class DomainTimeTracker extends NamedLogging with FlagCloseable with HasFlushFuture
Provides a variety of methods for tracking time on the domain.
- 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 domain.
We currently assume that the domain and our host are roughly synchronized
and typically won't expect to see a time on a domain 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 domain. This is particularly useful if we are significantly behind and
reading many old events from the domain.
If no activity is happening on the domain we will try to ensure that we have observed an event at least once
during the minObservationDuration.
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Instance Constructors
- new DomainTimeTracker(config: DomainTimeTrackerConfig, clock: Clock, timeRequestSubmitter: TimeProofRequestSubmitter, timeouts: ProcessingTimeout, loggerFactory: NamedLoggerFactory)(implicit executionContext: ExecutionContext)
Value Members
- final def !=(arg0: Any): Boolean
- Definition Classes
- AnyRef → Any
- final def ##: Int
- Definition Classes
- AnyRef → Any
- final def ==(arg0: Any): Boolean
- Definition Classes
- AnyRef → Any
- def addToFlushAndLogError(name: String)(future: Future[_])(implicit loggingContext: ErrorLoggingContext): Unit
Adds the task
futureto the flush future so that doFlush completes only afterfuturehas completed.Adds the task
futureto the flush future so that doFlush completes only afterfuturehas completed. Logs an error if thefuturefails with an exception.- Attributes
- protected
- Definition Classes
- HasFlushFuture
- def addToFlushWithoutLogging(name: String)(future: Future[_]): Unit
Adds the task
futureto the flush future so that doFlush completes only afterfuturehas completed.Adds the task
futureto the flush future so that doFlush completes only afterfuturehas completed. The caller is responsible for logging any exceptions thrown inside the future.- Attributes
- protected
- Definition Classes
- HasFlushFuture
- final def asInstanceOf[T0]: T0
- Definition Classes
- Any
- def awaitTick(ts: CantonTimestamp)(implicit traceContext: TraceContext): Option[Future[CantonTimestamp]]
Waits for an event with a timestamp greater or equal to
tsto be observed from the domain.Waits for an event with a timestamp greater or equal to
tsto be observed from the domain. If we have already witnessed an event with a timestamp equal or exceeding the giventsthenNonewill be returned. - def cancelShutdownTask(token: Long): Unit
Removes a shutdown task from the list using a token returned by runOnShutdown
Removes a shutdown task from the list using a token returned by runOnShutdown
- Definition Classes
- OnShutdownRunner
- def clone(): AnyRef
- Attributes
- protected[lang]
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.CloneNotSupportedException]) @native() @HotSpotIntrinsicCandidate()
- 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
- def closingTimeout: FiniteDuration
- Attributes
- protected
- Definition Classes
- FlagCloseable → PerformUnlessClosing
- def containsShutdownTask(token: Long): Boolean
- Definition Classes
- OnShutdownRunner
- 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
- final def eq(arg0: AnyRef): Boolean
- Definition Classes
- AnyRef
- def equals(arg0: AnyRef): Boolean
- Definition Classes
- AnyRef → Any
- implicit def errorLoggingContext(implicit traceContext: TraceContext): ErrorLoggingContext
- Attributes
- protected
- Definition Classes
- NamedLogging
- def fetchTime(freshnessBound: NonNegativeFiniteDuration = NonNegativeFiniteDuration.Zero)(implicit traceContext: TraceContext): FutureUnlessShutdown[CantonTimestamp]
Fetches a recent domain timestamp.
Fetches a recent domain timestamp. If the latest received event has been received within the given
freshnessBound(measured on the participant clock) this domain 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 domain's timestamp of the event. So if the participant's local clock is ahead of the domain clock, the timestamp may be earlier than now minus the freshness bound.
- def fetchTimeProof(freshnessBound: NonNegativeFiniteDuration = NonNegativeFiniteDuration.Zero)(implicit traceContext: TraceContext): FutureUnlessShutdown[TimeProof]
Similar to
fetchTimebut will only return time proof. - def flush(): Future[Unit]
- Attributes
- protected[time]
- Annotations
- @VisibleForTesting()
- def flushCloseable(name: String, timeout: NonNegativeDuration): SyncCloseable
- Attributes
- protected
- Definition Classes
- HasFlushFuture
- final def getClass(): Class[_ <: AnyRef]
- Definition Classes
- AnyRef → Any
- Annotations
- @native() @HotSpotIntrinsicCandidate()
- def hashCode(): Int
- Definition Classes
- AnyRef → Any
- Annotations
- @native() @HotSpotIntrinsicCandidate()
- def internalPerformUnlessClosingF[A](name: String)(f: => Future[A])(implicit ec: ExecutionContext, traceContext: TraceContext): UnlessShutdown[Future[A]]
- Attributes
- protected
- Definition Classes
- PerformUnlessClosing
- 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
performUnlessClosingand friends.- Definition Classes
- OnShutdownRunner
- final def isInstanceOf[T0]: Boolean
- Definition Classes
- Any
- 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.
- Attributes
- protected
- Definition Classes
- PerformUnlessClosing
- def latestTime: Option[CantonTimestamp]
Fetch the latest timestamp we have observed from the domain.
Fetch the latest timestamp we have observed from the domain. Note this isn't restored on startup so will be empty until the first event after starting is seen.
