GRÜN: Erwartungen implementiert

diff --git a/src/main/java/de/juplo/kafka/SumBusinessLogic.java b/src/main/java/de/juplo/kafka/SumBusinessLogic.java
index 5cb906a..605e55c 100644 (file)
--- a/src/main/java/de/juplo/kafka/SumBusinessLogic.java
+++ b/src/main/java/de/juplo/kafka/SumBusinessLogic.java
@@ -31,6 +31,6 @@ public class SumBusinessLogic
 
   public synchronized Optional<Long> getSum(String user)
   {
-    return Optional.empty();
+    return Optional.ofNullable(state.get(user));
   }
 }