136 lines
3.8 KiB
Python
136 lines
3.8 KiB
Python
# ===========================================
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# 班级操行分管理系统 - 后端服务
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#
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# 开发者: Canglan
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# 联系方式: admin@sea-studio.top
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# 版权归属: Sea Network Technology Studio
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# 许可证: MIT License
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#
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# 版权所有 © Sea Network Technology Studio
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# ===========================================
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import aiomysql
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from typing import Optional, Dict, Any, List
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from contextlib import asynccontextmanager
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from config import settings
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from utils.logger import get_logger
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logger = get_logger(__name__)
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# 连接池实例
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_pool: Optional[aiomysql.Pool] = None
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async def init_db_pool() -> None:
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"""初始化数据库连接池"""
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global _pool
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try:
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_pool = await aiomysql.create_pool(
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host=settings.DB_HOST,
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port=settings.DB_PORT,
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user=settings.DB_USER,
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password=settings.DB_PASSWORD,
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db=settings.DB_NAME,
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minsize=1,
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maxsize=settings.DB_POOL_SIZE,
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maxsize=settings.DB_MAX_OVERFLOW,
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autocommit=False,
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charset='utf8mb4',
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cursorclass=aiomysql.DictCursor
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)
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logger.info("数据库连接池初始化成功")
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except Exception as e:
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logger.error(f"数据库连接池初始化失败: {e}")
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raise
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async def close_db_pool() -> None:
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"""关闭数据库连接池"""
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global _pool
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if _pool:
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_pool.close()
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await _pool.wait_closed()
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logger.info("数据库连接池已关闭")
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def get_pool() -> aiomysql.Pool:
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"""获取连接池实例"""
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if _pool is None:
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raise RuntimeError("数据库连接池未初始化")
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return _pool
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@asynccontextmanager
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async def get_connection():
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"""获取数据库连接（上下文管理器）"""
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pool = get_pool()
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async with pool.acquire() as conn:
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async with conn.cursor() as cursor:
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yield cursor
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await conn.commit()
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@asynccontextmanager
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async def get_transaction():
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"""获取事务连接"""
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pool = get_pool()
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async with pool.acquire() as conn:
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async with conn.cursor() as cursor:
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try:
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yield cursor
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await conn.commit()
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except Exception:
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await conn.rollback()
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raise
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async def execute_query(sql: str, params: tuple = None) -> List[Dict[str, Any]]:
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"""执行查询SQL"""
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async with get_connection() as cursor:
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await cursor.execute(sql, params)
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return await cursor.fetchall()
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async def execute_one(sql: str, params: tuple = None) -> Optional[Dict[str, Any]]:
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"""执行查询SQL（单条）"""
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async with get_connection() as cursor:
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await cursor.execute(sql, params)
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return await cursor.fetchone()
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async def execute_insert(sql: str, params: tuple = None) -> int:
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"""执行插入SQL，返回自增ID"""
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async with get_connection() as cursor:
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await cursor.execute(sql, params)
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return cursor.lastrowid
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async def execute_update(sql: str, params: tuple = None) -> int:
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"""执行更新SQL，返回影响行数"""
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async with get_connection() as cursor:
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result = await cursor.execute(sql, params)
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return result
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async def execute_many(sql: str, params_list: list) -> int:
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"""批量执行SQL"""
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async with get_connection() as cursor:
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await cursor.executemany(sql, params_list)
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return cursor.rowcount
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async def call_procedure(proc_name: str, args: tuple = None) -> List[Dict[str, Any]]:
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"""调用存储过程"""
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async with get_connection() as cursor:
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if args:
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await cursor.callproc(proc_name, args)
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else:
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await cursor.callproc(proc_name)
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# 获取结果
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result = []
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for result_set in cursor.fetchall():
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if result_set:
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result.extend(result_set)
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return result |