2 * Copyright (c) 2021 PANTHEON.tech, s.r.o. and others. All rights reserved.
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
8 package org.opendaylight.controller.eos.akka.owner.supervisor;
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.Member;
16 import akka.cluster.typed.Cluster;
17 import org.opendaylight.controller.eos.akka.owner.supervisor.command.ActivateDataCenter;
18 import org.opendaylight.controller.eos.akka.owner.supervisor.command.OwnerSupervisorCommand;
19 import org.slf4j.Logger;
20 import org.slf4j.LoggerFactory;
23 * Initial Supervisor behavior that stays idle and only switches itself to the active behavior when its running
24 * in the primary datacenter, or is activated on demand. Once the supervisor instance is no longer needed in the
25 * secondary datacenter it needs to be deactivated manually.
27 public final class IdleSupervisor extends AbstractBehavior<OwnerSupervisorCommand> {
28 private static final Logger LOG = LoggerFactory.getLogger(IdleSupervisor.class);
30 private static final String DATACENTER_PREFIX = "dc-";
31 private static final String DEFAULT_DATACENTER = "dc-default";
33 private IdleSupervisor(final ActorContext<OwnerSupervisorCommand> context) {
35 final Cluster cluster = Cluster.get(context.getSystem());
37 final String datacenterRole = extractDatacenterRole(cluster.selfMember());
38 if (datacenterRole.equals(DEFAULT_DATACENTER)) {
39 LOG.debug("No datacenter configured, activating default data center");
40 context.getSelf().tell(ActivateDataCenter.INSTANCE);
43 LOG.debug("Idle supervisor started on {}.", cluster.selfMember());
46 public static Behavior<OwnerSupervisorCommand> create() {
48 return Behaviors.setup(IdleSupervisor::new);
52 public Receive<OwnerSupervisorCommand> createReceive() {
53 return newReceiveBuilder()
54 .onMessage(ActivateDataCenter.class, this::onActivateDataCenter)
58 private Behavior<OwnerSupervisorCommand> onActivateDataCenter(final ActivateDataCenter message) {
59 LOG.debug("Received ActivateDataCenter command switching to syncer behavior,");
60 return OwnerSyncer.create();
63 private String extractDatacenterRole(final Member selfMember) {
64 return selfMember.getRoles().stream()
65 .filter(role -> role.startsWith(DATACENTER_PREFIX))
67 .orElseThrow(() -> new IllegalArgumentException(selfMember + " does not have a valid role"));