observer added, database added to improve fault tolerance, config fixed, ping added, port allocation improved, session observer added, multiple checks added, run process improved, process running check added, fault tolerance improved

src/routes/index.js

@@ -0,0 +1,8 @@
+const router = require('express').Router()
+const router_session = require('./session')
+const router_ping = require('./ping')
+
+router.use('/session', router_session)
+router.use('/ping', router_ping)
+
+module.exports = router

src/routes/ping.js

@@ -0,0 +1,7 @@
+const router = require('express').Router()
+
+const {ping} = require('../controller/ping')
+
+router.get('/', ping)
+
+module.exports = router

src/routes/session.js

@@ -0,0 +1,13 @@
+const router = require('express').Router()
+const { celebrate, Joi, Segments} = require('celebrate')
+
+const {run_session} = require('../controller/session')
+
+router.post('/run', celebrate({
+    [Segments.BODY]: Joi.object().keys({
+        title: Joi.string().required(),
+        session_id: Joi.string().required()
+    })
+}), run_session)
+
+module.exports = router