[magneto] determine whether system is running on batteries and skip repo sync in case

magneto/src/magneto/core/interfaces.py

@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """
 
     @author: Fabio Erculiani <lxnay@sabayonlinux.org>
@@ -10,6 +11,7 @@
 """
 
 # System imports
+import os
 import sys
 import time
 import subprocess
@@ -248,6 +250,21 @@ class MagnetoCore(MagnetoCoreUI):
             _("Repositories are being updated automatically")
         )
 
+    def is_system_on_batteries(self):
+        """
+        Return whether System is running on batteries.
+
+        @return: True, if running on batteries
+        @rtype: bool
+        """
+        ac_powa_exec = "/usr/bin/on_ac_power"
+        if not os.access(ac_powa_exec, os.X_OK):
+            return False
+        ex_rc = os.system(ac_powa_exec)
+        if ex_rc:
+            return True
+        return False
+
     def is_system_changed(self):
 
         # enable applet if disabled

magneto/src/magneto/gtk/interfaces.py

@@ -73,6 +73,11 @@ class Magneto(MagnetoCore):
 
     def __do_first_check(self):
 
+        # if system is running on batteries,
+        # first check is skipped
+        if self.is_system_on_batteries():
+            return
+
         def _do_check():
             self.send_check_updates_signal()
             return False

magneto/src/magneto/kde/interfaces.py

@@ -93,6 +93,11 @@ class Magneto(MagnetoCore):
 
     def __do_first_check(self):
 
+        # if system is running on batteries,
+        # first check is skipped
+        if self.is_system_on_batteries():
+            return
+
         def _do_check():
             self.send_check_updates_signal()
             return False

services/client-updates-daemon

@@ -198,7 +198,25 @@ class UpdatesDaemon(dbus.service.Object):
     def do_alert(self, string, msg, urgency = "critical"):
         write_output('alert: %s, %s, urgency: %s' % (string, msg, urgency,))
 
+    def is_system_on_batteries(self):
+        """
+        Return whether System is running on batteries.
+
+        @return: True, if running on batteries
+        @rtype: bool
+        """
+        ac_powa_exec = "/usr/bin/on_ac_power"
+        if not os.access(ac_powa_exec, os.X_OK):
+            return False
+        ex_rc = os.system(ac_powa_exec)
+        if ex_rc:
+            return True
+        return False
+
     def check_system_changes(self):
+        if self.is_system_on_batteries():
+            # running on batteries, then skip
+            return self.__alive
         changed = self._is_system_changed()
         if changed:
             # trigger check and push
@@ -224,6 +242,11 @@ class UpdatesDaemon(dbus.service.Object):
         return self.__alive
 
     def run_fetcher(self):
+
+        if self.is_system_on_batteries():
+            # running on batteries, then skip
+            return self.__alive
+
         with self.__fetch_mutex:
             task = ParallelTask(self.__run_fetcher)
             task.start()