Struct EnvVariablesProvider

pub struct EnvVariablesProvider { /* private fields */ }

A [Provider] that uses environment variables.

Implementations

impl EnvVariablesProvider

pub fn new( prefix: Option<impl Into<String>>, env_fetcher: impl Fn(&str) -> Result<String, VarError> + Send + Sync + 'static, dotenv_path: Option<PathBuf>, ) -> Self

Creates a new EnvProvider.

• prefix - The string prefix to use to distinguish an environment variable that should be used. If not set, the default prefix is used.
• env_fetcher - The function to use to fetch an environment variable.
• dotenv_path - The path to the .env file to load environment variables from. If not set, no .env file is loaded.

Trait Implementations

impl Debug for EnvVariablesProvider

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for EnvVariablesProvider

fn default() -> Self

Returns the “default value” for a type.

impl Provider for EnvVariablesProvider

fn get<'life0, 'life1, 'async_trait>( &'life0 self, key: &'life1 Key<'_>, ) -> Pin<Box<dyn Future<Output = Result<Option<String>>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Returns the value at the given config path, if it exists.