Fix clearing of candidates from previous iterations

[controller.git] / opendaylight / md-sal / eos-dom-akka / src / main / java / org / opendaylight / controller / eos / akka / owner / supervisor / AbstractSupervisor.java

diff --git a/opendaylight/md-sal/eos-dom-akka/src/main/java/org/opendaylight/controller/eos/akka/owner/supervisor/AbstractSupervisor.java b/opendaylight/md-sal/eos-dom-akka/src/main/java/org/opendaylight/controller/eos/akka/owner/supervisor/AbstractSupervisor.java
new file mode 100644 (file)
index 0000000..27907fd
--- /dev/null
+++ b/opendaylight/md-sal/eos-dom-akka/src/main/java/org/opendaylight/controller/eos/akka/owner/supervisor/AbstractSupervisor.java
@@ -0,0 +1,66 @@
+/*
+ * Copyright (c) 2022 PANTHEON.tech, s.r.o. and others.  All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
+package org.opendaylight.controller.eos.akka.owner.supervisor;
+
+import akka.actor.typed.ActorRef;
+import akka.actor.typed.Behavior;
+import akka.actor.typed.javadsl.AbstractBehavior;
+import akka.actor.typed.javadsl.ActorContext;
+import akka.cluster.ddata.ORMap;
+import akka.cluster.ddata.ORSet;
+import akka.cluster.ddata.typed.javadsl.DistributedData;
+import akka.cluster.ddata.typed.javadsl.Replicator;
+import akka.cluster.ddata.typed.javadsl.ReplicatorMessageAdapter;
+import java.time.Duration;
+import org.opendaylight.controller.eos.akka.owner.supervisor.command.ClearCandidates;
+import org.opendaylight.controller.eos.akka.owner.supervisor.command.ClearCandidatesForMember;
+import org.opendaylight.controller.eos.akka.owner.supervisor.command.ClearCandidatesResponse;
+import org.opendaylight.controller.eos.akka.owner.supervisor.command.OwnerSupervisorCommand;
+import org.opendaylight.controller.eos.akka.registry.candidate.CandidateRegistry;
+import org.opendaylight.mdsal.eos.dom.api.DOMEntity;
+import org.slf4j.Logger;
+
+abstract class AbstractSupervisor extends AbstractBehavior<OwnerSupervisorCommand> {
+
+    final ReplicatorMessageAdapter<OwnerSupervisorCommand, ORMap<DOMEntity, ORSet<String>>> candidateReplicator;
+
+    AbstractSupervisor(final ActorContext<OwnerSupervisorCommand> context) {
+        super(context);
+
+        final ActorRef<Replicator.Command> replicator = DistributedData.get(getContext().getSystem()).replicator();
+        candidateReplicator = new ReplicatorMessageAdapter<>(getContext(), replicator, Duration.ofSeconds(5));
+    }
+
+    Behavior<OwnerSupervisorCommand> onClearCandidatesForMember(final ClearCandidatesForMember command) {
+        getLogger().debug("Clearing candidates for member: {}", command.getCandidate());
+
+        candidateReplicator.askGet(
+                askReplyTo -> new Replicator.Get<>(CandidateRegistry.KEY,
+                        new Replicator.ReadMajority(Duration.ofSeconds(15)), askReplyTo),
+                response -> new ClearCandidates(response, command));
+
+        return this;
+    }
+
+    Behavior<OwnerSupervisorCommand> finishClearCandidates(final ClearCandidates command) {
+        if (command.getResponse() instanceof Replicator.GetSuccess) {
+            getLogger().debug("Retrieved candidate data, clearing candidates for {}",
+                    command.getOriginalMessage().getCandidate());
+
+            getContext().spawnAnonymous(CandidateCleaner.create()).tell(command);
+        } else {
+            getLogger().debug("Unable to retrieve candidate data for {}, no candidates present sending empty reply",
+                    command.getOriginalMessage().getCandidate());
+            command.getOriginalMessage().getReplyTo().tell(new ClearCandidatesResponse());
+        }
+
+        return this;
+    }
+
+    abstract Logger getLogger();
+}