perf: halve function-table queries in get_all_models (#27230)

get_all_models ran four function-table queries: global actions, active
actions, global filters, active filters. Global functions are by
definition (type, is_active=True, is_global=True) — a subset of the
active set — so the global id sets can be derived from the active-rows
queries' is_global flag. Four queries become two, and each dropped
query returned full rows including every plugin's source code.

Also folds the mid-function 'models.default_metadata' read into the
Config.get_many already issued at the top of the function (one fewer
round trip; the existing `or {}` default handling is preserved).


Claude-Session: https://claude.ai/code/session_01MHg5zs1VBjvRWQ54qHpfYD

Co-authored-by: Claude <noreply@anthropic.com>

backend/open_webui/utils/models.py

@@ -68,6 +68,7 @@ async def get_all_models(request, refresh: bool = False, user: UserModel = None)
         'models.base_models_cache',
         'evaluation.arena.enable',
         'evaluation.arena.models',
+        'models.default_metadata',
     )
     if (
         request.app.state.MODELS
@@ -125,23 +126,21 @@ async def get_all_models(request, refresh: bool = False, user: UserModel = None)
             ]
         models = models + arena_models
 
-    global_action_ids = (
+    # One query per type: the global sets are subsets of the active sets, so
-        {function.id for function in await Functions.get_global_action_functions()} if ENABLE_PLUGINS else set()
+    # deriving them from the same rows halves the function-table queries.
-    )
+    if ENABLE_PLUGINS:
-    enabled_action_ids = (
+        active_actions = await Functions.get_functions_by_type('action', active_only=True)
-        {function.id for function in await Functions.get_functions_by_type('action', active_only=True)}
+        global_action_ids = {function.id for function in active_actions if function.is_global}
-        if ENABLE_PLUGINS
+        enabled_action_ids = {function.id for function in active_actions}
-        else set()
-    )
 
-    global_filter_ids = (
+        active_filters = await Functions.get_functions_by_type('filter', active_only=True)
-        {function.id for function in await Functions.get_global_filter_functions()} if ENABLE_PLUGINS else set()
+        global_filter_ids = {function.id for function in active_filters if function.is_global}
-    )
+        enabled_filter_ids = {function.id for function in active_filters}
-    enabled_filter_ids = (
+    else:
-        {function.id for function in await Functions.get_functions_by_type('filter', active_only=True)}
+        global_action_ids = set()
-        if ENABLE_PLUGINS
+        enabled_action_ids = set()
-        else set()
+        global_filter_ids = set()
-    )
+        enabled_filter_ids = set()
 
     custom_models = await Models.get_all_models()
 
@@ -305,7 +304,7 @@ async def get_all_models(request, refresh: bool = False, user: UserModel = None)
 
     # Apply global model defaults to all models
     # Per-model overrides take precedence over global defaults
-    default_metadata = await Config.get('models.default_metadata', {}) or {}
+    default_metadata = config.get('models.default_metadata') or {}
 
     if default_metadata:
         for model in models: