refactor: Enable multi user mode by default if graph and vector db providers support it

.env.template

@@ -169,8 +169,9 @@ REQUIRE_AUTHENTICATION=False
 #       Vector: LanceDB
 #       Graph: KuzuDB
 #
-# It enforces LanceDB and KuzuDB use and uses them to create databases per Cognee user + dataset
-ENABLE_BACKEND_ACCESS_CONTROL=False
+# It enforces creation of databases per Cognee user + dataset. Does not work with some graph and database providers.
+# Disable mode when using not supported graph/vector databases.
+ENABLE_BACKEND_ACCESS_CONTROL=True
 
 ################################################################################
 # ☁️ Cloud Sync Settings

cognee/context_global_variables.py

@@ -4,6 +4,8 @@ from typing import Union
 from uuid import UUID
 
 from cognee.base_config import get_base_config
+from cognee.infrastructure.databases.vector.config import get_vectordb_context_config
+from cognee.infrastructure.databases.graph.config import get_graph_context_config
 from cognee.infrastructure.databases.utils import get_or_create_dataset_database
 from cognee.infrastructure.files.storage.config import file_storage_config
 from cognee.modules.users.methods import get_user
@@ -14,11 +16,50 @@ vector_db_config = ContextVar("vector_db_config", default=None)
 graph_db_config = ContextVar("graph_db_config", default=None)
 session_user = ContextVar("session_user", default=None)
 
+vector_dbs_with_multi_user_support = ["lancedb"]
+graph_dbs_with_multi_user_support = ["kuzu"]
+
 
 async def set_session_user_context_variable(user):
     session_user.set(user)
 
 
+def check_multi_user_support():
+    graph_db_config = get_graph_context_config()
+    vector_db_config = get_vectordb_context_config()
+    if (
+        graph_db_config["graph_database_provider"] in graph_dbs_with_multi_user_support
+        and vector_db_config["vector_db_provider"] in vector_dbs_with_multi_user_support
+    ):
+        return True
+    else:
+        return False
+
+
+def check_backend_access_control_mode():
+    backend_access_control = os.environ.get("ENABLE_BACKEND_ACCESS_CONTROL", None)
+    if backend_access_control is None:
+        # If backend access control is not defined in environment variables,
+        # enable it by default if graph and vector DBs can support it, otherwise disable it
+        multi_user_support = check_multi_user_support()
+        if multi_user_support:
+            return "true"
+        else:
+            return "false"
+    elif backend_access_control.lower() == "true":
+        # If enabled, ensure that the current graph and vector DBs can support it
+        multi_user_support = check_multi_user_support()
+        if not multi_user_support:
+            raise EnvironmentError(
+                "ENABLE_BACKEND_ACCESS_CONTROL is set to true but the current graph and/or vector databases do not support multi-user access control. Please use supported databases or disable backend access control."
+            )
+        else:
+            return "true"
+    else:
+        # If explicitly disabled, return false
+        return "false"
+
+
 async def set_database_global_context_variables(dataset: Union[str, UUID], user_id: UUID):
     """
     If backend access control is enabled this function will ensure all datasets have their own databases,
@@ -40,7 +81,7 @@ async def set_database_global_context_variables(dataset: Union[str, UUID], user_
 
     base_config = get_base_config()
 
-    if not os.getenv("ENABLE_BACKEND_ACCESS_CONTROL", "false").lower() == "true":
+    if not check_backend_access_control_mode() == "true":
         return
 
     user = await get_user(user_id)

cognee/modules/search/methods/search.py

@@ -1,4 +1,3 @@
-import os
 import json
 import asyncio
 from uuid import UUID
@@ -9,6 +8,7 @@ from cognee.infrastructure.databases.graph import get_graph_engine
 from cognee.shared.logging_utils import get_logger
 from cognee.shared.utils import send_telemetry
 from cognee.context_global_variables import set_database_global_context_variables
+from cognee.context_global_variables import check_backend_access_control_mode
 
 from cognee.modules.engine.models.node_set import NodeSet
 from cognee.modules.graph.cognee_graph.CogneeGraphElements import Edge
@@ -74,7 +74,7 @@ async def search(
     )
 
     # Use search function filtered by permissions if access control is enabled
-    if os.getenv("ENABLE_BACKEND_ACCESS_CONTROL", "false").lower() == "true":
+    if check_backend_access_control_mode() == "true":
         search_results = await authorized_search(
             query_type=query_type,
             query_text=query_text,
@@ -156,7 +156,7 @@ async def search(
         )
     else:
         # This is for maintaining backwards compatibility
-        if os.getenv("ENABLE_BACKEND_ACCESS_CONTROL", "false").lower() == "true":
+        if check_backend_access_control_mode() == "true":
             return_value = []
             for search_result in search_results:
                 prepared_search_results = await prepare_search_result(search_result)

cognee/modules/users/methods/get_authenticated_user.py

@@ -5,6 +5,7 @@ from ..models import User
 from ..get_fastapi_users import get_fastapi_users
 from .get_default_user import get_default_user
 from cognee.shared.logging_utils import get_logger
+from cognee.context_global_variables import check_backend_access_control_mode
 
 
 logger = get_logger("get_authenticated_user")
@@ -12,7 +13,7 @@ logger = get_logger("get_authenticated_user")
 # Check environment variable to determine authentication requirement
 REQUIRE_AUTHENTICATION = (
     os.getenv("REQUIRE_AUTHENTICATION", "false").lower() == "true"
-    or os.getenv("ENABLE_BACKEND_ACCESS_CONTROL", "false").lower() == "true"
+    or check_backend_access_control_mode() == "true"
 )
 
 fastapi_users = get_fastapi_users()

examples/python/relational_database_migration_example.py

@@ -31,6 +31,9 @@ from cognee.infrastructure.databases.vector.pgvector import (
 
 
 async def main():
+    # Disable backend access control to migrate relational data
+    os.environ["ENABLE_BACKEND_ACCESS_CONTROL"] = "false"
+
     # Clean all data stored in Cognee
     await cognee.prune.prune_data()
     await cognee.prune.prune_system(metadata=True)

logs/README.md

@@ -1,31 +0,0 @@
-# Logs Directory
-
-This directory contains the application logs for Cognee.
-
-## Log Files
-
-- Log files are named by date in the format `YYYY-MM-DD_HH-MM-SS.log`
-- Logs are stored in plain text format with a consistent structure
-- Each log entry includes:
-  - Timestamp (ISO format)
-  - Log level (padded to consistent width)
-  - Message
-  - Additional context (if any)
-  - Logger name (in square brackets)
-- Exception tracebacks are included for error logs
-
-## Sample Log Entry
-
-```
-2025-03-27T13:05:27.481446Z [INFO    ] Structured log message user_id=user123 action=login status=success [TestLogger]
-```
-
-## Retention Policy
-
-The system automatically keeps only the 10 most recent log files. Older log files are automatically deleted when new log files are created. This prevents excessive disk usage in long-running deployments.
-
-## Usage
-
-Logs are automatically generated by the application's logging mechanism. No manual actions are required to use this feature.
-
-The logs directory structure is preserved in version control, but the log files themselves are gitignored.