Add lastfm/album mode

[mpd-sima.git] / launch

diff --git a/launch b/launch
index 5c50ef12467c0a4cc4078c09a2dbbfff605db9ba..b769204e37371b932218050ca0a8069d7e4becb6 100755 (executable)
--- a/launch
+++ b/launch
@@ -3,21 +3,64 @@
 """Sima
 """
 
+# standart library import
 import logging
 import sys
 
+from importlib import __import__
 from os.path import isfile
 ##
 
+# third parties components
+##
+
+# local import
 from sima import core
-from sima.plugins.crop import Crop
-from sima.plugins.addhist import History
 from sima.lib.logger import set_logger
 from sima.lib.simadb import SimaDB
 from sima.utils.config import ConfMan
 from sima.utils.startopt import StartOpt
 from sima.utils.utils import exception_log
 ##
+# internal plugins
+from sima.plugins.crop import Crop
+from sima.plugins.addhist import History
+from sima.plugins.lastfm import Lastfm
+from sima.plugins.mpd import MpdOptions
+from sima.plugins.randomfallback import RandomFallBack
+
+# official plugins to start
+PLUGINS = (Crop, History, MpdOptions,
+           Lastfm, RandomFallBack)
+
+
+def load_contrib_plugins(sima):
+    """Handles contrib/external plugins
+    """
+    if not sima.config.has_option('sima', 'plugins'):
+        return
+    logger = logging.getLogger('sima')
+    for plugin in sima.config.get('sima','plugins').split(','):
+        plugin = plugin.strip(' \n')
+        module = 'sima.plugins.contrib.{}'.format(plugin.lower())
+        try:
+            mod_obj = __import__(module, fromlist=[plugin])
+        except ImportError as err:
+            logger.error('Failed to load plugin\'s module: {0} ({1})'.format(module, err))
+            sima.shutdown()
+        try:
+            plugin_obj = getattr(mod_obj, plugin)
+        except AttributeError as err:
+            logger.error('Failed to load plugin {0} ({1})'.format(plugin, err))
+            sima.shutdown()
+        logger.info('Loading contrib plugin: {name} ({doc})'.format(**plugin_obj.info()))
+        sima.register_plugin(plugin_obj)
+
+
+def load_internal_plugins(sima):
+    """Handles contrib/external plugins
+    """
+    raise NotImplementedError
 
 
 def main():
@@ -28,32 +71,38 @@ def main():
     sopt = StartOpt(info)
     # set logger
     verbosity = sopt.options.get('verbosity', 'warning')
+    logfile = sopt.options.get('logfile', None)
     cli_loglevel = getattr(logging, verbosity.upper())
-    set_logger(level=verbosity)
+    set_logger(level=verbosity, logfile=logfile)
     logger = logging.getLogger('sima')
     logger.setLevel(cli_loglevel)
     # loads configuration
-    conf_manager = ConfMan(logger, sopt.options)
-    config = conf_manager.config
+    config = ConfMan(logger, sopt.options).config
     logger.setLevel(getattr(logging,
                     config.get('log', 'verbosity').upper()))  # pylint: disable=E1103
 
     logger.debug('Command line say: {0}'.format(sopt.options))
-
     # Create Database
+    db_file = config.get('sima', 'db_file')
     if (sopt.options.get('create_db', None)
-       or not isfile(conf_manager.db_file)):
-        logger.info('Creating database in "{}"'.format(conf_manager.db_file))
-        open(conf_manager.db_file, 'a').close()
-        SimaDB(db_path=conf_manager.db_file).create_db()
+       or not isfile(db_file)):
+        logger.info('Creating database in "{}"'.format(db_file))
+        open(db_file, 'a').close()
+        SimaDB(db_path=db_file).create_db()
         if sopt.options.get('create_db', None):
             logger.info('Done, bye...')
             sys.exit(0)
 
     logger.info('Starting...')
-    sima = core.Sima(config, conf_manager.db_file)
-    sima.register_plugin(Crop)
-    sima.register_plugin(History)
+    sima = core.Sima(config)
+
+    #  Loading internal plugins
+    for plugin in PLUGINS:
+        logger.info('Loading internal plugin: {name} ({doc})'.format(**plugin.info()))
+        sima.register_plugin(plugin)
+
+    #  Loading contrib plugins
+    load_contrib_plugins(sima)
     try:
         sima.run()
     except KeyboardInterrupt:
@@ -61,14 +110,18 @@ def main():
         sima.shutdown()
 
 
-# Script starts here
-if __name__ == '__main__':
+def run():
+    """Catching broad exception
+    """
     # pylint: disable=broad-except
     try:
         main()
     except Exception:
         exception_log()
 
+# Script starts here
+if __name__ == '__main__':
+    run()
 
 # VIM MODLINE
 # vim: ai ts=4 sw=4 sts=4 expandtab