bgp/openconfig-rp-statement/src/main/java/org/opendaylight/protocol/bgp/openconfig/routing/policy/statement/AbstractCommunityHandler.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;
   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 com.google.common.util.concurrent.FluentFuture;
  16 import java.util.List;
  17 import java.util.Optional;
  18 import java.util.concurrent.ExecutionException;
  19 import java.util.stream.Collectors;
  20 import org.opendaylight.mdsal.binding.api.DataBroker;
  21 import org.opendaylight.mdsal.binding.api.ReadTransaction;
  22 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
  23 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.policy.rev151009.DefinedSets1;
  24 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.policy.rev151009.routing.policy.defined.sets.BgpDefinedSets;
  25 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.policy.rev151009.routing.policy.defined.sets.bgp.defined.sets.CommunitySets;
  26 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.policy.rev151009.routing.policy.defined.sets.bgp.defined.sets.community.sets.CommunitySet;
  27 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.policy.rev151009.routing.policy.defined.sets.bgp.defined.sets.community.sets.CommunitySetKey;
  28 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.routing.policy.rev151009.OpenconfigRoutingPolicyData;
  29 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.routing.policy.rev151009.routing.policy.top.RoutingPolicy;
  30 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.routing.policy.rev151009.routing.policy.top.routing.policy.DefinedSets;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev200120.path.attributes.attributes.Communities;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev200120.path.attributes.attributes.CommunitiesBuilder;
  33 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  34
  35 public class AbstractCommunityHandler {
  36     private static final InstanceIdentifier<CommunitySets> COMMUNITY_SETS_IID =
  37         InstanceIdentifier.builderOfInherited(OpenconfigRoutingPolicyData.class, RoutingPolicy.class).build()
  38             .child(DefinedSets.class)
  39             .augmentation(DefinedSets1.class)
  40             .child(BgpDefinedSets.class)
  41             .child(CommunitySets.class);
  42     protected final LoadingCache<String, List<Communities>> communitySets;
  43
  44     public AbstractCommunityHandler(final DataBroker dataBroker) {
  45         requireNonNull(dataBroker);
  46         communitySets = CacheBuilder.newBuilder()
  47             .build(new CacheLoader<String, List<Communities>>() {
  48                 @Override
  49                 public List<Communities> load(final String key) throws ExecutionException, InterruptedException {
  50                     final FluentFuture<Optional<CommunitySet>> future;
  51                     try (ReadTransaction tr = dataBroker.newReadOnlyTransaction()) {
  52                         future = tr.read(LogicalDatastoreType.CONFIGURATION,
  53                             COMMUNITY_SETS_IID.child(CommunitySet.class, new CommunitySetKey(key)));
  54                     }
  55
  56                     return future.get().map(set -> set.nonnullCommunities().stream()
  57                         .map(ge -> new CommunitiesBuilder()
  58                             .setAsNumber(ge.getAsNumber())
  59                             .setSemantics(ge.getSemantics())
  60                             .build())
  61                         .collect(Collectors.toUnmodifiableList()))
  62                         .orElse(List.of());
  63                 }
  64             });
  65     }
  66 }