opendaylight/md-sal/eos-dom-akka/src/main/java/org/opendaylight/controller/eos/akka/registry/candidate/CandidateRegistry.java

   1 /*
   2  * Copyright (c) 2021 PANTHEON.tech, s.r.o. and others.  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.controller.eos.akka.registry.candidate;
   9
  10 import akka.actor.typed.Behavior;
  11 import akka.actor.typed.javadsl.AbstractBehavior;
  12 import akka.actor.typed.javadsl.ActorContext;
  13 import akka.actor.typed.javadsl.Behaviors;
  14 import akka.actor.typed.javadsl.Receive;
  15 import akka.cluster.ddata.Key;
  16 import akka.cluster.ddata.ORMap;
  17 import akka.cluster.ddata.ORMapKey;
  18 import akka.cluster.ddata.ORSet;
  19 import akka.cluster.ddata.SelfUniqueAddress;
  20 import akka.cluster.ddata.typed.javadsl.DistributedData;
  21 import akka.cluster.ddata.typed.javadsl.Replicator;
  22 import akka.cluster.ddata.typed.javadsl.ReplicatorMessageAdapter;
  23 import org.opendaylight.controller.eos.akka.registry.candidate.command.CandidateRegistryCommand;
  24 import org.opendaylight.controller.eos.akka.registry.candidate.command.InternalUpdateResponse;
  25 import org.opendaylight.controller.eos.akka.registry.candidate.command.RegisterCandidate;
  26 import org.opendaylight.controller.eos.akka.registry.candidate.command.UnregisterCandidate;
  27 import org.opendaylight.mdsal.eos.dom.api.DOMEntity;
  28 import org.slf4j.Logger;
  29 import org.slf4j.LoggerFactory;
  30
  31 /**
  32  * Actor responsible for handling registrations of candidates into distributed-data.
  33  */
  34 public final class CandidateRegistry extends AbstractBehavior<CandidateRegistryCommand> {
  35
  36     private static final Logger LOG = LoggerFactory.getLogger(CandidateRegistry.class);
  37
  38     public static final Key<ORMap<DOMEntity, ORSet<String>>> KEY = new ORMapKey<>("candidateRegistry");
  39
  40     private final ReplicatorMessageAdapter<CandidateRegistryCommand, ORMap<DOMEntity, ORSet<String>>> replicatorAdapter;
  41     private final SelfUniqueAddress node;
  42
  43     private CandidateRegistry(final ActorContext<CandidateRegistryCommand> context,
  44                               final ReplicatorMessageAdapter<CandidateRegistryCommand,
  45                                       ORMap<DOMEntity, ORSet<String>>> replicatorAdapter) {
  46         super(context);
  47         this.replicatorAdapter = replicatorAdapter;
  48
  49         this.node = DistributedData.get(context.getSystem()).selfUniqueAddress();
  50
  51         LOG.debug("Candidate registry started");
  52     }
  53
  54     public static Behavior<CandidateRegistryCommand> create() {
  55         return Behaviors.setup(ctx ->
  56                 DistributedData.withReplicatorMessageAdapter(
  57                         (ReplicatorMessageAdapter<CandidateRegistryCommand,
  58                                 ORMap<DOMEntity,ORSet<String>>> replicatorAdapter) ->
  59                                         new CandidateRegistry(ctx, replicatorAdapter)));
  60     }
  61
  62     @Override
  63     public Receive<CandidateRegistryCommand> createReceive() {
  64         return newReceiveBuilder()
  65                 .onMessage(RegisterCandidate.class, this::onRegisterCandidate)
  66                 .onMessage(UnregisterCandidate.class, this::onUnregisterCandidate)
  67                 .onMessage(InternalUpdateResponse.class, this::onInternalUpdateResponse)
  68                 .build();
  69     }
  70
  71     private Behavior<CandidateRegistryCommand> onRegisterCandidate(final RegisterCandidate registerCandidate) {
  72         LOG.debug("Registering candidate({}) for entity: {}",
  73                 registerCandidate.getCandidate(), registerCandidate.getEntity());
  74         replicatorAdapter.askUpdate(
  75                 askReplyTo -> new Replicator.Update<>(
  76                         KEY,
  77                         ORMap.empty(),
  78                         Replicator.writeLocal(),
  79                         askReplyTo,
  80                         map -> map.update(node, registerCandidate.getEntity(), ORSet.empty(),
  81                                 value -> value.add(node, registerCandidate.getCandidate()))),
  82                 InternalUpdateResponse::new);
  83         return this;
  84     }
  85
  86     private Behavior<CandidateRegistryCommand> onUnregisterCandidate(final UnregisterCandidate unregisterCandidate) {
  87         LOG.debug("Removing candidate({}) from entity: {}",
  88                 unregisterCandidate.getCandidate(), unregisterCandidate.getEntity());
  89         replicatorAdapter.askUpdate(
  90                 askReplyTo -> new Replicator.Update<>(
  91                         KEY,
  92                         ORMap.empty(),
  93                         Replicator.writeLocal(),
  94                         askReplyTo,
  95                         map -> map.update(node, unregisterCandidate.getEntity(), ORSet.empty(),
  96                                 value -> value.remove(node, unregisterCandidate.getCandidate()))),
  97                 InternalUpdateResponse::new);
  98         return this;
  99     }
 100
 101     private Behavior<CandidateRegistryCommand> onInternalUpdateResponse(final InternalUpdateResponse updateResponse) {
 102         LOG.debug("Received update response: {}", updateResponse.getRsp());
 103         return this;
 104     }
 105 }