From 4e66d2b8dfbf362493905451cd8f6ca5655dddaa Mon Sep 17 00:00:00 2001
From: Anton Tananaev <anton@traccar.org>
Date: Mon, 24 Jun 2024 07:56:43 -0700
Subject: Handle zero stored messages

---
 src/main/java/org/traccar/schedule/TaskHealthCheck.java | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

(limited to 'src/main/java')

diff --git a/src/main/java/org/traccar/schedule/TaskHealthCheck.java b/src/main/java/org/traccar/schedule/TaskHealthCheck.java
index b3387eca7..56ac4b91d 100644
--- a/src/main/java/org/traccar/schedule/TaskHealthCheck.java
+++ b/src/main/java/org/traccar/schedule/TaskHealthCheck.java
@@ -97,17 +97,17 @@ public class TaskHealthCheck implements ScheduleTask {
                 LOGGER.warn("Web health check failed with status {}", status);
             }
 
-            if (dropThreshold > 0) {
-                int messageCurrentTotal = statisticsManager.messageStoredCount();
-                int messageCurrentPeriod = messageCurrentTotal - messageLastTotal;
+            int messageCurrentTotal = statisticsManager.messageStoredCount();
+            int messageCurrentPeriod = messageCurrentTotal - messageLastTotal;
+            if (dropThreshold > 0 && messageLastPeriod > 0) {
                 double drop = messageCurrentPeriod / (double) messageLastPeriod;
                 if (drop < dropThreshold) {
                     success = false;
                     LOGGER.warn("Message health check failed with drop {}", drop);
                 }
-                messageLastTotal = messageCurrentTotal;
-                messageLastPeriod = messageCurrentPeriod;
             }
+            messageLastTotal = messageCurrentTotal;
+            messageLastPeriod = messageCurrentPeriod;
 
             if (success) {
                 notifyWatchdog();
-- 
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