Random fallback plugin, honoring MPD/host, more robust plugin

[mpd-sima.git] / launch

diff --git a/launch b/launch
index 5c50ef12467c0a4cc4078c09a2dbbfff605db9ba..e4c44b5c8207fcd30c70024ecb73fab985e2cb9f 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():
@@ -52,8 +95,14 @@ def main():
 
     logger.info('Starting...')
     sima = core.Sima(config, conf_manager.db_file)
-    sima.register_plugin(Crop)
-    sima.register_plugin(History)
+
+    #  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: