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47 lines
1.1 KiB
Python
47 lines
1.1 KiB
Python
# -*- coding: utf-8 -*-
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'''
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LevelDB Database Store.
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shove's psuedo-URL for LevelDB stores follows the form:
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leveldb://<path>
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Where <path> is a URL path to a LevelDB database. Alternatively, the native
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pathname to a LevelDB database can be passed as the 'engine' parameter.
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'''
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try:
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import leveldb
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except ImportError:
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raise ImportError('This store requires py-leveldb library')
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from shove.store import ClientStore
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class LevelDBStore(ClientStore):
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'''LevelDB based store'''
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init = 'leveldb://'
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def __init__(self, engine, **kw):
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super(LevelDBStore, self).__init__(engine, **kw)
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self._store = leveldb.LevelDB(self._engine)
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def __getitem__(self, key):
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item = self.loads(self._store.Get(key))
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if item is not None:
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return item
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raise KeyError(key)
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def __setitem__(self, key, value):
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self._store.Put(key, self.dumps(value))
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def __delitem__(self, key):
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self._store.Delete(key)
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def keys(self):
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return list(k for k in self._store.RangeIter(include_value=False))
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__all__ = ['LevelDBStore']
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