pub struct LeaderLeaseStore { /* private fields */ }Expand description
I/O wrapper for LeaderLease on an object store.
Implementations§
Source§impl LeaderLeaseStore
impl LeaderLeaseStore
Sourcepub fn new(store: Arc<dyn ObjectStore>, ttl_ms: i64) -> Self
pub fn new(store: Arc<dyn ObjectStore>, ttl_ms: i64) -> Self
Wrap a pre-constructed object store with the given lease TTL.
Sourcepub async fn load(&self) -> Result<Option<LeaderLease>, LeaseError>
pub async fn load(&self) -> Result<Option<LeaderLease>, LeaseError>
Load the current (highest-seq) lease; Ok(None) if none exists.
§Errors
Object-store I/O or JSON decode failure.
Sourcepub async fn load_seq(
&self,
seq: u64,
) -> Result<Option<LeaderLease>, LeaseError>
pub async fn load_seq( &self, seq: u64, ) -> Result<Option<LeaderLease>, LeaseError>
Load a specific sequence’s lease. Ok(None) if it was never
written.
§Errors
Object-store I/O or JSON decode failure.
Sourcepub async fn try_acquire(
&self,
me: NodeId,
now_ms: i64,
) -> Result<LeaseOutcome, LeaseError>
pub async fn try_acquire( &self, me: NodeId, now_ms: i64, ) -> Result<LeaseOutcome, LeaseError>
Attempt to acquire or renew the lease for me as of now_ms.
Takes now_ms explicitly so the decision stays deterministic and
unit-testable; the renewal manager supplies wall-clock time.
§Errors
Object-store I/O or JSON encode failure.
Trait Implementations§
Auto Trait Implementations§
impl !RefUnwindSafe for LeaderLeaseStore
impl !UnwindSafe for LeaderLeaseStore
impl Freeze for LeaderLeaseStore
impl Send for LeaderLeaseStore
impl Sync for LeaderLeaseStore
impl Unpin for LeaderLeaseStore
impl UnsafeUnpin for LeaderLeaseStore
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