Some refactoring around Exceptions

[mpd-sima.git] / sima / core.py

diff --git a/sima/core.py b/sima/core.py
index ead1ba8e9563d1e2ad61465854b508e192c596e3..83c5e910a54adae79fc860b199a6c9913792bbdd 100644 (file)
--- a/sima/core.py
+++ b/sima/core.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright (c) 2009, 2010, 2011, 2013, 2014, 2015 Jack Kaliko <kaliko@azylum.org>
+# Copyright (c) 2009-2015, 2020, 2021 kaliko <kaliko@azylum.org>
 #
 #  This file is part of sima
 #
@@ -25,8 +25,8 @@ import time
 from collections import deque
 from logging import getLogger
 
-from .client import PlayerClient
-from .client import PlayerError, PlayerUnHandledError
+from .mpdclient import MPD as PlayerClient
+from .mpdclient import PlayerError
 from .lib.simadb import SimaDB
 from .lib.daemon import Daemon
 from .utils.utils import SigHup
@@ -37,7 +37,7 @@ class Sima(Daemon):
     """
 
     def __init__(self, conf):
-        ## Set daemon
+        # Set daemon
         Daemon.__init__(self, conf.get('daemon', 'pidfile'))
         self.enabled = True
         self.config = conf
@@ -46,15 +46,9 @@ class Sima(Daemon):
         self.log = getLogger('sima')
         self._plugins = list()
         self._core_plugins = list()
-        self.player = self.__get_player()  # Player client
+        self.player = PlayerClient(conf)  # MPD client
         self.short_history = deque(maxlen=60)
-
-    def __get_player(self):
-        """Instanciate the player"""
-        host = self.config.get('MPD', 'host')
-        port = self.config.get('MPD', 'port')
-        pswd = self.config.get('MPD', 'password', fallback=None)
-        return PlayerClient(host, port, pswd)
+        self.changed = None
 
     def add_history(self):
         """Handle local, in memory, short history"""
@@ -87,7 +81,8 @@ class Sima(Daemon):
 
     @property
     def plugins(self):
-        return [plugin[1] for plugin in sorted(self._plugins, key=lambda pl: pl[0], reverse=True)]
+        return [plugin[1] for plugin in
+                sorted(self._plugins, key=lambda pl: pl[0], reverse=True)]
 
     def need_tracks(self):
         """Is the player in need for tracks"""
@@ -108,7 +103,7 @@ class Sima(Daemon):
     def queue(self):
         to_add = list()
         for plugin in self.plugins:
-            self.log.info('callback_need_track: %s', plugin)
+            self.log.debug('callback_need_track: %s', plugin)
             pl_candidates = getattr(plugin, 'callback_need_track')()
             if pl_candidates:
                 to_add.extend(pl_candidates)
@@ -122,19 +117,18 @@ class Sima(Daemon):
         cycle : 5s 10s 1m 5m 20m 1h
         """
         sleepfor = [5, 10, 60, 300, 1200, 3600]
+        # reset change
+        self.changed = None
         while True:
             tmp = sleepfor.pop(0)
             sleepfor.append(tmp)
-            self.log.info('Trying to reconnect in {:>4d} seconds'.format(tmp))
+            self.log.info('Trying to reconnect in %4d seconds', tmp)
             time.sleep(tmp)
             try:
                 self.player.connect()
             except PlayerError as err:
                 self.log.debug(err)
                 continue
-            except PlayerUnHandledError as err:
-                #TODO: unhandled Player exceptions
-                self.log.warning('Unhandled player exception: %s', err)
             self.log.info('Got reconnected')
             break
         self.foreach_plugin('start')
@@ -152,10 +146,12 @@ class Sima(Daemon):
         """
         self.log.warning('Starting shutdown.')
         # Cleaning pending command
-        self.player.clean()
-        self.foreach_plugin('shutdown')
-        self.player.disconnect()
-
+        try:
+            self.player.clean()
+            self.foreach_plugin('shutdown')
+            self.player.disconnect()
+        except PlayerError as err:
+            self.log.error('Player error during shutdown: %s', err)
         self.log.info('The way is shut, it was made by those who are dead. '
                       'And the dead keep it…')
         self.log.info('bye...')
@@ -164,35 +160,28 @@ class Sima(Daemon):
         """
         """
         try:
-            self.log.info('Connecting MPD: {0}:{1}'.format(*self.player._mpd))
+            self.log.info('Connecting MPD: %(host)s:%(port)s', self.config['MPD'])
             self.player.connect()
             self.foreach_plugin('start')
-        except (PlayerError, PlayerUnHandledError) as err:
+        except PlayerError as err:
             self.log.warning('Player: %s', err)
             self.reconnect_player()
         while 42:
             try:
                 self.loop()
-            except PlayerUnHandledError as err:
-                #TODO: unhandled Player exceptions
-                self.log.warning('Unhandled player exception: %s', err)
-                del self.player
-                self.player = self.__get_player()
-                time.sleep(5)
             except PlayerError as err:
                 self.log.warning('Player error: %s', err)
                 self.reconnect_player()
-                del self.changed
 
     def loop(self):
         """Dispatching callbacks to plugins
         """
-        # hanging here untill a monitored event is raised in the player
-        if getattr(self, 'changed', False): # first iteration exception
-            self.changed = self.player.monitor()
-        else:  # first iteration goes through else
+        # hanging here until a monitored event is raised in the player
+        if self.changed is None:  # first iteration goes through else
             self.changed = ['playlist', 'player', 'skipped']
-        self.log.debug('changed: %s', ', '.join(self.changed))
+        else:  # Wait for a change
+            self.changed = self.player.monitor()
+            self.log.debug('changed: %s', ', '.join(self.changed))
         if 'playlist' in self.changed:
             self.foreach_plugin('callback_playlist')
         if 'player' in self.changed or 'options' in self.changed: