class SynchronizerTimeTracker extends NamedLogging with FlagCloseable with HasFlushFuture

Provides a variety of methods for tracking time on the synchronizer.

  • fetchTime and fetchTimeProof allows for proactively asking for a recent time or time proof.
  • requestTick asks the tracker to ensure that an event is witnessed for the given time or greater (useful for timeouts).
  • awaitTick will return a future to wait for the given time being reached on the target synchronizer.

We currently assume that the synchronizer and our host are roughly synchronized and typically won't expect to see a time on a synchronizer until we have passed that point on our local clock. We then wait for observationLatency past the timestamp we are expecting to elapse on our local clock as transmission of an event with that timestamp will still take some time to arrive at our host. This avoids frequently asking for times before we've reached the timestamps we're looking for locally.

We also take into account a patienceDuration that will cause us to defer asking for a time if we have recently seen events for the synchronizer. This is particularly useful if we are significantly behind and reading many old events from the synchronizer.

If no activity is happening on the synchronizer we will try to ensure that we have observed an event at least once during the minObservationDuration.

Linear Supertypes
HasFlushFuture, FlagCloseable, PerformUnlessClosing, HasSynchronizeWithReaders, OnShutdownRunner, HasRunOnClosing, HasUnlessClosing, AutoCloseable, NamedLogging, AnyRef, Any
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Inherited
  1. SynchronizerTimeTracker
  2. HasFlushFuture
  3. FlagCloseable
  4. PerformUnlessClosing
  5. HasSynchronizeWithReaders
  6. OnShutdownRunner
  7. HasRunOnClosing
  8. HasUnlessClosing
  9. AutoCloseable
  10. NamedLogging
  11. AnyRef
  12. Any
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Visibility
  1. Public
  2. Protected

Instance Constructors

  1. new SynchronizerTimeTracker(config: SynchronizerTimeTrackerConfig, clock: Clock, timeRequestSubmitter: TimeProofRequestSubmitter, timeouts: ProcessingTimeout, loggerFactory: NamedLoggerFactory)(implicit executionContext: ExecutionContext)

Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  2. final def ##: Int
    Definition Classes
    AnyRef → Any
  3. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  4. def addReader(reader: String)(implicit traceContext: TraceContext): UnlessShutdown[ReaderHandle]

    TODO(#16601) Make this method private once PerformUnlessClosing doesn't need it any more

    TODO(#16601) Make this method private once PerformUnlessClosing doesn't need it any more

    Attributes
    protected[this]
    Definition Classes
    HasSynchronizeWithReaders
  5. def addToFlushAndLogError(name: String)(future: Future[_])(implicit loggingContext: ErrorLoggingContext): Unit

    Adds the task future to the flush future so that doFlush completes only after future has completed.

    Adds the task future to the flush future so that doFlush completes only after future has completed. Logs an error if the future fails with an exception.

    Attributes
    protected
    Definition Classes
    HasFlushFuture
  6. def addToFlushAndLogErrorUS(name: String)(future: FutureUnlessShutdown[_])(implicit loggingContext: ErrorLoggingContext): Unit
    Attributes
    protected
    Definition Classes
    HasFlushFuture
  7. def addToFlushWithoutLogging(name: String)(future: Future[_]): Unit

    Adds the task future to the flush future so that doFlush completes only after future has completed.

    Adds the task future to the flush future so that doFlush completes only after future has completed. The caller is responsible for logging any exceptions thrown inside the future.

    Attributes
    protected
    Definition Classes
    HasFlushFuture
  8. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  9. def awaitTick(ts: CantonTimestamp)(implicit traceContext: TraceContext): Option[Future[Unit]]

    Waits for an event with a timestamp greater or equal to ts to be observed from the synchronizer.

    Waits for an event with a timestamp greater or equal to ts to be observed from the synchronizer. If we have already witnessed an event with a timestamp equal or exceeding the given ts then None will be returned.

  10. def clone(): AnyRef
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.CloneNotSupportedException]) @IntrinsicCandidate() @native()
  11. 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.

    Definition Classes
    FlagCloseable → OnShutdownRunner → AutoCloseable
  12. def closingTimeout: FiniteDuration
    Attributes
    protected
    Definition Classes
    FlagCloseable → PerformUnlessClosing
  13. val config: SynchronizerTimeTrackerConfig
  14. def doFlush(): Future[Unit]

    Returns a future that completes after all added futures have completed.

    Returns a future that completes after all added futures have completed. The returned future never fails.

    Attributes
    protected
    Definition Classes
    HasFlushFuture
  15. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  16. def equals(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef → Any
  17. implicit def errorLoggingContext(implicit traceContext: TraceContext): ErrorLoggingContext
    Attributes
    protected
    Definition Classes
    NamedLogging
  18. def fetchTime(freshnessBound: NonNegativeFiniteDuration = NonNegativeFiniteDuration.Zero)(implicit traceContext: TraceContext): FutureUnlessShutdown[CantonTimestamp]

    Fetches a recent synchronizer timestamp.

    Fetches a recent synchronizer timestamp. If the latest received event has been received within the given freshnessBound (measured on the participant clock) this synchronizer timestamp will be immediately returned. If a sufficiently fresh timestamp is unavailable then a request for a time proof will be made, however the returned future will be resolved by the first event after this call (which may not necessarily be the response to our time proof request).

    returns

    The future completes with the synchronizer's timestamp of the event. So if the participant's local clock is ahead of the synchronizer clock, the timestamp may be earlier than now minus the freshness bound.

  19. def fetchTimeProof(freshnessBound: NonNegativeFiniteDuration = NonNegativeFiniteDuration.Zero)(implicit traceContext: TraceContext): FutureUnlessShutdown[TimeProof]

    Similar to fetchTime but will only return time proof.

  20. def flow[F[_], Env <: Envelope[_]](implicit F: Foldable[F]): Flow[F[BoxedEnvelope[OrdinaryEnvelopeBox, Env]], F[BoxedEnvelope[OrdinaryEnvelopeBox, Env]], NotUsed]
  21. def flush(): Future[Unit]
    Attributes
    protected[time]
    Annotations
    @VisibleForTesting()
  22. def flushCloseable(name: String, timeout: NonNegativeDuration): SyncCloseable
    Attributes
    protected
    Definition Classes
    HasFlushFuture
  23. final def getClass(): Class[_ <: AnyRef]
    Definition Classes
    AnyRef → Any
    Annotations
    @IntrinsicCandidate() @native()
  24. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @IntrinsicCandidate() @native()
  25. def isClosing: Boolean

    Check whether we're closing.

    Check whether we're closing. Susceptible to race conditions; unless you're using this as a flag to the retry lib or you really know what you're doing, prefer performUnlessClosing and friends.

    Definition Classes
    OnShutdownRunner → HasUnlessClosing
  26. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  27. def keepTrackOfReaderCallStack: Boolean

    Set this to true to get detailed information about all futures that did not complete during shutdown.

    Set this to true to get detailed information about all futures that did not complete during shutdown.

    Attributes
    protected[this]
    Definition Classes
    PerformUnlessClosing → HasSynchronizeWithReaders
  28. def latestTime: Option[CantonTimestamp]

    Fetch the latest timestamp we have observed from the synchronizer.

    Fetch the latest timestamp we have observed from the synchronizer. Note this isn't restored on startup so will be empty until the first event after starting is seen.

  29. def logger: TracedLogger
    Attributes
    protected
    Definition Classes
    NamedLogging
  30. val loggerFactory: NamedLoggerFactory
    Attributes
    protected
    Definition Classes
    SynchronizerTimeTracker → NamedLogging
  31. def maxSleepMillis: Long

    How often to poll to check that all tasks have completed.

    How often to poll to check that all tasks have completed.

    Attributes
    protected
    Definition Classes
    PerformUnlessClosing
  32. def nameInternal: String
    Attributes
    protected[this]
    Definition Classes
    PerformUnlessClosing → HasSynchronizeWithReaders
  33. implicit def namedLoggingContext(implicit traceContext: TraceContext): NamedLoggingContext
    Attributes
    protected
    Definition Classes
    NamedLogging
  34. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  35. def noTracingLogger: Logger
    Attributes
    protected
    Definition Classes
    NamedLogging
  36. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @IntrinsicCandidate() @native()
  37. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @IntrinsicCandidate() @native()
  38. def onCloseFailure(e: Throwable): Unit
    Attributes
    protected
    Definition Classes
    PerformUnlessClosing
  39. def onClosed(): Unit
    Definition Classes
    SynchronizerTimeTracker → PerformUnlessClosing
  40. final def onFirstClose(): 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.

    Definition Classes
    PerformUnlessClosing → OnShutdownRunner
    Annotations
    @SuppressWarnings()
  41. def performUnlessClosing[A](name: String)(f: => A)(implicit traceContext: TraceContext): UnlessShutdown[A]

    Performs the task given by f unless a shutdown has been initiated.

    Performs the task given by f unless a shutdown has been initiated. The shutdown will only begin after f completes, but other tasks may execute concurrently with f, 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.

    DO NOT CALL this.close as part of f, because it will result in a deadlock. DO NOT PUT retries, especially indefinite ones, inside f.

    f

    The task to perform

    returns

    scala.None$ if a shutdown has been initiated. Otherwise the result of the task.

    Definition Classes
    PerformUnlessClosing
  42. def performUnlessClosingCheckedT[A, N, R](name: String, onClosing: => Checked[A, N, R])(etf: => CheckedT[Future, A, N, R])(implicit ec: ExecutionContext, traceContext: TraceContext): CheckedT[Future, A, N, R]
    Definition Classes
    PerformUnlessClosing
  43. def performUnlessClosingCheckedUST[A, N, R](name: String, onClosing: => Checked[A, N, R])(etf: => CheckedT[FutureUnlessShutdown, A, N, R])(implicit ec: ExecutionContext, traceContext: TraceContext): CheckedT[FutureUnlessShutdown, A, N, R]
    Definition Classes
    PerformUnlessClosing
  44. def performUnlessClosingEitherT[E, R](name: String, onClosing: => E)(etf: => EitherT[Future, E, R])(implicit ec: ExecutionContext, traceContext: TraceContext): EitherT[Future, E, R]

    Performs the EitherT[Future] given by etf unless a shutdown has been initiated, in which case the provided error is returned instead.

    Performs the EitherT[Future] given by etf unless a shutdown has been initiated, in which case the provided error is returned instead. Both etf and the error are lazy; etf is only evaluated if there is no shutdown, the error only if we're shutting down. The shutdown will only begin after etf completes, but other tasks may execute concurrently with etf, 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.

    DO NOT CALL this.close as part of etf, because it will result in a deadlock. DO NOT PUT retries, especially indefinite ones, inside f.

    etf

    The task to perform

    Definition Classes
    PerformUnlessClosing
  45. def performUnlessClosingEitherU[E, R](name: String)(etf: => EitherT[Future, E, R])(implicit ec: ExecutionContext, traceContext: TraceContext): EitherT[FutureUnlessShutdown, E, R]
    Definition Classes
    PerformUnlessClosing
  46. def performUnlessClosingEitherUSF[E, R](name: String)(etf: => EitherT[FutureUnlessShutdown, E, R])(implicit ec: ExecutionContext, traceContext: TraceContext): EitherT[FutureUnlessShutdown, E, R]
    Definition Classes
    PerformUnlessClosing
  47. def performUnlessClosingEitherUSFAsync[E, R](name: String)(etf: => EitherT[FutureUnlessShutdown, E, R])(asyncResultToWaitForF: (R) => FutureUnlessShutdown[_])(implicit ec: ExecutionContext, traceContext: TraceContext): EitherT[FutureUnlessShutdown, E, R]

    Use this method if closing/shutdown of the object should wait for asynchronous computation to finish too.

    Use this method if closing/shutdown of the object should wait for asynchronous computation to finish too.

    etf

    closing of this object will wait for all such spawned Futures to finish

    asyncResultToWaitForF

    closing of this object will wait also wait for all such asynchronous Futures to finish too

    returns

    the future spawned by etf

    Definition Classes
    PerformUnlessClosing
  48. def performUnlessClosingF[A](name: String)(f: => Future[A])(implicit ec: ExecutionContext, traceContext: TraceContext): FutureUnlessShutdown[A]

    Performs the Future given by f unless a shutdown has been initiated.

