class LocalSequencerStateEventSignaller extends EventSignaller with FlagCloseableAsync with NamedLogging
If all Sequencer writes are occurring locally we pipe write notifications to read subscriptions allowing the SequencerReader to immediately read from the backing store rather than polling.
An important caveat is that we only supply signals when a write for a member occurs. If there are no writes from starting the process the member will never receive a read signal. The SequencerReader is responsible for performing at least one initial read from the store to ensure that all prior events are served as required.
Not suitable or at least very sub-optimal for a horizontally scaled sequencer setup where a reader will not have visibility of all writes locally.
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- new LocalSequencerStateEventSignaller(timeouts: ProcessingTimeout, loggerFactory: NamedLoggerFactory)(implicit materializer: Materializer, executionContext: ExecutionContext)
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- final def !=(arg0: Any): Boolean
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- final def close(): Unit
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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- FlagCloseable → AutoCloseable
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- @SuppressWarnings()
- def closeAsync(): Seq[AsyncOrSyncCloseable]
closeAsync asynchronously releases resources held by a future
closeAsync asynchronously releases resources held by a future
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an ordered sequence of async and sync closeables with async closeables made up of future and timeout
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- LocalSequencerStateEventSignaller → FlagCloseableAsync
- def closingTimeout: FiniteDuration
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- final def eq(arg0: AnyRef): Boolean
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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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- final def isInstanceOf[T0]: Boolean
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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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- LocalSequencerStateEventSignaller → NamedLogging
- implicit def loggingContext(implicit traceContext: TraceContext): ErrorLoggingContext
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- NamedLogging
- final def ne(arg0: AnyRef): Boolean
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- def noTracingLogger: Logger
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- final def notify(): Unit
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- final def notifyAll(): Unit
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- def notifyOfLocalWrite(notification: WriteNotification)(implicit traceContext: TraceContext): Future[Unit]
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- LocalSequencerStateEventSignaller → EventSignaller
- final def onClosed(): Unit
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- FlagCloseableAsync → FlagCloseable
- 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
- returns
scala.None$ if a shutdown has been initiated. Otherwise the result of the task.
- Definition Classes
- FlagCloseable
- 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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- FlagCloseable
- 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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- FlagCloseable
- 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 readSignalsForMember(member: Member, memberId: SequencerMemberId): Source[ReadSignal, NotUsed]
- Definition Classes
- LocalSequencerStateEventSignaller → EventSignaller
- 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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- @VisibleForTesting()
- def sleepMillis: Long
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- final def synchronized[T0](arg0: => T0): T0
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- val timeouts: ProcessingTimeout
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- protected
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- LocalSequencerStateEventSignaller → FlagCloseable
- def toString(): String
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- final def wait(arg0: Long, arg1: Int): Unit
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- @throws(classOf[java.lang.InterruptedException])
- final def wait(arg0: Long): Unit
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- final def wait(): Unit
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- @throws(classOf[java.lang.InterruptedException])