feature:基本框架

config/database/milvus.py

@@ -0,0 +1,39 @@
+"""Milvus 会话：全局单例 AsyncMilvusClient。
+
+timeout 入参是数据操作默认超时（用 MILVUS_TIMEOUT）；
+构造为急切连接、由注册表 init_db 做指数退避重试 + 严格模式兜底。
+"""
+from pymilvus import AsyncMilvusClient
+
+from config.settings import settings
+
+_client: AsyncMilvusClient | None = None
+
+
+def client() -> AsyncMilvusClient:
+    global _client
+    if _client is None:
+        _client = AsyncMilvusClient(
+            uri=settings.milvus.uri,
+            token=settings.milvus.token,
+            user=settings.milvus.user,
+            password=settings.milvus.password,
+            db_name=settings.milvus.db_name,
+            timeout=settings.milvus.timeout,
+        )
+    return _client
+
+
+async def init_db() -> None:
+    client()  # 急切建连；失败由注册表重试（config/database/__init__.py）
+
+
+async def dispose() -> None:
+    global _client
+    if _client is not None:
+        await _client.close()
+        _client = None
+
+
+async def check_health() -> None:
+    await client().get_server_version()