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Downloading files from google cloud storage using service account authentication with nodejs google-api-nodejs-client

Last updated at Posted at 2014-09-09

Accessing Google API using Service Account in Node.js was quite helpful for me but it was little bit out of date(due to written based on older api library).

I put my version of snippet which works with latest nodejs client library. Hope it helps :sparkles:

#!/usr/bin/env coffee
googleapis = require('googleapis')

email = SERVICE_ACCOUNT_EMAIL
# see https://developers.google.com/storage/docs/authentication#converting-the-private-key for how to convert .p12 to .pem
keypath = SERVICE_ACCOUNT_PEM
key = null

storage = googleapis.storage('v1')

# see https://developers.google.com/storage/docs/authentication
# for auth url
authClient = new googleapis.auth.JWT(email, keypath, key, ['https://www.googleapis.com/auth/devstorage.read_only'] )

authClient.authorize (err, tokens) ->
  if (err)
    console.log(err)
    return

  storage.objects.get {
    auth: authClient,
    bucket: 'billing-exports',
    object: 'bill-2014-09-08.json?alt=media' # add '?alt=media' to download the file itself.
  }, (err, file) ->
    console.log err, file

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