我有一個從API獲取數據的功能。我現在想將程序邏輯外包給服務，以保持控制器的整潔。我得到有關異步/等待的數據，不幸的是，我不知道如何將其外包給服務？有人有主意嗎？這是我的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};