trait HealthListener extends AnyRef

A listener on the state of a HealthElement

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Abstract Value Members

  1. abstract def name: String

    Name of the listener.

    Name of the listener. Used for logging. Must not throw.

  2. abstract def poke()(implicit traceContext: TraceContext): Unit

    Called after the state of a health element has changed.

    Called after the state of a health element has changed.

    Implementations must be thread-safe in the sense that multiple notifications can run concurrently. Implementations must not block and should not execute significant computations as part of this call. In particular, it is wrong to assume that the listener has finished its updates by the time this method returns.

    We explicitly do NOT pass along the new state of the health element nor the health element itself. Instead, the listener must query the current state using HealthElement.getState. This ensures that we do not need to synchronize concurrent updates and notifications; the state obtained HealthElement.getState is guaranteed to be at least as up to date as the notification.

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  1. final def !=(arg0: Any): Boolean
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  2. final def ##: Int
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  3. final def ==(arg0: Any): Boolean
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  6. final def eq(arg0: AnyRef): Boolean
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  7. def equals(arg0: AnyRef): Boolean
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  8. final def getClass(): Class[_ <: AnyRef]
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  10. final def isInstanceOf[T0]: Boolean
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  11. final def ne(arg0: AnyRef): Boolean
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  12. final def notify(): Unit
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  13. final def notifyAll(): Unit
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  14. final def synchronized[T0](arg0: => T0): T0
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  15. def toString(): String
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  16. final def wait(arg0: Long, arg1: Int): Unit
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  17. final def wait(arg0: Long): Unit
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  18. final def wait(): Unit
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  1. def finalize(): Unit
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