Fixing workbench init context implementation

Init context add timer could cause null pointer exception if model instances didn't exist.
scaleoutsoftware · Jan 24, 2024 · f07ed76 · f07ed76
1 parent 35ebad8
commit f07ed76
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/...pment/src/main/java/com/scaleoutsoftware/digitaltwin/development/TwinExecutionEngine.java b/...pment/src/main/java/com/scaleoutsoftware/digitaltwin/development/TwinExecutionEngine.java
@@ -75,8 +75,10 @@ void addDigitalTwin(String digitalTwinModelName, MessageProcessor digitalTwinMes
     }
 
     void addTimer(String modelName, String id, String timerName, TimerType type, Duration interval, TimerHandler handler) {
-
         ConcurrentHashMap<String,TwinProxy> modelInstances = _modelInstances.get(modelName);
+        if(modelInstances == null) {
+            modelInstances = new ConcurrentHashMap<>();
+        }
         TwinProxy proxy = modelInstances.get(id);
         SimulationScheduler scheduler = _simulationSchedulers.get(modelName);
         if (scheduler != null) {