opendaylight/md-sal/eos-dom-akka/src/main/java/org/opendaylight/controller/eos/akka/bootstrap/EOSMain.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.bootstrap;
   9
  10 import akka.actor.typed.ActorRef;
  11 import akka.actor.typed.Behavior;
  12 import akka.actor.typed.javadsl.AbstractBehavior;
  13 import akka.actor.typed.javadsl.ActorContext;
  14 import akka.actor.typed.javadsl.Behaviors;
  15 import akka.actor.typed.javadsl.Receive;
  16 import akka.cluster.typed.Cluster;
  17 import akka.cluster.typed.ClusterSingleton;
  18 import akka.cluster.typed.SingletonActor;
  19 import org.opendaylight.controller.eos.akka.bootstrap.command.BootstrapCommand;
  20 import org.opendaylight.controller.eos.akka.bootstrap.command.GetRunningContext;
  21 import org.opendaylight.controller.eos.akka.bootstrap.command.RunningContext;
  22 import org.opendaylight.controller.eos.akka.bootstrap.command.Terminate;
  23 import org.opendaylight.controller.eos.akka.owner.checker.OwnerStateChecker;
  24 import org.opendaylight.controller.eos.akka.owner.checker.command.StateCheckerCommand;
  25 import org.opendaylight.controller.eos.akka.owner.supervisor.OwnerSyncer;
  26 import org.opendaylight.controller.eos.akka.owner.supervisor.command.OwnerSupervisorCommand;
  27 import org.opendaylight.controller.eos.akka.registry.candidate.CandidateRegistry;
  28 import org.opendaylight.controller.eos.akka.registry.candidate.command.CandidateRegistryCommand;
  29 import org.opendaylight.controller.eos.akka.registry.listener.type.EntityTypeListenerRegistry;
  30 import org.opendaylight.controller.eos.akka.registry.listener.type.command.TypeListenerRegistryCommand;
  31 import org.opendaylight.yangtools.yang.common.Empty;
  32
  33 public final class EOSMain extends AbstractBehavior<BootstrapCommand> {
  34     private final ActorRef<TypeListenerRegistryCommand> listenerRegistry;
  35     private final ActorRef<CandidateRegistryCommand> candidateRegistry;
  36     private final ActorRef<OwnerSupervisorCommand> ownerSupervisor;
  37     private final ActorRef<StateCheckerCommand> ownerStateChecker;
  38
  39     private EOSMain(final ActorContext<BootstrapCommand> context) {
  40         super(context);
  41
  42         final String role = Cluster.get(context.getSystem()).selfMember().getRoles().iterator().next();
  43
  44         listenerRegistry = context.spawn(EntityTypeListenerRegistry.create(role), "ListenerRegistry");
  45         candidateRegistry = context.spawn(CandidateRegistry.create(), "CandidateRegistry");
  46         ownerStateChecker = context.spawn(OwnerStateChecker.create(role), "OwnerStateChecker");
  47
  48         final ClusterSingleton clusterSingleton = ClusterSingleton.get(context.getSystem());
  49         // start the initial sync behavior that switches to the regular one after syncing
  50         ownerSupervisor = clusterSingleton.init(SingletonActor.of(OwnerSyncer.create(), "OwnerSupervisor"));
  51     }
  52
  53     public static Behavior<BootstrapCommand> create() {
  54         return Behaviors.setup(EOSMain::new);
  55     }
  56
  57     @Override
  58     public Receive<BootstrapCommand> createReceive() {
  59         return newReceiveBuilder()
  60                 .onMessage(GetRunningContext.class, this::onGetRunningContext)
  61                 .onMessage(Terminate.class, this::onTerminate)
  62                 .build();
  63     }
  64
  65     private Behavior<BootstrapCommand> onGetRunningContext(final GetRunningContext request) {
  66         request.getReplyTo().tell(
  67                 new RunningContext(listenerRegistry, candidateRegistry, ownerStateChecker, ownerSupervisor));
  68         return this;
  69     }
  70
  71     private Behavior<BootstrapCommand> onTerminate(final Terminate request) {
  72         request.getReplyTo().tell(Empty.getInstance());
  73         return Behaviors.stopped();
  74     }
  75 }