/usr/share/backintime/common/pluginmanager.py is in backintime-common 1.1.12-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# Copyright (C) 2008-2016 Oprea Dan, Bart de Koning, Richard Bailey, Germar Reitze
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
import os
import sys
import tools
tools.register_backintime_path( 'common' )
tools.register_backintime_path( 'plugins' )
import logger
from exceptions import StopException
class Plugin:
def __init__( self ):
return
def init( self, snapshots ):
return True
def is_gui( self ):
return False
def on_process_begins( self ):
return
def on_process_ends( self ):
return
def on_error( self, code, message ):
return
def on_new_snapshot( self, snapshot_id, snapshot_path ):
return
def on_message( self, profile_id, profile_name, level, message, timeout ):
return
def on_app_start(self):
return
def on_app_exit(self):
return
def do_mount(self):
return
def do_unmount(self):
return
class PluginManager:
def __init__( self ):
self.plugins = []
self.has_gui_plugins_ = False
self.plugins_loaded = False
def load_plugins( self, snapshots = None, cfg = None, force = False ):
if self.plugins_loaded and not force:
return
if snapshots is None:
import snapshots as snapshots_
snapshots = snapshots_.Snapshots(cfg)
self.plugins_loaded = True
self.plugins = []
self.has_gui_plugins_ = False
loadedPlugins = []
for path in ('plugins', 'common/plugins', 'qt4/plugins'):
fullPath = tools.get_backintime_path(path)
if os.path.isdir(fullPath):
logger.debug('Register plugin path %s' %fullPath, self)
tools.register_backintime_path(path)
for f in os.listdir(fullPath):
if f not in loadedPlugins and f.endswith('.py') and not f.startswith('__'):
try:
module = __import__( f[ : -3 ] )
module_dict = module.__dict__
for key, value in list(module_dict.items()):
if key.startswith( '__' ):
continue
if type(value) is type:
if issubclass( value, Plugin ):
plugin = value()
if plugin.init( snapshots ):
logger.debug('Add plugin %s' %f, self)
if plugin.is_gui():
self.has_gui_plugins_ = True
self.plugins.insert( 0, plugin )
else:
self.plugins.append( plugin )
loadedPlugins.append(f)
except BaseException as e:
logger.error('Failed to load plugin %s: %s' %(f, str(e)), self)
def has_gui_plugins( self ):
return self.has_gui_plugins_
def on_process_begins( self ):
ret_val = True
for plugin in self.plugins:
try:
plugin.on_process_begins()
except StopException:
ret_val = False
except BaseException as e:
self.log_error(plugin, e)
return ret_val
def on_process_ends( self ):
for plugin in reversed( self.plugins ):
try:
plugin.on_process_ends()
except BaseException as e:
self.log_error(plugin, e)
def on_error( self, code, message = '' ):
for plugin in self.plugins:
try:
plugin.on_error( code, message )
except BaseException as e:
self.log_error(plugin, e)
def on_new_snapshot( self, snapshot_id, snapshot_path ):
for plugin in self.plugins:
try:
plugin.on_new_snapshot( snapshot_id, snapshot_path )
except BaseException as e:
self.log_error(plugin, e)
def on_message( self, profile_id, profile_name, level, message, timeout = -1 ):
for plugin in self.plugins:
try:
plugin.on_message( profile_id, profile_name, level, message, timeout )
except BaseException as e:
self.log_error(plugin, e)
def on_app_start( self ):
for plugin in reversed( self.plugins ):
try:
plugin.on_app_start()
except BaseException as e:
self.log_error(plugin, e)
def on_app_exit( self ):
for plugin in reversed( self.plugins ):
try:
plugin.on_app_exit()
except BaseException as e:
self.log_error(plugin, e)
def do_mount( self ):
for plugin in reversed( self.plugins ):
try:
plugin.do_mount()
except BaseException as e:
self.log_error(plugin, e)
def do_unmount( self ):
for plugin in reversed( self.plugins ):
try:
plugin.do_unmount()
except BaseException as e:
self.log_error(plugin, e)
def log_error(self, plugin, e):
logger.error('Plugin %s %s failed: %s'
%(plugin.__module__, #plugin name
sys._getframe(1).f_code.co_name, #method name
str(e)), #exception
self, 1)
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