package kamon
import java.util.concurrent.atomic.AtomicReference
import com.typesafe.config.{Config, ConfigFactory}
import kamon.metric._
import kamon.trace.Tracer
import kamon.util.{HexCodec, MeasurementUnit}
import scala.concurrent.duration.Duration
import scala.concurrent.forkjoin.ThreadLocalRandom
object Kamon extends MetricLookup {
private val initialConfig = ConfigFactory.load()
private val incarnation = HexCodec.toLowerHex(ThreadLocalRandom.current().nextLong())
private val metricRegistry = new MetricRegistry(initialConfig)
private val reporterRegistry = new ReporterRegistryImpl(metricRegistry, initialConfig)
private val trazer = new Tracer(Kamon, reporterRegistry)
private val env = new AtomicReference[Environment](environmentFromConfig(ConfigFactory.load()))
def tracer: io.opentracing.Tracer =
trazer
def reporters: ReporterRegistry =
reporterRegistry
def environment: Environment =
env.get()
def reconfigure(config: Config): Unit = synchronized {
metricRegistry.reconfigure(config)
reporterRegistry.reconfigure(config)
env.set(environmentFromConfig(config))
}
override def histogram(name: String, unit: MeasurementUnit, tags: Map[String, String], dynamicRange:
Option[DynamicRange]): Histogram =
metricRegistry.histogram(name, unit, tags, dynamicRange)
override def counter(name: String, unit: MeasurementUnit, tags: Map[String, String]): Counter =
metricRegistry.counter(name, unit, tags)
override def gauge(name: String, unit: MeasurementUnit, tags: Map[String, String]): Gauge =
metricRegistry.gauge(name, unit, tags)
override def minMaxCounter(name: String, unit: MeasurementUnit, tags: Map[String, String], sampleInterval: Option[Duration],
dynamicRange: Option[DynamicRange]): MinMaxCounter =
metricRegistry.minMaxCounter(name, unit, tags, dynamicRange, sampleInterval)
case class Environment(config: Config, application: String, host: String, instance: String, incarnation: String)
private def environmentFromConfig(config: Config): Environment = {
val environmentConfig = config.getConfig("kamon.environment")
val application = environmentConfig.getString("application")
val host = environmentConfig.getString("host")
val instance = environmentConfig.getString("instance")
Environment(config, application, host, instance, incarnation)
}
}