Trait HandlerState 

pub trait HandlerState:
    'static
    + Sync
    + Send {
    type StoreData: Send;

    // Required methods
    fn new_store(
        &self,
        req_id: Option<u64>,
    ) -> Result<StoreBundle<Self::StoreData>>;
    fn request_timeout(&self) -> Duration;
    fn idle_instance_timeout(&self) -> Duration;
    fn max_instance_reuse_count(&self) -> usize;
    fn max_instance_concurrent_reuse_count(&self) -> usize;
    fn handle_worker_error(&self, error: Error);
}

Available on crate feature component-model-async only.

Represents the application-specific state of a web server.

Required Associated Types

type StoreData: Send

The type of the associated data for Stores created using [new_store].

Required Methods

fn new_store(&self, req_id: Option<u64>) -> Result<StoreBundle<Self::StoreData>>

Create a new Store for handling one or more requests.

The req_id parameter is the value passed in the call to ProxyHandler::spawn that created the worker to which the new Store will belong. See that function’s documentation for details.

fn request_timeout(&self) -> Duration

Maximum time allowed to handle a request.

In practice, a guest may be allowed to run up to 2x this time in the case of instance reuse to avoid penalizing concurrent requests being handled by the same instance.

fn idle_instance_timeout(&self) -> Duration

Maximum time to keep an idle instance around before dropping it.

fn max_instance_reuse_count(&self) -> usize

Maximum number of requests to handle using a single instance before dropping it.

fn max_instance_concurrent_reuse_count(&self) -> usize

Maximum number of requests to handle concurrently using a single instance.

fn handle_worker_error(&self, error: Error)

Called when a worker exits with an error.

Implementors