Check config on load (#4170)

Co-authored-by: syuilo <syuilotan@yahoo.co.jp>

src/db/elasticsearch.ts

@@ -42,9 +42,10 @@ const index = {
 };
 
 // Init ElasticSearch connection
-const client = config.elasticsearch ? new elasticsearch.Client({
-	host: `${config.elasticsearch.host}:${config.elasticsearch.port}`
-}) : null;
+
+const client = config.elasticsearch.map(({ host, port }) => {
+	return new elasticsearch.Client({ host: `${host}:${port}` });
+}).getOrElse(null);
 
 if (client) {
 	// Send a HEAD request

src/db/mongodb.ts

@@ -1,7 +1,7 @@
 import config from '../config';
 
-const u = config.mongodb.user ? encodeURIComponent(config.mongodb.user) : null;
-const p = config.mongodb.pass ? encodeURIComponent(config.mongodb.pass) : null;
+const u = config.mongodb.user.map(x => encodeURIComponent(x)).getOrElse(null);
+const p = config.mongodb.pass.map(x => encodeURIComponent(x)).getOrElse(null);
 
 const uri = `mongodb://${u && p ? `${u}:${p}@` : ''}${config.mongodb.host}:${config.mongodb.port}/${config.mongodb.db}`;
 

src/db/redis.ts

@@ -1,10 +1,8 @@
 import * as redis from 'redis';
 import config from '../config';
 
-export default config.redis ? redis.createClient(
-	config.redis.port,
-	config.redis.host,
-	{
-		auth_pass: config.redis.pass
-	}
-) : null;
+export default config.redis.map(({ host, port, pass }) => {
+	return redis.createClient(port, host, {
+		auth_pass: pass.getOrElse(null)
+	});
+}).getOrElse(null);