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from django.conf import settings |
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from django.utils.module_loading import import_string |
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SUPPORTED_DATABASE_ENGINES = { |
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'django.db.backends.sqlite3', |
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'django.db.backends.postgresql', |
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'django.db.backends.mysql', |
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# TODO: Remove when we drop Django 1.8 support. |
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'django.db.backends.postgresql_psycopg2', |
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# GeoDjango |
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'django.contrib.gis.db.backends.spatialite', |
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'django.contrib.gis.db.backends.postgis', |
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'django.contrib.gis.db.backends.mysql', |
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# django-transaction-hooks |
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'transaction_hooks.backends.sqlite3', |
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'transaction_hooks.backends.postgis', |
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'transaction_hooks.backends.postgresql_psycopg2', |
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'transaction_hooks.backends.mysql', |
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} |
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SUPPORTED_CACHE_BACKENDS = { |
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'django.core.cache.backends.dummy.DummyCache', |
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'django.core.cache.backends.locmem.LocMemCache', |
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'django.core.cache.backends.filebased.FileBasedCache', |
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'django_redis.cache.RedisCache', |
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'django.core.cache.backends.memcached.MemcachedCache', |
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'django.core.cache.backends.memcached.PyLibMCCache', |
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} |
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SUPPORTED_ONLY = 'supported_only' |
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ITERABLES = {tuple, list, frozenset, set} |
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class Settings(object): |
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patched = False |
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converters = {} |
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CACHALOT_ENABLED = True |
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CACHALOT_CACHE = 'default' |
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CACHALOT_DATABASES = 'supported_only' |
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CACHALOT_TIMEOUT = None |
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CACHALOT_CACHE_RANDOM = False |
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CACHALOT_INVALIDATE_RAW = True |
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CACHALOT_ONLY_CACHABLE_TABLES = () |
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CACHALOT_UNCACHABLE_TABLES = ('django_migrations',) |
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CACHALOT_QUERY_KEYGEN = 'cachalot.utils.get_query_cache_key' |
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CACHALOT_TABLE_KEYGEN = 'cachalot.utils.get_table_cache_key' |
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@classmethod |
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def add_converter(cls, setting): |
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def inner(func): |
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cls.converters[setting] = func |
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return inner |
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@classmethod |
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def get_names(cls): |
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return {name for name in cls.__dict__ |
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if name[:2] != '__' and name.isupper()} |
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def load(self): |
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for name in self.get_names(): |
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value = getattr(settings, name, getattr(self.__class__, name)) |
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converter = self.converters.get(name) |
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if converter is not None: |
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value = converter(value) |
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setattr(self, name, value) |
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if not self.patched: |
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from .monkey_patch import patch |
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patch() |
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self.patched = True |
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def unload(self): |
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if self.patched: |
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from .monkey_patch import unpatch |
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unpatch() |
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self.patched = False |
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def reload(self): |
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self.unload() |
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self.load() |
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@Settings.add_converter('CACHALOT_DATABASES') |
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def convert(value): |
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if value == SUPPORTED_ONLY: |
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value = {alias for alias, setting in settings.DATABASES.items() |
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if setting['ENGINE'] in SUPPORTED_DATABASE_ENGINES} |
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if value.__class__ in ITERABLES: |
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return frozenset(value) |
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return value |
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@Settings.add_converter('CACHALOT_ONLY_CACHABLE_TABLES') |
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def convert(value): |
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return frozenset(value) |
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@Settings.add_converter('CACHALOT_UNCACHABLE_TABLES') |
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def convert(value): |
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return frozenset(value) |
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@Settings.add_converter('CACHALOT_QUERY_KEYGEN') |
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def convert(value): |
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return import_string(value) |
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@Settings.add_converter('CACHALOT_TABLE_KEYGEN') |
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def convert(value): |
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return import_string(value) |
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cachalot_settings = Settings() |
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noripyt /
django-cachalot
