Add apt1_runner with pkcon_runner as fallback

Author: Korney Gedert

gpoa/frontend/package_applier.py

@@ -19,12 +19,28 @@
 import logging
 import subprocess
 from util.logging import log
+import dbus
 
 from .applier_frontend import (
       applier_frontend
     , check_enabled
 )
 
+def check_apt1():
+    dbus_interface = 'org.altlinux.alterator.apt1'
+    bus_name = 'org.altlinux.alterator'
+    object_path = '/org/altlinux/alterator/apt'
+    try:
+        bus = dbus.SystemBus()
+        if bus.name_has_owner(bus_name):
+            dbus.Interface(bus.get_object(bus_name, object_path), dbus_interface)
+            return True
+        else:
+            return False
+
+    except dbus.exceptions.DBusException as e:
+        return False
+
 class package_applier(applier_frontend):
     __module_name = 'PackagesApplier'
     __module_experimental = False
@@ -40,8 +56,13 @@ def __init__(self, storage):
         install_branch = '{}\\{}%'.format(self.__hklm_branch, self.__install_key_name)
         remove_branch = '{}\\{}%'.format(self.__hklm_branch, self.__remove_key_name)
         sync_branch = '{}\\{}%'.format(self.__hklm_branch, self.__sync_key_name)
+        if check_apt1():
+            runner = '/usr/libexec/gpupdate/apt1_runner'
+        else:
+            runner = '/usr/libexec/gpupdate/pkcon_runner'
+
         self.fulcmd = []
-        self.fulcmd.append('/usr/libexec/gpupdate/pkcon_runner')
+        self.fulcmd.append(runner)
         self.fulcmd.append('--loglevel')
         logger = logging.getLogger()
         self.fulcmd.append(str(logger.level))
@@ -91,10 +112,15 @@ class package_applier_user(applier_frontend):
     __hkcu_branch = 'Software\\BaseALT\\Policies\\Packages'
 
     def __init__(self, storage, username):
+        if check_apt1():
+            runner = '/usr/libexec/gpupdate/apt1_runner'
+        else:
+            runner = '/usr/libexec/gpupdate/pkcon_runner'
+
         self.storage = storage
         self.username = username
         self.fulcmd = []
-        self.fulcmd.append('/usr/libexec/gpupdate/pkcon_runner')
+        self.fulcmd.append(runner)
         self.fulcmd.append('--user')
         self.fulcmd.append(self.username)
         self.fulcmd.append('--loglevel')