Files
romm/backend/handler/redis_handler.py
2024-01-12 23:44:27 +01:00

67 lines
1.7 KiB
Python

from enum import Enum
from config import ENABLE_EXPERIMENTAL_REDIS, REDIS_HOST, REDIS_PASSWORD, REDIS_PORT
from logger.logger import log
from redis import Redis
from rq import Queue
class QueuePrio(Enum):
HIGH = "high"
DEFAULT = "default"
LOW = "low"
class FallbackCache:
def __init__(self) -> None:
self.fallback: dict = {}
def get(self, key: str, *args, **kwargs) -> str:
return self.fallback.get(key, "")
def set(self, key: str, value: str, *args, **kwargs) -> None:
self.fallback[key] = value
def delete(self, key: str, *args, **kwargs) -> None:
self.fallback.pop(key, None)
def exists(self, key: str, *args, **kwargs) -> bool:
return key in self.fallback
def flushall(self) -> None:
self.fallback = {}
def __repr__(self) -> str:
return f"<FallbackCache {self.fallback}>"
def __str__(self) -> str:
return repr(self)
redis_client = Redis(
host=REDIS_HOST, port=int(REDIS_PORT), password=REDIS_PASSWORD, db=0
)
redis_url = (
f"redis://:{REDIS_PASSWORD}@{REDIS_HOST}:{REDIS_PORT}"
if REDIS_PASSWORD
else f"redis://{REDIS_HOST}:{REDIS_PORT}"
)
high_prio_queue = Queue(name=QueuePrio.HIGH.name, connection=redis_client)
default_queue = Queue(name=QueuePrio.DEFAULT.name, connection=redis_client)
low_prio_queue = Queue(name=QueuePrio.LOW.name, connection=redis_client)
# A seperate client that auto-decodes responses is needed
_cache_client = Redis(
host=REDIS_HOST,
port=int(REDIS_PORT),
password=REDIS_PASSWORD,
db=0,
decode_responses=True,
)
_fallback_cache = FallbackCache()
if ENABLE_EXPERIMENTAL_REDIS:
log.info("Redis enabled: Connecting...")
cache = _cache_client if ENABLE_EXPERIMENTAL_REDIS else _fallback_cache