Enum TaskStoreError 

#[non_exhaustive]
pub enum TaskStoreError {
    Encode(String),
    Decode(String),
    Backend(String),
}

Errors returned by TaskStore implementations.

Mirrors the three-variant shape of SessionStoreError: encode and decode errors from (de)serializing task state, and catch-all backend errors from the storage layer. MemoryTaskStore never returns errors; the variants exist for external implementations.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Encode(String)

Failed to encode task state (e.g. serde serialization error).

Decode(String)

Failed to decode task state (e.g. corrupt data in the backend).

Backend(String)

Backend error (e.g. connection failure, transient storage error).

Trait Implementations

impl Debug for TaskStoreError

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

Formats the value using the given formatter.

impl Display for TaskStoreError

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

Formats the value using the given formatter.

impl Error for TaskStoreError

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.