mirror of
https://github.com/snailyp/gemini-balance.git
synced 2026-05-13 05:29:44 +08:00
72 lines
2.7 KiB
Python
72 lines
2.7 KiB
Python
"""
|
||
数据库连接池模块
|
||
"""
|
||
from pathlib import Path
|
||
from urllib.parse import quote_plus
|
||
from databases import Database
|
||
from sqlalchemy import create_engine, MetaData
|
||
from sqlalchemy.ext.declarative import declarative_base
|
||
|
||
from app.config.config import settings
|
||
from app.log.logger import get_database_logger
|
||
|
||
logger = get_database_logger()
|
||
|
||
# 数据库URL
|
||
if settings.DATABASE_TYPE == "sqlite":
|
||
# 确保 data 目录存在
|
||
data_dir = Path("data")
|
||
data_dir.mkdir(exist_ok=True)
|
||
db_path = data_dir / settings.SQLITE_DATABASE
|
||
DATABASE_URL = f"sqlite:///{db_path}"
|
||
elif settings.DATABASE_TYPE == "mysql":
|
||
if settings.MYSQL_SOCKET:
|
||
DATABASE_URL = f"mysql+pymysql://{settings.MYSQL_USER}:{quote_plus(settings.MYSQL_PASSWORD)}@/{settings.MYSQL_DATABASE}?unix_socket={settings.MYSQL_SOCKET}"
|
||
else:
|
||
DATABASE_URL = f"mysql+pymysql://{settings.MYSQL_USER}:{quote_plus(settings.MYSQL_PASSWORD)}@{settings.MYSQL_HOST}:{settings.MYSQL_PORT}/{settings.MYSQL_DATABASE}"
|
||
else:
|
||
raise ValueError("Unsupported database type. Please set DATABASE_TYPE to 'sqlite' or 'mysql'.")
|
||
|
||
# 创建数据库引擎
|
||
# pool_pre_ping=True: 在从连接池获取连接前执行简单的 "ping" 测试，确保连接有效
|
||
engine = create_engine(DATABASE_URL, pool_pre_ping=True)
|
||
|
||
# 创建元数据对象
|
||
metadata = MetaData()
|
||
|
||
# 创建基类
|
||
Base = declarative_base(metadata=metadata)
|
||
|
||
# 创建数据库连接池，并配置连接池参数，在sqlite中不使用连接池
|
||
# min_size/max_size: 连接池的最小/最大连接数
|
||
# pool_recycle=3600: 连接在池中允许存在的最大秒数（生命周期）。
|
||
# 设置为 3600 秒（1小时），确保在 MySQL 默认的 wait_timeout (通常8小时) 或其他网络超时之前回收连接。
|
||
# 如果遇到连接失效问题，可以尝试调低此值，使其小于实际的 wait_timeout 或网络超时时间。
|
||
# databases 库会自动处理连接失效后的重连尝试。
|
||
if settings.DATABASE_TYPE == "sqlite":
|
||
database = Database(DATABASE_URL)
|
||
else:
|
||
database = Database(DATABASE_URL, min_size=5, max_size=20, pool_recycle=1800)
|
||
|
||
async def connect_to_db():
|
||
"""
|
||
连接到数据库
|
||
"""
|
||
try:
|
||
await database.connect()
|
||
logger.info(f"Connected to {settings.DATABASE_TYPE}")
|
||
except Exception as e:
|
||
logger.error(f"Failed to connect to database: {str(e)}")
|
||
raise
|
||
|
||
|
||
async def disconnect_from_db():
|
||
"""
|
||
断开数据库连接
|
||
"""
|
||
try:
|
||
await database.disconnect()
|
||
logger.info(f"Disconnected from {settings.DATABASE_TYPE}")
|
||
except Exception as e:
|
||
logger.error(f"Failed to disconnect from database: {str(e)}")
|