init

app/topic_locks.py

@@ -0,0 +1,13 @@
+import asyncio
+
+
+class TopicLockRegistry:
+  def __init__(self) -> None:
+    self._locks: dict[int, asyncio.Lock] = {}
+
+  def lock(self, max_chat_id: int) -> asyncio.Lock:
+    lock = self._locks.get(max_chat_id)
+    if lock is None:
+      lock = asyncio.Lock()
+      self._locks[max_chat_id] = lock
+    return lock