def get_basic_artist_pictures(mbid):
"""
Make sure document and its dependencies are present and contain required data.
@param mbid: a string containing a MusicBrainz ID of an artist
@return: a CachedArtistPictures object containing minimal data set
"""
try:
artist_pictures = CachedArtistPictures.get(mbid)
if 'artist_name' not in artist_pictures:
raise ResourceNotFound
mmda_logger('db','present',artist_pictures._doc_type, artist_pictures.get_id)
except ResourceNotFound:
# overhead, but in most cases artist page
# is a place where user will go next anyway
artist_pictures = CachedArtistPictures.get_or_create(mbid)
artist = get_basic_artist(mbid)
artist_pictures.artist_name = artist.name
if 'aliases' in artist:
artist_pictures.artist_aliases = list(artist.aliases)
artist_pictures.save()
mmda_logger('db','store', artist_pictures)
return artist_pictures
def populate_artist_lastfm(artist):
"""
Make sure all required and avaiable last.fm data is present in a CachedArtist document.
@param artist: a CachedArtist object
@return: a validated/updated CachedArtist object
"""
if 'lastfm' not in artist.cache_state:
lastfm = pylast.get_lastfm_network(api_key = settings.LASTFM_API_KEY)
lastfm.enable_caching()
try:
t = mmda_logger('last','request','artist-data',artist._id)
lastfm_artist = lastfm.get_artist_by_mbid(artist._id)
# TODO: run there in parallel (?)
lastfm_images = Future(lastfm_artist.get_images,pylast.IMAGES_ORDER_POPULARITY,5)
lastfm_url = Future(lastfm_artist.get_url)
# we get similar artists from lastfm database, but only those with mbid (omg, omg)
# TODO: think about numbers of fetched things
lastfm_similar = Future(_lastfm_get_similar_optimized,lastfm_artist,10)
lastfm_tags = Future(lastfm_artist.get_top_tags,10)
lastfm_abstract = None
if 'abstract' not in artist:
lastfm_abstract = lastfm_artist.get_bio_summary()
# wait for all Future to come ;-)
lastfm_url()
lastfm_tags()
lastfm_images()
lastfm_similar()
mmda_logger('last','result','artist-data',artist._id,t)
except Exception, e:
mmda_logger('pylast','ERROR',e)
else:
# TODO: make it compatible with tags imported from mb (TODO2: add tags from MusicBrainz)
# TODO: remove random?
import random
random.shuffle(lastfm_tags())
if lastfm_abstract:
artist.abstract = {'content':strip_tags(lastfm_abstract), 'lang':'en', 'provider':'Last.fm', 'url':lastfm_url()}
artist.tags = [(t.item.name.lower(), int( float(t.weight)/(float(100)/float(4)) ) ) for t in lastfm_tags()]
artist.similar = lastfm_similar()
artist.urls['Last.fm'] = [lastfm_url()]
# TODO: optimize
if lastfm_images():
artist_pictures = CachedArtistPictures.get_or_create(artist._id)
if 'lastfm' not in artist_pictures:
artist_pictures.artist_name = artist.name
artist_pictures.lastfm = [ {'sq':i.sizes.largesquare, 'big':i.sizes.original, 'url':i.url,'title':i.title} for i in lastfm_images()]
artist_pictures.cache_state['lastfm'] = [1,datetime.utcnow()]
artist_pictures.save()
mmda_logger('db','store',artist_pictures)
# if fail, store state too -- to avoid future attempts
artist.cache_state['lastfm'] = [1,datetime.utcnow()]
artist.changes_present = True
