Firebase-functions: What incorrect Metadata-Flavor header at GoogleAuth means?

[adrielwerlich]

Related issues

[REQUIRED] Version info

Ask Question

I´m trying to write to firestore from a onCall firebase function.
My purpose is to update the client when something is written in firestore.

  fireApp.firestore().collection('queries').doc(this.getUser.uid).onSnapshot(snap => {
    snap.exists ?
    snap.docChanges().forEach(async change => {
        if (change.type === "modified") {

Would exist any other alternative to update client side from function progress?
node:

node v 12
firebase-functions:
"firebase-functions": "^2.3.0"

firebase-tools:
firebase tools --version
6.10.0

firebase-admin:
"firebase-admin": "~7.0.0",

[REQUIRED] Test case

let getLinks = fireApp.functions().httpsCallable('getLinks')

                getLinks({
                    query: this.query.string,
                    limit: this.query.limit,
                    country: this.query.country,
                    uid: this.getUser.uid
                }).then(result => {

[REQUIRED] Steps to reproduce

So I´m trying to write to firestore from this onCall function with this code

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))

```

[REQUIRED] Expected behavior

Should create the respective document in the queries collection

[REQUIRED] Actual behavior

writing to firestore 2 error Error: Unexpected error determining execution environment: Invalid response from metadata service: incorrect Metadata-Flavor header.
at GoogleAuth. (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 ()
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)

Were you able to successfully deploy your functions?

didn´t try to deploy function yet.. I´m running it locally through the firebase serve --only functions command

[google-oss-bot]

I found a few problems with this issue:

• I couldn't figure out how to label this issue, so I've labeled it for a human to triage. Hang tight.
• This issue does not have all the information required by the template. Looks like you forgot to fill out some sections. Please update the issue with more information.

[adrielwerlich]

Solved
It required propper initialization
const credential = require('./xxxxx.json')

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

this link (https://www.youtube.com/watch?v=Z87OZtIYC_0)
explains how to initialize it properly

my unexperienced with the sdk yet...

[thechenky]

Thanks for the detailed report and sharing your solution @adrielwerlich. For future issues like these, StackOverflow is usually the best resource as you can get faster help there :) glad you figured it out!

[cajasdavid]

adriel's video link worked perfectly to solve my issue