* 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> {
private final Shard shard;
* 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);
}