Unable to upload and image in googledrive using goolge ruby API

Question

I am first time using Google APIs. I am unable to upload any file in Google Drive. I tried below complete code.

require 'google/apis/drive_v2'
require 'google/api_client/client_secrets'

# I downloaded 'client_secrets.json' file from 'https://console.developers.google.com/projectselector/apis/library' and put in lib folder

CLIENT_SECRETS_FILE = "client_secrets.json"
client_secrets_filepath = File.expand_path(CLIENT_SECRETS_FILE ,"#{File.dirname(__FILE__)}/../../lib/")

 CLIENT_SECRETS = Google::APIClient::ClientSecrets.load(client_secrets_filepath)
 authorization = CLIENT_SECRETS.to_authorization

 Drive = Google::Apis::DriveV2
 @drive = Drive::DriveService.new
 @drive.authorization = authorization

file_path = File.expand_path(@ScreenShot_dir)+'/'+"imageName" +'.png'

metadata = Drive::File.new(title: 'My document')
metadata = @drive.insert_file(metadata, upload_source: file_path, content_type: 'image/png')

It is not uploading the file in drive but giving an error like "missing authorization code".

my client_secrets.json look like below:

{"installed":{
"client_id":"<some digits>.apps.googleusercontent.com",
"project_id":"<projectname>","auth_uri":"https://accounts.google.com/o/oauth2/auth",
"token_uri":"https://accounts.google.com/o/oauth2/token",
"auth_provider_x509_cert_url":"https://www.googleapis.com/oauth2/v1/certs",
"client_secret":"<secret key>",
"redirect_uris":["urn:ietf:wg:oauth:2.0:oob","http://localhost"]}}

I am not sure what I am missing in it. Appreciate any help on this issue.

Answer 1

"missing authorization code"

Means that you have not properly authenticated your code.

You should check the Ouath2 documentation for the client library. Get one of the samples there working then you should be able to alter it for Drive without to much trouble.

# AdSense Management API command-line sample.
require 'google/apis/adsense_v1_4'
require 'google/api_client/client_secrets'
require 'google/api_client/auth/installed_app'
require 'google/api_client/auth/storage'
require 'google/api_client/auth/storages/file_store'
require 'logger'
require 'json'

CREDENTIAL_STORE_FILE = "#{$0}-oauth2.json"

# Handles authentication and loading of the API.
def setup
  log_file = File.open('adsense.log', 'a+')
  log_file.sync = true
  logger = Logger.new(log_file)
  logger.level = Logger::DEBUG

  adsense = Google::Apis::AdsenseV1_4::AdSenseService.new

  # Stores auth credentials in a file, so they survive multiple runs
  # of the application. This avoids prompting the user for authorization every
  # time the access token expires, by remembering the refresh token.
  # Note: FileStorage is not suitable for multi-user applications.
  storage = Google::APIClient::Storage.new(
    Google::APIClient::FileStore.new(CREDENTIAL_STORE_FILE))
  adsense.authorization = storage.authorize
  if storage.authorization.nil?
    client_secrets = Google::APIClient::ClientSecrets.load
    # The InstalledAppFlow is a helper class to handle the OAuth 2.0 installed
    # application flow, which ties in with Stroage to store credentials
    # between runs.
    flow = Google::APIClient::InstalledAppFlow.new(
      :client_id => client_secrets.client_id,
      :client_secret => client_secrets.client_secret,
      :scope => ['https://www.googleapis.com/auth/adsense.readonly']
    )
    adsense.authorization = flow.authorize(storage)
  end
  return adsense
end

# Generates a report for the default account.
def generate_report(adsense)
  report = adsense.generate_report(start_date: '2011-01-01', end_date: '2011-08-31',
                                   metric: %w(PAGE_VIEWS AD_REQUESTS AD_REQUESTS_COVERAGE
                                              CLICKS AD_REQUESTS_CTR COST_PER_CLICK
                                              AD_REQUESTS_RPM EARNINGS),
                                   dimension: %w(DATE),
                                   sort: %w(+DATE))

  # Display headers.
  report.headers.each do |header|
    print '%25s' % header.name
  end
  puts

  # Display results.
  report.rows.each do |row|
    row.each do |column|
      print '%25s' % column
    end
    puts
  end
end


if __FILE__ == $0
  adsense = setup()
  generate_report(adsense)
end