【问题标题】：What incorrect Metadata-Flavor header at GoogleAuth means?GoogleAuth 中不正确的 Metadata-Flavor 标头是什么意思？
【发布时间】：2019-05-31 22:15:08
【问题描述】：

我正在尝试从 onCall firebase 函数写入 firestore

functions.js

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


admin.initializeApp();



console.log('initialing functions at ' , new Date().toString())


exports.getLinks = functions.runWith({ timeoutSeconds: 540 }).https.onCall( (data,context) => {

    console.log('starting to get links ' , new Date().toString())
    console.log('data' , data.query, data.limit, data.country, data.uid)
    console.log('context auth', context.auth, 'context.auth.uid', context.auth.uid)
    // is there anything like admin.setCredentials(context.auth) necessary here?
    const queries = admin.firestore().collection('queries');
    let uid = data.uid
    console.log('uid', uid);
    console.log('queries ref', queries)
    //probably when trying to write here is not being allowed
    queries.doc(uid).set({LinksArrayLength: 'starting'})
        .then( r => console.log('writing to firestore 1 result', r))
        .catch( err => console.error('writing to firestore 2 error', err))

控制台输出是这样的

2019 年 5 月 31 日星期五 19:01:10 GMT-0300 (GMT-03:00) 开始获取链接

数据在任何地方销售 2 com fwfwqe 上下文认证{ uid: 'f23oij2ioafOIJOeofiwjOIJ', 令牌：{ 问题：'https://securetoken.google.com/was98oinr-fa4c9', aud: 'was234r-f32c9', 授权时间：1559327744， user_id: 'f23oij2ioafOIJOeofiwjOIJ', sub: 'f23oij2ioafOIJOeofiwjOIJ', iat: 1559338208, exp: 1559341808, 电子邮件：'awef3h@gmail.com', email_verified：假， firebase：{身份：[对象]，sign_in_provider：'密码'}， uid: 'f23oij2ioafOIJOeofiwjOIJ' } } context.auth.uid f23oij2ioafOIJOeofiwjOIJ uid f1EMxzwjJlTaH3u7RAYsySx0MZV2 查询参考 CollectionReference { _firestore：Firestore { _设置：{ 项目ID：'xxx'， firebaseVersion: '7.0.0', libName: 'gccl', libVersion：'1.3.0 fire/7.0.0' },

然后不允许对firestore的写入请求？

writing to firestore 2 error Error: Unexpected error determining execution environment: Invalid response from metadata service: incorrect Metadata-Flavor header.
>      at GoogleAuth.<anonymous> (H:\nprojetos\whats_app_sender\firebase_sender\vue_sender\wa_sender\functions\node_modules\google-auth-library\build\src\auth\googleauth.js:164:23)
>      at Generator.throw (<anonymous>)
>      at rejected (H:\nprojetos\whats_app_sender\firebase_sender\vue_sender\wa_sender\functions\node_modules\google-auth-library\build\src\auth\googleauth.js:20:65)
>      at processTicksAndRejections (internal/process/task_queues.js:89:5)

如何确保将 request.auth.uid 发送到 firestore 写入请求？

Firestore 规则

service cloud.firestore {
  match /databases/{database}/documents {
    match /{document=**} {
      allow read, write;//: if request.auth.uid != null;
// even when commented and allowing all requests still giving the error //message
    }
  }
}

即使完全允许仍继续给出错误。

当某些内容被写入集合（'查询'）时，我正在尝试写入 firestore 以更新客户端......以便客户端收到函数进度的通知...... 还有更好的方法吗？

在客户端，代码是这样的

客户端

fireApp.firestore().collection('queries').doc(this.getUser.uid).onSnapshot(snap => {
                    debugger
                    console.log('snap', snap)

                    snap.exists ?
                    snap.docChanges().forEach(async change => {
                        if (change.type === "modified") {
                         _vue.updating = true // the function is in progress

【问题讨论】：

标签： node.js firebase google-cloud-firestore google-cloud-functions

【解决方案1】：

已解决它只需要适当的初始化

const credential = require('./xxxxx.json')

admin.initializeApp({credential: admin.credential.cert(credential),
databaseURL: "https://xxx.xxx.firebaseio.com"
});

此链接 (https://www.youtube.com/watch?v=Z87OZtIYC_0) 解释如何正确初始化它

【讨论】：