    Performs the Future given by f unless a shutdown has been initiated. The future is lazy and not evaluated during shutdown. The shutdown will only begin after f completes, but other tasks may execute concurrently with f, 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.

    DO NOT CALL this.close as part of f, because it will result in a deadlock. DO NOT PUT retries, especially indefinite ones, inside f.

    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
    PerformUnlessClosing
  49. def performUnlessClosingOptionUSF[R](name: String)(otf: => OptionT[FutureUnlessShutdown, R])(implicit ec: ExecutionContext, traceContext: TraceContext): OptionT[FutureUnlessShutdown, R]
    Definition Classes
    PerformUnlessClosing
  50. def performUnlessClosingUSF[A](name: String)(f: => FutureUnlessShutdown[A])(implicit ec: ExecutionContext, traceContext: TraceContext): FutureUnlessShutdown[A]
    Definition Classes
    PerformUnlessClosing
  51. def performUnlessClosingUSFAsync[A](name: String)(f: => FutureUnlessShutdown[A])(asyncResultToWaitForF: (A) => FutureUnlessShutdown[_])(implicit ec: ExecutionContext, traceContext: TraceContext): FutureUnlessShutdown[A]

    Use this method if closing/shutdown of the object should wait for asynchronous computation to finish too.

    Use this method if closing/shutdown of the object should wait for asynchronous computation to finish too.

    f

    closing of this object will wait for all such spawned Futures to finish

    asyncResultToWaitForF

    closing of this object will wait also wait for all such asynchronous Futures to finish too

    returns

    the future spawned by f

    Definition Classes
    PerformUnlessClosing
  52. def remainingReaders(): Seq[String]
    Attributes
    protected[this]
    Definition Classes
    HasSynchronizeWithReaders
  53. def removeReader(handle: ReaderHandle): Unit

    TODO(#16601) Make this method private once PerformUnlessClosing doesn't need it any more

    TODO(#16601) Make this method private once PerformUnlessClosing doesn't need it any more

    Attributes
    protected[this]
    Definition Classes
    HasSynchronizeWithReaders
  54. def requestTick(ts: CantonTimestamp, immediately: Boolean = false)(implicit traceContext: TraceContext): TickRequest

    Register that we want to observe a synchronizer time.

    Register that we want to observe a synchronizer time. The tracker will attempt to make sure that we observe a sequenced event with this timestamp or greater. For ticks below * latestTime, observation has already happened and no further action is needed. If "immediately" is configured and the clock is a com.digitalasset.canton.time.SimClock, a new time proof will be fetched.

    The maximum timestamp that we support waiting for is data.CantonTimestamp.MaxValue minus the configured observation latency. If a greater value is provided a warning will be logged but no error will be thrown or returned.

  55. def requestTicks(timestamps: Seq[Traced[CantonTimestamp]], immediately: Boolean = false)(implicit traceContext: TraceContext): Seq[TickRequest]

    Register that we want to observe synchronizer times.

    Register that we want to observe synchronizer times. The tracker will attempt to make sure that we observe a sequenced event with the given timestamps or greater. For ticks below latestTime, observation has already happened and no further action is needed. If "immediately" is configured and the clock is a com.digitalasset.canton.time.SimClock, a new time proof will be fetched.

    The maximum timestamp that we support waiting for is data.CantonTimestamp.MaxValue minus the configured observation latency. If a greater value is provided a warning will be logged but no error will be thrown or returned.

  56. def runOnClose(task: RunOnClosing): UnlessShutdown[LifeCycleRegistrationHandle]

    Schedules the given task to be run upon closing.

    Schedules the given task to be run upon closing.

    returns

    An com.digitalasset.canton.lifecycle.UnlessShutdown.Outcome indicates that the task will have been run when the LifeCycleManager's closeAsync method completes or when AutoCloseable's close method returns, unless the returned LifeCycleRegistrationHandle was used to cancel the task or the task has been done beforehand. com.digitalasset.canton.lifecycle.UnlessShutdown.AbortedDueToShutdown if the task is not run due to closing. This always happens if isClosing returns true.

