gar_attach_auto_auth function

Auto Authentication function for use within .onAttach

To be placed within .onAttach to auto load an authentication file from an environment variable.

gar_attach_auto_auth(required_scopes, environment_var = "GAR_AUTH_FILE")

Arguments

• required_scopes: A character vector of minimum required scopes for this API library

• environment_var: The name of the environment variable where the file path to the authentication file is kept

  This function works with gar_auto_auth . It is intended to be placed within the .onAttach hook so that it loads when you load your library.

  For auto-authentication to work, the environment variable needs to hold a file path to an existing auth file such as created via gar_auth or a JSON file file download from the Google API console.

Returns

Invisible, used for its side effects of calling auto-authentication.

Examples

## Not run:

.onAttach <- function(libname, pkgname){

  googleAuthR::gar_attach_auto_auth("https://www.googleapis.com/auth/urlshortener", "US_AUTH_FILE")

}

## will only work if you have US_AUTH_FILE environment variable pointing to an auth file location
## .Renviron example
US_AUTH_FILE="/home/mark/auth/urlshortnerauth.json"
## End(Not run)

See Also

Other authentication functions: gar_auth(), gar_auth_service(), gar_auto_auth(), gar_gce_auth(), get_google_token(), should_skip_token_checks(), token_exists()