def do_missing(self, options):
'''
missing [PATH]
Shows all missing required attribute values in the current candidate
configuration for PATH, relative to the current edit level.
'''
node_filter = filter_only_missing
path = ("%s %s" % (self.edit_levels[-1], options)).strip()
if not path:
path = '.*'
trees = self.config.search(path)
if not trees:
trees = self.config.search("%s .*" % path)
if not trees:
raise CliError("No such path: %s" % path)
missing = []
for tree in trees:
for attr in tree.walk(node_filter):
missing.append(attr)
if not options:
path = "current configuration"
if not missing:
log.warning("No missing attributes values under %s" % path)
else:
log.warning("Missing attributes values under %s:" % path)
for attr in missing:
log.info(" %s" % attr.path_str)
sys.stdout.write("\n")
def do_missing(self, options):
'''
missing [PATH]
Shows all missing required attribute values in the current candidate
configuration for PATH, relative to the current edit level.
'''
node_filter = filter_only_missing
path = ("%s %s" % (self.edit_levels[-1], options)).strip()
if not path:
path = '.*'
trees = self.config.search(path)
if not trees:
trees = self.config.search("%s .*" % path)
if not trees:
raise CliError("No such path: %s" % path)
missing = []
for tree in trees:
for attr in tree.walk(node_filter):
missing.append(attr)
if not options:
path = "current configuration"
if not missing:
log.warning("No missing attributes values under %s" % path)
else:
log.warning("Missing attributes values under %s:" % path)
for attr in missing:
log.info(" %s" % attr.path_str)
sys.stdout.write("\n")
def do_exit(self, options):
'''
exit [now]
Exits the current configuration edit level, and goes back to the
previous edit level. If run on the top-level configuration, then exits
config mode.
If the now option is provided, no confirmation will be asked if there
are uncommitted changes in the current candidate configuration when
exiting the config mode.
'''
options = self.parse(options, 'exit', pp.Optional('now'))[1:]
if self.edit_levels[-1]:
self.del_edit_level()
exit = False
elif self.needs_commit:
log.warning("[edit] All non-commited changes will be lost!")
if 'now' in options:
log.warning("[edit] exiting anyway, as requested")
exit = True
else:
exit = self.yes_no("Exit config mode anyway?", False)
else:
exit = True
return exit
def do_diff(self, options):
'''
diff
Shows all differences between the current configuration and the live
running configuration.
'''
options = self.parse(options, 'diff', '')[1:]
diff = self.config.diff_live()
has_diffs = False
if diff['removed']:
has_diffs = True
log.warning("Objects removed in the current configuration:")
for node in diff['removed']:
log.info(" %s" % node.path_str)
if diff['created']:
has_diffs = True
log.warning("New objects in the current configuration:")
for node in diff['created']:
log.info(" %s" % node.path_str)
if diff['major']:
has_diffs = True
log.warning("Major attribute changes in the current configuration:")
for node in diff['major']:
log.info(" %s" % node.path_str)
if diff['minor']:
has_diffs = True
log.warning("Minor attribute changes in the current configuration:")
for node in diff['minor']:
log.info(" %s" % node.path_str)
if not has_diffs:
log.warning("Current configuration is in sync with live system")
else:
sys.stdout.write("\n")
def do_exit(self, options):
'''
exit [now]
Exits the current configuration edit level, and goes back to the
previous edit level. If run on the top-level configuration, then exits
config mode.
If the now option is provided, no confirmation will be asked if there
are uncommitted changes in the current candidate configuration when
exiting the config mode.
'''
options = self.parse(options, 'exit', pp.Optional('now'))[1:]
if self.edit_levels[-1]:
self.del_edit_level()
exit = False
elif self.needs_commit:
log.warning("[edit] All non-commited changes will be lost!")
if 'now' in options:
log.warning("[edit] exiting anyway, as requested")
exit = True
else:
exit = self.yes_no("Exit config mode anyway?", False)
else:
exit = True
return exit
def do_reload(self, options):
'''
reload
Reloads the saved system configuration from disk and commits it to the
running system.
