-import urllib, threading, os, gzip, time, json, re
-_DUMP_URL = '''http://img.jamendo.com/data/dbdump_artistalbumtrack.xml.gz'''
-_DUMP = os.path.expanduser('''~/.cache/jamaendo/dbdump.xml.gz''')
-
-try:
- os.makedirs(os.path.dirname(_DUMP))
-except OSError:
- pass
-
-def has_dump():
- return os.path.isfile(_DUMP)
-
-def _file_is_old(fil, old_age):
- return os.path.getmtime(fil) < (time.time() - old_age)
-
-def _dump_is_old():
- return not has_dump() or _file_is_old(_DUMP, 60*60*24) # 1 day
-
-def refresh_dump(complete_callback, progress_callback=None, force=False):
- if force or _dump_is_old():
- downloader = Downloader(complete_callback, progress_callback)
- downloader.start()
- else:
- complete_callback()
-
-class Downloader(threading.Thread):
- def __init__(self, complete_callback, progress_callback):
- threading.Thread.__init__(self)
- self.complete_callback = complete_callback
- self.progress_callback = progress_callback
-
- def actual_callback(self, numblocks, blocksize, filesize):
- if self.progress_callback:
- try:
- percent = min((numblocks*blocksize*100)/filesize, 100)
- except:
- percent = 100
- self.progress_callback(percent)
-
- def run(self):
- urllib.urlretrieve(_DUMP_URL, _DUMP, self.actual_callback)
- self.complete_callback()
-
-def fast_iter(context, func):
- for event, elem in context:
- func(elem)
- elem.clear()
- while elem.getprevious() is not None:
- del elem.getparent()[0]
- del context
-
-from lxml import etree
-
-class Obj(object):
- def __repr__(self):
- def printable(v):
- if isinstance(v, basestring):
- return v.encode('utf-8')
+#!/usr/bin/env python
+#
+# This file is part of Jamaendo.
+# Copyright (c) 2010, Kristoffer Gronlund
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+# * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+# * Redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution.
+# * Neither the name of Jamaendo nor the
+# names of its contributors may be used to endorse or promote products
+# derived from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+# DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
+# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# An improved, structured jamendo API wrapper for the N900 with cacheing
+# Image / cover downloads.. and more?
+import urllib, threading, os, gzip, time, simplejson, re
+
+_CACHEDIR = None
+_COVERDIR = None
+_GET2 = '''http://api.jamendo.com/get2/'''
+_MP3URL = _GET2+'stream/track/redirect/?id=%d&streamencoding=mp31'
+_OGGURL = _GET2+'stream/track/redirect/?id=%d&streamencoding=ogg2'
+
+
+def set_cache_dir(cachedir):
+ global _CACHEDIR
+ global _COVERDIR
+ _CACHEDIR = cachedir
+ _COVERDIR = os.path.join(_CACHEDIR, 'covers')
+
+ try:
+ os.makedirs(_CACHEDIR)
+ except OSError:
+ pass
+
+ try:
+ os.makedirs(_COVERDIR)
+ except OSError:
+ pass
+
+# These classes can be partially constructed,
+# and if asked for a property they don't know,
+# makes a query internally to get the full story
+
+_ARTIST_FIELDS = ['id', 'name', 'image']
+_ALBUM_FIELDS = ['id', 'name', 'image', 'artist_name', 'artist_id', 'license_url']
+_TRACK_FIELDS = ['id', 'name', 'image', 'artist_name', 'album_name', 'album_id', 'numalbum', 'duration']
+_RADIO_FIELDS = ['id', 'name', 'idstr', 'image']
+
+class LazyQuery(object):
+ def set_from_json(self, json):
+ for key, value in json.iteritems():
+ if key == 'id':
+ assert(self.ID == int(value))
