* 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.cluster.raft.client.messages;
-public class FindLeaderReply {
+import com.google.common.annotations.VisibleForTesting;
+import java.io.Serializable;
+import java.util.Optional;
+import org.eclipse.jdt.annotation.Nullable;
+
+/**
+ * Reply to {@link FindLeader} message, containing the address of the leader actor, as known to the raft actor which
+ * sent the message. If the responding actor does not have knowledge of the leader, {@link #getLeaderActor()} will
+ * return {@link Optional#empty()}.
+ *
+ * <p>
+ * This message is intended for testing purposes only.
+ */
+@VisibleForTesting
+public final class FindLeaderReply implements Serializable {
+ private static final long serialVersionUID = 1L;
private final String leaderActor;
- public FindLeaderReply(String leaderActor) {
+ public FindLeaderReply(final @Nullable String leaderActor) {
this.leaderActor = leaderActor;
}
- public String getLeaderActor() {
- return leaderActor;
+ public Optional<String> getLeaderActor() {
+ return Optional.ofNullable(leaderActor);
}
}