Trait Observer 

pub trait Observer {
    // Provided methods
    fn step(&mut self, step: &dyn FlightStep) -> Result<(), SimError> { ... }
    fn event(&mut self, event: &FlightEvent) { ... }
}

Watches a flight as it runs. Both methods do nothing by default; () watches nothing.

Provided Methods

fn step(&mut self, step: &dyn FlightStep) -> Result<(), SimError>

Sees every accepted integration step, in order.

Errors

An error stops the flight and is returned from it.

fn event(&mut self, event: &FlightEvent)

Sees every flight event as it is recorded.

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 ()

impl<A: Observer, B: Observer> Observer for (A, B)

Two observers watch one flight: each sees every step and event, the first before the second.

fn step(&mut self, step: &dyn FlightStep) -> Result<(), SimError>

fn event(&mut self, event: &FlightEvent)

impl<T: Observer + ?Sized> Observer for &mut T

An observer lent to a flight, so the caller keeps it.

fn step(&mut self, step: &dyn FlightStep) -> Result<(), SimError>

fn event(&mut self, event: &FlightEvent)

Implementors

impl Observer for FlightMetrics

impl Observer for Recorder