final class DependenciesHealthService extends HealthService

A DependenciesHealthService aggregates CloseableHealthComponents under critical and soft dependencies. Services are queryable through their name in the gRPC Health Check service. Both critical and soft dependencies are reported under their names too.

The state of the DependenciesHealthService is io.grpc.health.v1.HealthCheckResponse.ServingStatus.SERVING if and only if none of the critical dependencies have failed. Soft dependencies are merely reported as dependencies, but do not influence the status of the DependenciesHealthService itself.

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Inherited
  1. DependenciesHealthService
  2. HealthService
  3. CompositeHealthElement
  4. CloseableHealthElement
  5. HealthElement
  6. FlagCloseable
  7. PerformUnlessClosing
  8. OnShutdownRunner
  9. AutoCloseable
  10. AnyRef
  11. Any
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Visibility
  1. Public
  2. Protected

Instance Constructors

  1. new DependenciesHealthService(name: String, logger: TracedLogger, timeouts: ProcessingTimeout, criticalDependencies: Seq[HealthQuasiComponent], softDependencies: Seq[HealthQuasiComponent])

Type Members

  1. type State = ServingStatus

    The type of health states exposed by this component

    The type of health states exposed by this component

    Definition Classes
    HealthServiceHealthElement

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 alterDependencies(remove: Set[String], add: Map[String, HealthQuasiComponent]): Unit

    First removes all dependencies in remove, then adds all those in add.

    First removes all dependencies in remove, then adds all those in add. If an ID appears in remove and add, then the ID is replaced. Refreshes the state if any of the dependencies was changed.

    Updates of dependencies are not atomic: If this method is called concurrently multiple times, the resulting dependencies may not correspond to a serializable execution.

    If an dependency triggers a concurrent state refresh, then the state refresh may see an inconsistent set of dependencies and therefore derive an inconsistent state. This however is only temporary as in this case another state refresh will be triggered at the end.

    Attributes
    protected
    Definition Classes
    CompositeHealthElement
  5. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  6. final def associatedOnShutdownRunner: FlagCloseable

    The com.digitalasset.canton.lifecycle.OnShutdownRunner associated with this object.

    The com.digitalasset.canton.lifecycle.OnShutdownRunner associated with this object.

    When this com.digitalasset.canton.lifecycle.OnShutdownRunner closes, the health state permanently becomes closingState and all listeners are notified about this.

    Attributes
    protected
    Definition Classes
    CloseableHealthElementHealthElement
  7. 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
  8. def clone(): AnyRef
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.CloneNotSupportedException]) @native() @IntrinsicCandidate()
  9. 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
    FlagCloseableOnShutdownRunner → AutoCloseable
  10. def closingState: ServingStatus

    The state set when the associatedOnShutdownRunner closes

    The state set when the associatedOnShutdownRunner closes

    Attributes
    protected
    Definition Classes
    DependenciesHealthServiceHealthElement
  11. def closingTimeout: FiniteDuration
    Attributes
    protected
    Definition Classes
    FlagCloseablePerformUnlessClosing
  12. def combineDependentStates: ServingStatus

    Fetch the current states from the relevant dependencies and combine them into the new state to report for this element.

    Fetch the current states from the relevant dependencies and combine them into the new state to report for this element.

    Attributes
    protected
    Definition Classes
    DependenciesHealthServiceCompositeHealthElement
  13. def containsShutdownTask(token: Long): Boolean
    Definition Classes
    OnShutdownRunner
  14. def dependencies: Seq[HealthQuasiComponent]
  15. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  16. def equals(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef → Any
  17. final def getClass(): Class[_ <: AnyRef]
    Definition Classes
    AnyRef → Any
    Annotations
    @native() @IntrinsicCandidate()
  18. def getDependencies: Map[String, HealthQuasiComponent]
    Attributes
    protected
    Definition Classes
    CompositeHealthElement
  19. final def getState: State

    Returns the current state

    Returns the current state

    Definition Classes
    HealthElement
  20. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @native() @IntrinsicCandidate()
  21. def initialHealthState: ServingStatus

    The initial state upon creation

    The initial state upon creation

    Attributes
    protected
    Definition Classes
    DependenciesHealthServiceHealthElement
  22. def internalPerformUnlessClosingF[A](name: String)(f: => Future[A])(implicit ec: ExecutionContext, traceContext: TraceContext): UnlessShutdown[Future[A]]
    Attributes
    protected
    Definition Classes
    PerformUnlessClosing
  23. 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
  24. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  25. 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
  26. val logger: TracedLogger
    Attributes
    protected
    Definition Classes
    DependenciesHealthServiceHealthElementOnShutdownRunner
  27. 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
  28. val name: String

    Name of the health element.

