194 lines
4.2 KiB
Python
194 lines
4.2 KiB
Python
"""
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Agent Memory - RDB 关系数据库存储
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【红色模块 - 待实现】
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提供关系数据库的存储和查询能力。
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功能（计划）：
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- 连接池管理
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- CRUD 操作
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- 事务支持
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- 迁移管理
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用途（计划）：
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- 存储任务状态
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- 存储租户配置
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- 存储审计日志
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支持的后端（计划）：
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- MySQL
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- PostgreSQL
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- SQLite
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示例（计划）：
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rdb = RDB(config)
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# 查询
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tasks = await rdb.query(
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"SELECT * FROM tasks WHERE status = ?",
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["pending"]
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)
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# 插入
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await rdb.execute(
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"INSERT INTO tasks (id, type, status) VALUES (?, ?, ?)",
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["task_123", "memory_add", "pending"]
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)
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"""
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from typing import Dict, Any, Optional, List
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from dataclasses import dataclass
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from enum import Enum
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import logging
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logger = logging.getLogger(__name__)
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class RDBBackend(Enum):
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"""数据库后端"""
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MYSQL = "mysql"
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POSTGRESQL = "postgresql"
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SQLITE = "sqlite"
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@dataclass
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class RDBConfig:
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"""
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RDB 配置
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TODO: 实现配置类
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"""
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backend: RDBBackend = RDBBackend.SQLITE
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host: str = "localhost"
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port: int = 3306
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database: str = "agent_memory"
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username: str = ""
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password: str = ""
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# 连接池配置
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pool_size: int = 10
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max_overflow: int = 20
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pool_timeout: int = 30
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class RDB:
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"""
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关系数据库存储
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TODO: 待实现
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- 多后端支持（MySQL/PostgreSQL/SQLite）
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- 连接池管理
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- 异步查询
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- 事务支持
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- ORM 集成（可选）
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"""
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def __init__(self, config: Optional[RDBConfig] = None):
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"""初始化 RDB"""
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self.config = config or RDBConfig()
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self._pool = None
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logger.info(f"RDB initialized (placeholder), backend={self.config.backend.value}")
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async def connect(self) -> None:
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"""
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建立数据库连接
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TODO: 实现连接池初始化
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"""
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raise NotImplementedError("RDB.connect is not implemented yet")
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async def close(self) -> None:
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"""
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关闭数据库连接
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TODO: 实现连接池关闭
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"""
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raise NotImplementedError("RDB.close is not implemented yet")
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async def query(
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self,
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sql: str,
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params: List[Any] = None
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) -> List[Dict[str, Any]]:
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"""
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执行查询
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TODO: 实现 SQL 查询
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Args:
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sql: SQL 语句
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params: 参数列表
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Returns:
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结果列表
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"""
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raise NotImplementedError("RDB.query is not implemented yet")
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async def execute(
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self,
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sql: str,
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params: List[Any] = None
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) -> int:
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"""
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执行语句（INSERT/UPDATE/DELETE）
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TODO: 实现 SQL 执行
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Args:
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sql: SQL 语句
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params: 参数列表
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Returns:
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受影响的行数
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"""
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raise NotImplementedError("RDB.execute is not implemented yet")
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async def execute_many(
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self,
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sql: str,
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params_list: List[List[Any]]
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) -> int:
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"""
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批量执行
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TODO: 实现批量执行
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Args:
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sql: SQL 语句
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params_list: 参数列表的列表
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Returns:
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受影响的总行数
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"""
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raise NotImplementedError("RDB.execute_many is not implemented yet")
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async def transaction(self):
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"""
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事务上下文管理器
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TODO: 实现事务支持
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Usage:
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async with rdb.transaction():
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await rdb.execute(...)
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await rdb.execute(...)
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"""
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raise NotImplementedError("RDB.transaction is not implemented yet")
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async def get_one(
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self,
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sql: str,
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params: List[Any] = None
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) -> Optional[Dict[str, Any]]:
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"""
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获取单条记录
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TODO: 实现单条查询
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"""
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raise NotImplementedError("RDB.get_one is not implemented yet")
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def get_stats(self) -> Dict[str, Any]:
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"""获取连接池统计信息"""
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raise NotImplementedError("RDB.get_stats is not implemented yet")
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