Turn SendHeartBeat into a singleton

[controller.git] / opendaylight / md-sal / sal-akka-raft / src / main / java / org / opendaylight / controller / cluster / raft / base / messages / SendHeartBeat.java

diff --git a/opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/base/messages/SendHeartBeat.java b/opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/base/messages/SendHeartBeat.java
index 7eb7522b85029c7c3000d77498020d67a0171079..289b3bb7859a274f7774de79a8ba5659068290d2 100644 (file)
--- a/opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/base/messages/SendHeartBeat.java
+++ b/opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/base/messages/SendHeartBeat.java
@@ -16,6 +16,16 @@ import java.io.Serializable;
  *
  * Typically the Leader to itself on a schedule
  */
-public class SendHeartBeat implements Serializable {
+public final class SendHeartBeat implements Serializable {
     private static final long serialVersionUID = 1L;
+    public static final SendHeartBeat INSTANCE = new SendHeartBeat();
+
+    private SendHeartBeat() {
+        // Hidden on purpose
+    }
+
+    @SuppressWarnings({ "static-method", "unused" })
+    private SendHeartBeat readResolve() {
+        return INSTANCE;
+    }
 }