我正在构建一个移动应用程序，在一些操作(如userCreate(上，我触发一些Firebase函数来执行对第三个服务的API调用，然后在Firestore数据库中写入一些内容。
理论上一切都有效，但在实践中，API调用相当快(即使在冷启动场景中也是如此(，但数据库写入可能需要几分钟才能完成(如果确实如此，我怀疑有时会花费太长时间并超时(。
由于API调用工作正常，DB在某些情况下也会编写，我怀疑这只是由于非常我对异步管理不善，因为我对JS一无所知。
下面是这个问题所涉及的许多示例函数中的两个，只是为了展示当我在Create或HTTPS上触发函数时会发生这种情况。
onCreate函数
const functions = require("firebase-functions");
const axios = require('axios')
// The Firebase Admin SDK to access the Firestore.
const admin = require('firebase-admin');
admin.initializeApp();
// Third party service credentials generation during onCreate request
exports.
buildCredentials = functions.auth.user().onCreate((user) => {
// Request to Third party to generate an Client Access Token
axios({
method: "post",
url: "https://api.ThirdParty.com/api/v1/oauth/token",
data: "client_id=xxx&client_secret=yyy&grant_type=client_credentials&scope=all:all",
headers: { "Content-Type": "application/x-www-form-urlencoded" },
})
.then(function (response) {
//handle success
console.log('new user created: ')
console.log(user.id);
console.log(response.data);
// We write a new document in the users collection with the user ID and the Client Access Token
const db = admin.firestore();
const newUser = {
uid: user.uid,
clientAccessToken: response.data.access_token
};
db.collection('users').doc(user.uid).set(newUser)
.catch(function (error) {
//handle error
console.log(error);
});
})
.catch(function (response) {
//handle error
console.log(response);
});
})
HTTPS onCall功能
exports.paymentRequest = functions.https.onCall(async (data, context) => {
const clientAccessToken = data.clientAccessToken;
const recipientIban = data.recipientIban;
const recipientName = data.recipientName;
const paymentDescription = data.paymentDescription;
const paymentReference = data.paymentReference;
const productPrice = parseInt(data.productPrice);
const uid = data.uid;
const jsonData = {
"destinations": [
{
"accountNumber": recipientIban,
"type": "iban"
}
],
"amount": productPrice,
"currency": "EUR",
"market": "FR",
"recipientName": recipientName,
"sourceMessage": paymentDescription,
"remittanceInformation": {
"type": "UNSTRUCTURED",
"value": paymentReference
},
"paymentScheme": "SEPA_INSTANT_CREDIT_TRANSFER"
};
(async function(){
response = await axios({
method: "post",
url: "https://api.ThirdParty.com/api/v1/pay",
headers: {
'Content-Type': 'application/json',
Accept: 'application/json',
Authorization: `Bearer ${clientAccessToken}`,},
data: jsonData,
})
// We write a the payment request ID in the user's document
const db = admin.firestore();
const paymentRequestID = response.data.id;
db.collection('users').doc(uid).set({
paymentRequestID: paymentRequestID
}, { merge: true })
.catch(function (error) {
//handle error
console.log(error);
});
console.log(response.data)
return response.data
})()
})
我是否正确地认为这是一个异步问题？还是Firebase/Firestore的问题？
感谢
您没有返回异步方法(axios()和set()(返回的promise，可能会生成一些"不稳定"；Cloud函数的行为。
正如你将在关于"；JavaScript承诺"；从官方的Firebase视频系列中，您必须在后台触发的云函数中返回Promise或值，以向平台表明它已经完成，并避免在异步操作完成之前终止或在工作完成后继续运行。
以下的适应应该做到这一点(未经测试(：
on创建函数：
buildCredentials = functions.auth.user().onCreate((user) => {
// Request to Third party to generate an Client Access Token
return axios({
method: "post",
url: "https://api.ThirdParty.com/api/v1/oauth/token",
data: "client_id=xxx&client_secret=yyy&grant_type=client_credentials&scope=all:all",
headers: { "Content-Type": "application/x-www-form-urlencoded" },
})
.then(function (response) {
//handle success
console.log('new user created: ')
console.log(user.id);
console.log(response.data);
// We write a new document in the users collection with the user ID and the Client Access Token
const db = admin.firestore();
const newUser = {
uid: user.uid,
clientAccessToken: response.data.access_token
};
return db.collection('users').doc(user.uid).set(newUser)
})
.catch(function (response) {
//handle error
console.log(response);
return null;
});
})
可调用函数：
exports.paymentRequest = functions.https.onCall(async (data, context) => {
try {
const clientAccessToken = data.clientAccessToken;
const recipientIban = data.recipientIban;
const recipientName = data.recipientName;
const paymentDescription = data.paymentDescription;
const paymentReference = data.paymentReference;
const productPrice = parseInt(data.productPrice);
const uid = data.uid;
const jsonData = {
// ...
};
const response = await axios({
method: "post",
url: "https://api.ThirdParty.com/api/v1/pay",
headers: {
'Content-Type': 'application/json',
Accept: 'application/json',
Authorization: `Bearer ${clientAccessToken}`,
},
data: jsonData,
})
// We write a the payment request ID in the user's document
const db = admin.firestore();
const paymentRequestID = response.data.id;
await db.collection('users').doc(uid).set({
paymentRequestID: paymentRequestID
}, { merge: true })
console.log(response.data)
return response.data
} catch (error) {
// See https://firebase.google.com/docs/functions/callable#handle_errors
}
})