    Definition Classes
    OnShutdownRunner → HasRunOnClosing
  57. def runOnOrAfterClose(task: RunOnClosing)(implicit traceContext: TraceContext): LifeCycleRegistrationHandle

    Register a task to run when closing is initiated, or run it immediately if closing is already ongoing.

    Register a task to run when closing is initiated, or run it immediately if closing is already ongoing. Unlike runOnClose, this method does not guarantee that this task will have run by the time the LifeCycleManager's closeAsync method completes or AutoCloseable's close returns. This is because the task is run immediately if the component has already been closed.

    Definition Classes
    HasRunOnClosing
  58. final def runOnOrAfterClose_(task: RunOnClosing)(implicit traceContext: TraceContext): Unit

    Variant of runOnOrAfterClose that does not return a com.digitalasset.canton.lifecycle.LifeCycleRegistrationHandle.

    Variant of runOnOrAfterClose that does not return a com.digitalasset.canton.lifecycle.LifeCycleRegistrationHandle.

    Definition Classes
    HasRunOnClosing
  59. def runTaskUnlessDone(task: RunOnClosing)(implicit traceContext: TraceContext): Unit
    Attributes
    protected[this]
    Definition Classes
    OnShutdownRunner → HasRunOnClosing
  60. def snapshotIncomplete: Seq[String]

    Returns the list of currently incomplete tasks.

    Returns the list of currently incomplete tasks. Use only for inspection and debugging.

    Definition Classes
    HasFlushFuture
  61. def subscriptionResumesAfter(timestamp: CantonTimestamp)(implicit traceContext: TraceContext): Unit

    Inform the synchronizer time tracker about the first message the sequencer client resubscribes to from the sequencer.

    Inform the synchronizer time tracker about the first message the sequencer client resubscribes to from the sequencer. This is never considered a time proof event.

  62. def synchronizeWithClosingPatience: FiniteDuration
    Attributes
    protected[this]
    Definition Classes
    PerformUnlessClosing → HasSynchronizeWithReaders
  63. def synchronizeWithReaders()(implicit traceContext: TraceContext): Boolean
    Attributes
    protected[this]
    Definition Classes
    HasSynchronizeWithReaders
  64. final def synchronized[T0](arg0: => T0): T0
    Definition Classes
    AnyRef
  65. val timeouts: ProcessingTimeout
    Attributes
    protected
    Definition Classes
    SynchronizerTimeTracker → FlagCloseable
  66. def toString(): String
    Definition Classes
    AnyRef → Any
  67. final def unlessClosing[F[_], A](fa: => F[A])(implicit F: CanAbortDueToShutdown[F]): F[A]

    Runs the computation fa unless isClosing returns true.

    Runs the computation fa unless isClosing returns true.

    This method does not delay the closing while fa is running, unlike the methods in HasSynchronizeWithClosing. Accordingly, this method is useful for intermittent checks whether the result of the computation is still relevant.

    returns

    The result of fa or com.digitalasset.canton.lifecycle.UnlessShutdown.AbortedDueToShutdown if isClosing is true

    Definition Classes
    HasUnlessClosing
    Annotations
    @inline()
  68. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  69. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException]) @native()
  70. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  71. def withReader[F[_], A](name: String)(f: => F[A])(implicit traceContext: TraceContext, F: Thereafter[F]): UnlessShutdown[F[A]]
    Attributes
    protected[this]
    Definition Classes
    HasSynchronizeWithReaders
  72. def wrapHandler[Env <: Envelope[_]](handler: OrdinaryApplicationHandler[Env]): OrdinaryApplicationHandler[Env]

    Create a sequencing.OrdinaryApplicationHandler for updating this time tracker

Deprecated Value Members

  1. def finalize(): Unit
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.Throwable]) @Deprecated
    Deprecated

    (Since version 9)

Inherited from HasFlushFuture

Inherited from FlagCloseable

Inherited from PerformUnlessClosing

Inherited from HasSynchronizeWithReaders

Inherited from OnShutdownRunner

Inherited from HasRunOnClosing

Inherited from HasUnlessClosing

Inherited from AutoCloseable

Inherited from NamedLogging

Inherited from AnyRef

Inherited from Any

Ungrouped