nl.grons.metrics.scala

Meter

Related Doc: package scala

class Meter extends AnyRef

A Scala facade class for DropwizardMeter.

Example usage:

class Example(val db: Db) extends Instrumented {
  private[this] val rowsLoadedMeter = metrics.meter("rowsLoaded")

  def load(id: Long): Seq[Row] = {
    val rows = db.load(id)
    rowsLoaded.mark(rows.size)
    rows
  }
}
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Instance Constructors

  1. new Meter(metric: com.codahale.metrics.Meter)

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
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  4. final def asInstanceOf[T0]: T0

    Definition Classes
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  5. def clone(): AnyRef

    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  6. def count: Long

    The number of events which have been marked.

  7. final def eq(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef
  8. def equals(arg0: Any): Boolean

    Definition Classes
    AnyRef → Any
  9. def exceptionMarker: AnyRef { def apply[A](f: => A): A }

    Gives a marker that runs f, marks the meter on an exception, and returns result of f.

    Gives a marker that runs f, marks the meter on an exception, and returns result of f.

    Example usage:

    class Example(val db: Db) extends Instrumented {
      private[this] val loadExceptionMeter = metrics.meter("load").exceptionMarker
    
      def load(id: Long) = loadExceptionMeter {
        db.load(id)
      }
    }
  10. def exceptionMarkerPF: AnyRef { def apply[A, B](pf: PartialFunction[A,B]): PartialFunction[A,B] }

    Converts partial function pf into a side-effecting partial function that meters thrown exceptions for every invocation of pf (for the cases it is defined).

    Converts partial function pf into a side-effecting partial function that meters thrown exceptions for every invocation of pf (for the cases it is defined). The result is passed unchanged.

    Example usage:

    class Example extends Instrumented {
      val isEven: PartialFunction[Int, String] = {
        case x if x % 2 == 0 => x+" is even"
        case 5 => throw new IllegalArgumentException("5 is unlucky")
      }
    
      val isEvenExceptionMeter = metrics.meter("isEvenExceptions")
      val meteredIsEven: PartialFunction[Int, String] = isEvenExceptionMeter.exceptionMarkerPF(isEven)
    
      val sample = 1 to 10
      sample collect meteredIsEven   // the meter counts 1 exception
    }
  11. def fifteenMinuteRate: Double

    The fifteen-minute exponentially-weighted moving average rate at which events have occurred since the meter was created.

    The fifteen-minute exponentially-weighted moving average rate at which events have occurred since the meter was created.

    This rate has the same exponential decay factor as the fifteen-minute load average in the top Unix command.

  12. def finalize(): Unit

    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )
  13. def fiveMinuteRate: Double

    The five-minute exponentially-weighted moving average rate at which events have occurred since the meter was created.

    The five-minute exponentially-weighted moving average rate at which events have occurred since the meter was created.

    This rate has the same exponential decay factor as the five-minute load average in the top Unix command.

  14. final def getClass(): Class[_]

    Definition Classes
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  15. def hashCode(): Int

    Definition Classes
    AnyRef → Any
  16. final def isInstanceOf[T0]: Boolean

    Definition Classes
    Any
  17. def mark(count: Long): Unit

    Marks the occurrence of a given number of events.

  18. def mark(): Unit

    Marks the occurrence of an event.

  19. def meanRate: Double

    The mean rate at which events have occurred since the meter was created.

  20. final def ne(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef
  21. final def notify(): Unit

    Definition Classes
    AnyRef
  22. final def notifyAll(): Unit

    Definition Classes
    AnyRef
  23. def oneMinuteRate: Double

    The one-minute exponentially-weighted moving average rate at which events have occurred since the meter was created.

    The one-minute exponentially-weighted moving average rate at which events have occurred since the meter was created.

    This rate has the same exponential decay factor as the one-minute load average in the top Unix command.

  24. final def synchronized[T0](arg0: ⇒ T0): T0

    Definition Classes
    AnyRef
  25. def toString(): String

    Definition Classes
    AnyRef → Any
  26. final def wait(): Unit

    Definition Classes
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    Annotations
    @throws( ... )
  27. final def wait(arg0: Long, arg1: Int): Unit

    Definition Classes
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    @throws( ... )
  28. final def wait(arg0: Long): Unit

    Definition Classes
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    @throws( ... )

Deprecated Value Members

  1. def exceptionMarkerPartialFunction: AnyRef { def apply[A, B](pf: PartialFunction[A,B]): PartialFunction[A,B] }

    Annotations
    @deprecated @inline()
    Deprecated

    (Since version 3.0.2) please use exceptionMarkerPF

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