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@@ -1,4 +1,10 @@
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import oss2,redis
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import time
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import logging
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# 配置日志
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logging.basicConfig(level=logging.INFO)
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logger = logging.getLogger(__name__)
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# 连接oss - 单例模式
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class OSSClientSingleton:
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@@ -29,47 +35,87 @@ class RedisClientSingleton:
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_instance = None
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_client = None
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# Redis连接配置
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REDIS_CONFIG = {
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'host': 'mp.api.suwa3d.com',
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'password': 'kcV2000',
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'port': 6379,
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'db': 6,
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'socket_timeout': 30, # 操作超时30秒
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'socket_connect_timeout': 10, # 连接超时10秒
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'socket_keepalive': True, # 启用 TCP keepalive
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'socket_keepalive_options': {}, # keepalive 选项
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'health_check_interval': 30 # 健康检查间隔30秒
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}
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# 重试配置
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RETRY_INTERVAL = 5 # 重试间隔(秒)
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MAX_RETRY_INTERVAL = 60 # 最大重试间隔(秒),用于指数退避
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def __new__(cls):
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if cls._instance is None:
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cls._instance = super(RedisClientSingleton, cls).__new__(cls)
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return cls._instance
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def _create_redis_client(self):
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"""创建Redis客户端"""
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return redis.Redis(**self.REDIS_CONFIG)
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def _connect_with_retry(self, max_retries=None, retry_interval=None):
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"""
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带重试机制的Redis连接方法
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:param max_retries: 最大重试次数,None表示无限重试
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:param retry_interval: 重试间隔(秒),None表示使用默认值,支持指数退避
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:return: Redis客户端实例
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"""
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if retry_interval is None:
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retry_interval = self.RETRY_INTERVAL
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retry_count = 0
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current_interval = retry_interval
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while True:
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try:
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logger.info(f"尝试连接Redis (第 {retry_count + 1} 次)...")
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client = self._create_redis_client()
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# 测试连接
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client.ping()
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logger.info("Redis连接成功!")
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return client
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except (redis.ConnectionError, redis.TimeoutError, AttributeError, Exception) as e:
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retry_count += 1
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error_msg = str(e)
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logger.warning(f"Redis连接失败 (第 {retry_count} 次): {error_msg}")
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# 如果设置了最大重试次数且已达到,则抛出异常
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if max_retries is not None and retry_count >= max_retries:
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logger.error(f"达到最大重试次数 {max_retries},停止重试")
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raise
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# 指数退避:每次重试间隔逐渐增加,但不超过最大值
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logger.info(f"等待 {current_interval} 秒后重试...")
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time.sleep(current_interval)
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current_interval = min(current_interval * 1.5, self.MAX_RETRY_INTERVAL)
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def get_client(self):
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"""
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获取Redis客户端,如果连接断开则自动重连(带重试机制)
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:return: Redis客户端实例
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"""
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if self._client is None:
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# 添加超时参数,防止连接超时
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# socket_timeout: 每次操作的超时时间(秒)
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# socket_connect_timeout: 连接超时时间(秒)
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# socket_keepalive: 启用 TCP keepalive
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# socket_keepalive_options: keepalive 选项
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self._client = redis.Redis(
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host='mp.api.suwa3d.com',
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password='kcV2000',
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port=6379,
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db=6,
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socket_timeout=30, # 操作超时30秒
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socket_connect_timeout=10, # 连接超时10秒
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socket_keepalive=True, # 启用 TCP keepalive
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socket_keepalive_options={}, # keepalive 选项
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health_check_interval=30 # 健康检查间隔30秒
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)
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# 首次连接,使用无限重试直到成功
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logger.info("初始化Redis连接...")
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self._client = self._connect_with_retry(max_retries=None)
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else:
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# 检查连接是否有效,如果断开则重新连接
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# 检查连接是否有效,如果断开则重新连接(带重试)
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try:
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self._client.ping()
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except (redis.ConnectionError, redis.TimeoutError, AttributeError):
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# 连接断开,重新创建连接
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except (redis.ConnectionError, redis.TimeoutError, AttributeError) as e:
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# 连接断开,重新创建连接(使用无限重试直到成功)
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logger.warning(f"Redis连接已断开: {str(e)},开始重新连接...")
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self._client = None
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self._client = redis.Redis(
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host='mp.api.suwa3d.com',
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password='kcV2000',
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port=6379,
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db=6,
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socket_timeout=30,
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socket_connect_timeout=10,
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socket_keepalive=True,
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socket_keepalive_options={},
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health_check_interval=30
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)
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self._client = self._connect_with_retry(max_retries=None)
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return self._client
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