class NodeStorage(Storage):
_songClass = Song
def __init__(self, config):
self.db = HubDB(config)
self._config = config
self._logger = logging.getLogger('radiocrepe.storage')
def initialize(self):
NodeSideBase.metadata.create_all(self.db.engine)
def _file_metadata(self, mtype, fpath):
return MIME_TYPES[mtype](fpath)
@property
def last_sent(self):
"""
The last time a record was sent to the server
"""
res = self.db.query(Info.last_sent).scalar()
if res:
return res
else:
return None
@last_sent.setter
def last_sent(self, value):
info = self.db.query(Info).first()
if info:
info.last_sent = value
else:
self.db.add(Info(last_sent=value))
self.db.commit()
def new_records(self):
last_sent = self.last_sent or 0
for obj in self.db.query(self._songClass).\
filter(self._songClass.timestamp > last_sent):
song = obj.dict(private=True)
# no need for remote host to know this
del song['fpath']
yield song
def file(self, uid):
meta = self.get(uid, private=True)
return open(os.path.join(self._config['content_dir'], meta['fpath']))
def update(self):
mtypes = self._config.get('allowed_mime_types', '')
if mtypes:
allowed_mtypes = mtypes.split(',')
else:
allowed_mtypes = MIME_TYPES.keys()
self._logger.info('Updating DB')
cdir = self._config['content_dir']
for dirpath, dirnames, filenames in os.walk(cdir):
for fname in filenames:
mime = magic.Magic(mime=True)
fpath = os.path.join(dirpath, fname)
mtype = mime.from_file(fpath.encode('utf-8'))
if mtype in allowed_mtypes:
meta = self._file_metadata(mtype, fpath)
if meta:
meta.update({
'mime': mtype,
'fpath': os.path.relpath(fpath, cdir),
'uid': self._hash(meta)
})
self._index(**meta)
self._logger.info('DB update finished')
def __init__(self, config):
self.db = HubDB(config)
self._config = config
self._logger = logging.getLogger('radiocrepe.storage')
