basic separation of concerns between sub-projects

1 files changed, 59 insertions, 0 deletions

diff --git a/kamon-trace/src/main/scala/kamon/trace/Trace.scala b/kamon-trace/src/main/scala/kamon/trace/Trace.scala
new file mode 100644
index 00000000..232b7420
--- /dev/null
+++ b/kamon-trace/src/main/scala/kamon/trace/Trace.scala
@@ -0,0 +1,59 @@
+package kamon.trace
+
+import kamon.Kamon
+import scala.util.DynamicVariable
+import akka.actor._
+import scala.Some
+import kamon.trace.Trace.Register
+import scala.concurrent.duration._
+import java.util.concurrent.atomic.AtomicLong
+
+object Trace extends ExtensionId[TraceExtension] with ExtensionIdProvider {
+  def lookup(): ExtensionId[_ <: Extension] = Trace
+  def createExtension(system: ExtendedActorSystem): TraceExtension = new TraceExtension(system)
+
+
+  /*** Protocol */
+  case object Register
+
+
+
+  /** User API */
+  private[trace] val traceContext = new DynamicVariable[Option[TraceContext]](None)
+  private[trace] val tranid = new AtomicLong()
+
+
+  def context() = traceContext.value
+  def set(ctx: TraceContext) = traceContext.value = Some(ctx)
+
+  def start(name: String)(implicit system: ActorSystem) = set(newTraceContext)
+
+  def finish(): Option[TraceContext] = {
+    val ctx = context()
+    ctx.map(_.finish)
+    ctx
+  }
+
+  // TODO: FIX
+  def newTraceContext()(implicit system: ActorSystem): TraceContext = TraceContext(Kamon(Trace), tranid.getAndIncrement)
+}
+
+class TraceExtension(system: ExtendedActorSystem) extends Kamon.Extension {
+  def manager: ActorRef = system.actorOf(Props[TraceManager])
+}
+
+class TraceManager extends Actor {
+  var listeners: Seq[ActorRef] = Seq.empty
+
+  def receive = {
+    case Register => listeners = sender +: listeners
+    case segment: UowSegment =>
+      context.child(segment.id.toString) match {
+        case Some(agreggator) => agreggator ! segment
+        case None => context.actorOf(UowTraceAggregator.props(self, 30 seconds))
+      }
+
+    case trace: UowTrace =>
+      listeners foreach(_ ! trace)
+  }
+}