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File size: 2,548 Bytes
2b7b752 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 | from threading import Lock
from src.cache.cache_metrics import CacheMetrics
from src.cache.cache_strategies import RedisCache, LocalCache
from src.utils.logging import get_logger
from src.config import config
logger = get_logger("cache ")
class Cache:
_instance = None
_settings = None
_lock = Lock()
_cache_metrics = None
@staticmethod
def configure(mode: str, cache: bool):
logger.info(f"Cache configured with parameters: mode={mode}, cache={cache}")
config.cache.ENABLED = cache
Cache._settings = {
"mode": mode,
"enabled": cache
}
@staticmethod
def get_cache():
if Cache._instance is not None:
return Cache._instance
with Cache._lock:
if Cache._instance is not None:
return Cache._instance
settings = Cache._settings or {"mode": 'local', "enabled": True}
if not settings.get("enabled", True):
Cache._instance = None
return None
if Cache._cache_metrics is None:
Cache._cache_metrics = CacheMetrics()
mode = settings.get("mode", 'local')
if mode == 'cloud':
cache_obj = RedisCache(
host=config.cache.CLOUD_HOST,
port=config.cache.CLOUD_PORT,
password=config.cache.CLOUD_PASS,
mode=mode,
metrics=Cache._cache_metrics
)
elif mode == 'local':
cache_obj = RedisCache(
host=config.cache.LOCAL_HOST,
port=config.cache.LOCAL_PORT,
password=config.cache.LOCAL_PASS,
mode=mode,
metrics=Cache._cache_metrics
)
elif mode == 'dict':
Cache._instance = LocalCache(metrics=Cache._cache_metrics)
return Cache._instance
else:
logger.error("FALLBACK to dict cache. Unknown cache mode")
Cache._instance = LocalCache(metrics=Cache._cache_metrics)
return Cache._instance
if cache_obj.client is None:
logger.error("FALLBACK to dict cache. Redis connection failed")
Cache._instance = LocalCache(metrics=Cache._cache_metrics)
else:
Cache._instance = cache_obj
return Cache._instance
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