Packages

  • package root
    Definition Classes
    root
  • package nl
    Definition Classes
    root
  • package grons
    Definition Classes
    nl
  • package metrics4
    Definition Classes
    grons
  • package scala
    Definition Classes
    metrics4
  • class Meter extends AnyRef

    A Scala facade class for DropwizardMeter.

    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
  }
}
    Definition Classes
    scala
  • exceptionMarker
  • exceptionMarkerPF
o

nl.grons.metrics4.scala.Meter

exceptionMarkerPF

object exceptionMarkerPF

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
}
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