Version Matrix

tagless-metrics-core

Maven Central

Defines a core tagless dsl for incrementing/decrementing/etc metrics.

As of version 0.2.0, tagless-metrics supports Kamon 2.x for Scala 2.12 and 2.13.

Kamon 1.x is supported by version 0.1.0 of tagless-metrics and is availale for Scala 2.11 and 2.12 ... see below for further details.

tagless-metrics-kamon

Maven Central

Defines kamon-integration via the dsl.

Include

Add dependencies to built.sbt

libraryDependencies += "org.novelfs" %% "tagless-metrics-core" % "0.2.1"
libraryDependencies += "org.novelfs" %% "tagless-metrics-kamon" % "0.2.1"

Usage

You can import the instances individually if you wish, or simply:

import org.novelfs.taglessmetrics.kamon.implicits._

Import the metrics to be used

import org.novelfs.taglessmetrics.kamon.Counter

Counter usage:

val helloWorldCounter = Counter("hello-world-counter")

def printAndIncrementMetric[F[_] : Sync : IncrementMeric[?[_], Counter]] : F[Unit] =
  for {
    _ <- IncrementMetric[F, Counter].increment(helloWorldCounter.withTag("status", "before"))
    _ <- Sync[F].delay { println("Hello world" }
    _ <- IncrementMetric[F, Counter].increment(helloWorldCounter.withTag("status", "after"))
  } yield ()

Older versions

Kamon 1.x is supported by version 0.1.0 of tagless-metrics and is availale for Scala 2.11 and 2.12. Inclusion and usage are as above, but note that syntax follows the earlier Kamon release with refine used in place of withTag. Consequently the preceding example would be written,

val helloWorldCounter = Counter("hello-world-counter")

def printAndIncrementMetric[F[_] : Sync : IncrementMeric[?[_], Counter]] : F[Unit] =
  for {
    _ <- IncrementMetric[F, Counter].increment(helloWorldCounter.refine("status" -> "before"))
    _ <- Sync[F].delay { println("Hello world" }
    _ <- IncrementMetric[F, Counter].increment(helloWorldCounter.refine("status" -> "after"))
  } yield ()