def get_basic_artist(mbid):
"""
Make sure basic artist document is present and contains required data.
@param mbid: a string containing a MusicBrainz ID of an artist
@return: a CachedArtist object containing required minimal data set
"""
#TODO: handle Various Artists' artist (VARIOUS_ARTISTS_ID)
try:
artist = CachedArtist.get(mbid)
mmda_logger('db','present',artist._doc_type, artist.get_id)
except ResourceNotFound:
artist = _create_mb_artist(mbid)
return artist
