52 lines
1.6 KiB
Python
52 lines
1.6 KiB
Python
from django.core.files.storage import Storage
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class MultiStorage(Storage):
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''' Django storage class that proxies multiple storage classes.
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Uses a name prefix to determine store e.g. 'images:foo/bar.jpg'
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'''
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def __init__(self, config=None):
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self.config = config or getattr(settings, 'BRING_YOUR_OWN_STORAGE', {})
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self._cache = {}
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def get_storage(self, name):
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if name not in self._cache:
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config = self.config[name]
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self._cache[name] = get_storage_class(config['storage'])(**config['settings'])
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return self._cache[name]
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def split(self, name):
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return name.split(":", 1)
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def _open(self, name, mode='rb'):
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storage, p = self.split(name)
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return self.get_storage(storage)._open(p, mode)
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def _proxy(self, method, name, *args, **kwargs):
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storage, p = self.split(name)
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sname = getattr(self.get_storage(storage), method)(name, *args, **kwargs)
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if sname is not None:
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return f"{storage}:{sname}"
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def _save(self, name, content, max_length=None):
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return self._proxy('save', name, content, max_length)
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class BYOStorage(MultiStorage):
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''' Database driven Bring-Your-Own-Storage
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Multiple storages can
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'''
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def get_storage(self, name):
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if name not in self._cache:
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# use storage from config by default
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if name in self.config:
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return super(BYOStorage, self).get_storage(name)
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from .models import UserStorage
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obj = UserStorage.objects.get(name=name)
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self._cache[name] = obj.instance()
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return self._cache[name] |