perf(assets): 优化节点树

修改树策略，做读优化，写的速度降低

apps/perms/async_tasks/mapping_node_task.py

@@ -0,0 +1,47 @@
+from django.utils.crypto import get_random_string
+from perms.utils import rebuild_user_mapping_nodes_if_need_with_lock
+
+from common.thread_pools import SingletonThreadPoolExecutor
+from common.utils import get_logger
+from perms.models import RebuildUserTreeTask
+
+logger = get_logger(__name__)
+
+
+class Executor(SingletonThreadPoolExecutor):
+    pass
+
+
+executor = Executor()
+
+
+def run_mapping_node_tasks():
+    failed_user_ids = []
+
+    ident = get_random_string()
+    logger.debug(f'[{ident}]mapping_node_tasks running')
+
+    while True:
+        task = RebuildUserTreeTask.objects.exclude(
+            user_id__in=failed_user_ids
+        ).first()
+
+        if task is None:
+            break
+
+        user = task.user
+        try:
+            rebuild_user_mapping_nodes_if_need_with_lock(user)
+        except:
+            logger.exception(f'[{ident}]mapping_node_tasks_exception')
+            failed_user_ids.append(user.id)
+
+    logger.debug(f'[{ident}]mapping_node_tasks finished')
+
+
+def submit_update_mapping_node_task():
+    executor.submit(run_mapping_node_tasks)
+
+
+def submit_update_mapping_node_task_for_user(user):
+    executor.submit(rebuild_user_mapping_nodes_if_need_with_lock, user)