Enum WalFlushStepOutcome 

pub enum WalFlushStepOutcome {
    NotNeeded,
    Flushed {
        manifest_head_seq: ChangeSeq,
    },
    Superseded {
        attempted_seq: ChangeSeq,
        current_manifest_id: ManifestId,
    },
    RaceLost {
        observed_head_seq: ChangeSeq,
    },
}

What the WAL-flush part of a maintenance step did.

Variants

NotNeeded

The step did not run this sub-step: the tail was below the threshold, or only selected something else.

Flushed

The step flushed the WAL tail and advanced the metadata root.

Fields

manifest_head_seq: ChangeSeq

Sequence covered by the published manifest.

Superseded

The root already covered the attempted sequence — another publisher got there first.

Fields

attempted_seq: ChangeSeq

Sequence this step attempted to flush through.

current_manifest_id: ManifestId

Manifest the root currently references.

RaceLost

A concurrent head update won the race.

Fields

observed_head_seq: ChangeSeq

Head sequence observed before the advance attempt.

Trait Implementations

impl Clone for WalFlushStepOutcome

fn clone(&self) -> WalFlushStepOutcome

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for WalFlushStepOutcome

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for WalFlushStepOutcome

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for WalFlushStepOutcome

impl PartialEq for WalFlushStepOutcome

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for WalFlushStepOutcome

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for WalFlushStepOutcome