'''
if not os.path.isfile(self.config_path):
log.info("There is no on-disk system configuration: %s does "
"not exist" % self.config_path)
return
if self.yes_no(
"Replace the current configuration with the saved "
"system configuration?", False) is not False:
log.info("Loading %s..." % self.config_path)
self.config.load(self.config_path, allow_new_attrs=True)
log.info("Commiting...")
for msg in self.config.apply():
if 'interactive' in options:
apply = self.yes_no("%s\nPlease confirm" % msg, True)
if apply is False:
log.warning("Aborted commit on user request: "
"please verify system status")
return
else:
log.info(msg)
else:
log.info("Cancelled: configuration not modified")
def do_reload(self, options):
'''
reload
Reloads the saved system configuration from disk and commits it to the
running system.
'''
if not os.path.isfile(self.config_path):
log.info("There is no on-disk system configuration: %s does "
"not exist" % self.config_path)
return
if self.yes_no("Replace the current configuration with the saved "
"system configuration?", False) is not False:
log.info("Loading %s..." % self.config_path)
self.config.load(self.config_path, allow_new_attrs=True)
log.info("Commiting...")
for msg in self.config.apply():
if 'interactive' in options:
apply = self.yes_no("%s\nPlease confirm" % msg, True)
if apply is False:
log.warning("Aborted commit on user request: "
"please verify system status")
return
else:
log.info(msg)
else:
log.info("Cancelled: configuration not modified")
def del_edit_level(self):
if len(self.edit_levels) == 1:
raise CliError("Already at top-level")
self.edit_levels.pop()
if len(self.edit_levels) == 1:
log.warning("[edit] top-level")
else:
log.warning("[edit] %s" % self.edit_levels[-1])
self.set_prompt(self.edit_levels[-1])
def __init__(self, interactive=False):
Cli.__init__(self, interactive, self.history_path)
self.set_prompt()
log.info("Syncing policy and configuration...")
self.config = Config()
self.config.load_live()
self.edit_levels = ['']
self.needs_save = False
if interactive:
log.warning("[edit] top-level")
def del_edit_level(self):
if len(self.edit_levels) == 1:
raise CliError("Already at top-level")
self.edit_levels.pop()
if len(self.edit_levels) == 1:
log.warning("[edit] top-level")
else:
log.warning("[edit] %s" % self.edit_levels[-1])
self.set_prompt(self.edit_levels[-1])
def __init__(self, interactive=False):
Cli.__init__(self, interactive, self.history_path)
self.set_prompt()
log.info("Syncing policy and configuration...")
self.config = Config()
self.config.load_live()
self.edit_levels = ['']
self.needs_save = False
if interactive:
log.warning("[edit] top-level")
def do_commit(self, options):
'''
commit [check|interactive]
Saves the current configuration to the system startup configuration
file, after applying the changes to the running system.
If the check option is provided, the current configuration will be
checked but not saved or applied.
If the interactive option is provided, the user will be able to confirm
or skip every modification to the live system.
'''
# TODO Add [as DESCRIPTION] option
# TODO Change to commit only current level unless 'all' option
syntax = pp.Optional(pp.oneOf("check interactive"))
options = self.parse(options, 'commit', syntax)[1:]
if self.attrs_missing:
self.do_missing('')
raise CliError("Cannot validate configuration: "
"required attributes not set")
if not self.needs_commit:
raise CliError("No changes to commit!")
log.info("Validating configuration")
for msg in self.config.verify():
log.info(msg)
if 'check' in options:
return
do_it = self.yes_no(
"Apply changes and overwrite system "
"configuration ?", False)
if do_it is not False:
log.info("Applying configuration")
for msg in self.config.apply():
if 'interactive' in options:
apply = self.yes_no("%s\nPlease confirm" % msg, True)
if apply is False:
log.warning("Aborted commit on user request: "
"please verify system status")
return
else:
log.info(msg)
self.save_running_config()
self.needs_save = False
else:
log.info("Cancelled configuration commit")
def do_commit(self, options):
'''
commit [check|interactive]
Saves the current configuration to the system startup configuration
file, after applying the changes to the running system.
If the check option is provided, the current configuration will be
checked but not saved or applied.
