11

core/async_mysql.py

@@ -0,0 +1,90 @@
+import aiomysql
+
+
+class AsyncMySQL:
+    def __init__(self, db_config: dict):
+        self.db_config = db_config
+        self.pool = None
+
+    async def init_pool(self):
+        """初始化连接池"""
+        if self.pool is None:
+            self.pool = await aiomysql.create_pool(**self.db_config)
+
+    async def close_pool(self):
+        """关闭连接池"""
+        if self.pool:
+            self.pool.close()
+            await self.pool.wait_closed()
+            self.pool = None
+
+    async def fetch_one(self, sql: str, params=None):
+        """查询单条数据"""
+        await self.init_pool()
+        async with self.pool.acquire() as conn: # type: ignore
+            async with conn.cursor(aiomysql.DictCursor) as cursor:
+                await cursor.execute(sql, params or ())
+                return await cursor.fetchone()
+
+    async def fetch_all(self, sql: str, params=None):
+        """查询多条数据"""
+        await self.init_pool()
+        async with self.pool.acquire() as conn: # type: ignore
+            async with conn.cursor(aiomysql.DictCursor) as cursor:
+                await cursor.execute(sql, params or ())
+                return await cursor.fetchall()
+
+    async def execute(self, sql: str, params=None):
+        """执行 SQL（insert/update/delete）"""
+        await self.init_pool()
+        async with self.pool.acquire() as conn: # type: ignore
+            async with conn.cursor() as cursor:
+                await cursor.execute(sql, params or ())
+                await conn.commit()
+                return cursor.rowcount
+
+    async def executemany(self, sql: str, params_list):
+        """批量执行 SQL"""
+        await self.init_pool()
+        async with self.pool.acquire() as conn: # type: ignore
+            async with conn.cursor() as cursor:
+                await cursor.executemany(sql, params_list)
+                await conn.commit()
+                return cursor.rowcount
+
+    async def truncate_table(self, table_name: str):
+        """清空指定表"""
+        await self.init_pool()
+        async with self.pool.acquire() as conn: # type: ignore
+            async with conn.cursor() as cursor:
+                sql = f"TRUNCATE TABLE `{table_name}`"
+                await cursor.execute(sql)
+                await conn.commit()
+                return True
+
+    # ----------------------------------------------------------------------
+    # 新增：自动生成 SQL 的增删改功能
+    # ----------------------------------------------------------------------
+
+    async def insert_record(self, table: str, data: dict):
+        """插入记录：data 是 dict"""
+        keys = ", ".join(f"`{k}`" for k in data.keys())
+        placeholders = ", ".join(["%s"] * len(data))
+        sql = f"INSERT INTO `{table}` ({keys}) VALUES ({placeholders})"
+        return await self.execute(sql, tuple(data.values()))
+
+    async def update_record(self, table: str, data: dict, where: dict):
+        """更新记录：data、where 都是 dict"""
+        set_clause = ", ".join(f"`{k}`=%s" for k in data.keys())
+        where_clause = " AND ".join(f"`{k}`=%s" for k in where.keys())
+
+        sql = f"UPDATE `{table}` SET {set_clause} WHERE {where_clause}"
+
+        params = tuple(data.values()) + tuple(where.values())
+        return await self.execute(sql, params)
+
+    async def delete_record(self, table: str, where: dict):
+        """删除记录：where 是 dict"""
+        where_clause = " AND ".join(f"`{k}`=%s" for k in where.keys())
+        sql = f"DELETE FROM `{table}` WHERE {where_clause}"
+        return await self.execute(sql, tuple(where.values()))