| Current Path : /lib/python2.7/site-packages/tuned/profiles/ |
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| Current File : //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