*/
package org.opendaylight.controller.cluster.datastore;
+import akka.actor.ActorPath;
+import akka.actor.ActorRef;
+import akka.actor.ActorSelection;
+import akka.actor.Props;
+import com.google.common.base.Preconditions;
+
/**
* Base class for factories instantiating delegates which are local to the
* shard leader.
*
- * <D> delegate type
- * <M> message type
+ * @param <D> delegate type
+ * @param <M> message type
*/
-abstract class LeaderLocalDelegateFactory<M, D> extends DelegateFactory<M, D> {
+abstract class LeaderLocalDelegateFactory<M> {
+ private final Shard shard;
+
+ protected LeaderLocalDelegateFactory(final Shard shard) {
+ this.shard = Preconditions.checkNotNull(shard);
+ }
+
+ protected final ActorRef getSelf() {
+ return shard.getSelf();
+ }
+
+ protected final Shard getShard() {
+ return shard;
+ }
+
+ protected final String persistenceId() {
+ return shard.persistenceId();
+ }
+
+ protected final void tellSender(final Object message) {
+ shard.getSender().tell(message, getSelf());
+ }
+
+ protected final ActorRef createActor(final Props props) {
+ return shard.getContext().actorOf(props);
+ }
+
+ protected final ActorSelection selectActor(ActorRef ref) {
+ return shard.getContext().system().actorSelection(ref.path());
+ }
+
+ protected final ActorSelection selectActor(ActorPath path) {
+ return shard.getContext().system().actorSelection(path);
+ }
+
/**
* Invoked whenever the local shard's leadership role changes.
*
* @param isLeader true if the shard has become leader, false if it has
- * become a follower.
+ * become a follower.
+ * @param hasLeader true if the shard knows about leader ID
*/
- abstract void onLeadershipChange(boolean isLeader);
- abstract void onMessage(M message, boolean isLeader);
+ abstract void onLeadershipChange(boolean isLeader, boolean hasLeader);
+
+ abstract void onMessage(M message, boolean isLeader, boolean hasLeader);
}