Module: Google::Auth

Defined in:
lib/googleauth/iam.rb,
lib/googleauth/version.rb,
lib/googleauth/client_id.rb,
lib/googleauth/scope_util.rb,
lib/googleauth/credentials.rb,
lib/googleauth/token_store.rb,
lib/googleauth/user_refresh.rb,
lib/googleauth/compute_engine.rb,
lib/googleauth/service_account.rb,
lib/googleauth/user_authorizer.rb,
lib/googleauth/credentials_loader.rb,
lib/googleauth/application_default.rb,
lib/googleauth/default_credentials.rb,
lib/googleauth/web_user_authorizer.rb,
lib/googleauth/stores/file_token_store.rb,
lib/googleauth/stores/redis_token_store.rb

Overview

Module Auth provides classes that provide Google-specific authorization used to access Google APIs.

Defined Under Namespace

Modules: CredentialsLoader, ScopeUtil, Stores Classes: ClientId, Credentials, DefaultCredentials, GCECredentials, IAMCredentials, ServiceAccountCredentials, ServiceAccountJwtHeaderCredentials, TokenStore, UserAuthorizer, UserRefreshCredentials, WebUserAuthorizer

Constant Summary collapse

VERSION = 
'0.6.2'.freeze
NO_METADATA_SERVER_ERROR = 
"Error code 404 trying to get security access token\nfrom Compute Engine metadata for the default service account. This\nmay be because the virtual machine instance does not have permission\nscopes specified.\n".freeze
UNEXPECTED_ERROR_SUFFIX = 
"trying to get security access token from Compute Engine metadata for\nthe default service account\n".freeze
NOT_FOUND_ERROR = 
"Could not load the default credentials. Browse to\nhttps://developers.google.com/accounts/docs/application-default-credentials\nfor more information\n".freeze

Class Method Summary collapse

Class Method Details

.get_application_default(scope = nil, options = {}) ⇒ Object

Obtains the default credentials implementation to use in this environment.

Use this to obtain the Application Default Credentials for accessing Google APIs. Application Default Credentials are described in detail at goo.gl/IUuyuX.

If supplied, scope is used to create the credentials instance, when it can be applied. E.g, on google compute engine and for user credentials the scope is ignored.

Parameters:

  • scope (string|array|nil) (defaults to: nil) —

    the scope(s) to access

  • options (hash) (defaults to: {}) —

    allows override of the connection being used

Raises:



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# File 'lib/googleauth/application_default.rb', line 56

def get_application_default(scope = nil, options = {})
  creds = DefaultCredentials.from_env(scope) ||
          DefaultCredentials.from_well_known_path(scope) ||
          DefaultCredentials.from_system_default_path(scope)
  return creds unless creds.nil?
  raise NOT_FOUND_ERROR unless GCECredentials.on_gce?(options)
  GCECredentials.new
end