169 lines
4.9 KiB
Python
169 lines
4.9 KiB
Python
import logging
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from redis.asyncio import Redis
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from settings import REDIS_URL
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# Set redis logging level to suppress DEBUG messages
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logger = logging.getLogger("redis")
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logger.setLevel(logging.WARNING)
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class RedisService:
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def __init__(self, uri=REDIS_URL):
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self._uri: str = uri
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self.pubsub_channels = []
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self._client = None
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async def connect(self):
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if self._uri:
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self._client = await Redis.from_url(self._uri, decode_responses=True)
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logger.info("Redis connection was established.")
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async def disconnect(self):
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if isinstance(self._client, Redis):
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await self._client.close()
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logger.info("Redis connection was closed.")
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async def execute(self, command, *args, **kwargs):
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if self._client:
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try:
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logger.debug(f"{command}") # {args[0]}") # {args} {kwargs}")
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for arg in args:
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if isinstance(arg, dict):
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if arg.get("_sa_instance_state"):
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del arg["_sa_instance_state"]
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r = await self._client.execute_command(command, *args, **kwargs)
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# logger.debug(type(r))
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# logger.debug(r)
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return r
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except Exception as e:
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logger.error(e)
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def pipeline(self):
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"""
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Возвращает пайплайн Redis для выполнения нескольких команд в одной транзакции.
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Returns:
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Pipeline: объект pipeline Redis
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"""
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if self._client:
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return self._client.pipeline()
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raise Exception("Redis client is not initialized")
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async def subscribe(self, *channels):
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if self._client:
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async with self._client.pubsub() as pubsub:
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for channel in channels:
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await pubsub.subscribe(channel)
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self.pubsub_channels.append(channel)
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async def unsubscribe(self, *channels):
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if not self._client:
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return
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async with self._client.pubsub() as pubsub:
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for channel in channels:
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await pubsub.unsubscribe(channel)
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self.pubsub_channels.remove(channel)
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async def publish(self, channel, data):
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if not self._client:
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return
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await self._client.publish(channel, data)
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async def set(self, key, data, ex=None):
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# Prepare the command arguments
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args = [key, data]
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# If an expiration time is provided, add it to the arguments
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if ex is not None:
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args.append("EX")
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args.append(ex)
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# Execute the command with the provided arguments
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await self.execute("set", *args)
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async def get(self, key):
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return await self.execute("get", key)
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async def delete(self, *keys):
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"""
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Удаляет ключи из Redis.
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Args:
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*keys: Ключи для удаления
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Returns:
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int: Количество удаленных ключей
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"""
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if not self._client or not keys:
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return 0
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return await self._client.delete(*keys)
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async def hmset(self, key, mapping):
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"""
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Устанавливает несколько полей хеша.
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Args:
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key: Ключ хеша
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mapping: Словарь с полями и значениями
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"""
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if not self._client:
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return
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await self._client.hset(key, mapping=mapping)
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async def expire(self, key, seconds):
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"""
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Устанавливает время жизни ключа.
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Args:
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key: Ключ
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seconds: Время жизни в секундах
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"""
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if not self._client:
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return
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await self._client.expire(key, seconds)
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async def sadd(self, key, *values):
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"""
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Добавляет значения в множество.
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Args:
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key: Ключ множества
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*values: Значения для добавления
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"""
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if not self._client:
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return
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await self._client.sadd(key, *values)
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async def srem(self, key, *values):
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"""
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Удаляет значения из множества.
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Args:
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key: Ключ множества
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*values: Значения для удаления
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"""
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if not self._client:
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return
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await self._client.srem(key, *values)
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async def smembers(self, key):
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"""
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Получает все элементы множества.
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Args:
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key: Ключ множества
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Returns:
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set: Множество элементов
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"""
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if not self._client:
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return set()
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return await self._client.smembers(key)
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redis = RedisService()
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__all__ = ["redis"]
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