Enum ServiceError 

pub enum ServiceError {
    PreStartFailed(Arc<Error>),
    OnStartFailed(Arc<Error>),
    RunFailed(Arc<Error>),
    OnStopFailed(Arc<Error>),
    ShutdownDeadlineExceeded {
        deadline: Duration,
        pending: usize,
    },
    AlreadyRunning,
    AlreadyStopped,
}

All failure modes of a running Service.

Variants

PreStartFailed(Arc<Error>)

The node’s pre_start hook returned an error.

No other lifecycle hooks are invoked after this — typical causes are store open failures or journal replay errors.

OnStartFailed(Arc<Error>)

The node’s on_start hook returned an error.

post_stop is still invoked so resources opened in pre_start have a chance to close.

RunFailed(Arc<Error>)

The node’s run hook returned an error.

on_stop + post_stop are still invoked. The exit status’s reason is ExitReason::RunError.

OnStopFailed(Arc<Error>)

The node’s on_stop OR post_stop hook returned an error.

Reported after run has returned; usually indicates a flush / close failure.

ShutdownDeadlineExceeded

One or more tracked tasks did not exit within the shutdown deadline.

The service aborts the laggards; this error is reported so operators can see that shutdown was not fully graceful.

Fields

deadline: Duration

The deadline that was exceeded.

pending: usize

How many tasks were still alive when the deadline fired.

AlreadyRunning

start() was called on a Service that has already run.

A Service is single-shot — once started, build a new one.

AlreadyStopped

start() was called on a Service that has already stopped.

Reserved for future re-entry protections; currently unreachable.

Trait Implementations

impl Clone for ServiceError

fn clone(&self) -> ServiceError

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ServiceError

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

Formats the value using the given formatter.

impl Display for ServiceError

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

Formats the value using the given formatter.

impl Error for ServiceError

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.