else:
- return str(v)
- return "{%s}" % (", ".join("%s=%s"%(k.encode('utf-8'), printable(v)) \
- for k,v in self.__dict__.iteritems() if not k.startswith('_')))
+ if key.endswith('_id'):
+ value = int(value)
+ setattr(self, key, value)
+
+ def load(self):
+ """Not automatic for now,
+ will have to do artist.load()
+
+ This is filled in further down
+ in the file
+ """
+ raise NotImplemented
+
+ def _needs_load(self):
+ return True
+
+ def _set_from(self, other):
+ raise NotImplemented
+
+ def _needs_load_impl(self, *attrs):
+ for attr in attrs:
+ if getattr(self, attr) is None:
+ return True
+ return False
+
+ def _set_from_impl(self, other, *attrs):
+ for attr in attrs:
+ self._set_if(other, attr)
+
+ def _set_if(self, other, attrname):
+ if getattr(self, attrname) is None and getattr(other, attrname) is not None:
+ setattr(self, attrname, getattr(other, attrname))
+
+ def __repr__(self):
+ try:
+ return u"%s(%s)"%(self.__class__.__name__,
+ u", ".join(repr(v) for k,v in self.__dict__.iteritems() if not k.startswith('_')))
+ except UnicodeEncodeError:
+ import traceback
+ traceback.print_exc()
+ return u"%s(?)"%(self.__class__.__name__)
+
+class Artist(LazyQuery):
+ def __init__(self, ID, json=None):
+ self.ID = int(ID)
+ self.name = None
+ self.image = None
+ self.albums = None # None means not downloaded
+ if json:
+ self.set_from_json(json)
+
+ def _needs_load(self):
+ return self._needs_load_impl('name', 'albums')
+
+ def _set_from(self, other):
+ return self._set_from_impl(other, 'name', 'image', 'albums')
+
+class Album(LazyQuery):
+ def __init__(self, ID, json=None):
+ self.ID = int(ID)
+ self.name = None
+ self.image = None
+ self.artist_name = None
+ self.artist_id = None
+ self.license_url = None
+ self.tracks = None # None means not downloaded
+ if json:
+ self.set_from_json(json)
+
+ def _needs_load(self):
+ return self._needs_load_impl('name', 'image', 'artist_name', 'artist_id', 'license_url', 'tracks')
+
+ def _set_from(self, other):
+ return self._set_from_impl(other, 'name', 'image', 'artist_name', 'artist_id', 'license_url', 'tracks')
+
+class Track(LazyQuery):
+ def __init__(self, ID, json=None):
+ self.ID = int(ID)
+ self.name = None
+ self.image = None
+ self.artist_name = None
+ self.album_name = None
+ self.album_id = None
+ self.numalbum = None
+ self.duration = None
+ if json:
+ self.set_from_json(json)
+
+ def mp3_url(self):
+ return _MP3URL%(self.ID)
+
+ def ogg_url(self):
+ return _OGGURL%(self.ID)
+
+ def _needs_load(self):
+ return self._needs_load_impl('name', 'artist_name', 'album_name', 'album_id', 'numalbum', 'duration')
+
+ def _set_from(self, other):
+ return self._set_from_impl(other, 'name', 'image', 'artist_name', 'album_name', 'album_id', 'numalbum', 'duration')
+
+class Radio(LazyQuery):
+ def __init__(self, ID, json=None):
+ self.ID = int(ID)
+ self.name = None
+ self.idstr = None
+ self.image = None
+ if json:
+ self.set_from_json(json)
+
+ def _needs_load(self):
+ return self._needs_load_impl('name', 'idstr', 'image')
+
+ def _set_from(self, other):
+ return self._set_from_impl(other, 'name', 'idstr', 'image')
+
+
+_artists = {} # id -> Artist()
+_albums = {} # id -> Album()
+_tracks = {} # id -> Track()
+_radios = {} # id -> Radio()
+
+
+# cache sizes per session (TODO)
+_CACHED_ARTISTS = 100
+_CACHED_ALBUMS = 200
+_CACHED_TRACKS = 500
+_CACHED_RADIOS = 10
+
+# TODO: cache queries?
