bgp/openconfig-rp-statement/src/main/java/org/opendaylight/protocol/bgp/openconfig/routing/policy/statement/conditions/MatchClusterIdSetHandler.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 static java.util.Objects.requireNonNull;
  11
  12 import com.google.common.cache.CacheBuilder;
  13 import com.google.common.cache.CacheLoader;
  14 import com.google.common.cache.LoadingCache;
  15 import java.util.ArrayList;
  16 import java.util.Collections;
  17 import java.util.List;
  18 import java.util.Optional;
  19 import java.util.concurrent.ExecutionException;
  20 import org.apache.commons.lang3.StringUtils;
  21 import org.opendaylight.mdsal.binding.api.DataBroker;
  22 import org.opendaylight.mdsal.binding.api.ReadTransaction;
  23 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
  24 import org.opendaylight.protocol.bgp.openconfig.routing.policy.spi.RouteEntryBaseAttributes;
  25 import org.opendaylight.protocol.bgp.openconfig.routing.policy.spi.policy.condition.BgpConditionsAugmentationPolicy;
  26 import org.opendaylight.protocol.bgp.rib.spi.policy.BGPRouteEntryExportParameters;
  27 import org.opendaylight.protocol.bgp.rib.spi.policy.BGPRouteEntryImportParameters;
  28 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.policy.rev151009.DefinedSets1;
  29 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.policy.rev151009.routing.policy.defined.sets.BgpDefinedSets;
  30 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.types.rev151009.AfiSafiType;
  31 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.policy.types.rev151009.MatchSetOptionsType;
  32 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.routing.policy.rev151009.routing.policy.top.RoutingPolicy;
  33 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.routing.policy.rev151009.routing.policy.top.routing.policy.DefinedSets;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev180329.path.attributes.Attributes;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev180329.path.attributes.attributes.ClusterId;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev180329.ClusterIdentifier;
  37 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.odl.bgp._default.policy.rev180329.BgpClusterIdSets;
  38 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.odl.bgp._default.policy.rev180329.MatchClusterIdSetCondition;
  39 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.odl.bgp._default.policy.rev180329.cluster.id.set.ClusterIdSet;
  40 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.odl.bgp._default.policy.rev180329.cluster.id.set.ClusterIdSetKey;
  41 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.odl.bgp._default.policy.rev180329.routing.policy.defined.sets.bgp.defined.sets.ClusterIdSets;
  42 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  43
  44 /**
  45  * Match a set of Cluster Id(ALL, NAY, INVERT).
  46  */
  47 public final class MatchClusterIdSetHandler
  48         implements BgpConditionsAugmentationPolicy<MatchClusterIdSetCondition, ClusterId> {
  49     private static final InstanceIdentifier<ClusterIdSets> CLUSTERS_ID_SETS_IID
  50             = InstanceIdentifier.create(RoutingPolicy.class).child(DefinedSets.class)
  51             .augmentation(DefinedSets1.class).child(BgpDefinedSets.class)
  52             .augmentation(BgpClusterIdSets.class).child(ClusterIdSets.class);
  53     private final DataBroker dataBroker;
  54     private final LoadingCache<String, ClusterIdSet> sets = CacheBuilder.newBuilder()
  55             .build(new CacheLoader<String, ClusterIdSet>() {
  56                 @Override
  57                 public ClusterIdSet load(final String key) throws ExecutionException, InterruptedException {
  58                     return loadSets(key);
  59                 }
  60             });
  61
  62     public MatchClusterIdSetHandler(final DataBroker dataBroker) {
  63         this.dataBroker = requireNonNull(dataBroker);
  64     }
  65
  66     private ClusterIdSet loadSets(final String key) throws ExecutionException, InterruptedException {
  67         final ReadTransaction tr = this.dataBroker.newReadOnlyTransaction();
  68         final Optional<ClusterIdSet> result = tr.read(LogicalDatastoreType.CONFIGURATION,
  69                 CLUSTERS_ID_SETS_IID.child(ClusterIdSet.class, new ClusterIdSetKey(key))).get();
  70         return result.orElse(null);
  71     }
  72
  73     @Override
  74     public boolean matchImportCondition(
  75             final Class<? extends AfiSafiType> afiSafi,
  76             final RouteEntryBaseAttributes routeEntryInfo,
  77             final BGPRouteEntryImportParameters importParameters,
  78             final ClusterId clusterIdAtt,
  79             final MatchClusterIdSetCondition conditions) {
  80         final ClusterIdentifier clusterIdLocal = importParameters.getFromClusterId() == null
  81                 ? routeEntryInfo.getClusterId() : importParameters.getFromClusterId();
  82         return matchClusterIdCondition(clusterIdLocal, clusterIdAtt,
  83                 conditions.getMatchClusterIdSetCondition());
  84     }
  85
  86     @Override
  87     public boolean matchExportCondition(
  88             final Class<? extends AfiSafiType> afiSafi,
  89             final RouteEntryBaseAttributes routeEntryInfo,
  90             final BGPRouteEntryExportParameters exportParameters,
  91             final ClusterId clusterIdAtt,
  92             final MatchClusterIdSetCondition conditions) {
  93         final ClusterIdentifier clusterIdLocal = exportParameters.getFromClusterId() == null
  94                 ? routeEntryInfo.getClusterId() : exportParameters.getFromClusterId();
  95         return matchClusterIdCondition(clusterIdLocal, clusterIdAtt,
  96                 conditions.getMatchClusterIdSetCondition());
  97     }
  98
  99     @Override
 100     public ClusterId getConditionParameter(final Attributes attributes) {
 101         return attributes.getClusterId();
 102     }
 103
 104     private boolean matchClusterIdCondition(
 105             final ClusterIdentifier localClusterId,
 106             final ClusterId clusterId, final org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.odl
 107             .bgp._default.policy.rev180329.match.cluster.id.set.condition.grouping
 108             .MatchClusterIdSetCondition matchClusterIdSetCondition) {
 109         final ClusterIdSet clusterIdSet = this.sets.getUnchecked(StringUtils
 110                 .substringBetween(matchClusterIdSetCondition.getClusterIdSet(), "=\"", "\""));
 111
 112         if (clusterIdSet == null) {
 113             return false;
 114         }
 115         final MatchSetOptionsType matchOption = matchClusterIdSetCondition.getMatchSetOptions();
 116
 117         if (clusterId != null) {
 118             List<ClusterIdentifier> newList = new ArrayList<>();
 119             if (clusterIdSet.getClusterId() != null) {
 120                 newList.addAll(clusterIdSet.getClusterId());
 121             }
 122             if (clusterIdSet.getLocal() != null) {
 123                 newList.add(localClusterId);
 124             }
 125
 126             final List<ClusterIdentifier> matchClusterList = clusterId.getCluster();
 127             if (matchOption.equals(MatchSetOptionsType.ALL)) {
 128                 return matchClusterList.containsAll(newList) && newList.containsAll(matchClusterList);
 129             }
 130             final boolean noneInCommon = Collections.disjoint(matchClusterList, newList);
 131             if (matchOption.equals(MatchSetOptionsType.ANY)) {
 132                 return !noneInCommon;
 133             } else if (matchOption.equals(MatchSetOptionsType.INVERT)) {
 134                 return noneInCommon;
 135             }
 136         } else if (matchOption.equals(MatchSetOptionsType.INVERT)) {
 137             return true;
 138         }
 139         return false;
 140     }
 141 }