Get Download URL from file uploaded with Cloud Functions for Firebase

Question

After uploading a file in Firebase Storage with Functions for Firebase, I\'d like to get the download url of the file.

I have this :

...

return buck         


        

Answer 1

Without signedURL() using makePublic()

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

admin.initializeApp()
var bucket = admin.storage().bucket();

// --- [Above] for admin related operations, [Below] for making a public url from a GCS uploaded object

const { Storage } = require('@google-cloud/storage');
const storage = new Storage();

exports.testDlUrl = functions.storage.object().onFinalize(async (objMetadata) => {
    console.log('bucket, file', objMetadata.bucket + ' ' + objMetadata.name.split('/').pop()); // assuming file is in folder
    return storage.bucket(objMetadata.bucket).file(objMetadata.name).makePublic().then(function (data) {
        return admin.firestore().collection('publicUrl').doc().set({ publicUrl: 'https://storage.googleapis.com/' + objMetadata.bucket + '/' + objMetadata.name }).then(writeResult => {
            return console.log('publicUrl', writeResult);
        });
    });
});