How to get Firebase Project Name or ID from Cloud Function

Question

I am using Cloud Functions and want to get the project name from within one of my Javascript server files. I know that value is stored in the .firebaserc, but I don't think that file is available on the server, right? I want to do something like this:

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

admin.getProjectName();  // or getProjectID()

or

functions.getProjectName(); 

Answer 1

Thank you @Frank. The answer is: process.env.GCLOUD_PROJECT .
I'm not sure where the variable process comes from, but this does work to get the project name.

Answer 2

Firebase admin SDK has access to that information for you.

const admin = require('firebase-admin');
const projectId = admin.instanceId().app.options.projectId

Answer 3

This worked for me. (node 10)

const FIREBASE_CONFIG = process.env.FIREBASE_CONFIG && JSON.parse(process.env.FIREBASE_CONFIG);
const projectId = FIREBASE_CONFIG.projectId;

Answer 4

试试这个 ：

const projectId = admin.instanceId().app['options_'].credential.projectId

Answer 5

Currently I'm using app.INTERNAL.credential_.projectId . This is clearly not save, but so far there is no cohesive way to get it (AFAIK)

Answer 6

This is a combination of the answers given above:

function getProjectID() {
  return firebaseInstance.options.projectId ||
    (firebaseInstance.options.credential && firebaseInstance.options.credential.projectId) || '';
}

Or in TypeScript:

function getProjectID(): string {
  return firebaseInstance.options.projectId ||
    (firebaseInstance.options.credential && (firebaseInstance.options.credential as unknown as { projectId: string }).projectId) || '';
}

Answer 7

For cloud functions running on newer versions of Node:

import firestore from "@google-cloud/firestore";

const client = new firestore.v1.FirestoreAdminClient();
const projectId = await client.getProjectId();

Answer 8

From the Firebase docs :

process.env.FIREBASE_CONFIG : Provides the following Firebase project config info:

 { databaseURL: 'https://databaseName.firebaseio.com', storageBucket: 'projectId.appspot.com', projectId: 'projectId' }

Note that since it's a JSON string you need to parse it like this:

const projectId = JSON.parse(process.env.FIREBASE_CONFIG).projectId;

Alternatively you could use the undocumented firebaseConfig() method from the firebase-functions package in your Cloud Functions, like so:

import { firebaseConfig } from "firebase-functions";
const projectId = firebaseConfig().projectId;

Additionally, Google Cloud Platform (which Firebase runs on top of) will automatically populate the environment variables documented here , depending on which runtime you're using.

Answer 9

The way to retrieve the project ID using admin SDK is

admin.appCheck().app.options.credential.projectId

This also works in headless setups like Docker where the environment variable GOOGLE_APPLICATION_CREDENTIALS is set.

Answer 10

You can use functions.config().firebase.projectId

PS the easiest way to initialize app is admin.initializeApp(functions.config().firebase);