bgp/openconfig-rp-statement/src/main/java/org/opendaylight/protocol/bgp/openconfig/routing/policy/statement/conditions/MatchRoleSetHandler.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.Collections;
  18 import java.util.List;
  19 import java.util.concurrent.ExecutionException;
  20 import javax.annotation.Nonnull;
  21 import javax.annotation.Nullable;
  22 import org.apache.commons.lang3.StringUtils;
  23 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  24 import org.opendaylight.controller.md.sal.binding.api.ReadOnlyTransaction;
  25 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  26 import org.opendaylight.protocol.bgp.openconfig.routing.policy.spi.RouteEntryBaseAttributes;
  27 import org.opendaylight.protocol.bgp.openconfig.routing.policy.spi.policy.condition.BgpConditionsAugmentationPolicy;
  28 import org.opendaylight.protocol.bgp.rib.spi.policy.BGPRouteEntryExportParameters;
  29 import org.opendaylight.protocol.bgp.rib.spi.policy.BGPRouteEntryImportParameters;
  30 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.policy.rev151009.DefinedSets1;
  31 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.policy.rev151009.routing.policy.defined.sets.BgpDefinedSets;
  32 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.policy.types.rev151009.MatchSetOptionsRestrictedType;
  33 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.routing.policy.rev151009.routing.policy.top.RoutingPolicy;
  34 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.routing.policy.rev151009.routing.policy.top.routing.policy.DefinedSets;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev171207.path.attributes.Attributes;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev171207.PeerRole;
  37 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.odl.bgp._default.policy.rev180109.BgpRoleSets;
  38 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.odl.bgp._default.policy.rev180109.MatchRoleSetCondition;
  39 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.odl.bgp._default.policy.rev180109.MatchSetDirectionOptionsType;
  40 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.odl.bgp._default.policy.rev180109.match.role.set.condition.grouping.MatchRoleSet;
  41 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.odl.bgp._default.policy.rev180109.role.set.RoleSet;
  42 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.odl.bgp._default.policy.rev180109.role.set.RoleSetKey;
  43 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.odl.bgp._default.policy.rev180109.routing.policy.defined.sets.bgp.defined.sets.RoleSets;
  44 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  45
  46 /**
  47  * Match a Peer Role (FROM, TO).
  48  */
  49 public final class MatchRoleSetHandler implements BgpConditionsAugmentationPolicy<MatchRoleSetCondition, Void> {
  50     private static final InstanceIdentifier<RoleSets> ROLE_SET_IID
  51             = InstanceIdentifier.create(RoutingPolicy.class).child(DefinedSets.class)
  52             .augmentation(DefinedSets1.class).child(BgpDefinedSets.class)
  53             .augmentation(BgpRoleSets.class).child(RoleSets.class);
  54     private final DataBroker dataBroker;
  55     private final LoadingCache<String, List<PeerRole>> roleSets = CacheBuilder.newBuilder()
  56             .build(new CacheLoader<String, List<PeerRole>>() {
  57                 @Override
  58                 public List<PeerRole> load(final String key) throws ExecutionException, InterruptedException {
  59                     return loadRoleSets(key);
  60                 }
  61             });
  62
  63     public MatchRoleSetHandler(final DataBroker dataBroker) {
  64         this.dataBroker = requireNonNull(dataBroker);
  65     }
  66
  67     private boolean matchRoleCondition(final MatchRoleSet roleMatch, @Nonnull final PeerRole role) {
  68         final List<PeerRole> roles = this.roleSets.getUnchecked(StringUtils
  69                 .substringBetween(roleMatch.getRoleSet(), "=\"", "\""));
  70         final boolean found = roles.contains(role);
  71         if (roleMatch.getMatchSetOptions().equals(MatchSetOptionsRestrictedType.ANY)) {
  72             return found;
  73         }
  74         //INVERT Case
  75         return !found;
  76     }
  77
  78     private List<PeerRole> loadRoleSets(final String key) throws ExecutionException, InterruptedException {
  79         final ReadOnlyTransaction tr = this.dataBroker.newReadOnlyTransaction();
  80         final Optional<RoleSet> result = tr.read(LogicalDatastoreType.CONFIGURATION,
  81                 ROLE_SET_IID.child(RoleSet.class, new RoleSetKey(key))).get();
  82         if (!result.isPresent()) {
  83             return Collections.emptyList();
  84         }
  85         return result.get().getRole();
  86     }
  87
  88     @Override
  89     public boolean matchImportCondition(
  90             final RouteEntryBaseAttributes routeEntryInfo,
  91             final BGPRouteEntryImportParameters routeEntryImportParameters,
  92             final Void attributes,
  93             final MatchRoleSetCondition conditions) {
  94
  95         final List<MatchRoleSet> neighCond = conditions.getMatchRoleSet();
  96
  97         for (final MatchRoleSet roleMatch : neighCond) {
  98             if (roleMatch.getMatchSetDirectionOptions().equals(MatchSetDirectionOptionsType.TO)) {
  99                 return false;
 100             } else {
 101                 if (!matchRoleCondition(roleMatch, routeEntryImportParameters.getFromPeerRole())) {
 102                     return false;
 103                 }
 104             }
 105         }
 106         return true;
 107     }
 108
 109     @Override
 110     public boolean matchExportCondition(
 111             final RouteEntryBaseAttributes routeEntryInfo,
 112             final BGPRouteEntryExportParameters routeEntryExportParameters,
 113             final Void attributes,
 114             final MatchRoleSetCondition conditions) {
 115         final List<MatchRoleSet> neighCond = conditions.getMatchRoleSet();
 116
 117         for (final MatchRoleSet roleMatch : neighCond) {
 118             PeerRole role;
 119             if (roleMatch.getMatchSetDirectionOptions().equals(MatchSetDirectionOptionsType.TO)) {
 120                 role = routeEntryExportParameters.getToPeerRole();
 121             } else {
 122                 role = routeEntryExportParameters.getFromPeerRole();
 123             }
 124             if (!matchRoleCondition(roleMatch, role)) {
 125                 return false;
 126             }
 127         }
 128         return true;
 129     }
 130
 131     @Nullable
 132     @Override
 133     public Void getConditionParameter(@Nonnull final Attributes attributes) {
 134         return null;
 135     }
 136 }