lazy load eventbus

Author: xzrderek

eval_protocol/event_bus/__init__.py

@@ -1,5 +1,25 @@
 # Global event bus instance - uses SqliteEventBus for cross-process functionality
 from eval_protocol.event_bus.event_bus import EventBus
-from eval_protocol.event_bus.sqlite_event_bus import SqliteEventBus
 
-event_bus: EventBus = SqliteEventBus()
+
+def _get_default_event_bus():
+    from eval_protocol.event_bus.sqlite_event_bus import SqliteEventBus
+
+    return SqliteEventBus()
+
+
+# Lazy property that creates the event bus only when accessed
+class _LazyEventBus(EventBus):
+    def __init__(self):
+        self._event_bus: EventBus | None = None
+
+    def _get_event_bus(self):
+        if self._event_bus is None:
+            self._event_bus = _get_default_event_bus()
+        return self._event_bus
+
+    def __getattr__(self, name):
+        return getattr(self._get_event_bus(), name)
+
+
+event_bus: EventBus = _LazyEventBus()