chore: import upstream snapshot with attribution

server/services/websocket_logger.py

@@ -0,0 +1,30 @@
+import asyncio
+from typing import Any, Dict
+
+from entity.enums import LogLevel, EventType
+from utils.logger import WorkflowLogger, LogEntry
+from utils.structured_logger import get_workflow_logger
+
+
+class WebSocketLogger(WorkflowLogger):
+    """Workflow logger that also pushes entries via WebSocket."""
+
+    def __init__(self, websocket_manager, session_id: str, workflow_id: str = None, log_level: LogLevel = LogLevel.DEBUG):
+        super().__init__(workflow_id, log_level, log_to_console=False)
+        self.websocket_manager = websocket_manager
+        self.session_id = session_id
+
+    def add_log(self, level: LogLevel, message: str = None, node_id: str = None,
+                event_type: EventType = None, details: Dict[str, Any] = None,
+                duration: float = None) -> LogEntry | None:
+        log_entry = super().add_log(level, message, node_id, event_type, details, duration)
+        if not log_entry:
+            return None
+
+        # Send the message using the sync method which handles event loop properly
+        self.websocket_manager.send_message_sync(self.session_id, {
+            "type": "log",
+            "data": log_entry.to_dict()
+        })
+        
+        return log_entry