bgp/parser-impl/src/main/java/org/opendaylight/protocol/bgp/parser/impl/message/update/extended/communities/RouteOriginAsTwoOctetEcHandler.java

   1 /*
   2  * Copyright (c) 2015 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.parser.impl.message.update.extended.communities;
  10
  11 import com.google.common.base.Preconditions;
  12 import com.google.common.primitives.Ints;
  13 import io.netty.buffer.ByteBuf;
  14 import org.opendaylight.protocol.bgp.parser.BGPDocumentedException;
  15 import org.opendaylight.protocol.bgp.parser.BGPParsingException;
  16 import org.opendaylight.protocol.bgp.parser.spi.extended.community.AbstractTwoOctetAsExtendedCommunity;
  17 import org.opendaylight.protocol.util.ByteArray;
  18 import org.opendaylight.protocol.util.ByteBufWriteUtil;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.ShortAsNumber;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.extended.community.ExtendedCommunity;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.extended.community.extended.community.RouteOriginExtendedCommunityCase;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.extended.community.extended.community.RouteOriginExtendedCommunityCaseBuilder;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.extended.community.extended.community.route.origin.extended.community._case.RouteOriginExtendedCommunity;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.extended.community.extended.community.route.origin.extended.community._case.RouteOriginExtendedCommunityBuilder;
  25
  26 public final class RouteOriginAsTwoOctetEcHandler extends AbstractTwoOctetAsExtendedCommunity {
  27
  28     private static final int SUBTYPE = 3;
  29
  30     @Override
  31     public ExtendedCommunity parseExtendedCommunity(final ByteBuf buffer) throws BGPDocumentedException, BGPParsingException {
  32         final RouteOriginExtendedCommunity targetOrigin = new RouteOriginExtendedCommunityBuilder()
  33             .setGlobalAdministrator(new ShortAsNumber((long) buffer.readUnsignedShort()))
  34             .setLocalAdministrator(ByteArray.readBytes(buffer, AS_LOCAL_ADMIN_LENGTH))
  35             .build();
  36         return new RouteOriginExtendedCommunityCaseBuilder().setRouteOriginExtendedCommunity(targetOrigin).build();
  37     }
  38
  39     @Override
  40     public void serializeExtendedCommunity(final ExtendedCommunity extendedCommunity, final ByteBuf byteAggregator) {
  41         Preconditions.checkArgument(extendedCommunity instanceof RouteOriginExtendedCommunityCase,
  42                 "The extended community %s is not RouteOriginExtendedCommunity type.", extendedCommunity);
  43         final RouteOriginExtendedCommunity routeOrigin = ((RouteOriginExtendedCommunityCase) extendedCommunity).getRouteOriginExtendedCommunity();
  44         ByteBufWriteUtil.writeUnsignedShort(Ints.checkedCast(routeOrigin.getGlobalAdministrator().getValue()), byteAggregator);
  45         byteAggregator.writeBytes(routeOrigin.getLocalAdministrator());
  46     }
  47
  48     @Override
  49     public int getSubType() {
  50         return SUBTYPE;
  51     }
  52 }