69 lines
2.1 KiB
Python
69 lines
2.1 KiB
Python
import json
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import redis.asyncio as aredis
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from settings import REDIS_URL
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class RedisCache:
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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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self._client = aredis.Redis.from_url(self._uri, decode_responses=True)
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async def disconnect(self):
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if self._client:
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await self._client.close()
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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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print("[redis] " + command + " " + " ".join(args))
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r = await self._client.execute_command(command, *args, **kwargs)
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return r
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except Exception as e:
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print(f"[redis] error: {e}")
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return None
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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 listen(self, pattern):
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if self._client:
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pubsub = self._client.pubsub()
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await pubsub.psubscribe(pattern)
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while True:
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message = await pubsub.get_message()
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if message and isinstance(message["data"], (str, bytes, bytearray)):
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print(f"[services.rediscache] msg: {message}")
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try:
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yield json.loads(message["data"]), message.get("channel")
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except Exception as e:
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print(f"[servoces.rediscache] Error: {e}")
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redis = RedisCache()
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__all__ = ["redis"]
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