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package kamon
package metric
import java.util.concurrent.ScheduledThreadPoolExecutor
import java.util.concurrent.atomic.AtomicReference
import com.typesafe.config.Config
import kamon.metric.instrument.InstrumentFactory
import scala.collection.concurrent.TrieMap
trait RecorderRegistry {
def shouldTrack(entity: Entity): Boolean
def getRecorder(entity: Entity): EntityRecorder
def removeRecorder(entity: Entity): Boolean
}
class RecorderRegistryImpl(initialConfig: Config) extends RecorderRegistry {
private val scheduler = new ScheduledThreadPoolExecutor(1, numberedThreadFactory("kamon.metric.refresh-scheduler"))
private val instrumentFactory = new AtomicReference[InstrumentFactory]()
private val entityFilter = new AtomicReference[EntityFilter]()
private val entities = TrieMap.empty[Entity, EntityRecorder with EntitySnapshotProducer]
reconfigure(initialConfig)
override def shouldTrack(entity: Entity): Boolean =
entityFilter.get().accept(entity)
override def getRecorder(entity: Entity): EntityRecorder =
entities.atomicGetOrElseUpdate(entity, new DefaultEntityRecorder(entity, instrumentFactory.get(), scheduler))
override def removeRecorder(entity: Entity): Boolean =
entities.remove(entity).nonEmpty
private[kamon] def reconfigure(config: Config): Unit = synchronized {
instrumentFactory.set(InstrumentFactory.fromConfig(config))
entityFilter.set(EntityFilter.fromConfig(config))
val refreshSchedulerPoolSize = config.getInt("kamon.metric.refresh-scheduler-pool-size")
scheduler.setCorePoolSize(refreshSchedulerPoolSize)
}
private[kamon] def snapshot(): Seq[EntitySnapshot] = {
entities.values.map(_.snapshot()).toSeq
}
//private[kamon] def diagnosticData
}
case class RecorderRegistryDiagnostic(entities: Seq[Entity])
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