143 lines
4.6 KiB
Python
143 lines
4.6 KiB
Python
|
|
from loguru import logger
|
|
import mysql.connector
|
|
import redis
|
|
|
|
class DBConnectionManager:
|
|
"""数据库连接管理器，负责管理MySQL和Redis连接池"""
|
|
|
|
_instance = None
|
|
|
|
@classmethod
|
|
def get_instance(cls, mysql_config=None, redis_config=None):
|
|
"""获取单例实例
|
|
|
|
Args:
|
|
mysql_config: MySQL配置
|
|
redis_config: Redis配置
|
|
|
|
Returns:
|
|
DBConnectionManager实例
|
|
"""
|
|
if cls._instance is None:
|
|
cls._instance = cls(mysql_config, redis_config)
|
|
elif mysql_config or redis_config:
|
|
# 如果已经有实例但又传入了配置，则更新配置
|
|
if mysql_config and not cls._instance.mysql_pool:
|
|
cls._instance.init_mysql_pool(mysql_config)
|
|
if redis_config and not cls._instance.redis_pool:
|
|
cls._instance.init_redis_pool(redis_config)
|
|
return cls._instance
|
|
|
|
def __init__(self, mysql_config=None, redis_config=None):
|
|
"""初始化数据库连接管理器
|
|
|
|
Args:
|
|
mysql_config: MySQL配置
|
|
redis_config: Redis配置
|
|
"""
|
|
self.LOG = logger
|
|
self.mysql_pool = None
|
|
self.redis_pool = None
|
|
|
|
# 初始化MySQL连接池
|
|
if mysql_config:
|
|
self.init_mysql_pool(mysql_config)
|
|
|
|
# 初始化Redis连接池
|
|
if redis_config:
|
|
self.init_redis_pool(redis_config)
|
|
|
|
def init_mysql_pool(self, config):
|
|
"""初始化MySQL连接池
|
|
|
|
Args:
|
|
config: MySQL配置，包含host, port, user, password, database等
|
|
"""
|
|
try:
|
|
if not config:
|
|
self.LOG.warning("MySQL配置为空，跳过初始化")
|
|
return
|
|
|
|
# 准备连接池配置
|
|
pool_config = {
|
|
'pool_name': 'wechat_robot_pool',
|
|
'pool_size': 10, # 连接池大小
|
|
'host': config.get('host', 'localhost'),
|
|
'port': config.get('port', 3306),
|
|
'user': config.get('user', 'root'),
|
|
'password': config.get('password', ''),
|
|
'database': config.get('database', ''),
|
|
'charset': config.get('charset', 'utf8mb4'),
|
|
'use_pure': True, # 使用纯Python实现
|
|
'autocommit': True
|
|
}
|
|
|
|
# 创建连接池
|
|
self.mysql_pool = mysql.connector.pooling.MySQLConnectionPool(**pool_config)
|
|
self.LOG.info("MySQL连接池初始化成功")
|
|
except Exception as e:
|
|
self.LOG.error(f"MySQL连接池初始化失败: {e}")
|
|
self.mysql_pool = None
|
|
|
|
def init_redis_pool(self, config):
|
|
"""初始化Redis连接池
|
|
|
|
Args:
|
|
config: Redis配置，包含host, port, password, db等
|
|
"""
|
|
try:
|
|
if not config:
|
|
self.LOG.warning("Redis配置为空，跳过初始化")
|
|
return
|
|
|
|
self.redis_pool = redis.ConnectionPool(
|
|
host=config.get('host', 'localhost'),
|
|
port=config.get('port', 6379),
|
|
password=config.get('password', None),
|
|
db=config.get('db', 0),
|
|
decode_responses=config.get('decode_responses', True),
|
|
max_connections=config.get('max_connections', 10)
|
|
)
|
|
self.LOG.info("Redis连接池初始化成功")
|
|
except Exception as e:
|
|
self.LOG.error(f"Redis连接池初始化失败: {e}")
|
|
self.redis_pool = None
|
|
|
|
def get_mysql_connection(self):
|
|
"""获取MySQL连接
|
|
|
|
Returns:
|
|
MySQL连接
|
|
|
|
Raises:
|
|
Exception: MySQL连接池未初始化
|
|
"""
|
|
if self.mysql_pool is None:
|
|
raise Exception("MySQL连接池未初始化")
|
|
|
|
return self.mysql_pool.get_connection()
|
|
|
|
def get_redis_connection(self):
|
|
"""获取Redis连接
|
|
|
|
Returns:
|
|
Redis连接
|
|
|
|
Raises:
|
|
Exception: Redis连接池未初始化
|
|
"""
|
|
if self.redis_pool is None:
|
|
raise Exception("Redis连接池未初始化")
|
|
|
|
return redis.Redis(connection_pool=self.redis_pool)
|
|
|
|
def close(self):
|
|
"""关闭所有连接池"""
|
|
# MySQL连接池会自动管理连接的关闭
|
|
self.mysql_pool = None
|
|
|
|
# 关闭Redis连接池
|
|
if self.redis_pool:
|
|
self.redis_pool.disconnect()
|
|
self.redis_pool = None |