Struct CompositeLogBackend 

pub struct CompositeLogBackend { /* private fields */ }

Thread-safe list of backends; also implements LogBackend by fan-out.

Implementations

impl CompositeLogBackend

pub fn new() -> Self

Empty backend list; use Logger::add to register sinks.

pub fn emit_all(&self, rec: &LogRecord<'_>) -> Result<(), EffectLoggerError>

Emit to every registered backend in order.

Trait Implementations

impl Default for CompositeLogBackend

fn default() -> Self

Returns the “default value” for a type.

impl LogBackend for CompositeLogBackend

fn emit(&self, rec: &LogRecord<'_>) -> Result<(), EffectLoggerError>

Deliver one record to this sink (e.g. write a line, call tracing, …).

impl Logger for CompositeLogBackend

fn add(&self, backend: Arc<dyn LogBackend>) -> Result<(), EffectLoggerError>

Append a backend to the ordered fan-out list.

fn replace( &self, idx: usize, backend: Arc<dyn LogBackend>, ) -> Result<(), EffectLoggerError>

Swap the backend at idx without changing list length.

fn remove(&self, idx: usize) -> Result<(), EffectLoggerError>

Remove the backend at idx, shifting later entries down.