Enum FailoverPhase 

#[non_exhaustive]
pub enum FailoverPhase {
    Disconnected = 0,
    Retrying = 1,
    Reset = 2,
    GaveUp = 3,
}

Phase discriminant on FailoverProgressEvent.

The same callback fires for every phase of a mid-query failover — from the moment the cursor’s connection dies through to either a successful reconnect or an exhausted retry budget. Operators can route on the phase to feed SLO dashboards (“disconnected for N seconds” alerts), per-attempt retry telemetry, or a one-shot “gave up” notifier.

Marked #[non_exhaustive] so we can add phases (e.g. a hypothetical Cancelled for cancel-during-failover races) without breaking downstream matches.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Disconnected = 0

The cursor’s connection just died. Fires once, before the retry loop runs.

Retrying = 1

A reconnect dial is about to be attempted. Fires once per outer-loop iteration of the retry walk, after the inter- attempt backoff sleep has elapsed.

Reset = 2

A reconnect succeeded; replayed batches will start arriving on the new connection. Fires immediately before the ReaderQuery::on_failover_reset callback (when both are installed) so a single sink sees the entire lifecycle.

GaveUp = 3

The retry budget is exhausted. The cursor is terminal; the error returned to the caller is in FailoverProgressEvent::final_error.

Trait Implementations

impl Clone for FailoverPhase

fn clone(&self) -> FailoverPhase

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for FailoverPhase

impl Debug for FailoverPhase

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

Formats the value using the given formatter.

impl Eq for FailoverPhase

impl Hash for FailoverPhase

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for FailoverPhase

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for FailoverPhase