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tuned
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admin
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admin.py
from __future__ import print_function import tuned.admin from tuned.utils.commands import commands from tuned.profiles import Locator as profiles_locator from .exceptions import TunedAdminDBusException from tuned.exceptions import TunedException import tuned.consts as consts from tuned.utils.profile_recommender import ProfileRecommender import os import sys import errno import time import threading import logging class Admin(object): def __init__(self, dbus = True, debug = False, asynco = False, timeout = consts.ADMIN_TIMEOUT, log_level = logging.ERROR): self._dbus = dbus self._debug = debug self._async = asynco self._timeout = timeout self._cmd = commands(debug) self._profiles_locator = profiles_locator(consts.LOAD_DIRECTORIES) self._daemon_action_finished = threading.Event() self._daemon_action_profile = "" self._daemon_action_result = True self._daemon_action_errstr = "" self._controller = None self._log_token = None self._log_level = log_level self._profile_recommender = ProfileRecommender() if self._dbus: self._controller = tuned.admin.DBusController(consts.DBUS_BUS, consts.DBUS_INTERFACE, consts.DBUS_OBJECT, debug) try: self._controller.set_signal_handler(consts.SIGNAL_PROFILE_CHANGED, self._signal_profile_changed_cb) except TunedAdminDBusException as e: self._error(e) self._dbus = False def _error(self, message): print(message, file=sys.stderr) def _signal_profile_changed_cb(self, profile_name, result, errstr): # ignore successive signals if the signal is not yet processed if not self._daemon_action_finished.is_set(): self._daemon_action_profile = profile_name self._daemon_action_result = result self._daemon_action_errstr = errstr self._daemon_action_finished.set() def _tuned_is_running(self): try: os.kill(int(self._cmd.read_file(consts.PID_FILE)), 0) except OSError as e: return e.errno == errno.EPERM except (ValueError, IOError) as e: return False return True # run the action specified by the action_name with args def action(self, action_name, *args, **kwargs): if action_name is None or action_name == "": return False action = None action_dbus = None res = False try: action_dbus = getattr(self, "_action_dbus_" + action_name) except AttributeError as e: self._dbus = False try: action = getattr(self, "_action_" + action_name) except AttributeError as e: if not self._dbus: self._error(str(e) + ", action '%s' is not implemented" % action_name) return False if self._dbus: try: self._controller.set_on_exit_action( self._log_capture_finish) self._controller.set_action(action_dbus, *args, **kwargs) res = self._controller.run() except TunedAdminDBusException as e: self._error(e) self._dbus = False if not self._dbus: res = action(*args, **kwargs) return res def _print_profiles(self, profile_names): print("Available profiles:") for profile in profile_names: if profile[1] is not None and profile[1] != "": print(self._cmd.align_str("- %s" % profile[0], 30, "- %s" % profile[1])) else: print("- %s" % profile[0]) def _action_dbus_list_profiles(self): try: profile_names = self._controller.profiles2() except TunedAdminDBusException as e: # fallback to older API profile_names = [(profile, "") for profile in self._controller.profiles()] self._print_profiles(profile_names) self._action_dbus_active() return self._controller.exit(True) def _action_list_profiles(self): self._print_profiles(self._profiles_locator.get_known_names_summary()) self._action_active() return True def _dbus_get_active_profile(self): profile_name = self._controller.active_profile() if profile_name == "": profile_name = None self._controller.exit(True) return profile_name def _get_active_profile(self): profile_name, manual = self._cmd.get_active_profile() return profile_name def _get_profile_mode(self): (profile, manual) = self._cmd.get_active_profile() if manual is None: manual = profile is not None return consts.ACTIVE_PROFILE_MANUAL if manual else consts.ACTIVE_PROFILE_AUTO def _dbus_get_post_loaded_profile(self): profile_name = self._controller.post_loaded_profile() if profile_name == "": profile_name = None return profile_name def _get_post_loaded_profile(self): profile_name = self._cmd.get_post_loaded_profile() return profile_name def _print_profile_info(self, profile, profile_info): if profile_info[0] == True: print("Profile name:") print(profile_info[1]) print() print("Profile summary:") print(profile_info[2]) print() print("Profile description:") print(profile_info[3]) return True else: print("Unable to get information about profile '%s'" % profile) return False def _action_dbus_profile_info(self, profile = ""): if profile == "": profile = self._dbus_get_active_profile() if profile: res = self._print_profile_info(profile, self._controller.profile_info(profile)) else: print("No current active profile.") res = False return self._controller.exit(res) def _action_profile_info(self, profile = ""): if profile == "": try: profile = self._get_active_profile() if profile is None: print("No current active profile.") return False except TunedException as e: self._error(str(e)) return False return self._print_profile_info(profile, self._profiles_locator.get_profile_attrs(profile, [consts.PROFILE_ATTR_SUMMARY, consts.PROFILE_ATTR_DESCRIPTION], ["", ""])) def _print_profile_name(self, profile_name): if profile_name is None: print("No current active profile.") return False else: print("Current active profile: %s" % profile_name) return True def _print_post_loaded_profile(self, profile_name): if profile_name: print("Current post-loaded profile: %s" % profile_name) def _action_dbus_active(self): active_profile = self._dbus_get_active_profile() res = self._print_profile_name(active_profile) if res: post_loaded_profile = self._dbus_get_post_loaded_profile() self._print_post_loaded_profile(post_loaded_profile) return self._controller.exit(res) def _action_active(self): try: profile_name = self._get_active_profile() post_loaded_profile = self._get_post_loaded_profile() # The result of the DBus call active_profile includes # the post-loaded profile, so add it here as well if post_loaded_profile: if profile_name: profile_name += " " else: profile_name = "" profile_name += post_loaded_profile except TunedException as e: self._error(str(e)) return False if profile_name is not None and not self._tuned_is_running(): print("It seems that tuned daemon is not running, preset profile is not activated.") print("Preset profile: %s" % profile_name) if post_loaded_profile: print("Preset post-loaded profile: %s" % post_loaded_profile) return True res = self._print_profile_name(profile_name) self._print_post_loaded_profile(post_loaded_profile) return res def _print_profile_mode(self, mode): print("Profile selection mode: " + mode) def _action_dbus_profile_mode(self): mode, error = self._controller.profile_mode() self._print_profile_mode(mode) if error != "": self._error(error) return self._controller.exit(False) return self._controller.exit(True) def _action_profile_mode(self): try: mode = self._get_profile_mode() self._print_profile_mode(mode) return True except TunedException as e: self._error(str(e)) return False def _profile_print_status(self, ret, msg): if ret: if not self._controller.is_running() and not self._controller.start(): self._error("Cannot enable the tuning.") ret = False else: self._error("Unable to switch profile: %s" % msg) return ret def _action_dbus_wait_profile(self, profile_name): if time.time() >= self._timestamp + self._timeout: print("Operation timed out after waiting %d seconds(s), you may try to increase timeout by using --timeout command line option or using --async." % self._timeout) return self._controller.exit(False) if self._daemon_action_finished.isSet(): if self._daemon_action_profile == profile_name: if not self._daemon_action_result: print("Error changing profile: %s" % self._daemon_action_errstr) return self._controller.exit(False) return self._controller.exit(True) return False def _log_capture_finish(self): if self._log_token is None or self._log_token == "": return try: log_msgs = self._controller.log_capture_finish( self._log_token) self._log_token = None print(log_msgs, end = "", file = sys.stderr) sys.stderr.flush() except TunedAdminDBusException as e: self._error("Error: Failed to stop log capture. Restart the TuneD daemon to prevent a memory leak.") def _action_dbus_profile(self, profiles): if len(profiles) == 0: return self._action_dbus_list() profile_name = " ".join(profiles) if profile_name == "": return self._controller.exit(False) self._daemon_action_finished.clear() if not self._async and self._log_level is not None: # 25 seconds default DBus timeout + 5 secs safety margin timeout = self._timeout + 25 + 5 self._log_token = self._controller.log_capture_start( self._log_level, timeout) (ret, msg) = self._controller.switch_profile(profile_name) if self._async or not ret: return self._controller.exit(self._profile_print_status(ret, msg)) else: self._timestamp = time.time() self._controller.set_action(self._action_dbus_wait_profile, profile_name) return self._profile_print_status(ret, msg) def _restart_tuned(self): print("Trying to (re)start tuned...") (ret, msg) = self._cmd.execute(["service", "tuned", "restart"]) if ret == 0: print("TuneD (re)started, changes applied.") else: print("TuneD (re)start failed, you need to (re)start TuneD by hand for changes to apply.") def _set_profile(self, profile_name, manual): if profile_name in self._profiles_locator.get_known_names(): try: self._cmd.save_active_profile(profile_name, manual) self._restart_tuned() return True except TunedException as e: self._error(str(e)) self._error("Unable to switch profile.") return False else: self._error("Requested profile '%s' doesn't exist." % profile_name) return False def _action_profile(self, profiles): if len(profiles) == 0: return self._action_list_profiles() profile_name = " ".join(profiles) if profile_name == "": return False return self._set_profile(profile_name, True) def _action_dbus_auto_profile(self): profile_name = self._controller.recommend_profile() self._daemon_action_finished.clear() if not self._async and self._log_level is not None: # 25 seconds default DBus timeout + 5 secs safety margin timeout = self._timeout + 25 + 5 self._log_token = self._controller.log_capture_start( self._log_level, timeout) (ret, msg) = self._controller.auto_profile() if self._async or not ret: return self._controller.exit(self._profile_print_status(ret, msg)) else: self._timestamp = time.time() self._controller.set_action(self._action_dbus_wait_profile, profile_name) return self._profile_print_status(ret, msg) def _action_auto_profile(self): profile_name = self._profile_recommender.recommend() return self._set_profile(profile_name, False) def _action_dbus_recommend_profile(self): print(self._controller.recommend_profile()) return self._controller.exit(True) def _action_recommend_profile(self): print(self._profile_recommender.recommend()) return True def _action_dbus_verify_profile(self, ignore_missing): if ignore_missing: ret = self._controller.verify_profile_ignore_missing() else: ret = self._controller.verify_profile() if ret: print("Verification succeeded, current system settings match the preset profile.") else: print("Verification failed, current system settings differ from the preset profile.") print("You can mostly fix this by restarting the TuneD daemon, e.g.:") print(" systemctl restart tuned") print("or") print(" service tuned restart") print("Sometimes (if some plugins like bootloader are used) a reboot may be required.") print("See TuneD log file ('%s') for details." % consts.LOG_FILE) return self._controller.exit(ret) def _action_verify_profile(self, ignore_missing): print("Not supported in no_daemon mode.") return False def _action_dbus_off(self): # 25 seconds default DBus timeout + 5 secs safety margin timeout = 25 + 5 self._log_token = self._controller.log_capture_start( self._log_level, timeout) ret = self._controller.off() if not ret: self._error("Cannot disable active profile.") return self._controller.exit(ret) def _action_off(self): print("Not supported in no_daemon mode.") return False def _action_dbus_list(self, list_choice="profiles", verbose=False): """Print accessible profiles or plugins got from TuneD dbus api Keyword arguments: list_choice -- argument from command line deciding what will be listed verbose -- if True then list plugin's config options and their hints if possible. Functional only with plugin listing, with profiles this argument is omitted """ if list_choice == "profiles": return self._action_dbus_list_profiles() elif list_choice == "plugins": return self._action_dbus_list_plugins(verbose=verbose) def _action_list(self, list_choice="profiles", verbose=False): """Print accessible profiles or plugins with no daemon mode Keyword arguments: list_choice -- argument from command line deciding what will be listed verbose -- Plugins cannot be listed in this mode, so verbose argument is here only because argparse module always supplies verbose option and if verbose was not here it would result in error """ if list_choice == "profiles": return self._action_list_profiles() elif list_choice == "plugins": return self._action_list_plugins(verbose=verbose) def _action_dbus_list_plugins(self, verbose=False): """Print accessible plugins Keyword arguments: verbose -- if is set to True then parameters and hints are printed """ plugins = self._controller.get_plugins() for plugin in plugins.keys(): print(plugin) if not verbose or len(plugins[plugin]) == 0: continue hints = self._controller.get_plugin_hints(plugin) for parameter in plugins[plugin]: print("\t%s" %(parameter)) hint = hints.get(parameter, None) if hint: print("\t\t%s" %(hint)) return self._controller.exit(True) def _action_list_plugins(self, verbose=False): print("Not supported in no_daemon mode.") return False def _action_dbus_instance_acquire_devices(self, devices, instance): (ret, msg) = self._controller.instance_acquire_devices(devices, instance) if not ret: self._error("Unable to acquire devices: %s" % msg) return self._controller.exit(ret) def _action_instance_acquire_devices(self, devices, instance): print("Not supported in no_daemon mode.") return False def _action_dbus_get_instances(self, plugin_name): (ret, msg, pairs) = self._controller.get_instances(plugin_name) if not ret: self._error("Unable to list instances: %s" % msg) return self._controller.exit(False) for instance, plugin in pairs: print("%s (%s)" % (instance, plugin)) return self._controller.exit(True) def _action_get_instances(self, plugin_name): print("Not supported in no_daemon mode.") return False def _action_dbus_instance_get_devices(self, instance): (ret, msg, devices) = self._controller.instance_get_devices(instance) if not ret: self._error("Unable to list devices: %s" % msg) return self._controller.exit(False) for device in devices: print(device) return self._controller.exit(True) def _action_instance_get_devices(self, instance): print("Not supported in no_daemon mode.") return False
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