- def logger: TracedLogger
- Attributes
- protected
- Definition Classes
- NamedLogging
- val loggerFactory: NamedLoggerFactory
- Attributes
- protected
- Definition Classes
- DomainTimeTracker → NamedLogging
- 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
- implicit def namedLoggingContext(implicit traceContext: TraceContext): NamedLoggingContext
- Attributes
- protected
- Definition Classes
- NamedLogging
- final def ne(arg0: AnyRef): Boolean
- Definition Classes
- AnyRef
- def noTracingLogger: Logger
- Attributes
- protected
- Definition Classes
- NamedLogging
- final def notify(): Unit
- Definition Classes
- AnyRef
- Annotations
- @native() @HotSpotIntrinsicCandidate()
- final def notifyAll(): Unit
- Definition Classes
- AnyRef
- Annotations
- @native() @HotSpotIntrinsicCandidate()
- def onCloseFailure(e: Throwable): Unit
- Attributes
- protected
- Definition Classes
- PerformUnlessClosing
- def onClosed(): Unit
- Definition Classes
- DomainTimeTracker → PerformUnlessClosing
- 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()
- def performUnlessClosing[A](name: String)(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.DO NOT CALL
this.closeas part off, because it will result in a deadlock.- f
The task to perform
- returns
scala.None$ if a shutdown has been initiated. Otherwise the result of the task.
- Definition Classes
- PerformUnlessClosing
- 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
- 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
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.DO NOT CALL
this.closeas part ofetf, because it will result in a deadlock.- etf
The task to perform
- Definition Classes
- PerformUnlessClosing
- def performUnlessClosingEitherTF[E, R](name: String, onClosing: => E)(etf: => EitherT[Future, E, Future[R]])(implicit ec: ExecutionContext, traceContext: TraceContext): EitherT[Future, E, Future[R]]
- Definition Classes
- PerformUnlessClosing
- def performUnlessClosingEitherU[E, R](name: String)(etf: => EitherT[Future, E, R])(implicit ec: ExecutionContext, traceContext: TraceContext): EitherT[FutureUnlessShutdown, E, R]
- Definition Classes
- PerformUnlessClosing
- def performUnlessClosingEitherUSF[E, R](name: String)(etf: => EitherT[FutureUnlessShutdown, E, R])(implicit ec: ExecutionContext, traceContext: TraceContext): EitherT[FutureUnlessShutdown, E, R]
- Definition Classes
- PerformUnlessClosing
- def performUnlessClosingF[A](name: String)(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.DO NOT CALL
this.closeas part off, because it will result in a deadlock.- 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
- def performUnlessClosingUSF[A](name: String)(f: => FutureUnlessShutdown[A])(implicit ec: ExecutionContext, traceContext: TraceContext): FutureUnlessShutdown[A]
- Definition Classes
- PerformUnlessClosing
- def requestTick(ts: CantonTimestamp, immediately: Boolean = false)(implicit traceContext: TraceContext): Unit
Register that we want to observe a domain time.
Register that we want to observe a domain time. The tracker will attempt to make sure that we observe a sequenced event with this timestamp or greater. If "immediately" is configured and the clock is a 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.
- def requestTicks(timestamps: Seq[CantonTimestamp], immediately: Boolean = false)(implicit traceContext: TraceContext): Unit
Register that we want to observe domain times.
Register that we want to observe domain times. The tracker will attempt to make sure that we observe a sequenced event with the given timestamps or greater. If "immediately" is configured and the clock is a 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.
- def runOnShutdown[T](task: RunOnShutdown)(implicit traceContext: TraceContext): Long
Same as runOnShutdown_ but returns a token that allows you to remove the task explicitly from being run using cancelShutdownTask
Same as runOnShutdown_ but returns a token that allows you to remove the task explicitly from being run using cancelShutdownTask
- Definition Classes
- OnShutdownRunner
- def runOnShutdown_[T](task: RunOnShutdown)(implicit traceContext: TraceContext): Unit
Register a task to run when shutdown is initiated.
Register a task to run when shutdown is initiated.
You can use this for example to register tasks that cancel long-running computations, whose termination you can then wait for in "closeAsync".
- Definition Classes
- OnShutdownRunner
- def runStateChanged(waitingState: Boolean = false): Unit
- Attributes
- protected
- Definition Classes
- OnShutdownRunner
- Annotations
- @VisibleForTesting()
- 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
- def subscriptionResumesAfter(timestamp: CantonTimestamp)(implicit traceContext: TraceContext): Unit
Inform the domain time tracker about the first message the sequencer client resubscribes to from the sequencer.
Inform the domain time tracker about the first message the sequencer client resubscribes to from the sequencer. This is never considered a time proof event.
- final def synchronized[T0](arg0: => T0): T0
- Definition Classes
- AnyRef
- val timeouts: ProcessingTimeout
- Attributes
- protected
- Definition Classes
- DomainTimeTracker → FlagCloseable
- def toString(): String
- Definition Classes
- AnyRef → Any
- final def wait(arg0: Long, arg1: Int): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.InterruptedException])
- final def wait(arg0: Long): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.InterruptedException]) @native()
- final def wait(): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.InterruptedException])
- def wrapHandler[Env <: Envelope[_]](handler: OrdinaryApplicationHandler[Env]): OrdinaryApplicationHandler[Env]
Create a sequencing.OrdinaryApplicationHandler for updating this time tracker