Method on_event

src/log.rs:68–101

(&self, event: &Event<'_>, _ctx: Context<'_, S>)

    S: Subscriber + for<'a> LookupSpan<'a>,
{
    fn on_event(&self, event: &Event<'_>, _ctx: Context<'_, S>) {
        struct FieldVisitor(Option<String>);

        impl<'a> Visit for FieldVisitor {
            fn record_debug(&mut self, field: &Field, value: &dyn Debug) {
                if field.name() == "message" {
                    self.0 = Some(format!("{:?}", value))
                }
            }
        }

        let mut visitor = FieldVisitor(None);

        event.record(&mut visitor);

        let Some(message) = visitor.0 else {
            return;
        };

        let meta = event.metadata();

        let mut ring = self.ring.lock().unwrap();

        if ring.len() > LOG_RING_CAP {
            ring.pop_front();
        }

        ring.push_back(LoggedMessage {
            time: chrono::Utc::now(),
            level: *meta.level(),
            target: meta.target().to_owned(),
            message,
        });
    }
}