can anyone provide the sample project link with playframework-2.5+kamon latest jars+prometheus.

[Chandra Sekhar]

I have been trying to setup kamon with play framework-2.5 and starting play framework from IntelliJ with java agent aspectjweaver-1.8.13.jar application started but there are some below is isues and no metrics 

org.aspectj.weaver.tools.Jdk14Trace error

SEVERE: scala/concurrent/impl/CallbackRunnable

java.lang.NullPointerException

at org.aspectj.weaver.ResolvedType.conflictingSignature(ResolvedType.java:707)

at org.aspectj.weaver.ResolvedType.clashesWithExistingMember(ResolvedType.java:1874)

at org.aspectj.weaver.ResolvedType.addInterTypeMunger(ResolvedType.java:1730)

at org.aspectj.weaver.bcel.BcelWeaver.weaveNormalTypeMungers(BcelWeaver.java:1628)

at org.aspectj.weaver.bcel.BcelWeaver.addNormalTypeMungers(BcelWeaver.java:1437)

at org.aspectj.weaver.bcel.BcelWeaver.weave(BcelWeaver.java:1124)

at org.aspectj.weaver.tools.WeavingAdaptor.getWovenBytes(WeavingAdaptor.java:527)

at org.aspectj.weaver.tools.WeavingAdaptor.weaveClass(WeavingAdaptor.java:363)

at org.aspectj.weaver.loadtime.Aj.preProcess(Aj.java:121)

at org.aspectj.weaver.loadtime.ClassPreProcessorAgentAdapter.transform(ClassPreProcessorAgentAdapter.java:54)

at sun.instrument.TransformerManager.transform(TransformerManager.java:188)

Below are my configuration details ? can anyone help what i am missing or provide some sample play application with Prometheus? is aop.xml required?

Intellij . VM params:

-Xms512M -Xmx1024M -Xss1M -XX:+CMSClassUnloadingEnabled -javaagent:/Users/chandu/.ivy2/cache/org.aspectj/aspectjweaver/jars/aspectjweaver-1.8.13.jar -Dkamon.auto-start=true

build.sbt:

name := """kamon-play-java"""

version := "1.0-SNAPSHOT"

lazy val root = (project in file(".")).enablePlugins(PlayJava,JavaAppPackaging,JavaAgent).disablePlugins(PlayLogback)
//javaAgents += "org.aspectj" % "aspectjweaver" % "1.8.13"

scalaVersion := "2.11.7"

resolvers += "scalaz-bintray" at "http://dl.bintray.com/scalaz/releases"

libraryDependencies ++= Seq(
  javaJdbc,
  cache,
  javaWs
)


val kamonVersion_1_1_0 = "1.1.0"
val kamonVersion_1_0_0 = "1.0.0"

libraryDependencies += "io.kamon" %% "kamon-core" % kamonVersion_1_1_0
libraryDependencies += "io.kamon" %% "kamon-play-2.5" % kamonVersion_1_1_0
libraryDependencies += "io.kamon" %% "kamon-system-metrics" % kamonVersion_1_0_0
libraryDependencies += "io.kamon" %% "kamon-statsd" % kamonVersion_1_0_0
libraryDependencies += "io.kamon" %% "kamon-prometheus" % "1.1.1"
libraryDependencies += "org.aspectj" % "aspectjweaver" % "1.8.13"

//javaOptions in Universal += "-Dorg.aspectj.tracing.factory=default"

routesGenerator := InjectedRoutesGenerator

application.conf:

play.crypto.secret = "changeme"

# The application languages
# ~~~~~
play.i18n.langs = [ "en" ]


akka {
  loglevel = DEBUG
  //extensions = ["kamon.akka.Akka", "kamon.statsd.StatsD"]
}

kamon {
  metric {
    tick-interval = 1 seconds
    track-unmatched-entities = yes

