bgp/openconfig-rp-statement/src/main/java/org/opendaylight/protocol/bgp/openconfig/routing/policy/statement/AbstractExtCommunityHandler.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;
  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 java.util.stream.Collectors;
  21 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  22 import org.opendaylight.controller.md.sal.binding.api.ReadOnlyTransaction;
  23 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  24 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.policy.rev151009.DefinedSets1;
  25 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.policy.rev151009.routing.policy.defined.sets.BgpDefinedSets;
  26 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.policy.rev151009.routing.policy.defined.sets.bgp.defined.sets.ExtCommunitySets;
  27 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.policy.rev151009.routing.policy.defined.sets.bgp.defined.sets.ext.community.sets.ExtCommunitySet;
  28 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.policy.rev151009.routing.policy.defined.sets.bgp.defined.sets.ext.community.sets.ExtCommunitySetKey;
  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.rev171207.path.attributes.attributes.ExtendedCommunities;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev171207.path.attributes.attributes.ExtendedCommunitiesBuilder;
  33 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  34
  35 public class AbstractExtCommunityHandler {
  36     private static final InstanceIdentifier<ExtCommunitySets> EXT_COMMUNITY_SETS_IID
  37             = InstanceIdentifier.create(RoutingPolicy.class).child(DefinedSets.class)
  38             .augmentation(DefinedSets1.class).child(BgpDefinedSets.class)
  39             .child(ExtCommunitySets.class);
  40     private final DataBroker databroker;
  41     protected final LoadingCache<String, List<ExtendedCommunities>> extCommunitySets = CacheBuilder.newBuilder()
  42             .build(new CacheLoader<String, List<ExtendedCommunities>>() {
  43                 @Override
  44                 public List<ExtendedCommunities> load(final String key)
  45                         throws ExecutionException, InterruptedException {
  46                     return loadCommunitySet(key);
  47                 }
  48             });
  49
  50     public AbstractExtCommunityHandler(final DataBroker databroker) {
  51         this.databroker = requireNonNull(databroker);
  52     }
  53
  54     private List<ExtendedCommunities> loadCommunitySet(final String key)
  55             throws ExecutionException, InterruptedException {
  56         final ReadOnlyTransaction tr = this.databroker.newReadOnlyTransaction();
  57         final Optional<ExtCommunitySet> result =
  58                 tr.read(LogicalDatastoreType.CONFIGURATION, EXT_COMMUNITY_SETS_IID
  59                         .child(ExtCommunitySet.class, new ExtCommunitySetKey(key))).get();
  60         if (!result.isPresent()) {
  61             return Collections.emptyList();
  62         }
  63         return result.get().getExtCommunityMember()
  64                 .stream().map(ge -> new ExtendedCommunitiesBuilder().setExtendedCommunity(ge.getExtendedCommunity())
  65                         .setTransitive(ge.isTransitive()).build()).collect(Collectors.toList());
  66     }
  67 }