feat: implement comprehensive health check endpoints for API, Auth, and Realtime services to monitor database, Redis, MinIO, and InfluxDB connectivity.

realtime/src/helper/authdb.js

@@ -12,8 +12,10 @@ const pool = new Pool({
 async function checkDB() {
     try {
         await pool.query('SELECT NOW()');
+        return true;
     } catch (error) {
         console.error('Database connection failed:', error);
+        return false;
     }
 }
 

realtime/src/helper/redis.js

@@ -65,6 +65,15 @@ async function getWatcherCount(sensorId) {
     return parseInt(count) || 0;
 }
 
+async function checkRedis() {
+    try {
+        await redis.ping();
+        return true;
+    } catch (error) {
+        return false;
+    }
+}
+
 module.exports = {
     setSession,
     getSession,
@@ -74,6 +83,7 @@ module.exports = {
     addWatcher,
     removeWatcher,
     getWatcherCount,
+    checkRedis,
     redis,
     redisSub
 };

realtime/src/index.js

@@ -22,9 +22,14 @@ app.get('/', (req, res) => {
     res.redirect('/health');
 });
 
-app.get('/health', (req, res) => {
+app.get('/health', async (req, res) => {
+    const dbConnected = await require('./helper/authdb').checkDB();
+    const redisConnected = await redisHelper.checkRedis();
+
     res.status(200).send({
-        status: 'OK',
+        status: dbConnected && redisConnected ? 'OK' : 'DEGRADED',
+        database: dbConnected ? 'connected' : 'disconnected',
+        redis: redisConnected ? 'connected' : 'disconnected',
         service: 'realtime',
         version: process.env.VERSION,
         build: process.env.VERSION_BUILD,