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package xyz.driver.tracing
import java.util.UUID
import java.time.{Instant, ZoneId}
import java.time.format.DateTimeFormatter
import akka.event.LoggingAdapter
import spray.json._
class LoggingTracer(implicit logger: LoggingAdapter) extends Tracer {
import LoggingTracer.JsonProtocol._
override def submit(span: Span): Unit = logger.debug(
span.toJson.compactPrint
)
}
object LoggingTracer {
object JsonProtocol extends DefaultJsonProtocol {
implicit def uuidFormat: JsonFormat[UUID] = jsonFormat(
{ (js: JsValue) =>
js match {
case JsString(str) => UUID.fromString(str)
case other => deserializationError("expected string as UUID")
}
}, { (uuid: UUID) =>
JsString(uuid.toString)
}
)
private val timeFormatter = DateTimeFormatter
.ofPattern("yyyy-MM-dd'T'HH:mm:ss.SSSX")
.withZone(ZoneId.of("UTC"))
implicit def instantFormat: JsonFormat[Instant] = jsonFormat(
{ (js: JsValue) =>
js match {
case JsString(str) => Instant.parse(str)
case other => deserializationError(s"`$other` is not a valid instant")
}
}, { (instant: Instant) =>
JsString(timeFormatter.format(instant))
}
)
implicit def spanFormat: RootJsonFormat[Span] = jsonFormat7(Span.apply)
}
}
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