ййй

src/app/modules/agent_api/infrastructure/streaming/replay_buffer.py

@@ -0,0 +1,20 @@
+from __future__ import annotations
+
+from collections import defaultdict
+
+from app.modules.agent_api.domain.events.client_event import ClientEventRecord
+
+
+class ReplayBuffer:
+    def __init__(self, limit: int = 200) -> None:
+        self._limit = limit
+        self._items: dict[str, list[ClientEventRecord]] = defaultdict(list)
+
+    def append(self, request_id: str, event: ClientEventRecord) -> None:
+        history = self._items[request_id]
+        history.append(event)
+        if len(history) > self._limit:
+            del history[: len(history) - self._limit]
+
+    def list(self, request_id: str) -> list[ClientEventRecord]:
+        return list(self._items.get(request_id, []))