Struct InstantiationError 

pub struct InstantiationError<T> {
    pub request_id: T,
    pub request: Mutex<Request>,
    pub error: Arc<Error>,
}

Available on crate feature component-model-async only.

This error is returned if, when handling the request, a new worker and associated instance needed to be created, but instantiation failed, e.g. due to reaching a pooling allocator limit or running out of memory. In this case, the caller may be able to recover and retry (e.g. after waiting for existing instances to be dropped and/or freeing memory used by caches, etc.). Otherwise, it will probably need to return an HTTP 500 error.

Fields

request_id: T

The ID of the request which was originally configured,

request: Mutex<Request>

The original request passed to ProxyHandler::handle.

This is wrapped in a Mutex to satisfy the Send + Sync bounds required by wasmtime::Error.

error: Arc<Error>

The original instantiation error.

This is wrapped in an Arc because a single instantiation error may affect multiple requests, and each caller will be given a clone.

Trait Implementations

impl<T> Debug for InstantiationError<T>

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

Formats the value using the given formatter.

impl<T> Display for InstantiationError<T>

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

Formats the value using the given formatter.

impl<T> Error for InstantiationError<T>

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.