Enum HandlerError 

pub enum HandlerError {
    Rendering(String),
    Invariant(String),
    MissingFragment(String),
    MissingData(String),
    TypeError(String),
    Protocol(ProtocolError),
    Evaluation(String),
    Io(Error),
    Writer(String),
    PluginData(String),
    ClientDisconnected,
    StreamTimeout,
}

Error types for the WebUI handler.

Variants

Rendering(String)

Invariant(String)

MissingFragment(String)

MissingData(String)

TypeError(String)

Protocol(ProtocolError)

Evaluation(String)

Io(Error)

Writer(String)

PluginData(String)

ClientDisconnected

The HTTP client disconnected before the render completed.

Streaming ResponseWriter implementations return this from write() once their channel/socket is closed, so the handler can abort the render rather than do CPU work that has nowhere to go. Allocation-free (the variant carries no payload).

StreamTimeout

The streaming writer’s flush exceeded its configured deadline.

Indicates a slow/unresponsive consumer (slow-loris client, stuck proxy, etc.). The render thread is freed; downstream telemetry should distinguish this from ClientDisconnected so ops can alert on slow-client attacks.

Trait Implementations

impl Debug for HandlerError

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

Formats the value using the given formatter.

impl Display for HandlerError

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

Formats the value using the given formatter.

impl Error for HandlerError

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<Error> for HandlerError

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<ProtocolError> for HandlerError

fn from(source: ProtocolError) -> Self

Converts to this type from the input type.