1 files changed, 21 insertions, 26 deletions

diff --git a/src/main/java/org/traccar/api/HealthCheckService.java b/src/main/java/org/traccar/api/HealthCheckService.java
index 0182cc358..8a17c8798 100644
--- a/src/main/java/org/traccar/api/HealthCheckService.java
+++ b/src/main/java/org/traccar/api/HealthCheckService.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2020 Anton Tananaev (anton@traccar.org)
+ * Copyright 2020 - 2022 Anton Tananaev (anton@traccar.org)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -22,9 +22,10 @@ import org.slf4j.LoggerFactory;
 import org.traccar.Context;
 import org.traccar.config.Keys;
 
-import java.util.TimerTask;
+import java.util.concurrent.ScheduledExecutorService;
+import java.util.concurrent.TimeUnit;
 
-public class HealthCheckService {
+public class HealthCheckService implements Runnable {
 
     private static final Logger LOGGER = LoggerFactory.getLogger(HealthCheckService.class);
 
@@ -52,36 +53,30 @@ public class HealthCheckService {
         }
     }
 
-    public boolean isEnabled() {
-        return enabled;
-    }
-
-    public long getPeriod() {
-        return period;
-    }
-
     private String getUrl() {
         String address = Context.getConfig().getString(Keys.WEB_ADDRESS, "localhost");
         int port = Context.getConfig().getInteger(Keys.WEB_PORT);
         return "http://" + address + ":" + port + "/api/server";
     }
 
-    public TimerTask createTask() {
-        return new TimerTask() {
-            @Override
-            public void run() {
-                LOGGER.debug("Health check running");
-                int status = Context.getClient().target(getUrl()).request().get().getStatus();
-                if (status == 200) {
-                    int result = systemD.sd_notify(0, "WATCHDOG=1");
-                    if (result < 0) {
-                        LOGGER.warn("Health check notify error {}", result);
-                    }
-                } else {
-                    LOGGER.warn("Health check failed with status {}", status);
-                }
+    public void schedule(ScheduledExecutorService executor) {
+        if (enabled) {
+            executor.scheduleAtFixedRate(this, period, period, TimeUnit.MILLISECONDS);
+        }
+    }
+
+    @Override
+    public void run() {
+        LOGGER.debug("Health check running");
+        int status = Context.getClient().target(getUrl()).request().get().getStatus();
+        if (status == 200) {
+            int result = systemD.sd_notify(0, "WATCHDOG=1");
+            if (result < 0) {
+                LOGGER.warn("Health check notify error {}", result);
             }
-        };
+        } else {
+            LOGGER.warn("Health check failed with status {}", status);
+        }
     }
 
     interface SystemD extends Library {