+
+class Query(object):
+ rate_limit = 1.1 # seconds between queries
+ last_query = time.time() - 1.5
+
+ @classmethod
+ def _ratelimit(cls):
+ now = time.time()
+ if now - cls.last_query < cls.rate_limit:
+ time.sleep(cls.rate_limit - (now - cls.last_query))
+ cls.last_query = now
+
+ def __init__(self):
+ pass
-class DB(object):
+ def _geturl(self, url):
+ print "*** %s" % (url)
+ Query._ratelimit()
+ f = urllib.urlopen(url)
+ ret = simplejson.load(f)
+ f.close()
+ return ret
+
+ def __str__(self):
+ return "#%s" % (self.__class__.__name__)
+
+ def execute(self):
+ raise NotImplemented
+
+class CoverCache(object):
+ """
+ cache and fetch covers
+ TODO: background thread that
+ fetches and returns covers,
+ asynchronously, LIFO
+ """
def __init__(self):
- self.fil = None
+ self._covers = {} # (albumid, size) -> file
+ coverdir = _COVERDIR if _COVERDIR else '/tmp'
+ if os.path.isdir(coverdir):
+ covermatch = re.compile(r'(\d+)\-(\d+)\.jpg')
+ for fil in os.listdir(coverdir):
+ fl = os.path.join(coverdir, fil)
+ m = covermatch.match(fil)
+ if m and os.path.isfile(fl):
+ self._covers[(int(m.group(1)), int(m.group(2)))] = fl
+
+ def fetch_cover(self, albumid, size):
+ coverdir = _COVERDIR if _COVERDIR else '/tmp'
+ to = os.path.join(coverdir, '%d-%d.jpg'%(albumid, size))
+ if not os.path.isfile(to):
+ url = _GET2+'image/album/redirect/?id=%d&imagesize=%d'%(albumid, size)
+ urllib.urlretrieve(url, to)
+ self._covers[(albumid, size)] = to
+ return to
+
+ def get_cover(self, albumid, size):
+ cover = self._covers.get((albumid, size), None)
+ if not cover:
+ cover = self.fetch_cover(albumid, size)
+ return cover
+
+ def get_async(self, albumid, size, cb):
+ cover = self._covers.get((albumid, size), None)
+ if cover:
+ cb(cover)
+ else:
+ # TODO
+ cover = self.fetch_cover(albumid, size)
+ cb(cover)
+
+_cover_cache = CoverCache()
+
+def get_album_cover(albumid, size=200):
+ return _cover_cache.get_cover(albumid, size)
+
+def get_album_cover_async(cb, albumid, size=200):
+ _cover_cache.get_async(albumid, size, cb)
+
+class CustomQuery(Query):
+ def __init__(self, url):
+ Query.__init__(self)
+ self.url = url
+
+ def execute(self):
+ return self._geturl(self.url)
+
+ def __str__(self):
+ return self.url
+
+class GetQuery(Query):
+ queries = {
+ 'artist' : {
+ 'url' : _GET2+'+'.join(_ARTIST_FIELDS)+'/artist/json/?',
+ 'params' : 'artist_id=%d',
+ 'constructor' : Artist
+ },
+ 'album' : {
+ 'url' : _GET2+'+'.join(_ALBUM_FIELDS)+'/album/json/?',
+ 'params' : 'album_id=%d',
+ 'constructor' : Album
+ },
+ 'albums' : {
+ 'url' : _GET2+'+'.join(_ALBUM_FIELDS)+'/album/json/?',
+ 'params' : 'artist_id=%d',
+ 'constructor' : [Album]
+ },
+ 'track' : {
+ 'url' : _GET2+'+'.join(_TRACK_FIELDS)+'/track/json/track_album+album_artist?',
+ 'params' : 'id=%d',
+ 'constructor' : Track
+ },
+ 'tracks' : {
+ 'url' : _GET2+'+'.join(_TRACK_FIELDS)+'/track/json/track_album+album_artist?',
+ 'params' : 'order=numalbum_asc&album_id=%d',
+ 'constructor' : [Track]
+ },
+ 'radio' : {
+ 'url' : _GET2+'+'.join(_TRACK_FIELDS)+'/track/json/radio_track_inradioplaylist+track_album+album_artist/?',
+ 'params' : 'order=random_asc&radio_id=%d',
+ 'constructor' : [Track]
+ },
+ 'favorite_albums' : {
+ 'url' : _GET2+'+'.join(_ALBUM_FIELDS)+'/album/json/album_user_starred/?',
+ 'params' : 'user_idstr=%s',
+ 'constructor' : [Album]
+ },
+ #http://api.jamendo.com/get2/id+name+url+image+artist_name/album/jsonpretty/album_user_starred/?user_idstr=sylvinus&n=all
