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package kamon.metric.instrument
import kamon.metric.instrument.Gauge.CurrentValueCollector
import kamon.metric.instrument.Histogram.DynamicRange
import scala.concurrent.duration.FiniteDuration
case class InstrumentFactory(configurations: Map[String, InstrumentCustomSettings], defaults: DefaultInstrumentSettings, scheduler: RefreshScheduler) {
private def resolveSettings(instrumentName: String, codeSettings: Option[InstrumentSettings], default: InstrumentSettings): InstrumentSettings = {
configurations.get(instrumentName).flatMap { customSettings ⇒
codeSettings.map(cs ⇒ customSettings.combine(cs)) orElse (Some(customSettings.combine(default)))
} getOrElse (codeSettings.getOrElse(default))
}
def createHistogram(name: String, dynamicRange: Option[DynamicRange] = None): Histogram = {
val settings = resolveSettings(name, dynamicRange.map(dr ⇒ InstrumentSettings(dr, None)), defaults.histogram)
Histogram(settings.dynamicRange)
}
def createMinMaxCounter(name: String, dynamicRange: Option[DynamicRange] = None, refreshInterval: Option[FiniteDuration] = None): MinMaxCounter = {
val settings = resolveSettings(name, dynamicRange.map(dr ⇒ InstrumentSettings(dr, refreshInterval)), defaults.minMaxCounter)
MinMaxCounter(settings.dynamicRange, settings.refreshInterval.get, scheduler)
}
def createGauge(name: String, dynamicRange: Option[DynamicRange] = None, refreshInterval: Option[FiniteDuration] = None,
valueCollector: CurrentValueCollector): Gauge = {
val settings = resolveSettings(name, dynamicRange.map(dr ⇒ InstrumentSettings(dr, refreshInterval)), defaults.gauge)
Gauge(settings.dynamicRange, settings.refreshInterval.get, scheduler, valueCollector)
}
def createCounter(): Counter = Counter()
}
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