def _connect(self, **kwargs):
result = super(FileStorage, self)._connect(**kwargs)
if result:
self.gridfs = GridFs(
database=self._database, collection=self.get_table())
return result
class MongoFileStorage(MongoStorage, FileStorage):
FILENAME = 'filename'
def _connect(self, **kwargs):
result = super(FileStorage, self)._connect(**kwargs)
if result:
self.gridfs = GridFs(
database=self._database, collection=self.get_table())
return result
def get(self, names, version=-1):
names = ensure_iterable(names)
result = []
for name in names:
gridout = self.gridfs.get_version(filename=name, version=version)
fs = MongoFileStream(gridout)
result.append(fs)
return result
def exists(self, name):
result = self.gridfs.exists(name)
return result
def find(self, names=None, meta=None, sort=None, limit=-1, skip=0):
request = {}
if names is not None:
if isinstance(names, basestring):
request[MongoFileStorage.FILENAME] = names
else:
request[MongoFileStorage.FILENAME] = {'$in': names}
if meta is not None:
request.update(meta)
cursor = self.gridfs.find(request)
if sort is not None:
cursor.sort(sort)
if limit > 0:
cursor.limit(limit)
if skip > 0:
cursor.skip(skip)
result = (MongoFileStream(gridout) for gridout in cursor)
return result
def new_file(self, name=None, meta=None, data=None):
kwargs = {}
if name is None:
name = str(uuid())
kwargs['_id'] = name
kwargs['filename'] = name
if meta is not None:
kwargs['metadata'] = meta
gridout = self.gridfs.new_file(**kwargs)
result = MongoFileStream(gridout)
if data is not None:
result.write(data)
return result
def delete(self, names):
names = ensure_iterable(names)
for name in names:
self.gridfs.delete(file_id=name)