kyo.stats.otel.OTelTraceReceiver.scala Maven / Gradle / Ivy
package kyo.stats.otel
import io.opentelemetry.api.*
import io.opentelemetry.api.trace.Span as OSpan
import io.opentelemetry.context.Context
import kyo.*
import kyo.stats.*
import kyo.stats.Attributes
import kyo.stats.internal.Span
import kyo.stats.internal.TraceReceiver
class OTelTraceReceiver extends TraceReceiver {
private val otel = GlobalOpenTelemetry.get()
def startSpan(
scope: List[String],
name: String,
parent: Maybe[Span],
attributes: Attributes
)(implicit frame: Frame): Span < IO =
IO {
val b =
otel.getTracer(scope.mkString("_"))
.spanBuilder(name)
.setAllAttributes(OTelAttributes(attributes))
parent.collect {
case Span(SpanImpl(c)) =>
b.setParent(c)
}
Span(SpanImpl(b.startSpan().storeInContext(Context.current())))
}
private case class SpanImpl(c: Context) extends Span.Unsafe {
def end(): Unit =
OSpan.fromContext(c).end()
def event(name: String, a: Attributes) =
discard(OSpan.fromContext(c).addEvent(name, OTelAttributes(a)))
}
}