Firebase应用初始化失败，无效凭证（firebase功能初始化）

Question

根据the documentation：

如果您在云功能中使用Node.js Admin SDK，则可以通过functions.config（）变量自动初始化SDK：

admin.initializeApp(functions.config().firebase);

但是，当我尝试这个非常简单的代码时：

const functions = require('firebase-functions')
const admin = require('firebase-admin')

admin.initializeApp(functions.config().firebase)

exports.orhub = functions.https.onRequest((req, res) => {
    res.end()
})

我收到以下错误：

error: FIREBASE WARNING: {"code":"app/invalid-credential","message":"Credential implementation provided to initializeApp() via the \"credential\" property failed to fetch a valid Google OAuth2 access token with the following error: \"Error fetching access token: invalid_grant (Bad Request)\". There are two likely causes: (1) your server time is not properly synced or (2) your certificate key file has been revoked. To solve (1), re-sync the time on your server. To solve (2), make sure the key ID for your key file is still present at https://console.firebase.google.com/iam-admin/serviceaccounts/project. If not, generate a new key file at https://console.firebase.google.com/project/_/settings/serviceaccounts/adminsdk."}

我的Ubuntu pc有自动同步的日期和时区，所以这不是问题。我今天创建了这个项目，所以我得到了最新的模块。

所以有什么问题？文档中提到的“云功能”是否与Firebase功能相同？

Answer 1

从5.9.1版本firebase-admin开始，可以不加任何参数调用initializeApp。 See release notes here。我建议更新到最新版本。

Answer 2

Firebase SDK for Cloud Functions升级指南：beta版到1.0或更高版本https://firebase.google.com/docs/functions/beta-v1-diff

firebase-admin firebase-admin的新初始化语法现在已初始化，而Cloud Functions运行时中没有任何参数。

之前（<= v0.9.1）

const functions = require('firebase-functions');
const admin = require('firebase-admin');
admin.initializeApp(functions.config().firebase);

现在（> = v1.0.0）

const functions = require('firebase-functions');
const admin = require('firebase-admin');
admin.initializeApp();