  }

  statsd {
    hostname = "127.0.0.1"
    port = 8125
    flush-interval = 1 seconds
    # Subscription patterns used to select which metrics will be pushed to StatsD. Note that first, metrics
    # collection for your desired entities must be activated under the kamon.metrics.filters settings.
    subscriptions {
      histogram       = [ "**" ]
      min-max-counter = [ "**" ]
      gauge           = [ "**" ]
      counter         = [ "**" ]
      trace           = [ "**" ]
      trace-segment   = [ "**" ]
      akka-actor      = [ "**" ]
      akka-dispatcher = [ "**" ]
      akka-router     = [ "**" ]
      system-metric   = [ "**" ]
      http-server     = [ "**" ]
    }
    metric-key-generator = kamon.statsd.SimpleMetricKeyGenerator
    simple-metric-key-generator {
      application = "my-application"
      include-hostname = true
      hostname-override = none
      metric-name-normalization-strategy = normalize
    }
  }



  # ======================================== #
  # kamon-prometheus reference configuration #
  # ======================================== #

  prometheus {

    # Enable or disable publishing the Prometheus scraping enpoint using a embedded server.
    start-embedded-http-server = yes

    # Enable of disable including tags from kamon.prometheus.environment as labels
    include-environment-tags = no

    buckets {
      default-buckets = [
        10,
        30,
        100,
        300,
        1000,
        3000,
        10000,
        30000,
        100000
      ]

      time-buckets = [
        0.005,
        0.01,
        0.025,
        0.05,
        0.075,
        0.1,
        0.25,
        0.5,
        0.75,
        1,
        2.5,
        5,
        7.5,
        10
      ]

      information-buckets = [
        512,
        1024,
        2048,
        4096,
        16384,
        65536,
        524288,
        1048576
      ]

      # Per metric overrides are possible by specifying the metric name and the histogram buckets here
      custom {
        // example:
        // "akka.actor.processing-time" = [0.1, 1.0, 10.0]
      }
    }


    embedded-server {

      # Hostname and port used by the embedded web server to publish the scraping enpoint.
      hostname = 127.0.0.1
      port = 9095
    }
  }

  modules {
    kamon-log-reporter.auto-start = no
    kamon-scala.auto-start = yes
    kamon-system-metrics.auto-start = yes
    kamon-statsd.auto-start = no
    kamon-prometheus.auto-start = yes
    kamon-akka.auto-start = yes
  }

}

plugin.sbt:

// The Play plugin
addSbtPlugin("com.typesafe.play" % "sbt-plugin" % "2.5.10")

// Web plugins
addSbtPlugin("com.typesafe.sbt" % "sbt-coffeescript" % "1.0.0")
addSbtPlugin("com.typesafe.sbt" % "sbt-less" % "1.1.0")
addSbtPlugin("com.typesafe.sbt" % "sbt-jshint" % "1.0.4")
addSbtPlugin("com.typesafe.sbt" % "sbt-rjs" % "1.0.8")
addSbtPlugin("com.typesafe.sbt" % "sbt-digest" % "1.1.1")
addSbtPlugin("com.typesafe.sbt" % "sbt-mocha" % "1.1.0")
addSbtPlugin("org.irundaia.sbt" % "sbt-sassify" % "1.4.6")

// Play enhancer - this automatically generates getters/setters for public fields
// and rewrites accessors of these fields to use the getters/setters. Remove this
// plugin if you prefer not to have this feature, or disable on a per project
// basis using disablePlugins(PlayEnhancer) in your build.sbt
addSbtPlugin("com.typesafe.sbt" % "sbt-play-enhancer" % "1.1.0")

// Play Ebean support, to enable, uncomment this line, and enable in your build.sbt using
// enablePlugins(PlayEbean).
// addSbtPlugin("com.typesafe.sbt" % "sbt-play-ebean" % "3.0.2")


resolvers += Resolver.bintrayIvyRepo("kamon-io", "sbt-plugins")
addSbtPlugin("io.kamon" % "sbt-aspectj-play-runner" % "1.0.4")


addSbtPlugin("com.lightbend.sbt" % "sbt-javaagent" % "0.1.4")