Enum DispatchError 

pub enum DispatchError {
    UnknownProcedure(String),
    Deserialize(Error),
    Serialize(Error),
    RawBody,
    MissingInjection(&'static str),
    MissingState(&'static str),
    MissingChannel(&'static str),
    Invalid(ValidationError),
}

Error returned by a generated dispatch when a call cannot reach or leave the procedure. Wire-level failures only – a procedure’s own failures belong in its return type.

Variants

UnknownProcedure(String)

No procedure with the requested name exists in this set.

Deserialize(Error)

The arguments failed to deserialize into the procedure’s parameter types.

Serialize(Error)

The procedure’s return value failed to serialize.

RawBody

The invoke arrived with a raw byte body; procedures take JSON named arguments.

MissingInjection(&'static str)

A parameter is injected by type, but the call’s [Context] offered no value of that type.

MissingState(&'static str)

A State<T> parameter was requested, but no value of that type is managed – the app never called .manage() for it.

MissingChannel(&'static str)

A Channel<T> parameter was requested, but the dispatch [Context] carried no channel factory. The handler always installs one from the webview, so this arises only when dispatching against a bare [Context] (no with_channels).

Invalid(ValidationError)

The payload failed runtime validation against the command’s schema. Only produced by handler_validated, under the validate feature; rejected at the boundary, before the procedure runs.

Trait Implementations

impl Debug for DispatchError

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

Formats the value using the given formatter.

impl Display for DispatchError

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

Formats the value using the given formatter.

impl Error for DispatchError

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.

impl From<ValidationError> for DispatchError

fn from(source: ValidationError) -> Self

Converts to this type from the input type.