perf(assets): 优化节点树

修改树策略，做读优化，写的速度降低

apps/common/db/utils.py

@@ -0,0 +1,27 @@
+from common.utils import get_logger
+
+logger = get_logger(__file__)
+
+
+def get_object_if_need(model, pk):
+    if not isinstance(pk, model):
+        try:
+            return model.objects.get(id=pk)
+        except model.DoesNotExist as e:
+            logger.error(f'DoesNotExist: <{model.__name__}:{pk}> not exist')
+            raise e
+    return pk
+
+
+def get_objects_if_need(model, pks):
+    if not pks:
+        return pks
+    if not isinstance(pks[0], model):
+        objs = list(model.objects.filter(id__in=pks))
+        if len(objs) != len(pks):
+            pks = set(pks)
+            exists_pks = {o.id for o in objs}
+            not_found_pks = ','.join(pks - exists_pks)
+            logger.error(f'DoesNotExist: <{model.__name__}: {not_found_pks}>')
+        return objs
+    return pks