Struct Pool 

pub struct Pool { /* private fields */ }

Pool manages threadsafe access to a limited number of instances of multiple plugins

Implementations

impl Pool

pub fn new<F: 'static + Fn() -> Result<Plugin, Error> + Send + Sync>( source: F, ) -> Self

Create a new pool with the default configuration

pub fn new_from_builder<F: 'static + Fn() -> Result<Plugin, Error> + Send + Sync>( source: F, builder: PoolBuilder, ) -> Self

Create a new pool configured using a PoolBuilder

pub fn count(&self) -> usize

Get the number of live instances for a plugin (both checked out and available)

pub fn get(&self, timeout: Duration) -> Result<Option<PoolPlugin>, Error>

Get access to a plugin, this will create a new instance if needed (and allowed by the specified max_instances). Ok(None) is returned if the timeout is reached before an available plugin could be acquired

pub fn with_plugin<T>( &self, timeout: Duration, f: impl FnOnce(&mut Plugin) -> Result<T, Error>, ) -> Result<Option<T>, Error>

Access a plugin in a callback function. This calls Pool::get then the provided callback. Ok(None) is returned if the timeout is reached before an available plugin could be acquired

pub fn function_exists( &self, name: &str, timeout: Duration, ) -> Result<bool, Error>

Returns true if the given function exists, otherwise false. Results are cached after the first call.

Trait Implementations

impl Clone for Pool

fn clone(&self) -> Pool

Returns a duplicate of the value.

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

Performs copy-assignment from source.