Enum RemoteLogSegmentState 

pub enum RemoteLogSegmentState {
    CopySegmentStarted,
    CopySegmentFinished,
    DeleteSegmentStarted,
    DeleteSegmentFinished,
}

Lifecycle state of a remote log segment.

Valid transitions (see RemoteLogSegmentState::is_valid_transition):

CopySegmentStarted ──► CopySegmentFinished ──► DeleteSegmentStarted ──► DeleteSegmentFinished
        └───────────────────────────────────►┘

Variants

CopySegmentStarted

A copy to the remote tier has begun but not finished. The starting state of every segment.

CopySegmentFinished

The copy finished; the segment is durable in the remote tier and readable.

DeleteSegmentStarted

Deletion from the remote tier has begun.

DeleteSegmentFinished

The segment has been fully removed from the remote tier.

Implementations

impl RemoteLogSegmentState

pub fn is_valid_transition(self, target: Self) -> bool

true if a segment currently in self may transition to target.

A same-state “transition” is not valid (callers treat it as a no-op / duplicate, not an advance).

Trait Implementations

impl Clone for RemoteLogSegmentState

fn clone(&self) -> RemoteLogSegmentState

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for RemoteLogSegmentState

impl Debug for RemoteLogSegmentState

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

Formats the value using the given formatter.

impl Eq for RemoteLogSegmentState

impl Hash for RemoteLogSegmentState

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 RemoteLogSegmentState

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for RemoteLogSegmentState