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package kamon
import java.util.UUID
import akka.actor.ActorPath
case class TraceContext(id: UUID, entries: List[TraceEntry]) {
def fork = this.copy(entries = Nil)
def withEntry(entry: TraceEntry) = this.copy(entries = entry :: entries)
}
object TraceContext {
private val context = new ThreadLocal[Option[TraceContext]] {
override def initialValue(): Option[TraceContext] = None
}
def current = context.get
def clear = context.remove
def set(ctx: TraceContext) = context.set(Some(ctx))
def start = set(TraceContext(UUID.randomUUID(), Nil))
}
trait TraceEntry
case class MessageExecutionTime(actorPath: ActorPath, initiated: Long, ended: Long)
case class CodeBlockExecutionTime(blockName: String, begin: Long, end: Long) extends TraceEntry
trait TraceSupport {
def withContext[Out](func: => Any => Out, ctx: TraceContext) = {
TraceContext.set(ctx)
val result = func
TraceContext.clear
result
}
}
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