Enum SourceError 

pub enum SourceError {
    PositionUnavailable {
        source_id: String,
        requested: u64,
        earliest_available: Option<u64>,
    },
}

Structured error type for source operations (e.g., replay position unavailable) Structured error type for source operations.

Sources return these errors (via anyhow::Error) from trait methods like subscribe(). The orchestration layer can downcast to check for specific error variants:

if let Some(source_err) = err.downcast_ref::<SourceError>() {
    match source_err {
        SourceError::PositionUnavailable { .. } => { /* handle */ }
    }
}

Variants

PositionUnavailable

The requested resume position is no longer available. The caller should consult its recovery_policy to decide next steps.

Fields

source_id: String

requested: u64

earliest_available: Option<u64>

Trait Implementations

impl Debug for SourceError

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

Formats the value using the given formatter.

impl Display for SourceError

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

Formats the value using the given formatter.

impl Error for SourceError

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.