mirror of
https://github.com/Hopiu/django-rosetta.git
synced 2026-03-17 05:40:26 +00:00
86 lines
2.4 KiB
Python
86 lines
2.4 KiB
Python
from django.core.cache import cache
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from django.utils import importlib
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import hashlib
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import time
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class BaseRosettaStorage(object):
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def __init__(self, request):
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self.request = request
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def get(self, key, default=None):
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raise NotImplementedError
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def set(self, key, val):
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raise NotImplementedError
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def has(self, key):
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raise NotImplementedError
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def delete(self, key):
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raise NotImplementedError
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class DummyRosettaStorage(BaseRosettaStorage):
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def get(self, key, default=None):
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return default
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def set(self, key, val):
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pass
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def has(self, key):
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return False
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def delete(self, key):
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pass
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class SessionRosettaStorage(BaseRosettaStorage):
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def get(self, key, default=None):
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if key in self.request.session:
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return self.request.session[key]
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return default
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def set(self, key, val):
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self.request.session[key] = val
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def has(self, key):
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return key in self.request.session
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def delete(self, key):
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del(self.request.session[key])
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class CacheRosettaStorage(BaseRosettaStorage):
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# unlike the session storage backend, cache is shared among all users
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# so we need to per-user key prefix, which we store in the session
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def __init__(self, request):
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super(CacheRosettaStorage, self).__init__(request)
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if 'rosetta_cache_storage_key_prefix' in self.request.session:
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self._key_prefix = self.request.session['rosetta_cache_storage_key_prefix']
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else:
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self._key_prefix = hashlib.new('sha1', str(time.time())).hexdigest()
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self.request.session['rosetta_cache_storage_key_prefix'] = self._key_prefix
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def get(self, key, default=None):
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#print ('get', self._key_prefix + key)
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return cache.get(self._key_prefix + key, default)
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def set(self, key, val):
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#print ('set', self._key_prefix + key)
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cache.set(self._key_prefix + key, val)
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def has(self, key):
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#print ('has', self._key_prefix + key)
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return (self._key_prefix + key) in cache
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def delete(self, key):
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#print ('del', self._key_prefix + key)
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cache.delete(self._key_prefix + key)
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def get_storage(request):
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from rosetta.conf import settings
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storage_module, storage_class = settings.STORAGE_CLASS.rsplit('.', 1)
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storage_module = importlib.import_module(storage_module)
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return getattr(storage_module, storage_class)(request)
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