ok
Direktori : /proc/thread-self/root/lib/python2.7/site-packages/tuned/profiles/ |
Current File : //proc/thread-self/root/lib/python2.7/site-packages/tuned/profiles/loader.py |
import tuned.profiles.profile import tuned.profiles.variables from configobj import ConfigObj, ConfigObjError import tuned.consts as consts import os.path import collections import tuned.logs import re from tuned.profiles.exceptions import InvalidProfileException log = tuned.logs.get() class Loader(object): """ Profiles loader. """ __slots__ = ["_profile_locator", "_profile_merger", "_profile_factory", "_global_config", "_variables"] def __init__(self, profile_locator, profile_factory, profile_merger, global_config, variables): self._profile_locator = profile_locator self._profile_factory = profile_factory self._profile_merger = profile_merger self._global_config = global_config self._variables = variables def _create_profile(self, profile_name, config): return tuned.profiles.profile.Profile(profile_name, config) @classmethod def safe_name(cls, profile_name): return re.match(r'^[a-zA-Z0-9_.-]+$', profile_name) @property def profile_locator(self): return self._profile_locator def load(self, profile_names): if type(profile_names) is not list: profile_names = profile_names.split() profile_names = list(filter(self.safe_name, profile_names)) if len(profile_names) == 0: raise InvalidProfileException("No profile or invalid profiles were specified.") if len(profile_names) > 1: log.info("loading profiles: %s" % ", ".join(profile_names)) else: log.info("loading profile: %s" % profile_names[0]) profiles = [] processed_files = [] self._load_profile(profile_names, profiles, processed_files) if len(profiles) > 1: final_profile = self._profile_merger.merge(profiles) else: final_profile = profiles[0] final_profile.name = " ".join(profile_names) if "variables" in final_profile.units: self._variables.add_from_cfg(final_profile.units["variables"].options) del(final_profile.units["variables"]) # FIXME hack, do all variable expansions in one place self._expand_vars_in_devices(final_profile) return final_profile def _expand_vars_in_devices(self, profile): for unit in profile.units: profile.units[unit].devices = self._variables.expand(profile.units[unit].devices) def _load_profile(self, profile_names, profiles, processed_files): for name in profile_names: filename = self._profile_locator.get_config(name, processed_files) if filename is None: raise InvalidProfileException("Cannot find profile '%s' in '%s'." % (name, list(reversed(self._profile_locator._load_directories)))) processed_files.append(filename) config = self._load_config_data(filename) profile = self._profile_factory.create(name, config) if "include" in profile.options: include_name = self._variables.expand(profile.options.pop("include")) self._load_profile([include_name], profiles, processed_files) profiles.append(profile) def _expand_profile_dir(self, profile_dir, string): return re.sub(r'(?<!\\)\$\{i:PROFILE_DIR\}', profile_dir, string) def _load_config_data(self, file_name): try: config_obj = ConfigObj(file_name, raise_errors = True, list_values = False, interpolation = False) except ConfigObjError as e: raise InvalidProfileException("Cannot parse '%s'." % file_name, e) config = collections.OrderedDict() for section in list(config_obj.keys()): config[section] = collections.OrderedDict() try: keys = list(config_obj[section].keys()) except AttributeError: raise InvalidProfileException("Error parsing section '%s' in file '%s'." % (section, file_name)) for option in keys: config[section][option] = config_obj[section][option] dir_name = os.path.dirname(file_name) # TODO: Could we do this in the same place as the expansion of other functions? for section in config: for option in config[section]: config[section][option] = self._expand_profile_dir(dir_name, config[section][option]) # TODO: HACK, this needs to be solved in a better way (better config parser) for unit_name in config: if "script" in config[unit_name] and config[unit_name].get("script", None) is not None: script_path = os.path.join(dir_name, config[unit_name]["script"]) config[unit_name]["script"] = [os.path.normpath(script_path)] return config