Nodejs Express从控制器到服务的外包逻辑

Question

我有一个从API获取数据的功能。我现在想将程序逻辑外包给服务，以保持控制器的整洁。我得到有关异步/等待的数据，不幸的是，我不知道如何将其外包给服务？有人有主意吗？这是我的homeController.js：const ispwrapper = require('../lib/ispwrapper');require('dotenv').config();const BASE_URL = process.env.API_BASE_URL;const OPTIONS = {    username: process.env.API_USERNAME,    password: process.env.API_PASSWORD};const renderHome = async (req, res) => {    let domain = [],        message = '';    try {        let a = new ispwrapper.ISPConfig(BASE_URL, OPTIONS);        const response = await a.getDataByPrimaryId('sites_web_domain_get', { active: 'y' });        for (let i = 0; i < response.length; i++){            domain.push(response[i].domain);        }    } catch(err) {        message = 'Error when retriving domains from API';    } finally {        res.render('home', {            title: 'ISPConfig',            heading: 'Welcome to my ISPConfig Dashboard',            homeActive: true,            domain,            message        });    }};module.exports = {    renderHome};我的homeService.js：const    ispwrapper = require('../lib/ispwrapper');require('dotenv').config();const BASE_URL = process.env.API_BASE_URL;const OPTIONS = {    username: process.env.API_USERNAME,    password: process.env.API_PASSWORD};const getDomains = async () => {// i have no idea how use my renderHome() logic here};module.exports = {    getDomains};