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
   9 package org.opendaylight.protocol.bgp.openconfig.routing.policy.statement.conditions;
  10
  11 import static java.util.Objects.requireNonNull;
  12
  13 import com.google.common.base.Optional;
  14 import com.google.common.cache.CacheBuilder;
  15 import com.google.common.cache.CacheLoader;
  16 import com.google.common.cache.LoadingCache;
  17 import java.util.ArrayList;
  18 import java.util.Collections;
  19 import java.util.List;
  20 import java.util.concurrent.ExecutionException;
  21 import org.apache.commons.lang3.StringUtils;
  22 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  23 import org.opendaylight.controller.md.sal.binding.api.ReadOnlyTransaction;
  24 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  25 import org.opendaylight.protocol.bgp.openconfig.routing.policy.spi.RouteEntryBaseAttributes;
  26 import org.opendaylight.protocol.bgp.openconfig.routing.policy.spi.policy.condition.BgpConditionsAugmentationPolicy;
  27 import org.opendaylight.protocol.bgp.rib.spi.policy.BGPRouteEntryExportParameters;
  28 import org.opendaylight.protocol.bgp.rib.spi.policy.BGPRouteEntryImportParameters;
  29 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.policy.rev151009.DefinedSets1;
  30 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.policy.rev151009.routing.policy.defined.sets.BgpDefinedSets;
  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.rev171207.path.attributes.Attributes;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev171207.path.attributes.attributes.ClusterId;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.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 ReadOnlyTransaction 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.orNull();
  71     }
  72
  73     @Override
  74     public boolean matchImportCondition(
  75             final RouteEntryBaseAttributes routeEntryInfo,
  76             final BGPRouteEntryImportParameters importParameters,
  77             final ClusterId clusterIdAtt,
  78             final MatchClusterIdSetCondition conditions) {
  79         final ClusterIdentifier clusterIdLocal = importParameters.getFromClusterId() == null
  80                 ? routeEntryInfo.getClusterId() : importParameters.getFromClusterId();
  81         return matchClusterIdCondition(clusterIdLocal, clusterIdAtt,
  82                 conditions.getMatchClusterIdSetCondition());
  83     }
  84
  85     @Override
  86     public boolean matchExportCondition(
  87             final RouteEntryBaseAttributes routeEntryInfo,
  88             final BGPRouteEntryExportParameters exportParameters,
  89             final ClusterId clusterIdAtt,
  90             final MatchClusterIdSetCondition conditions) {
  91         final ClusterIdentifier clusterIdLocal = exportParameters.getFromClusterId() == null
  92                 ? routeEntryInfo.getClusterId() : exportParameters.getFromClusterId();
  93         return matchClusterIdCondition(clusterIdLocal, clusterIdAtt,
  94                 conditions.getMatchClusterIdSetCondition());
  95     }
  96
  97     @Override
  98     public ClusterId getConditionParameter(final Attributes attributes) {
  99         return attributes.getClusterId();
 100     }
 101
 102     private boolean matchClusterIdCondition(
 103             final ClusterIdentifier localClusterId,
 104             final ClusterId clusterId, final org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.odl
 105             .bgp._default.policy.rev180329.match.cluster.id.set.condition.grouping
 106             .MatchClusterIdSetCondition matchClusterIdSetCondition) {
 107         final ClusterIdSet clusterIdSet = this.sets.getUnchecked(StringUtils
 108                 .substringBetween(matchClusterIdSetCondition.getClusterIdSet(), "=\"", "\""));
 109
 110         if (clusterIdSet == null) {
 111             return false;
 112         }
 113         final MatchSetOptionsType matchOption = matchClusterIdSetCondition.getMatchSetOptions();
 114
 115         if (clusterId != null) {
 116             List<ClusterIdentifier> newList = new ArrayList<>();
 117             if (clusterIdSet.getClusterId() != null) {
 118                 newList.addAll(clusterIdSet.getClusterId());
 119             }
 120             if (clusterIdSet.getLocal() != null) {
 121                 newList.add(localClusterId);
 122             }
 123
 124             final List<ClusterIdentifier> matchClusterList = clusterId.getCluster();
 125             if (matchOption.equals(MatchSetOptionsType.ALL)) {
 126                 return matchClusterList.containsAll(newList) && newList.containsAll(matchClusterList);
 127             }
 128             final boolean noneInCommon = Collections.disjoint(matchClusterList, newList);
 129             if (matchOption.equals(MatchSetOptionsType.ANY)) {
 130                 return !noneInCommon;
 131             } else if (matchOption.equals(MatchSetOptionsType.INVERT)) {
 132                 return noneInCommon;
 133             }
 134         } else if (matchOption.equals(MatchSetOptionsType.INVERT)) {
 135             return true;
 136         }
 137         return false;
 138     }
 139 }