feat：接入mongodb

2026-09-30 04:27:35 -07:00
parent f92909ccda
commit 16212d7138
11 changed files with 663 additions and 43 deletions
@@ -59,7 +59,21 @@ class Settings:
        default_factory=lambda: int(os.getenv("CONVERSATION_HISTORY_TURNS", "6"))
    )

+    # MongoDB 连接串，未配置时会话记录和检查点回退为进程内存实现
+    mongodb_uri: str | None = field(
+        default_factory=lambda: os.getenv("MONGODB_URI") or None, repr=False
+    )
+    mongodb_db: str = field(
+        default_factory=lambda: os.getenv("MONGODB_DB") or "screen_agent"
+    )
+    # 检查点保留时长（秒），超时由 MongoDB TTL 索引清理，0 表示永久保留
+    mongodb_checkpoint_ttl: int = field(
+        default_factory=lambda: int(os.getenv("MONGODB_CHECKPOINT_TTL", "604800"))
+    )
+
    def __post_init__(self):
+        if self.mongodb_checkpoint_ttl < 0:
+            raise ValueError("MONGODB_CHECKPOINT_TTL 必须是非负整数")
        if self.conversation_empty_ttl <= 0:
            raise ValueError("CONVERSATION_EMPTY_TTL 必须是正整数")
        if self.conversation_history_turns < 0: