Struct Closure 

pub struct Closure { /* private fields */ }

A Load implementation whose behaviour is supplied by a closure.

Reach for this instead of a full impl Load when the loader is small, stateless, or a one-off adapter. See the module docs for a complete example.

Implementations

impl Closure

pub fn new<N, L, S>(name: N, loader: L, source: S) -> Self

where N: Into<String>, L: Fn(Source) -> Result<Vec<Payload>, Error> + Send + Sync + 'static, S: Into<String>,

Build a closure-backed loader.

• name — the loader name used in error messages.
• loader — the closure run by load; same shape as the trait method.
• source — the single source string this loader handles (widen later with Closure::with_supported_source_list).

pub fn with_name<N: AsRef<str>>(self, name: N) -> Self

Override the loader name reported by Load::name.

pub fn with_supported_source_list<S: AsRef<str>>( self, supported_source_list: Vec<S>, ) -> Self

Replace the list of source strings this loader handles (e.g. ["http", "https"]).

Trait Implementations

impl Load for Closure

fn name(&self) -> &str

Human-readable name used in error messages.

fn supported_source_list(&self) -> Vec<String>

Source strings this loader handles (e.g. ["env"], ["file"], ["http", "https"]).

fn load(&self, source: Source) -> Result<Vec<Payload>, Error>

Load raw bytes from the source. Returns one Payload per config entry found.