Trait Handler 

pub trait Handler: Send + Sync {
    // Required methods
    fn handle(&self, record: &Record<'_>);
    fn formatter(&self) -> &Formatter;
}

A sink for log records. Implementors render the record (via their Formatter) and deliver it somewhere (stdout, a file, …).

Handlers are shared across threads (Send + Sync) since a logger may be logged to concurrently.

Required Methods

fn handle(&self, record: &Record<'_>)

Renders and writes a single record.

fn formatter(&self) -> &Formatter

The formatter this handler uses (the logger reads its time_format).

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl<W: Write + Send> Handler for StreamHandler<W>