Introduce DOMEntityOwnershipService replacement

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

diff --git a/opendaylight/md-sal/eos-dom-akka/src/main/java/org/opendaylight/controller/eos/akka/registry/candidate/CandidateRegistry.java b/opendaylight/md-sal/eos-dom-akka/src/main/java/org/opendaylight/controller/eos/akka/registry/candidate/CandidateRegistry.java
new file mode 100644 (file)
index 0000000..16c2ab6
--- /dev/null
+++ b/opendaylight/md-sal/eos-dom-akka/src/main/java/org/opendaylight/controller/eos/akka/registry/candidate/CandidateRegistry.java
@@ -0,0 +1,105 @@
+/*
+ * Copyright (c) 2021 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.registry.candidate;
+
+import akka.actor.typed.Behavior;
+import akka.actor.typed.javadsl.AbstractBehavior;
+import akka.actor.typed.javadsl.ActorContext;
+import akka.actor.typed.javadsl.Behaviors;
+import akka.actor.typed.javadsl.Receive;
+import akka.cluster.ddata.Key;
+import akka.cluster.ddata.ORMap;
+import akka.cluster.ddata.ORMapKey;
+import akka.cluster.ddata.ORSet;
+import akka.cluster.ddata.SelfUniqueAddress;
+import akka.cluster.ddata.typed.javadsl.DistributedData;
+import akka.cluster.ddata.typed.javadsl.Replicator;
+import akka.cluster.ddata.typed.javadsl.ReplicatorMessageAdapter;
+import org.opendaylight.controller.eos.akka.registry.candidate.command.CandidateRegistryCommand;
+import org.opendaylight.controller.eos.akka.registry.candidate.command.InternalUpdateResponse;
+import org.opendaylight.controller.eos.akka.registry.candidate.command.RegisterCandidate;
+import org.opendaylight.controller.eos.akka.registry.candidate.command.UnregisterCandidate;
+import org.opendaylight.mdsal.eos.dom.api.DOMEntity;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Actor responsible for handling registrations of candidates into distributed-data.
+ */
+public final class CandidateRegistry extends AbstractBehavior<CandidateRegistryCommand> {
+
+    private static final Logger LOG = LoggerFactory.getLogger(CandidateRegistry.class);
+
+    public static final Key<ORMap<DOMEntity, ORSet<String>>> KEY = new ORMapKey<>("candidateRegistry");
+
+    private final ReplicatorMessageAdapter<CandidateRegistryCommand, ORMap<DOMEntity, ORSet<String>>> replicatorAdapter;
+    private final SelfUniqueAddress node;
+
+    private CandidateRegistry(final ActorContext<CandidateRegistryCommand> context,
+                              final ReplicatorMessageAdapter<CandidateRegistryCommand,
+                                      ORMap<DOMEntity, ORSet<String>>> replicatorAdapter) {
+        super(context);
+        this.replicatorAdapter = replicatorAdapter;
+
+        this.node = DistributedData.get(context.getSystem()).selfUniqueAddress();
+
+        LOG.debug("Candidate registry started");
+    }
+
+    public static Behavior<CandidateRegistryCommand> create() {
+        return Behaviors.setup(ctx ->
+                DistributedData.withReplicatorMessageAdapter(
+                        (ReplicatorMessageAdapter<CandidateRegistryCommand,
+                                ORMap<DOMEntity,ORSet<String>>> replicatorAdapter) ->
+                                        new CandidateRegistry(ctx, replicatorAdapter)));
+    }
+
+    @Override
+    public Receive<CandidateRegistryCommand> createReceive() {
+        return newReceiveBuilder()
+                .onMessage(RegisterCandidate.class, this::onRegisterCandidate)
+                .onMessage(UnregisterCandidate.class, this::onUnregisterCandidate)
+                .onMessage(InternalUpdateResponse.class, this::onInternalUpdateResponse)
+                .build();
+    }
+
+    private Behavior<CandidateRegistryCommand> onRegisterCandidate(final RegisterCandidate registerCandidate) {
+        LOG.debug("Registering candidate({}) for entity: {}",
+                registerCandidate.getCandidate(), registerCandidate.getEntity());
+        replicatorAdapter.askUpdate(
+                askReplyTo -> new Replicator.Update<>(
+                        KEY,
+                        ORMap.empty(),
+                        Replicator.writeLocal(),
+                        askReplyTo,
+                        map -> map.update(node, registerCandidate.getEntity(), ORSet.empty(),
+                                value -> value.add(node, registerCandidate.getCandidate()))),
+                InternalUpdateResponse::new);
+        return this;
+    }
+
+    private Behavior<CandidateRegistryCommand> onUnregisterCandidate(final UnregisterCandidate unregisterCandidate) {
+        LOG.debug("Removing candidate({}) from entity: {}",
+                unregisterCandidate.getCandidate(), unregisterCandidate.getEntity());
+        replicatorAdapter.askUpdate(
+                askReplyTo -> new Replicator.Update<>(
+                        KEY,
+                        ORMap.empty(),
+                        Replicator.writeLocal(),
+                        askReplyTo,
+                        map -> map.update(node, unregisterCandidate.getEntity(), ORSet.empty(),
+                                value -> value.remove(node, unregisterCandidate.getCandidate()))),
+                InternalUpdateResponse::new);
+        return this;
+    }
+
+    private Behavior<CandidateRegistryCommand> onInternalUpdateResponse(final InternalUpdateResponse updateResponse) {
+        LOG.debug("Received update response: {}", updateResponse.getRsp());
+        return this;
+    }
+}