Enum NodeAppError 

pub enum NodeAppError {
    InitFailed(String),
    RequestFailed(String),
    EventFailed(String),
    ShutdownFailed(String),
    SerializationError(Error),
    CapabilityError(String),
}

Error type returned by app operations.

Variants surface specific failure modes from each lifecycle hook plus transport-level errors (serialization, capability dispatch). The #[from] serde_json::Error impl on NodeAppError::SerializationError allows the ? operator to propagate JSON errors directly.

Variants

InitFailed(String)

Returned from NodeApp::init when initialization failed.

RequestFailed(String)

Returned from NodeApp::handle_request when handling failed.

EventFailed(String)

Returned from NodeApp::handle_event or publish_event.

ShutdownFailed(String)

Returned from NodeApp::shutdown when graceful shutdown failed.

SerializationError(Error)

JSON (de)serialization error — auto-converted from serde_json::Error via the ? operator.

CapabilityError(String)

Returned from NodeApp::handle_capability or invoke_capability.

Trait Implementations

impl Debug for NodeAppError

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

Formats the value using the given formatter.

impl Display for NodeAppError

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

Formats the value using the given formatter.

impl Error for NodeAppError

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 NodeAppError

fn from(source: Error) -> Self

Converts to this type from the input type.