Struct zng::config::SwapConfig

pub struct SwapConfig { /* private fields */ }

Represents a config source that can swap its backing config source without disconnecting any bound keys.

Note that the CONFIG service already uses this type internally.

Implementations

impl SwapConfig

pub fn new() -> SwapConfig

New with MemoryConfig backend.

pub fn load(&mut self, cfg: impl AnyConfig)

Load the config.

The previous source will be dropped and all active config variables are set and rebound to the new config.

Trait Implementations

impl AnyConfig for SwapConfig

fn get_raw( &mut self, key: Txt, default: RawConfigValue, insert: bool, shared: bool, ) -> Box<dyn VarBoxed<RawConfigValue>>

Gets a weak typed variable to the config key.

fn contains_key(&mut self, key: Txt) -> Box<dyn VarBoxed<bool>>

Gets a read-only variable that tracks if an entry for the key is in the backing storage.

fn status(&self) -> Box<dyn VarBoxed<ConfigStatus>>

Gets a read-only variable that represents the IO status of the config.

fn remove(&mut self, key: &Txt) -> bool

Removes the key from the backing storage.

fn low_memory(&mut self)

Cleanup and flush RAM caches.

impl Config for SwapConfig

fn get<T>( &mut self, key: impl Into<Txt>, default: T, insert: bool, ) -> Box<dyn VarBoxed<T>>

where T: ConfigValue,

Gets a variable that is bound to the config key.

impl Default for SwapConfig

fn default() -> SwapConfig

Returns the “default value” for a type.