsignedInt(evpn.getEthernetTagId().getVlanId(), body);
  70         final ByteBuf orig = IpAddressUtil.bytesFor(evpn.getOrigRouteIp());
  71         Preconditions.checkArgument(orig.readableBytes() > 0);
  72         body.writeBytes(orig);
  73         return body;
  74     }
  75
  76     @Override
  77     public EvpnChoice serializeEvpnModel(final ContainerNode evpn) {
  78         return serializeModel(evpn);
  79     }
  80
  81     @Override
  82     public EvpnChoice createRouteKey(final ContainerNode evpn) {
  83         return serializeModel(evpn);
  84     }
  85 }