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.policy.types.rev151009.MatchSetOptionsType;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev171207.path.attributes.Attributes;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev171207.path.attributes.attributes.Communities;
  24
  25 /**
  26  * Match a set of Communities (ALL, ANY, INVERT).
  27  */
  28 public final class MatchCommunitySetHandler
  29         extends AbstractCommunityHandler implements BgpConditionsPolicy<MatchCommunitySet, List<Communities>> {
  30     public MatchCommunitySetHandler(final DataBroker databroker) {
  31         super(databroker);
  32     }
  33
  34
  35     @Override
  36     public boolean matchImportCondition(
  37             final RouteEntryBaseAttributes routeEntryInfo,
  38             final BGPRouteEntryImportParameters routeEntryImportParameters,
  39             final List<Communities> communities,
  40             final MatchCommunitySet conditions) {
  41         return matchCondition(communities, conditions.getCommunitySet(), conditions.getMatchSetOptions());
  42     }
  43
  44     @Override
  45     public boolean matchExportCondition(
  46             final RouteEntryBaseAttributes routeEntryInfo,
  47             final BGPRouteEntryExportParameters routeEntryExportParameters,
  48             final List<Communities> communities,
  49             final MatchCommunitySet conditions) {
  50         return matchCondition(communities, conditions.getCommunitySet(), conditions.getMatchSetOptions());
  51     }
  52
  53     @Override
  54     public List<Communities> getConditionParameter(final Attributes attributes) {
  55         return attributes.getCommunities();
  56     }
  57
  58     private boolean matchCondition(
  59             final List<org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev171207.path
  60                     .attributes.attributes.Communities> communities,
  61             final String communitySetName,
  62             final MatchSetOptionsType matchSetOptions) {
  63
  64         final String setKey = StringUtils
  65                 .substringBetween(communitySetName, "=\"", "\"");
  66         final List<Communities> communityFilter = this.communitySets.getUnchecked(setKey);
  67
  68         if (communityFilter == null || communityFilter.isEmpty()) {
  69             return false;
  70         }
  71
  72         List<Communities> commAttributeList;
  73         if (communities == null) {
  74             commAttributeList = Collections.emptyList();
  75         } else {
  76             commAttributeList = communities;
  77         }
  78
  79         if (matchSetOptions.equals(MatchSetOptionsType.ALL)) {
  80             return commAttributeList.containsAll(communityFilter)
  81                     && communityFilter.containsAll(commAttributeList);
  82         }
  83         final boolean noneInCommon = Collections.disjoint(commAttributeList, communityFilter);
  84
  85         if (matchSetOptions.equals(MatchSetOptionsType.ANY)) {
  86             return !noneInCommon;
  87         }
  88         //(matchSetOptions.equals(MatchSetOptionsType.INVERT))
  89         return noneInCommon;
  90     }
  91 }