how to get service-account.json to get signedURL in Firebase?

Question

I try to follow the answer in here Get Download URL from file uploaded with Cloud Functions for Firebase . to get the download URL for my image stored in Firebase storage

but i need to get service-account.json keyFilename when initializing gcs for the code below

const gcs = require('@google-cloud/storage')({keyFilename: 'service-account.json'})

I don't know how to set up {keyFilename: 'service-account.json'} correctly.but here is what I've done:

first, I generate the private key from here and name it as service-account.json https://console.firebase.google.com/project/yourprojectID/settings/serviceaccounts/adminsdk , the service-account.json contains information like this:

{ "type": "service_account", "project_id": "", "private_key_id": "", "private_key": , "client_email": "", "client_id": "", "auth_uri": "", "token_uri": "", "auth_provider_x509_cert_url": "", "client_x509_cert_url": "" }
and then place the file in the function folder and use it like the picture below:

but I get error from cloud function log:

{ Error: ENOENT: no such file or directory, open '../service-account.json'
    at Error (native)
  errno: -2,
  code: 'ENOENT',
  syscall: 'open',
  path: '../service-account.json' }

the gcs is actually used to generate thumbnail whenevet I upload an image to the storage using the code from here: https://github.com/firebase/functions-samples/blob/master/quickstarts/thumbnails/functions/index.js

Please edit your question to explain what it is you're observing that indicates you haven't set this up correctly. Is there an error message when running the code? — Doug Stevenson
thank you very much @DougStevenson , I have edited the question. — Agung Laksana
oh my God, newbie mistake, should be ./service-account.json instead of ../service-account.json . case closed — Agung Laksana
Feel free to answer your own question and mark it as accepted after enough time passes for SO to allow it. — Doug Stevenson
Hello Agung. What is the environment of this image? I should put service-account.json inside src folder and the link is here:github.com/android/play-billing-samples/tree/master/… I would appreciate if you tell me what I should do. which software? Or what should I do with those files in the link. — Namikaze Minato

Agung Laksana Agung Laksana · Accepted Answer · 2018-09-13T00:32:44

newbie mistake, should be ./service-account.json instead of ../service-account.json

how to get service-account.json to get signedURL in Firebase?

1 Answers