mirror of
https://github.com/moparisthebest/SickRage
synced 2024-11-14 13:25:11 -05:00
92 lines
2.8 KiB
Python
92 lines
2.8 KiB
Python
# -*- coding: utf-8 -*-
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'''
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S3-accessed stores
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shove's psuedo-URL for stores found on Amazon.com's S3 web service follows this
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form:
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s3://<s3_key>:<s3_secret>@<bucket>
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<s3_key> is the Access Key issued by Amazon
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<s3_secret> is the Secret Access Key issued by Amazon
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<bucket> is the name of the bucket accessed through the S3 service
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'''
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try:
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from boto.s3.connection import S3Connection
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from boto.s3.key import Key
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except ImportError:
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raise ImportError('Requires boto library')
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from shove import BaseStore
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class S3Store(BaseStore):
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def __init__(self, engine=None, **kw):
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super(S3Store, self).__init__(engine, **kw)
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# key = Access Key, secret=Secret Access Key, bucket=bucket name
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key, secret, bucket = kw.get('key'), kw.get('secret'), kw.get('bucket')
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if engine is not None:
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auth, bucket = engine.split('://')[1].split('@')
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key, secret = auth.split(':')
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# kw 'secure' = (True or False, use HTTPS)
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self._conn = S3Connection(key, secret, kw.get('secure', False))
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buckets = self._conn.get_all_buckets()
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# Use bucket if it exists
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for b in buckets:
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if b.name == bucket:
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self._store = b
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break
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# Create bucket if it doesn't exist
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else:
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self._store = self._conn.create_bucket(bucket)
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# Set bucket permission ('private', 'public-read',
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# 'public-read-write', 'authenticated-read'
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self._store.set_acl(kw.get('acl', 'private'))
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# Updated flag used for avoiding network calls
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self._updated, self._keys = True, None
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def __getitem__(self, key):
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rkey = self._store.lookup(key)
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if rkey is None:
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raise KeyError(key)
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# Fetch string
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value = self.loads(rkey.get_contents_as_string())
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# Flag that the store has not been updated
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self._updated = False
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return value
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def __setitem__(self, key, value):
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rkey = Key(self._store)
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rkey.key = key
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rkey.set_contents_from_string(self.dumps(value))
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# Flag that the store has been updated
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self._updated = True
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def __delitem__(self, key):
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try:
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self._store.delete_key(key)
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# Flag that the store has been updated
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self._updated = True
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except:
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raise KeyError(key)
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def keys(self):
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'''Returns a list of keys in the store.'''
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return list(i[0] for i in self.items())
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def items(self):
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'''Returns a list of items from the store.'''
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if self._updated or self._keys is None:
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self._keys = self._store.get_all_keys()
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return list((str(k.key), k) for k in self._keys)
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def iteritems(self):
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'''Lazily returns items from the store.'''
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for k in self.items():
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yield (k.key, k)
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__all__ = ['S3Store']
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