+ #q = SearchQuery('album', user_idstr=user)
+
+ }
+#http://api.jamendo.com/get2/id+name+image+artist_name+album_name+album_id+numalbum+duration/track/json/radio_track_inradioplaylist+track_album+album_artist/?order=numradio_asc&radio_id=283
+
+ def __init__(self, what, ID):
+ Query.__init__(self)
+ self.ID = ID
+ info = GetQuery.queries[what]
+ self.url = info['url']
+ self.params = info['params']
+ self.constructor = info['constructor']
+
+ def construct(self, data):
+ constructor = self.constructor
+ if isinstance(constructor, list):
+ constructor = constructor[0]
+ if isinstance(data, list):
+ return [constructor(int(x['id']), json=x) for x in data]
+ else:
+ return constructor(int(data['id']), json=data)
+
+ def execute(self):
+ js = self._geturl(self.url + self.params % (self.ID))
+ if not js:
+ return None
+ return self.construct(js)
+
+ def __str__(self):
+ return self.url + self.params % (self.ID)
+
+class SearchQuery(GetQuery):
+ def __init__(self, what, query=None, order=None, user=None, count=10):
+ GetQuery.__init__(self, what, None)
+ self.query = query
+ self.order = order
+ self.count = count
+ self.user = user
- def connect(self):
- self.fil = gzip.open(_DUMP)
+ def execute(self):
+ params = {}
+ if self.query:
+ params['searchquery'] = self.query
+ if self.order:
+ params['order'] = self.order
+ if self.count:
+ params['n'] = self.count
+ if self.user:
+ params['user_idstr'] = self.user
+ js = self._geturl(self.url + urllib.urlencode(params))
+ if not js:
+ return None
+ return self.construct(js)
- def close(self):
- self.fil.close()
+ def __str__(self):
+ params = {'searchquery':self.query, 'order':self.order, 'n':self.count}
+ return self.url + urllib.urlencode(params)
- def make_obj(self, element):
- if element.text is not None and element.text != "":
- return element.text
+class JamendoAPIException(Exception):
+ def __init__(self, url):
+ Exception.__init__(self, url)
+
+def _update_cache(cache, new_items):
+ if not isinstance(new_items, list):
+ new_items = [new_items]
+ for item in new_items:
+ old = cache.get(item.ID)
+ if old:
+ old._set_from(item)
else:
- ret = Obj()
- for child in element:
- setattr(ret, child.tag, self.make_obj(child))
- return ret
-
- def artist_walker(self):
- for event, element in etree.iterparse(self.fil, tag="artist"):
- yield self.make_obj(element)
- element.clear()
- while element.getprevious() is not None:
- del element.getparent()[0]
- raise StopIteration
-
- def search_artists(self, substr):
- substr = substr.lower()
- #return [dir(artist) for artist in self.artist_walker() if artist.name.find(substr) > -1]
- artist = self.artist_walker().next()
- print artist
- print artist.name
- return [artist.id]
+ cache[item.ID] = item
+
+def get_artist(artist_id):
+ """Returns: Artist"""
+ a = _artists.get(artist_id, None)
+ if not a:
+ q = GetQuery('artist', artist_id)
+ a = q.execute()
+ if not a:
+ raise JamendoAPIException(str(q))
+ _update_cache(_artists, a)
+ if isinstance(a, list):
+ a = a[0]
+ return a
+
+def get_albums(artist_id):
+ """Returns: [Album]"""
+ q = GetQuery('albums', artist_id)
+ a = q.execute()
+ if not a:
+ raise JamendoAPIException(str(q))
+ _update_cache(_artists, a)
+ return a
+
+def get_album(album_id):
+ """Returns: Album"""
+ a = _albums.get(album_id, None)
+ if not a:
+ q = GetQuery('album', album_id)
+ a = q.execute()
+ if not a:
