Struct mz_persist_txn::txn_read::DataSnapshot
source · pub struct DataSnapshot<T> { /* private fields */ }
Expand description
A token exchangeable for a data shard snapshot.
- Invariant:
latest_write <= as_of < empty_to
- Invariant:
(latest_write, empty_to)
and(as_of, empty_to)
have no unapplied writes (which means we can do an empty CaA of those times if we like).
Implementations§
source§impl<T: Timestamp + Lattice + TotalOrder + Codec64> DataSnapshot<T>
impl<T: Timestamp + Lattice + TotalOrder + Codec64> DataSnapshot<T>
sourcepub async fn snapshot_and_fetch<K, V, D>(
&self,
data_read: &mut ReadHandle<K, V, T, D>
) -> Result<Vec<((Result<K, String>, Result<V, String>), T, D)>, Since<T>>
pub async fn snapshot_and_fetch<K, V, D>( &self, data_read: &mut ReadHandle<K, V, T, D> ) -> Result<Vec<((Result<K, String>, Result<V, String>), T, D)>, Since<T>>
sourcepub async fn snapshot_cursor<K, V, D>(
&self,
data_read: &mut ReadHandle<K, V, T, D>,
should_fetch_part: impl for<'a> Fn(Option<&'a LazyPartStats>) -> bool
) -> Result<Cursor<K, V, T, D>, Since<T>>
pub async fn snapshot_cursor<K, V, D>( &self, data_read: &mut ReadHandle<K, V, T, D>, should_fetch_part: impl for<'a> Fn(Option<&'a LazyPartStats>) -> bool ) -> Result<Cursor<K, V, T, D>, Since<T>>
sourcepub async fn snapshot_and_stream<K, V, D>(
&self,
data_read: &mut ReadHandle<K, V, T, D>
) -> Result<impl Stream<Item = ((Result<K, String>, Result<V, String>), T, D)>, Since<T>>
pub async fn snapshot_and_stream<K, V, D>( &self, data_read: &mut ReadHandle<K, V, T, D> ) -> Result<impl Stream<Item = ((Result<K, String>, Result<V, String>), T, D)>, Since<T>>
sourcepub fn snapshot_stats<K, V, D, O>(
&self,
data_since: &SinceHandle<K, V, T, D, O>
) -> impl Future<Output = Result<SnapshotStats, Since<T>>> + Send + 'static
pub fn snapshot_stats<K, V, D, O>( &self, data_since: &SinceHandle<K, V, T, D, O> ) -> impl Future<Output = Result<SnapshotStats, Since<T>>> + Send + 'static
sourcepub async fn snapshot_parts_stats<K, V, D>(
&self,
data_read: &mut ReadHandle<K, V, T, D>
) -> Result<SnapshotPartsStats, Since<T>>
pub async fn snapshot_parts_stats<K, V, D>( &self, data_read: &mut ReadHandle<K, V, T, D> ) -> Result<SnapshotPartsStats, Since<T>>
Trait Implementations§
Auto Trait Implementations§
impl<T> Freeze for DataSnapshot<T>where
T: Freeze,
impl<T> RefUnwindSafe for DataSnapshot<T>where
T: RefUnwindSafe,
impl<T> Send for DataSnapshot<T>where
T: Send,
impl<T> Sync for DataSnapshot<T>where
T: Sync,
impl<T> Unpin for DataSnapshot<T>where
T: Unpin,
impl<T> UnwindSafe for DataSnapshot<T>where
T: UnwindSafe,
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
source§impl<R, O, T> CopyOnto<ConsecutiveOffsetPairs<R, O>> for T
impl<R, O, T> CopyOnto<ConsecutiveOffsetPairs<R, O>> for T
source§fn copy_onto(
self,
target: &mut ConsecutiveOffsetPairs<R, O>
) -> <ConsecutiveOffsetPairs<R, O> as Region>::Index
fn copy_onto( self, target: &mut ConsecutiveOffsetPairs<R, O> ) -> <ConsecutiveOffsetPairs<R, O> as Region>::Index
Copy self into the target container, returning an index that allows to
look up the corresponding read item.
source§impl<T> FutureExt for T
impl<T> FutureExt for T
source§fn with_context(self, otel_cx: Context) -> WithContext<Self>
fn with_context(self, otel_cx: Context) -> WithContext<Self>
source§fn with_current_context(self) -> WithContext<Self>
fn with_current_context(self) -> WithContext<Self>
source§impl<T> Instrument for T
impl<T> Instrument for T
source§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
source§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
source§impl<T> IntoRequest<T> for T
impl<T> IntoRequest<T> for T
source§fn into_request(self) -> Request<T>
fn into_request(self) -> Request<T>
Wrap the input message
T
in a tonic::Request
Creates a shared type from an unshared type.
source§impl<T> Pointable for T
impl<T> Pointable for T
source§impl<P, R> ProtoType<R> for Pwhere
R: RustType<P>,
impl<P, R> ProtoType<R> for Pwhere
R: RustType<P>,
source§fn into_rust(self) -> Result<R, TryFromProtoError>
fn into_rust(self) -> Result<R, TryFromProtoError>
See
RustType::from_proto
.source§fn from_rust(rust: &R) -> P
fn from_rust(rust: &R) -> P
See
RustType::into_proto
.