accept Option[SpanContext] as parent in SpanBuilder

2 files changed, 8 insertions, 2 deletions

diff --git a/kamon-core/src/main/scala/kamon/trace/Tracer.scala b/kamon-core/src/main/scala/kamon/trace/Tracer.scala
index 714f0215..71201871 100644
--- a/kamon-core/src/main/scala/kamon/trace/Tracer.scala
+++ b/kamon-core/src/main/scala/kamon/trace/Tracer.scala
@@ -157,6 +157,11 @@ object Tracer {
       this
     }
 
+    def asChildOf(parentContext: Option[SpanContext]): SpanBuilder = {
+      parentContext.foreach(asChildOf)
+      this
+    }
+
     def asChildOf(parentSpan: Span): SpanBuilder =
       asChildOf(parentSpan.context())
 
diff --git a/kamon-core/src/test/scala/kamon/trace/RealSpanSpec.scala b/kamon-core/src/test/scala/kamon/trace/RealSpanSpec.scala
index 61e651c2..db283d43 100644
--- a/kamon-core/src/test/scala/kamon/trace/RealSpanSpec.scala
+++ b/kamon-core/src/test/scala/kamon/trace/RealSpanSpec.scala
@@ -12,17 +12,18 @@ class RealSpanSpec extends WordSpec with Matchers with BeforeAndAfterAll with Ev
   "a real span" when {
     "sampled" should {
       "be sent to the Span reporters" in {
-
         Kamon.buildSpan("test-span")
           .withSpanTag("test", "value")
           .start()
           .finish()
 
-        eventually(timeout(50 milliseconds)) {
+        eventually(timeout(10 seconds)) {
           val finishedSpan = reporter.nextSpan().value
           finishedSpan.operationName shouldBe("test-span")
         }
       }
+
+
     }
   }