class DbCursorPreheadStore[Counter <: Long] extends CursorPreheadStore[Counter] with DbStore
DB storage for a cursor prehead for a domain
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Instance Constructors
- new DbCursorPreheadStore(client: SequencerClientDiscriminator, storage: DbStorage, cursorTable: String, processingTime: GaugeM[TimedLoadGauge, Double], timeouts: ProcessingTimeout, loggerFactory: NamedLoggerFactory)(implicit arg0: GetResult[Counter], ec: ExecutionContext)
- cursorTable
The table name to store the cursor prehead. The table must define the following columns:
- client varchar not null primary key
- prehead_counter bigint not null
- ts bigint not null
- processingTime
The metric to be used for DB queries
Value Members
- final def !=(arg0: Any): Boolean
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- def advancePreheadTo(newPrehead: CursorPrehead[Counter])(implicit traceContext: TraceContext): Future[Unit]
Sets the prehead counter to
newPreheadunless it is already at the same or a higher value.Sets the prehead counter to
newPreheadunless it is already at the same or a higher value. The prehead counter should be set to the counter before the head of the corresponding cursor.- Definition Classes
- CursorPreheadStore
- def advancePreheadToTransactionalStoreUpdate(newPrehead: CursorPrehead[Counter])(implicit traceContext: TraceContext): TransactionalStoreUpdate
advancePreheadTo as a com.digitalasset.canton.resource.TransactionalStoreUpdate
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Blocks until all earlier tasks have completed and then prevents further tasks from being run.
Blocks until all earlier tasks have completed and then prevents further tasks from being run.
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- def closingTimeout: FiniteDuration
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- def internalPerformUnlessClosingF[A](f: => Future[A])(implicit ec: ExecutionContext, traceContext: TraceContext): UnlessShutdown[Future[A]]
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- def isClosing: Boolean
Check whether we're closing.
Check whether we're closing. Susceptible to race conditions; unless you're using using this as a flag to the retry lib or you really know what you're doing, prefer performUnlessClosing and friends.
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- def keepTrackOfOpenFutures: Boolean
track running futures on shutdown
track running futures on shutdown
set to true to get detailed information about all futures that did not complete during shutdown. if set to false, we don't do anything.
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- def logger: TracedLogger
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- val loggerFactory: NamedLoggerFactory
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- DbCursorPreheadStore → NamedLogging
- implicit def loggingContext(implicit traceContext: TraceContext): ErrorLoggingContext
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- def onClosed(): Unit
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- def performUnlessClosing[A](f: => A)(implicit traceContext: TraceContext): UnlessShutdown[A]
Performs the task given by
funless a shutdown has been initiated.Performs the task given by
funless a shutdown has been initiated. The shutdown will only begin afterfcompletes, but other tasks may execute concurrently withf, if started using this function, or one of the other variants (performUnlessClosingF and performUnlessClosingEitherT). The tasks are assumed to take less than closingTimeout to complete.- f
The task to perform
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scala.None$ if a shutdown has been initiated. Otherwise the result of the task.
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- def performUnlessClosingEitherT[E, R](onClosing: => E)(etf: => EitherT[Future, E, R])(implicit ec: ExecutionContext, traceContext: TraceContext): EitherT[Future, E, R]
Performs the EitherT[Future] given by
etfunless a shutdown has been initiated, in which case the provided error is returned instead.Performs the EitherT[Future] given by
etfunless a shutdown has been initiated, in which case the provided error is returned instead. Bothetfand the error are lazy;etfis only evaluated if there is no shutdown, the error only if we're shutting down. The shutdown will only begin afteretfcompletes, but other tasks may execute concurrently withetf, if started using this function, or one of the other variants (performUnlessClosing and performUnlessClosingF). The tasks are assumed to take less than closingTimeout to complete.- etf
The task to perform
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- def performUnlessClosingEitherTF[E, R](onClosing: => E)(etf: => EitherT[Future, E, Future[R]])(implicit ec: ExecutionContext, traceContext: TraceContext): EitherT[Future, E, Future[R]]
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- def performUnlessClosingF[A](f: => Future[A])(implicit ec: ExecutionContext, traceContext: TraceContext): FutureUnlessShutdown[A]
Performs the Future given by
funless a shutdown has been initiated.Performs the Future given by
funless a shutdown has been initiated. The future is lazy and not evaluated during shutdown. The shutdown will only begin afterfcompletes, but other tasks may execute concurrently withf, if started using this function, or one of the other variants (performUnlessClosing and performUnlessClosingEitherT). The tasks are assumed to take less than closingTimeout to complete.- f
The task to perform
- returns
The future completes with com.digitalasset.canton.lifecycle.UnlessShutdown.AbortedDueToShutdown if a shutdown has been initiated. Otherwise the result of the task wrapped in com.digitalasset.canton.lifecycle.UnlessShutdown.Outcome.
- Definition Classes
- FlagCloseable
- def prehead(implicit traceContext: TraceContext): Future[Option[CursorPrehead[Counter]]]
Gets the prehead of the cursor.
Gets the prehead of the cursor.
- Definition Classes
- DbCursorPreheadStore → CursorPreheadStore
- Annotations
- @nowarn()
- def rewindPreheadTo(newPreheadO: Option[CursorPrehead[Counter]])(implicit traceContext: TraceContext): Future[Unit]
Sets the prehead counter to
newPreheadOif it is currently set to a higher value.Sets the prehead counter to
newPreheadOif it is currently set to a higher value.- Definition Classes
- DbCursorPreheadStore → CursorPreheadStore
- def runOnShutdown[T](task: RunOnShutdown)(implicit traceContext: TraceContext): Unit
Register a task that will run onClose after all "performUnlessShutdown" tasks have finished
Register a task that will run onClose after all "performUnlessShutdown" tasks have finished
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- def runStateChanged(waitingState: Boolean = false): Unit
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- def sleepMillis: Long
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- val storage: DbStorage
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- DbCursorPreheadStore → DbStore
- final def synchronized[T0](arg0: => T0): T0
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- val timeouts: ProcessingTimeout
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- DbCursorPreheadStore → FlagCloseable
- def toString(): String
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- final def wait(arg0: Long, arg1: Int): Unit
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