Trait Observer 

pub trait Observer {
    // Provided methods
    fn phase_started(&mut self, _phase: &Phase) { ... }
    fn phase_finished(&mut self, _stats: &PhaseStats) { ... }
}

Runs on the caller at phase boundaries, never on the request path.

Provided Methods

fn phase_started(&mut self, _phase: &Phase)

Workers are ready but no request from this phase has been sent.

fn phase_finished(&mut self, _stats: &PhaseStats)

Every admitted attempt has completed, failed or reached its timeout.

Dyn Compatibility

This trait is dyn compatible.

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

Implementations on Foreign Types

impl Observer for ()

Implementors