bgp/openconfig-rp-statement/src/main/java/org/opendaylight/protocol/bgp/openconfig/routing/policy/statement/conditions/MatchExtCommunitySetHandler.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 package org.opendaylight.protocol.bgp.openconfig.routing.policy.statement.conditions;
   9
  10 import java.util.Collections;
  11 import java.util.List;
  12 import org.apache.commons.lang3.StringUtils;
  13 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  14 import org.opendaylight.protocol.bgp.openconfig.routing.policy.spi.RouteEntryBaseAttributes;
  15 import org.opendaylight.protocol.bgp.openconfig.routing.policy.spi.policy.condition.BgpConditionsPolicy;
  16 import org.opendaylight.protocol.bgp.openconfig.routing.policy.statement.AbstractExtCommunityHandler;
  17 import org.opendaylight.protocol.bgp.rib.spi.policy.BGPRouteEntryExportParameters;
  18 import org.opendaylight.protocol.bgp.rib.spi.policy.BGPRouteEntryImportParameters;
  19 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.policy.rev151009.bgp.match.conditions.MatchExtCommunitySet;
  20 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.policy.types.rev151009.MatchSetOptionsType;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev180329.path.attributes.Attributes;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev180329.path.attributes.attributes.ExtendedCommunities;
  23
  24 /**
  25  * Math a set of External Communities (ALL, ANY, INVERT).
  26  */
  27 public final class MatchExtCommunitySetHandler extends AbstractExtCommunityHandler
  28         implements BgpConditionsPolicy<MatchExtCommunitySet, List<ExtendedCommunities>> {
  29
  30     public MatchExtCommunitySetHandler(final DataBroker databroker) {
  31         super(databroker);
  32     }
  33
  34     private boolean matchCondition(final List<ExtendedCommunities> extendedCommunities,
  35             final String matchExtCommunitySetName, final MatchSetOptionsType matchSetOptions) {
  36
  37         final String setKey = StringUtils
  38                 .substringBetween(matchExtCommunitySetName, "=\"", "\"");
  39         final List<ExtendedCommunities> extCommunityfilter = this.extCommunitySets.getUnchecked(setKey);
  40
  41         if (extCommunityfilter == null || extCommunityfilter.isEmpty()) {
  42             return false;
  43         }
  44
  45         List<ExtendedCommunities> extCommList;
  46         if (extendedCommunities == null) {
  47             extCommList = Collections.emptyList();
  48         } else {
  49             extCommList = extendedCommunities;
  50         }
  51
  52
  53         if (matchSetOptions.equals(MatchSetOptionsType.ALL)) {
  54             return extCommList.containsAll(extCommunityfilter)
  55                     && extCommunityfilter.containsAll(extCommList);
  56         }
  57         final boolean noneInCommon = Collections.disjoint(extCommList, extCommunityfilter);
  58         if (matchSetOptions.equals(MatchSetOptionsType.ANY)) {
  59             return !noneInCommon;
  60         }
  61         //(matchSetOptions.equals(MatchSetOptionsType.INVERT))
  62         return noneInCommon;
  63     }
  64
  65     @Override
  66     public boolean matchImportCondition(
  67             final RouteEntryBaseAttributes routeEntryInfo,
  68             final BGPRouteEntryImportParameters routeEntryImportParameters,
  69             final List<ExtendedCommunities> extendedCommunities,
  70             final MatchExtCommunitySet conditions) {
  71         return matchCondition(extendedCommunities, conditions.getExtCommunitySet(),
  72                 conditions.getMatchSetOptions());
  73     }
  74
  75     @Override
  76     public boolean matchExportCondition(
  77             final RouteEntryBaseAttributes routeEntryInfo,
  78             final BGPRouteEntryExportParameters routeEntryExportParameters,
  79             final List<ExtendedCommunities> extendedCommunities,
  80             final MatchExtCommunitySet conditions) {
  81         return matchCondition(extendedCommunities, conditions.getExtCommunitySet(),
  82                 conditions.getMatchSetOptions());
  83     }
  84
  85     @Override
  86     public List<ExtendedCommunities> getConditionParameter(final Attributes attributes) {
  87         return attributes.getExtendedCommunities();
  88     }
  89 }