pub trait Manager: Sync + Send {
type Type;
type Error;
// Required methods
fn create(&self) -> impl Future<Output = Result<Self::Type, Self::Error>>;
fn recycle(
&self,
obj: &mut Self::Type,
metrics: &Metrics
) -> impl Future<Output = RecycleResult<Self::Error>>;
// Provided method
fn detach(&self, _obj: &mut Self::Type) { ... }
}
Available on crate feature
managed
only.Expand description
Manager responsible for creating new Object
s or recycling existing ones.
Required Associated Types§
Required Methods§
sourcefn create(&self) -> impl Future<Output = Result<Self::Type, Self::Error>>
fn create(&self) -> impl Future<Output = Result<Self::Type, Self::Error>>
Creates a new instance of Manager::Type
.
sourcefn recycle(
&self,
obj: &mut Self::Type,
metrics: &Metrics
) -> impl Future<Output = RecycleResult<Self::Error>>
fn recycle( &self, obj: &mut Self::Type, metrics: &Metrics ) -> impl Future<Output = RecycleResult<Self::Error>>
Tries to recycle an instance of Manager::Type
.
§Errors
Returns Manager::Error
if the instance couldn’t be recycled.
Provided Methods§
sourcefn detach(&self, _obj: &mut Self::Type)
fn detach(&self, _obj: &mut Self::Type)
Detaches an instance of Manager::Type
from this Manager
.
This method is called when using the Object::take()
method for
removing an Object
from a Pool
. If the Manager
doesn’t hold
any references to the handed out Object
s then the default
implementation can be used which does nothing.
Object Safety§
This trait is not object safe.