Fix FindBugs warnings in sal-akk-raft

[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 3c8c845f5dbb9aa7cf71c9add1d5ec16753285df..ba1c157d37241f2274c9c7a9ed307f281a282a82 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
@@ -11,10 +11,17 @@ package org.opendaylight.controller.cluster.raft.base.messages;
 import java.io.Serializable;
 
 /**
- * This messages is sent to the Leader to prompt it to send a heartbeat
- * to it's followers.
- *
- * Typically the Leader to itself on a schedule
+ * This messages is sent via a schedule to the Leader to prompt it to send a heart beat to its followers.
  */
-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
+    }
+
+    private Object readResolve() {
+        return INSTANCE;
+    }
 }