bgp/openconfig-rp-statement/src/main/java/org/opendaylight/protocol/bgp/openconfig/routing/policy/statement/conditions/MatchCommunitySetHandler.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.openconfig.routing.policy.statement.conditions;
  10
  11 import java.util.Collections;
  12 import java.util.List;
  13 import org.apache.commons.lang3.StringUtils;
  14 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  15 import org.opendaylight.protocol.bgp.openconfig.routing.policy.spi.RouteEntryBaseAttributes;
  16 import org.opendaylight.protocol.bgp.openconfig.routing.policy.spi.policy.condition.BgpConditionsPolicy;
  17 import org.opendaylight.protocol.bgp.openconfig.routing.policy.statement.AbstractCommunityHandler;
  18 import org.opendaylight.protocol.bgp.rib.spi.policy.BGPRouteEntryExportParameters;
  19 import org.opendaylight.protocol.bgp.rib.spi.policy.BGPRouteEntryImportParameters;
  20 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.policy.rev151009.bgp.match.conditions.MatchCommunitySet;
  21 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.types.rev151009.AfiSafiType;
  22 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.policy.types.rev151009.MatchSetOptionsType;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev180329.path.attributes.Attributes;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev180329.path.attributes.attributes.Communities;
  25
  26 /**
  27  * Match a set of Communities (ALL, ANY, INVERT).
  28  */
  29 public final class MatchCommunitySetHandler
  30         extends AbstractCommunityHandler implements BgpConditionsPolicy<MatchCommunitySet, List<Communities>> {
  31     public MatchCommunitySetHandler(final DataBroker databroker) {
  32         super(databroker);
  33     }
  34
  35
  36     @Override
  37     public boolean matchImportCondition(
  38             final Class<? extends AfiSafiType> afiSafi,
  39             final RouteEntryBaseAttributes routeEntryInfo,
  40             final BGPRouteEntryImportParameters routeEntryImportParameters,
  41             final List<Communities> communities,
  42             final MatchCommunitySet conditions) {
  43         return matchCondition(communities, conditions.getCommunitySet(), conditions.getMatchSetOptions());
  44     }
  45
  46     @Override
  47     public boolean matchExportCondition(
  48             final Class<? extends AfiSafiType> afiSafi,
  49             final RouteEntryBaseAttributes routeEntryInfo,
  50             final BGPRouteEntryExportParameters routeEntryExportParameters,
  51             final List<Communities> communities,
  52             final MatchCommunitySet conditions) {
  53         return matchCondition(communities, conditions.getCommunitySet(), conditions.getMatchSetOptions());
  54     }
  55
  56     @Override
  57     public List<Communities> getConditionParameter(final Attributes attributes) {
  58         return attributes.getCommunities();
  59     }
  60
  61     private boolean matchCondition(
  62             final List<org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev180329.path
  63                     .attributes.attributes.Communities> communities,
  64             final String communitySetName,
  65             final MatchSetOptionsType matchSetOptions) {
  66
  67         final String setKey = StringUtils
  68                 .substringBetween(communitySetName, "=\"", "\"");
  69         final List<Communities> communityFilter = this.communitySets.getUnchecked(setKey);
  70
  71         if (communityFilter == null || communityFilter.isEmpty()) {
  72             return false;
  73         }
  74
  75         List<Communities> commAttributeList;
  76         if (communities == null) {
  77             commAttributeList = Collections.emptyList();
  78         } else {
  79             commAttributeList = communities;
  80         }
  81
  82         if (matchSetOptions.equals(MatchSetOptionsType.ALL)) {
  83             return commAttributeList.containsAll(communityFilter)
  84                     && communityFilter.containsAll(commAttributeList);
  85         }
  86         final boolean noneInCommon = Collections.disjoint(commAttributeList, communityFilter);
  87
  88         if (matchSetOptions.equals(MatchSetOptionsType.ANY)) {
  89             return !noneInCommon;
  90         }
  91         //(matchSetOptions.equals(MatchSetOptionsType.INVERT))
  92         return noneInCommon;
  93     }
  94 }