1 files changed, 39 insertions, 0 deletions
diff --git a/kamon-core/src/main/scala/kamon/trace/Continuation.scala b/kamon-core/src/main/scala/kamon/trace/Continuation.scala
new file mode 100644
index 00000000..72d77597
--- /dev/null
+++ b/kamon-core/src/main/scala/kamon/trace/Continuation.scala
@@ -0,0 +1,39 @@
+/* =========================================================================================
+ * Copyright © 2013-2017 the kamon project <http://kamon.io/>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under the
+ * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
+ * either express or implied. See the License for the specific language governing permissions
+ * and limitations under the License.
+ * =========================================================================================
+ */
+
+package kamon.trace
+
+
+
+trait Continuation {
+  def activate(): ActiveSpan
+}
+
+object Continuation {
+
+  /**
+    *
+    * @param span
+    * @param tracer
+    */
+  final class Default(span: Span, tracer: Tracer) extends Continuation {
+    override def activate(): ActiveSpan =
+      tracer.makeActive(span)
+  }
+
+  object Default {
+    def apply(span: Span, tracer: Tracer): Default = new Default(span, tracer)
+  }
+}