pub struct ReclockOperator<FromTime: Timestamp, IntoTime: Timestamp + Lattice, Handle: RemapHandle<FromTime = FromTime, IntoTime = IntoTime>> {
upper: Antichain<IntoTime>,
source_upper: MutableAntichain<FromTime>,
remap_handle: Handle,
}
Expand description
The ReclockOperator
is responsible for observing progress in the FromTime
domain and
consume messages from a ticker of progress in the IntoTime
domain. When the source frontier
advances and the ticker ticks the ReclockOperator
will generate the data that describe this
correspondence and write them out to its provided remap handle. The output generated by the
reclock operator can be thought of as Collection<G, FromTime>
where G::Timestamp
is
IntoTime
.
The ReclockOperator
will always maintain the invariant that for any time IntoTime
the remap
collection accumulates into an Antichain where each FromTime
timestamp has frequency 1
. In
other words the remap collection describes a well formed Antichain<FromTime>
as it is
marching forwards.
Fields§
§upper: Antichain<IntoTime>
Upper frontier of the partial remap trace
source_upper: MutableAntichain<FromTime>
The upper frontier in terms of FromTime
. Any attempt to reclock messages beyond this
frontier will lead to minting new bindings.
remap_handle: Handle
A handle allowing this operator to publish updates to and read back from the remap collection
Implementations§
Source§impl<FromTime, IntoTime, Handle> ReclockOperator<FromTime, IntoTime, Handle>where
FromTime: Timestamp,
IntoTime: Timestamp + Lattice,
Handle: RemapHandle<FromTime = FromTime, IntoTime = IntoTime>,
impl<FromTime, IntoTime, Handle> ReclockOperator<FromTime, IntoTime, Handle>where
FromTime: Timestamp,
IntoTime: Timestamp + Lattice,
Handle: RemapHandle<FromTime = FromTime, IntoTime = IntoTime>,
Sourcepub async fn new(
remap_handle: Handle,
) -> (Self, ReclockBatch<FromTime, IntoTime>)
pub async fn new( remap_handle: Handle, ) -> (Self, ReclockBatch<FromTime, IntoTime>)
Construct a new ReclockOperator from the given collection metadata
Sourceasync fn sync(
&mut self,
target_upper: AntichainRef<'_, IntoTime>,
) -> ReclockBatch<FromTime, IntoTime>
async fn sync( &mut self, target_upper: AntichainRef<'_, IntoTime>, ) -> ReclockBatch<FromTime, IntoTime>
Syncs the state of this operator to match that of the persist shard until the provided frontier
pub async fn mint( &mut self, binding_ts: IntoTime, new_into_upper: Antichain<IntoTime>, new_from_upper: AntichainRef<'_, FromTime>, ) -> ReclockBatch<FromTime, IntoTime>
Sourceasync fn append_batch(
&mut self,
updates: Vec<(FromTime, IntoTime, Diff)>,
new_upper: &Antichain<IntoTime>,
) -> Result<ReclockBatch<FromTime, IntoTime>, UpperMismatch<IntoTime>>
async fn append_batch( &mut self, updates: Vec<(FromTime, IntoTime, Diff)>, new_upper: &Antichain<IntoTime>, ) -> Result<ReclockBatch<FromTime, IntoTime>, UpperMismatch<IntoTime>>
Appends the provided updates to the remap collection at the next available minting IntoTime and updates this operator’s in-memory state accordingly.
If an attempt to mint bindings fails due to another process having raced and appended bindings concurrently then the current global upper will be returned as an error. This is the frontier that this operator must be synced to for a future append attempt to have any chance of success.
Trait Implementations§
Auto Trait Implementations§
impl<FromTime, IntoTime, Handle> Freeze for ReclockOperator<FromTime, IntoTime, Handle>
impl<FromTime, IntoTime, Handle> RefUnwindSafe for ReclockOperator<FromTime, IntoTime, Handle>
impl<FromTime, IntoTime, Handle> Send for ReclockOperator<FromTime, IntoTime, Handle>where
Handle: Send,
impl<FromTime, IntoTime, Handle> Sync for ReclockOperator<FromTime, IntoTime, Handle>
impl<FromTime, IntoTime, Handle> Unpin for ReclockOperator<FromTime, IntoTime, Handle>
impl<FromTime, IntoTime, Handle> UnwindSafe for ReclockOperator<FromTime, IntoTime, Handle>where
Handle: UnwindSafe,
FromTime: UnwindSafe + RefUnwindSafe,
IntoTime: RefUnwindSafe + UnwindSafe,
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