+ raise JamendoAPIException(str(q))
+ _update_cache(_albums, a)
+ if isinstance(a, list):
+ a = a[0]
+ return a
+
+def get_tracks(album_id):
+ """Returns: [Track]"""
+ q = GetQuery('tracks', album_id)
+ a = q.execute()
+ if not a:
+ raise JamendoAPIException(str(q))
+ _update_cache(_tracks, a)
+ return a
+
+def get_track(track_id):
+ """Returns: Track"""
+ a = _tracks.get(track_id, None)
+ if not a:
+ q = GetQuery('track', track_id)
+ a = q.execute()
+ if not a:
+ raise JamendoAPIException(str(q))
+ _update_cache(_tracks, a)
+ if isinstance(a, list):
+ a = a[0]
+ return a
+
+def get_radio_tracks(radio_id):
+ """Returns: [Track]"""
+ q = GetQuery('radio', radio_id)
+ a = q.execute()
+ if not a:
+ raise JamendoAPIException(str(q))
+ _update_cache(_tracks, a)
+ return a
+
+def search_artists(query):
+ """Returns: [Artist]"""
+ q = SearchQuery('artist', query, 'searchweight_desc')
+ a = q.execute()
+ if not a:
+ raise JamendoAPIException(str(q))
+ _update_cache(_artists, a)
+ return a
+
+def search_albums(query):
+ """Returns: [Album]"""
+ q = SearchQuery('album', query, 'searchweight_desc')
+ a = q.execute()
+ if not a:
+ raise JamendoAPIException(str(q))
+ _update_cache(_albums, a)
+ return a
+
+def search_tracks(query):
+ """Returns: [Track]"""
+ q = SearchQuery('track', query=query, order='searchweight_desc')
+ a = q.execute()
+ if not a:
+ raise JamendoAPIException(str(q))
+ _update_cache(_tracks, a)
+ return a
+
+def albums_of_the_week():
+ """Returns: [Album]"""
+ q = SearchQuery('album', order='ratingweek_desc')
+ a = q.execute()
+ if not a:
+ raise JamendoAPIException(str(q))
+ _update_cache(_albums, a)
+ return a
+
+def new_releases():
+ """Returns: [Track] (playlist)"""
+ q = SearchQuery('track', order='releasedate_desc')
+ a = q.execute()
+ if not a:
+ raise JamendoAPIException(str(q))
+ _update_cache(_tracks, a)
+ return a
+
+def tracks_of_the_week():
+ """Returns: [Track] (playlist)"""
+ q = SearchQuery('track', order='ratingweek_desc')
+ a = q.execute()
+ if not a:
+ raise JamendoAPIException(str(q))
+ _update_cache(_tracks, a)
+ return a
+
+def get_radio(radio_id):
+ """Returns: Radio"""
+ q = CustomQuery(_GET2+"id+name+idstr+image/radio/json?id=%d"%(radio_id))
+ js = q.execute()
+ if not js:
+ raise JamendoAPIException(str(q))
+ if isinstance(js, list):
+ ks = js[0]
+ return Radio(radio_id, json=js)
+
+def starred_radios():
+ """Returns: [Radio]"""
+ q = CustomQuery(_GET2+"id+name+idstr+image/radio/json?order=starred_desc")
+ js = q.execute()
+ if not js:
+ raise JamendoAPIException(str(q))
+ return [Radio(int(radio['id']), json=radio) for radio in js]
+
+def favorite_albums(user):
+ """Returns: [Album]"""
+ q = SearchQuery('favorite_albums', user=user, count=20)
+ a = q.execute()
+ if not a:
+ raise JamendoAPIException(str(q))
+ _update_cache(_albums, a)
+ return a
+
+### Set loader functions for classes
+
+def _artist_loader(self):
+ if self._needs_load():
+ artist = get_artist(self.ID)
+ self._set_from(artist)
+Artist.load = _artist_loader
+
+def _album_loader(self):
+ if self._needs_load():
+ album = get_album(self.ID)
+ album.tracks = get_tracks(self.ID)
+ self._set_from(album)
+Album.load = _album_loader
+
+def _track_loader(self):
+ track = get_track(self.ID)
+ self._set_from(track)
+Track.load = _track_loader
+
+def _radio_loader(self):
+ radio = get_radio(self.ID)
+ self._set_from(radio)
+Radio.load = _radio_loader
projects / jamaendo / blobdiff