Added CACHES to ellar Config

Author: eadwinCode

ellar/core/conf/app_settings_models.py

@@ -13,6 +13,7 @@
 
 from .mixins import (
     ConfigDefaultTypesMixin,
+    TBaseCacheBackend,
     TEventHandler,
     TExceptionHandler,
     TMiddleware,
@@ -120,6 +121,7 @@ class Config:
     TEMPLATE_GLOBAL_FILTERS: t.Dict[str, t.Callable[..., t.Any]] = {}
 
     LOGGING: t.Optional[t.Dict[str, t.Any]] = None
+    CACHES: t.Dict[str, TBaseCacheBackend] = {}
 
     @validator("MIDDLEWARE", pre=True)
     def pre_middleware_validate(cls, value: t.Any) -> t.Any:
@@ -137,3 +139,9 @@ def serializer_custom_encoder(cls, value: t.Any) -> t.Any:
     def pre_static_mount_path(cls, value: t.Any) -> t.Any:
         assert value.startswith("/"), "Routed paths must start with '/'"
         return value
+
+    @validator("CACHES", pre=True)
+    def pre_cache_validate(cls, value: t.Dict) -> t.Any:
+        if value and not value.get("default"):
+            raise ValueError("CACHES configuration must have a 'default' key")
+        return value

ellar/core/conf/mixins.py

@@ -4,6 +4,7 @@
 from starlette.responses import JSONResponse
 from starlette.types import ASGIApp
 
+from ellar.cache.model import BaseCacheBackend
 from ellar.constants import LOG_LEVELS as log_levels
 from ellar.core.events import EventHandler
 from ellar.core.exceptions.interfaces import IExceptionHandler
@@ -19,9 +20,25 @@
     "TMiddleware",
     "TEventHandler",
     "TExceptionHandler",
+    "TBaseCacheBackend",
 ]
 
 
+class TBaseCacheBackend:
+    @classmethod
+    def __get_validators__(
+        cls: t.Type["TBaseCacheBackend"],
+    ) -> t.Iterable[t.Callable[..., t.Any]]:
+        yield cls.validate
+
+    @classmethod
+    def validate(cls: t.Type["TBaseCacheBackend"], v: t.Any) -> t.Any:
+        if isinstance(v, BaseCacheBackend):
+            return v
+
+        raise ValueError(f"Expected BaseCacheBackend, received: {type(v)}")
+
+
 class TExceptionHandler:
     @classmethod
     def __get_validators__(
@@ -162,3 +179,5 @@ class ConfigDefaultTypesMixin:
     # TrustHostMiddleware setup
     ALLOWED_HOSTS: t.List[str]
     REDIRECT_HOST: bool
+
+    CACHES: t.Dict[str, TBaseCacheBackend]