Struct Cerr 

pub struct Cerr<F>
where
    F: MessageFormatter,
{ /* private fields */ }

A logging Service that targets the standard error stream (std::io::stderr).

Cerr service is typically used for high-priority alerts or diagnostic information that should remain visible even if stdout is redirected to a file.

Implementations

impl<F> Cerr<F>

where F: MessageFormatter,

pub fn new() -> Box<Self>

Creates a new Cerr on the heap.

pub fn with_formatter(formatter: F) -> Box<Self>

Creates a new Cerr service on the heap with a custom formatter.

Trait Implementations

impl<F> Fallback for Cerr<F>

where F: MessageFormatter + 'static,

fn fallback(&self, error: &ServiceError, msg: &Message)

Fallback for stderr failures. Paradoxically attempts to log the failure to stdout as a last-resort communication channel.

impl<F> Service for Cerr<F>

where F: MessageFormatter + 'static,

fn work(&self, msg: &Message) -> Result<(), ServiceError>

Acquires the formatter lock and writes to the global stderr.

Errors

Returns ServiceError::LockPoisoned if the internal formatter mutex is poisoned.

fn status(&self) -> LoggerStatus

Returns the current operational [LoggerStatus] of the service.

fn as_any(&self) -> &dyn Any

Returns a reference to the underlying type as Any for downcasting.