refactor: default to none as observability to avoid Langfuse key warning (#1440)

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cognee/base_config.py

@@ -11,7 +11,8 @@ class BaseConfig(BaseSettings):
     data_root_directory: str = get_absolute_path(".data_storage")
     system_root_directory: str = get_absolute_path(".cognee_system")
     cache_root_directory: str = get_absolute_path(".cognee_cache")
-    monitoring_tool: object = Observer.LANGFUSE
+    monitoring_tool: object = Observer.NONE
+
 
     @pydantic.model_validator(mode="after")
     def validate_paths(self):
@@ -30,7 +31,10 @@ class BaseConfig(BaseSettings):
         # Require absolute paths for root directories
         self.data_root_directory = ensure_absolute_path(self.data_root_directory)
         self.system_root_directory = ensure_absolute_path(self.system_root_directory)
-        self.cache_root_directory = ensure_absolute_path(self.cache_root_directory)
+        # Set monitoring tool based on available keys
+        if self.langfuse_public_key and self.langfuse_secret_key:
+            self.monitoring_tool = Observer.LANGFUSE
+
         return self
 
     langfuse_public_key: Optional[str] = os.getenv("LANGFUSE_PUBLIC_KEY")

cognee/modules/observability/get_observe.py

@@ -9,3 +9,17 @@ def get_observe():
         from langfuse.decorators import observe
 
         return observe
+    elif monitoring == Observer.NONE:
+        # Return a no-op decorator that handles keyword arguments
+        def no_op_decorator(*args, **kwargs):
+            if len(args) == 1 and callable(args[0]) and not kwargs:
+                # Direct decoration: @observe
+                return args[0]
+            else:
+                # Parameterized decoration: @observe(as_type="generation")
+                def decorator(func):
+                    return func
+
+                return decorator
+
+        return no_op_decorator

cognee/modules/observability/observers.py

@@ -4,6 +4,7 @@ from enum import Enum
 class Observer(str, Enum):
     """Monitoring tools"""
 
+    NONE = "none"
     LANGFUSE = "langfuse"
     LLMLITE = "llmlite"
     LANGSMITH = "langsmith"