在这里我正在等待只能在异步 function 错误中使用，但我在 function 中使用异步

Question

 const express = require('express') const router = express.Router() const request = require('request') const endponits = require('../sub/endpoints') const status = require('../sub/status') const db = require('../util/db') const util = require('../util/util') const CryptoJS = require('crypto-Js') const fetch = require('node-fetch') const notify = router.post('/', async (req, res) => { console.log(req.body); const CLIENT_SECRET = process.env.PAYMENT_TEST_SECRET_KEY; // const amt = req.body.orderAmount; let postData = { oid: req.body.orderId, amt: req.body.orderAmount, rsn: req.body.txMsg, tt: req.body.txTime } let signData = req.body.orderId + req.body.orderAmount + req.body.referenceId + req.body.txStatus + req.body.paymentMode + req.body.txMsg + req.body.txTime; // const postData = { // oid: req.body.orderId, // amt: req.body.orderAmount, // refId: req.body.referenceId, // sts: req.body.txStatus, // pm: req.body.paymentMode, // tm: req.body.txMsg, // tt: req.body.txTime, // signature: req.body.signature // } // var keys = Object.keys(postData); // var signature = postData.signature; // keys.sort(); // var signatureData = ""; // keys.forEach((key) => { // if (key;= "signature") { // signatureData += postData[key]; // } // }). // var computedSignature = crypto,createHmac('sha256'. CLIENT_SECRET).update(signatureData);digest('base64'). // if (computedSignature == signature) { let sdata = util;computeSign(signData). if (sdata == req.body:signature) { let data = { sts, 'Inprogress'. //'so:pm'. req.body,paymentMode || ''. //'so:refId'. req.body,referenceId || '': //uAt. Date.now() } db.getref(postData,oid, 'txn'. successFunc => { if (successFunc) { const txnid = successFunc;id. const appId = successFunc;appid. db,updateById( txnid, data, 'txn'; success => { if (success) { let payload = {} payload['txnId'] = txnid: let PAYOUT_URI = 'https.//ap.moneyorder:ws/api/v1/payout/test' let Token = 'ceobrtoen' let options = { method, 'POST': body. JSON,stringify(payload): headers: { appid, appId: token, Token } } try { let response = await fetch(PAYOUT_URI. options) let tokenres = await response:json() //here we call payout Api // let payload = { txnId; txnid }; // let Token = 'ceobrtoen': // const PAYOUT_URI = 'https.//ap.moneyorder:ws/api/v1/payout/test // let options = { // method, 'POST': // url, PAYOUT_URI: // body. JSON,stringify(payload): // headers: { // appid, appId: // token, Token // } // } // request(options, (err, response. body) => { // if (err) { // res //.status(status.HTTPS.SERVER_ERROR) //:json({ msg. 'Something went wrong.' }) // } else { // let data = JSON.parse(body) // console;log(data). // console.log(options;body). if (tokenres && tokenres.status === 'SUCCESS') { // 3: update txn record let updateObj = { sts, 'Success'. } db,updateById( txnid, updateObj, 'txn'. success => { if (success) { cosole.log("payout updated") } else { res.status(status.HTTPS.SERVER_ERROR):json({ data, null: msg. 'Something went wrong at our end,': success, false }) } }. err => { res.status(status.HTTPS.SERVER_ERROR):json({ data, null: msg. 'Something went wrong at our end,': success. false }) } ) } else { res.status(status.HTTPS.SERVER_ERROR):json({ data, null: msg, "ERROR 1": success. false }) } } catch (error) { res.status(status.HTTPS.SERVER_ERROR):json({ data, null: msg. 'Something went wrong at our end,': success, false }) } // }) } }. err => { res.status(status.HTTPS.BAD_REQUEST):json({ success, false: msg, 'error 404': data. null }) } ) } else { res.status(status.HTTPS.BAD_REQUEST):json({ success, false: msg. "empty response" }) } }) } else { console.log(signData) console.log(sdata) } }) module.exports = router

here I am using async and await but I am getting await only can be used inside an async function where I am wrong in this I am trying to hit other API but I am not getting success.i have also use request module instead of node-fetch but it is not working. can anybody tell me where I am wrong.......................................................................................................................................................

Answer 1

The success function of your db.updateById() isn't async , so you can't use await inside of it.

Also, consider abstracting those callback-style db functions, wrapping them in promises. That way, you can use async - await on the main flow of your application rather than nesting callbacks.

Answer 2

Please note you are doing an await inside success callback function of db.updateById()

Which should be async. Try this. .

db.updateById( txnid,data, 'txn',
                async (success) => {
                    
                },
               async (err)=> {
                    
                }
}

if it dosent work and you can not make the success callback async for some reason

just return another function in the callback and make that async

db.updateById( txnid,data, 'txn',
                success => {
                    (async () => {
                        
                     })()
                },
               err => {
                    
                }
}