Struct EnvConfigProvider 

pub struct EnvConfigProvider { /* private fields */ }

Read-only environment variable configuration provider.

Environment variables are treated as immutable at runtime because modifying them is not thread-safe (requires unsafe in Rust 1.80+).

Implementations

impl EnvConfigProvider

pub fn new() -> Self

Create a new environment provider with no prefix

pub fn with_prefix(prefix: impl Into<String>) -> Self

Create an environment provider with a prefix

Trait Implementations

impl Clone for EnvConfigProvider

fn clone(&self) -> EnvConfigProvider

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl ConfigProvider for EnvConfigProvider

fn name(&self) -> &str

Provider name for logging

fn get_raw<'life0, 'life1, 'async_trait>( &'life0 self, key: &'life1 str, ) -> Pin<Box<dyn Future<Output = ConfigResult<Option<String>>> + Send + 'async_trait>>

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

Get a raw configuration value

fn set_raw<'life0, 'life1, 'life2, 'async_trait>( &'life0 self, _key: &'life1 str, _value: &'life2 str, ) -> Pin<Box<dyn Future<Output = ConfigResult<()>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait,

Set a raw configuration value

fn delete<'life0, 'life1, 'async_trait>( &'life0 self, _key: &'life1 str, ) -> Pin<Box<dyn Future<Output = ConfigResult<bool>> + Send + 'async_trait>>

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

Delete a configuration value

fn list_keys<'life0, 'life1, 'async_trait>( &'life0 self, prefix: &'life1 str, ) -> Pin<Box<dyn Future<Output = ConfigResult<Vec<String>>> + Send + 'async_trait>>

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

List keys matching a prefix

impl Debug for EnvConfigProvider

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

Formats the value using the given formatter.

impl Default for EnvConfigProvider

fn default() -> Self

Returns the “default value” for a type.