    Name of the health element. Used for logging.

    Definition Classes
    DependenciesHealthServiceHealthElement
  29. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  30. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native() @IntrinsicCandidate()
  31. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native() @IntrinsicCandidate()
  32. def onCloseFailure(e: Throwable): Unit
    Attributes
    protected
    Definition Classes
    PerformUnlessClosing
  33. def onClosed(): Unit
    Attributes
    protected
    Definition Classes
    PerformUnlessClosing
  34. 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
    PerformUnlessClosingOnShutdownRunner
    Annotations
    @SuppressWarnings()
  35. 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.

    f

    The task to perform

    returns

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

    Definition Classes
    PerformUnlessClosing
  36. 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
  37. 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.

    etf

    The task to perform

    Definition Classes
    PerformUnlessClosing
  38. 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
  39. def performUnlessClosingEitherU[E, R](name: String)(etf: => EitherT[Future, E, R])(implicit ec: ExecutionContext, traceContext: TraceContext): EitherT[FutureUnlessShutdown, E, R]
    Definition Classes
    PerformUnlessClosing
  40. def performUnlessClosingEitherUSF[E, R](name: String)(etf: => EitherT[FutureUnlessShutdown, E, R])(implicit ec: ExecutionContext, traceContext: TraceContext): EitherT[FutureUnlessShutdown, E, R]
    Definition Classes
    PerformUnlessClosing
  41. 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.

    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
  42. def performUnlessClosingUSF[A](name: String)(f: => FutureUnlessShutdown[A])(implicit ec: ExecutionContext, traceContext: TraceContext): FutureUnlessShutdown[A]
    Definition Classes
    PerformUnlessClosing
  43. def prettyState: Pretty[ServingStatus]
    Attributes
    protected
    Definition Classes
    DependenciesHealthServiceHealthElement
  44. def refreshFromDependencies()(implicit traceContext: TraceContext): Unit
    Attributes
    protected
    Definition Classes
    CompositeHealthElement
  45. def refreshState(newState: Eval[State])(implicit traceContext: TraceContext): Unit

    Triggers a refresh of the component's state, using newState to determine the new state.

    Triggers a refresh of the component's state, using newState to determine the new state. May return before the newState has been evaluated and the listeners have been poked.

    Note that listeners need not be poked about every state change; it suffices that they are poked eventually after each state change. So if there are frequent updates to the state, possibly from concurrent calls, then the listeners may never see some intermediate states.

    Attributes
    protected
    Definition Classes
    HealthElement
  46. def registerOnHealthChange(listener: HealthListener): Boolean

    Registers a listener that gets poked upon each change of this element's health state.

    Registers a listener that gets poked upon each change of this element's health state.

    returns

    Whether the listener was not registered before

    Definition Classes
    HealthElement
  47. def removeDependency(id: String): Unit
    Attributes
    protected
    Definition Classes
    CompositeHealthElement
  48. 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
  49. 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
  50. def runStateChanged(waitingState: Boolean = false): Unit
    Attributes
    protected
    Definition Classes
    OnShutdownRunner
    Annotations
    @VisibleForTesting()
  51. def setDependency(id: String, dependency: HealthQuasiComponent): Unit
    Attributes
    protected
    Definition Classes
    CompositeHealthElement
  52. final def synchronized[T0](arg0: => T0): T0
    Definition Classes
    AnyRef
  53. val timeouts: ProcessingTimeout
    Attributes
    protected
    Definition Classes
    DependenciesHealthServiceFlagCloseable
  54. def toString(): String
    Definition Classes
    AnyRef → Any
  55. def unregisterOnHealthChange(listener: HealthListener): Boolean

    Unregisters a listener.

    Unregisters a listener.

    returns

    Whether the listener was registered before.

    Definition Classes
    HealthElement
  56. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  57. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException]) @native()
  58. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])

Deprecated Value Members

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

Inherited from HealthService

Inherited from CloseableHealthElement

Inherited from HealthElement

Inherited from FlagCloseable

Inherited from PerformUnlessClosing

Inherited from OnShutdownRunner

Inherited from AutoCloseable

Inherited from AnyRef

Inherited from Any

Ungrouped