From 08e27d1c211b269d738670579e48dc735ae6d3f2 Mon Sep 17 00:00:00 2001
From: Vitaly Takmazov
Date: Fri, 12 Apr 2024 17:01:30 +0300
Subject: systemd watchdog service

---
 .../com/juick/service/SystemdWatchdogService.java  | 54 ++++++++++++++++++++++
 .../java/com/juick/service/WatchdogService.java    | 31 +++++++++++++
 2 files changed, 85 insertions(+)
 create mode 100644 src/main/java/com/juick/service/SystemdWatchdogService.java
 create mode 100644 src/main/java/com/juick/service/WatchdogService.java

(limited to 'src/main/java/com/juick/service')

diff --git a/src/main/java/com/juick/service/SystemdWatchdogService.java b/src/main/java/com/juick/service/SystemdWatchdogService.java
new file mode 100644
index 00000000..6fb95e9e
--- /dev/null
+++ b/src/main/java/com/juick/service/SystemdWatchdogService.java
@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2008-2024, Juick
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.juick.service;
+
+import info.faljse.SDNotify.SDNotify;
+import jakarta.annotation.Nonnull;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.boot.context.event.ApplicationReadyEvent;
+import org.springframework.scheduling.annotation.Scheduled;
+
+
+public class SystemdWatchdogService implements WatchdogService {
+    private static final Logger logger = LoggerFactory.getLogger("juick");
+    @Override
+    public void onApplicationReady(@Nonnull ApplicationReadyEvent event) {
+        if (SDNotify.isAvailable()) {
+            logger.debug("Systemd is configured");
+            SDNotify.sendNotify();
+        } else {
+            logger.debug("Systemd is not configured");
+        }
+        if (SDNotify.isWatchdogEnabled()) {
+            logger.debug("Watchdog timeout is {}", SDNotify.getWatchdogFrequency());
+            SDNotify.sendWatchdog();
+        } else {
+            logger.debug("Systemd watchdog is not configured");
+        }
+
+    }
+    @Override
+    @Scheduled(fixedRate = 15000)
+    public void onWatchdogTimeout() {
+        if (SDNotify.isWatchdogEnabled()) {
+            logger.debug("Sending Systemd watchdog");
+            SDNotify.sendWatchdog();
+        }
+    }
+}
diff --git a/src/main/java/com/juick/service/WatchdogService.java b/src/main/java/com/juick/service/WatchdogService.java
new file mode 100644
index 00000000..7d22bf58
--- /dev/null
+++ b/src/main/java/com/juick/service/WatchdogService.java
@@ -0,0 +1,31 @@
+/*
+ * Copyright (C) 2008-2024, Juick
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.juick.service;
+
+import org.springframework.boot.context.event.ApplicationReadyEvent;
+import org.springframework.context.event.EventListener;
+import org.springframework.scheduling.annotation.Async;
+
+public interface WatchdogService {
+
+    @Async
+    @EventListener
+    void onApplicationReady(ApplicationReadyEvent event);
+
+    void onWatchdogTimeout();
+}
-- 
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