97 lines
3.0 KiB
Python
97 lines
3.0 KiB
Python
import redis
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import json
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import logging
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from app.core.config import settings
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from typing import List, Dict, Any, Optional
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class RedisClient:
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"""Redis 客户端"""
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_instance = None
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def __new__(cls):
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if cls._instance is None:
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cls._instance = super(RedisClient, cls).__new__(cls)
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try:
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cls._instance.client = redis.Redis(
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host=settings.REDIS_HOST,
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port=settings.REDIS_PORT,
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db=settings.REDIS_DB,
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password=settings.REDIS_PASSWORD,
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decode_responses=True # 自动解码为字符串
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)
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# 测试连接
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cls._instance.client.ping()
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logging.info("Redis 连接成功")
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except Exception as e:
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logging.error(f"Redis 连接失败: {str(e)}")
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cls._instance.client = None
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return cls._instance
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def get_client(self) -> redis.Redis:
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"""获取 Redis 客户端"""
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return self.client
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def push_order_to_queue(self, community_id: int, order_id: str) -> bool:
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"""
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添加新订单到社区队列
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Args:
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community_id: 社区ID
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order_id: 订单ID
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Returns:
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bool: 是否添加成功
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"""
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try:
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key = f"community:{community_id}:new_orders"
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# 使用 LPUSH 将订单ID添加到列表头部
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self.client.lpush(key, order_id)
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# 设置过期时间为24小时
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self.client.expire(key, 86400)
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return True
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except Exception as e:
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logging.error(f"添加新订单到队列失败: {str(e)}")
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return False
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def get_orders_from_queue(self, community_id: int, count: int = 10) -> List[str]:
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"""
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获取社区新订单列表
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Args:
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community_id: 社区ID
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count: 获取数量，默认10个
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Returns:
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List[str]: 订单ID列表
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"""
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try:
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key = f"community:{community_id}:new_orders"
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# 获取订单列表，并不移除
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orders = self.client.lrange(key, 0, count-1)
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return orders
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except Exception as e:
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logging.error(f"获取社区新订单列表失败: {str(e)}")
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return []
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def remove_orders(self, community_id: int) -> bool:
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"""
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从社区队列中移除订单
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Args:
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community_id: 社区ID
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Returns:
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bool: 是否移除成功
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"""
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try:
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key = f"community:{community_id}:new_orders"
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# 使用 ltrim 移除队列中的所有元素
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self.client.ltrim(key, 0, -1)
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return True
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except Exception as e:
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logging.error(f"从队列中移除订单失败: {str(e)}")
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return False
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# 创建全局实例
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redis_client = RedisClient() |