If the interactive option is provided, the user will be able to confirm
or skip every modification to the live system.
'''
# TODO Add [as DESCRIPTION] option
# TODO Change to commit only current level unless 'all' option
syntax = pp.Optional(pp.oneOf("check interactive"))
options = self.parse(options, 'commit', syntax)[1:]
if self.attrs_missing:
self.do_missing('')
raise CliError("Cannot validate configuration: "
"required attributes not set")
if not self.needs_commit:
raise CliError("No changes to commit!")
log.info("Validating configuration")
for msg in self.config.verify():
log.info(msg)
if 'check' in options:
return
do_it = self.yes_no("Apply changes and overwrite system "
"configuration ?", False)
if do_it is not False:
log.info("Applying configuration")
for msg in self.config.apply():
if 'interactive' in options:
apply = self.yes_no("%s\nPlease confirm" % msg, True)
if apply is False:
log.warning("Aborted commit on user request: "
"please verify system status")
return
else:
log.info(msg)
self.save_running_config()
self.needs_save = False
else:
log.info("Cancelled configuration commit")
def do_rollback(self, options):
'''
rollback
Return to the last committed configuration. Only the current
configuration is affected. The commit command can then be used to apply
the rolled-back configuration to the running system.
'''
# TODO Add more control to directly rollback the n-th version, view
# backup infos before rollback, etc.
backups = sorted(n for n in os.listdir(self.backup_dir)
if n.endswith(".lio"))
if not backups:
raise ConfigError("No backup found")
else:
backup_path = "%s/%s" % (self.backup_dir, backups[-1])
self.config.load(backup_path)
os.remove(backup_path)
log.warning("Rolled-back to %s" % backup_path)
def do_rollback(self, options):
'''
rollback
Return to the last committed configuration. Only the current
configuration is affected. The commit command can then be used to apply
the rolled-back configuration to the running system.
'''
# TODO Add more control to directly rollback the n-th version, view
# backup infos before rollback, etc.
backups = sorted(n for n in os.listdir(self.backup_dir)
if n.endswith(".lio"))
if not backups:
raise ConfigError("No backup found")
else:
backup_path = "%s/%s" % (self.backup_dir, backups[-1])
self.config.load(backup_path)
os.remove(backup_path)
log.warning("Rolled-back to %s" % backup_path)
def do_configure(self, options):
'''
configure
Switch to config mode. In this mode, you can safely edit a candidate
configuration for the system, and commit it only when it is ready.
'''
options = self.parse(options, 'configure', '')
if not self.interactive:
raise CliError("Cannot switch to config mode when running "
"non-interactively.")
else:
self.save_history()
self.clear_history()
# FIXME Preserve CliConfig session state, notably undo history
CliConfig(interactive=True).cmdloop()
self.clear_history()
self.load_history()
self.do_resync()
log.warning("[live] Back to live mode")
def do_diff(self, options):
'''
diff
Shows all differences between the current configuration and the live
running configuration.
'''
options = self.parse(options, 'diff', '')[1:]
diff = self.config.diff_live()
has_diffs = False
if diff['removed']:
has_diffs = True
log.warning("Objects removed in the current configuration:")
for node in diff['removed']:
log.info(" %s" % node.path_str)
if diff['created']:
has_diffs = True
log.warning("New objects in the current configuration:")
for node in diff['created']:
log.info(" %s" % node.path_str)
if diff['major']:
has_diffs = True
log.warning(
"Major attribute changes in the current configuration:")
for node in diff['major']:
log.info(" %s" % node.path_str)
if diff['minor']:
has_diffs = True
log.warning(
"Minor attribute changes in the current configuration:")
for node in diff['minor']:
log.info(" %s" % node.path_str)
if not has_diffs:
log.warning("Current configuration is in sync with live system")
else:
sys.stdout.write("\n")
def add_edit_level(self, path):
self.edit_levels.append(path)
log.warning("[edit] %s" % self.edit_levels[-1])
self.set_prompt(self.edit_levels[-1])
def add_edit_level(self, path):
self.edit_levels.append(path)
log.warning("[edit] %s" % self.edit_levels[-1])
self.set_prompt(self.edit_levels[-1])
