Set active backend in settings

mopidy/__main__.py

@@ -13,7 +13,7 @@ from mopidy.backends.libspotify import LibspotifyBackend
 
 def main():
     _setup_logging(2)
-    backend = LibspotifyBackend()
+    backend = _get_backend(config.BACKEND)
     MpdServer(backend=backend)
     asyncore.loop()
 
@@ -29,6 +29,14 @@ def _setup_logging(verbosity_level):
         level=level,
     )
 
+def _get_backend(name):
+    module_name = name[:name.rindex('.')]
+    class_name = name[name.rindex('.') + 1:]
+    module = __import__(module_name, globals(), locals(), [class_name], -1)
+    class_object = getattr(module, class_name)
+    instance = class_object()
+    return instance
+
 if __name__ == '__main__':
     try:
         main()

mopidy/settings.py

@@ -4,6 +4,9 @@ MPD_LINE_TERMINATOR = u'\n'
 MPD_SERVER_HOSTNAME = u'localhost'
 MPD_SERVER_PORT = 6600
 
+BACKEND=u'mopidy.backends.despotify.DespotifyBackend'
+#BACKEND=u'mopidy.backends.libspotify.LibspotifyBackend'
+
 SPOTIFY_USERNAME = u''
 SPOTIFY_PASSWORD = u''