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
@param mbid: a string containing a MusicBrainz ID of an artist
@return: a CachedArtist object with basic MusicBrainz data
"""
try:
t = mmda_logger('mb','request','artist',mbid)
mb_artist = mb_query.getArtistById(mbid, MB_ARTIST_INCLUDES)
mmda_logger('mb','result', 'artist',mb_artist.name,t)
except WebServiceError, e:
# TODO: hard error page here
# TODO: 404 not found redirect to different page? conditional?
# TODO: HTTP Error 503: Service Temporarily Unavailable -> special case: please wait few seconds and hit F5
mmda_logger('mb-artist','ERROR',e)
raise e
else:
artist = CachedArtist.get_or_create(mbid)
artist = _populate_artist_mb(artist, mb_artist)
artist.cache_state['mb'] = [1,datetime.utcnow()]
artist.save()
mmda_logger('db','store',artist)
# since we have some basic release data fetched with artist, store it
_create_shallow_releases_mb(mb_artist)
# TODO: think about genres and origin - fetch from freebase(?)
# freebase.mqlread({"type":"/music/artist", "limit": 1, "key": [{"namespace" : '/authority/musicbrainz',"value" : '579ef111-19dd-4ae8-ad50-d5fa435472b9'}], "genre":[], "origin":None} )
return artist
def _populate_artist_mb(artist, mb_artist):
"""
Process data from MusicBrainz and store it in dedicated structures of CachedArtist.
