refactor: app.ts 코드 분리

DB 연결 Loader 파일로 분리
port listen 역할 server.ts로 분리 - 테스트 코드에서 app import 해야하는데 이때 서버가 실행되지 않도록 분리

server/src/Board/Board.Controller.ts

@@ -1,5 +1,5 @@
 import { Request, Response, NextFunction } from "express";
-import { redisCli } from "../app";
+import redisCli from "../Loader/Redis.Loader";
 
 import BoardService from "./Board.Service";
 import { searchKeyList, sortKeyList } from "./Board.Constants";

server/src/Form/Form.Caching.ts

@@ -1,5 +1,5 @@
 import { NextFunction, Request, Response } from "express";
-import { redisCli } from "../app";
+import redisCli from "../Loader/Redis.Loader";
 
 const formCaching = async (req: Request, res: Response, next: NextFunction) => {
   const cachingResult = await redisCli.get(`form:${req.params.formId}`);

server/src/Form/Form.Controller.ts

@@ -3,7 +3,7 @@ import InteranServerException from "../Common/Exceptions/InternalServer.Exceptio
 import BadRequestException from "../Common/Exceptions/BadRequest.Exception";
 import FormService from "./Form.Service";
 import { FormInDB } from "./Form.Interface";
-import { redisCli } from "../app";
+import redisCli from "../Loader/Redis.Loader";
 
 class FormController {
   static async createNewForm(req: Request, res: Response, next: NextFunction) {

server/src/Loader/Mongo.Loader.ts

@@ -0,0 +1,17 @@
+import * as dotenv from "dotenv";
+import mongoose from "mongoose";
+
+dotenv.config();
+
+export default function connectMongoDB() {
+  mongoose.connect(
+    `mongodb+srv://${process.env.MONGODB_ID}:${process.env.MONGODB_PASSWORD}@cluster0.a7vmgdw.mongodb.net/database0?`,
+    (err) => {
+      if (err) {
+        console.log(err);
+      } else {
+        console.log("mongoDB is connected...");
+      }
+    }
+  );
+}

server/src/Loader/MySQL.Loader.ts

@@ -0,0 +1,16 @@
+import * as dotenv from "dotenv";
+import "reflect-metadata";
+import { DataSource } from "typeorm";
+
+dotenv.config();
+const myDataSource = new DataSource({
+  type: "mysql",
+  host: process.env.TYPEORM_HOST || "",
+  port: Number(process.env.TYPEORM_PORT),
+  username: process.env.TYPEORM_USERNAME || "",
+  password: process.env.TYPEORM_PASSWORD || "",
+  database: process.env.TYPEORM_DATABASE || "",
+  entities: [`${__dirname}/../**/*.Model{.ts,.js}`],
+});
+
+export default myDataSource;

server/src/Loader/Redis.Loader.ts

@@ -0,0 +1,18 @@
+import * as redis from "redis";
+
+const redisClient = redis.createClient({
+  url: `redis://@${process.env.REDIS_HOST}:${process.env.REDIS_PORT}/0`,
+  legacyMode: true,
+});
+
+redisClient.on("connect", () => {
+  console.info("Redis connected!");
+});
+redisClient.on("error", (err) => {
+  console.error("Redis Client Error", err);
+});
+
+redisClient.connect();
+const redisCli = redisClient.v4;
+
+export default redisCli;

server/src/Response/Response.Service.ts

@@ -1,5 +1,5 @@
 import FormResponse from "./Response.Model";
-import { redisCli } from "../app";
+import redisCli from "../Loader/Redis.Loader";
 import { AnswerInterface, AnswerFromRequest } from "./Response.Interface";
 
 class ResponseService {

server/src/app.ts

@@ -5,11 +5,8 @@ import path from "path";
 import cookieParser from "cookie-parser";
 import logger from "morgan";
 import * as dotenv from "dotenv";
-import mongoose from "mongoose";
 import cors from "cors";
 import "reflect-metadata";
-import { DataSource } from "typeorm";
-import * as redis from "redis";
 
 import indexRouter from "./routes/index";
 import errorMiddleware from "./Middlewares/Error.Middleware";
@@ -24,54 +21,6 @@ app.use(
     credentials: true,
   })
 );
-
-const myDataSource = new DataSource({
-  type: "mysql",
-  host: process.env.TYPEORM_HOST || "",
-  port: Number(process.env.TYPEORM_PORT),
-  username: process.env.TYPEORM_USERNAME || "",
-  password: process.env.TYPEORM_PASSWORD || "",
-  database: process.env.TYPEORM_DATABASE || "",
-  entities: [`${__dirname}/**/*.Model{.ts,.js}`],
-});
-
-myDataSource.initialize().then(() => {
-  console.log("Data Source has been initialized!");
-});
-
-// MongoDB 연결
-function connectDB() {
-  mongoose.connect(
-    `mongodb+srv://${process.env.MONGODB_ID}:${process.env.MONGODB_PASSWORD}@cluster0.a7vmgdw.mongodb.net/database0?`,
-    (err) => {
-      if (err) {
-        console.log(err);
-      } else {
-        console.log("mongoDB is connected...");
-      }
-    }
-  );
-}
-
-connectDB();
-
-// redis 연결
-const redisClient = redis.createClient({
-  url: `redis://@${process.env.REDIS_HOST}:${process.env.REDIS_PORT}/0`,
-  legacyMode: true,
-});
-
-redisClient.on("connect", () => {
-  console.info("Redis connected!");
-});
-redisClient.on("error", (err) => {
-  console.error("Redis Client Error", err);
-});
-
-redisClient.connect();
-
-export const redisCli = redisClient.v4;
-
 // view engine setup
 app.use(logger("dev"));
 app.use(express.json());
@@ -88,6 +37,4 @@ app.use((req: Request, res: Response, next: NextFunction) => {
 // error handler
 app.use(errorMiddleware);
 
-app.listen(process.env.PORT);
-
 export default app;

server/src/server.ts

@@ -0,0 +1,11 @@
+import app from "./app";
+import myDataSource from "./Loader/MySQL.Loader";
+import connectMongoDB from "./Loader/Mongo.Loader";
+
+myDataSource.initialize().then(() => {
+  console.log("Data Source has been initialized!");
+});
+
+connectMongoDB();
+
+app.listen(process.env.PORT);