Add validateDBConnection function

api/src/app.ts

@@ -3,10 +3,11 @@ import bodyParser from 'body-parser';
 import logger from 'express-pino-logger';
 import path from 'path';
 import cors from 'cors';
-
 import env, { validateEnv } from './env';
+import { validateDBConnection } from './database';
 
 validateEnv();
+validateDBConnection();
 
 import errorHandler from './middleware/error-handler';
 

api/src/database/index.ts

@@ -2,6 +2,7 @@ import knex, { Config } from 'knex';
 import dotenv from 'dotenv';
 import camelCase from 'camelcase';
 import path from 'path';
+import logger from '../logger';
 import env from '../env';
 
 import SchemaInspector from 'knex-schema-inspector';
@@ -31,6 +32,15 @@ if (env.DB_CLIENT === 'sqlite3') {
 
 const database = knex(knexConfig);
 
-export const schemaInspector = SchemaInspector(database);
+export async function validateDBConnection() {
+	try {
+		await database.raw('select 1+1 as result');
+	} catch (error) {
+		logger.fatal(`Can't connect to the database.`);
+		logger.fatal(error);
+		process.exit(1);
+	}
+}
 
+export const schemaInspector = SchemaInspector(database);
 export default database;