Struct Shell 

pub struct Shell {
    pub spawn: Arc<dyn Spawn>,
    pub clock: Arc<dyn Clock>,
    pub sleep: Arc<dyn Sleep>,
}

The three shell services a runtime node uses.

Fields

spawn: Arc<dyn Spawn>

Background work: function actors, stream actors and stateless workers.

clock: Arc<dyn Clock>

The time source.

sleep: Arc<dyn Sleep>

Waiting for timers, idle timeouts and ask timeouts.

Implementations

impl Shell

pub fn tokio() -> Self

The tokio shell: tokio::spawn, the system clock and tokio::time::sleep. Spawning needs a running tokio runtime.

pub fn virtual_time(start_ms: i64) -> (Self, VirtualClock)

A deterministic shell for tests: tokio spawning and a VirtualClock starting at start_ms that moves only when advanced.

Trait Implementations

impl Clone for Shell

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Shell

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.