Struct HostPoolBuilder 

pub struct HostPoolBuilder { /* private fields */ }

Builder for a HostPool

Implementations

impl HostPoolBuilder

pub fn new() -> Self

Instantiate a nnew HostPoolBuilder with default settings.

let builder = HostPoolBuilder::new();

pub fn name<T: AsRef<str>>(self, name: T) -> Self

Set the name for the HostPool.

let builder = HostPoolBuilder::new().name("My Module");

pub fn factory<F>(self, factory: F) -> Self

where F: Fn() -> WapcHost + Send + Sync + 'static,

Set the WapcHost generator function to use when spawning new workers.

let engine = wasmtime_provider::WasmtimeEngineProvider::new(&bytes, None).unwrap();
let pool = HostPoolBuilder::new()
  .factory(move || {
    let engine = engine.clone();
    WapcHost::new(Box::new(engine), None).unwrap()
  })
  .build();

pub fn min_threads(self, min: usize) -> Self

Set the minimum, base number of threads to spawn.

let builder = HostPoolBuilder::new().min_threads(1);

pub fn max_threads(self, max: usize) -> Self

Set the upper limit on the number of threads to spawn.

let builder = HostPoolBuilder::new().max_threads(5);

pub fn max_idle(self, timeout: Duration) -> Self

Set the timeout for threads to self-close.

let builder = HostPoolBuilder::new().max_idle(Duration::from_secs(60));

pub fn max_wait(self, duration: Duration) -> Self

Set the maximum amount of time to wait before spawning a new worker.

let builder = HostPoolBuilder::new().max_wait(Duration::from_millis(100));

pub fn build(self) -> HostPool

Builds a HostPool with the current configuration. Warning: this will panic if a factory function is not supplied.

let engine = wasmtime_provider::WasmtimeEngineProvider::new(&bytes, None).unwrap();
let pool = HostPoolBuilder::new()
  .factory(move || {
    let engine = engine.clone();
    WapcHost::new(Box::new(engine), None).unwrap()
  })
  .build();

Trait Implementations

impl Debug for HostPoolBuilder

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

Formats the value using the given formatter.

impl Default for HostPoolBuilder

fn default() -> Self

Returns the “default value” for a type.