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/json_key_reader.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, JsonKeyReader, ScopeUtil, Stores Classes: ClientId, Credentials, DefaultCredentials, GCECredentials, IAMCredentials, ServiceAccountCredentials, ServiceAccountJwtHeaderCredentials, TokenStore, UserAuthorizer, UserRefreshCredentials, WebUserAuthorizer

Constant Summary collapse

VERSION =
'0.8.0'.freeze
NO_METADATA_SERVER_ERROR =
<<ERROR.freeze
Error code 404 trying to get security access token
from Compute Engine metadata for the default service account. This
may be because the virtual machine instance does not have permission
scopes specified.
ERROR
UNEXPECTED_ERROR_SUFFIX =
<<ERROR.freeze
trying to get security access token from Compute Engine metadata for
the default service account
ERROR
NOT_FOUND_ERROR =
<<ERROR_MESSAGE.freeze
Could not load the default credentials. Browse to
https://developers.google.com/accounts/docs/application-default-credentials
for more information
ERROR_MESSAGE

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: {})

    Connection options. These may be used to configure the `Faraday::Connection` used for outgoing HTTP requests. For example, if a connection proxy must be used in the current network, you may provide a connection with with the needed proxy options. The following keys are recognized:

    • `:default_connection` The connection object to use for token refresh requests.

    • `:connection_builder` A `Proc` that creates and returns a connection to use for token refresh requests.

    • `:connection` The connection to use to determine whether GCE metadata credentials are available.


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# File 'lib/googleauth/application_default.rb', line 66

def get_application_default(scope = nil, options = {})
  creds = DefaultCredentials.from_env(scope, options) ||
          DefaultCredentials.from_well_known_path(scope, options) ||
          DefaultCredentials.from_system_default_path(scope, options)
  return creds unless creds.nil?
  unless GCECredentials.on_gce?(options)    # Clear cache of the result of GCECredentials.on_gce?

    GCECredentials.unmemoize_all
    raise NOT_FOUND_ERROR
  end
  GCECredentials.new
end