from tuned.utils.config_parser import ConfigParser, Error
from tuned.exceptions import TunedException
import os
PPD_POWER_SAVER = "power-saver"
PPD_PERFORMANCE = "performance"
MAIN_SECTION = "main"
PROFILES_SECTION = "profiles"
DEFAULT_PROFILE_OPTION = "default"
class PPDConfig:
def __init__(self, config_file):
self.load_from_file(config_file)
@property
def default_profile(self):
return self._default_profile
@property
def ppd_to_tuned(self):
return self._ppd_to_tuned
@property
def tuned_to_ppd(self):
return self._tuned_to_ppd
def load_from_file(self, config_file):
cfg = ConfigParser()
if not os.path.isfile(config_file):
raise TunedException("Configuration file '%s' does not exist" % config_file)
try:
cfg.read(config_file)
except Error:
raise TunedException("Error parsing the configuration file '%s'" % config_file)
if PROFILES_SECTION not in cfg:
raise TunedException("Missing profiles section in the configuration file '%s'" % config_file)
self._ppd_to_tuned = dict(cfg[PROFILES_SECTION])
if not all(isinstance(mapped_profile, str) for mapped_profile in self._ppd_to_tuned.values()):
raise TunedException("Invalid profile mapping in the configuration file '%s'" % config_file)
if len(set(self._ppd_to_tuned.values())) != len(self._ppd_to_tuned):
raise TunedException("Duplicate profile mapping in the configuration file '%s'" % config_file)
self._tuned_to_ppd = {v: k for k, v in self._ppd_to_tuned.items()}
if PPD_POWER_SAVER not in self._ppd_to_tuned:
raise TunedException("Missing power-saver profile in the configuration file '%s'" % config_file)
if PPD_PERFORMANCE not in self._ppd_to_tuned:
raise TunedException("Missing performance profile in the configuration file '%s'" % config_file)
if MAIN_SECTION not in cfg or DEFAULT_PROFILE_OPTION not in cfg[MAIN_SECTION]:
raise TunedException("Missing default profile in the configuration file '%s'" % config_file)
self._default_profile = cfg[MAIN_SECTION][DEFAULT_PROFILE_OPTION]
if self._default_profile not in self._ppd_to_tuned:
raise TunedException("Unknown default profile '%s'" % self._default_profile)
