Enum ReadAtError 

pub enum ReadAtError {
    Expired {
        requested_epoch: u64,
        readable_from_epoch: u64,
    },
    NotYetReadable {
        requested_epoch: u64,
        readable_through_epoch: u64,
    },
    Unavailable {
        requested_epoch: u64,
        reason: String,
    },
}

Classified failure to open a fenced storage snapshot.

Variants

Expired

The requested epoch was compacted before a session could open.

Fields

requested_epoch: u64

Requested cluster data epoch.

readable_from_epoch: u64

Oldest retained data epoch.

NotYetReadable

The requested epoch has not been applied by the backend.

Fields

requested_epoch: u64

Requested cluster data epoch.

readable_through_epoch: u64

Newest locally readable data epoch.

Unavailable

The backend has no admissible read-at implementation.

Fields

requested_epoch: u64

Requested cluster data epoch.

reason: String

Stable reason for ineligibility.

Trait Implementations

impl Clone for ReadAtError

fn clone(&self) -> ReadAtError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ReadAtError

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

Formats the value using the given formatter.

impl Display for ReadAtError

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

Formats the value using the given formatter.

impl Eq for ReadAtError

impl Error for ReadAtError

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 PartialEq for ReadAtError

fn eq(&self, other: &ReadAtError) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for ReadAtError