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__init__.py 0000644 00000000027 15051664462 0006665 0 ustar 00 from .manager import *
manager.py 0000644 00000013654 15051664462 0006552 0 ustar 00 import collections
import os
import re
import traceback
import tuned.exceptions
import tuned.logs
import tuned.plugins.exceptions
import tuned.consts as consts
from tuned.utils.global_config import GlobalConfig
from tuned.utils.commands import commands
log = tuned.logs.get()
__all__ = ["Manager"]
class Manager(object):
"""
Manager creates plugin instances and keeps a track of them.
"""
def __init__(self, plugins_repository, monitors_repository,
def_instance_priority, hardware_inventory, config = None):
super(Manager, self).__init__()
self._plugins_repository = plugins_repository
self._monitors_repository = monitors_repository
self._def_instance_priority = def_instance_priority
self._hardware_inventory = hardware_inventory
self._instances = []
self._plugins = []
self._config = config or GlobalConfig()
self._cmd = commands()
@property
def plugins(self):
return self._plugins
@property
def instances(self):
return self._instances
@property
def plugins_repository(self):
return self._plugins_repository
def _unit_matches_cpuinfo(self, unit):
if unit.cpuinfo_regex is None:
return True
cpuinfo_string = self._config.get(consts.CFG_CPUINFO_STRING)
if cpuinfo_string is None:
cpuinfo_string = self._cmd.read_file("/proc/cpuinfo")
return re.search(unit.cpuinfo_regex, cpuinfo_string,
re.MULTILINE) is not None
def _unit_matches_uname(self, unit):
if unit.uname_regex is None:
return True
uname_string = self._config.get(consts.CFG_UNAME_STRING)
if uname_string is None:
uname_string = " ".join(os.uname())
return re.search(unit.uname_regex, uname_string,
re.MULTILINE) is not None
def create(self, instances_config):
instance_info_list = []
for instance_name, instance_info in list(instances_config.items()):
if not instance_info.enabled:
log.debug("skipping disabled instance '%s'" % instance_name)
continue
if not self._unit_matches_cpuinfo(instance_info):
log.debug("skipping instance '%s', cpuinfo does not match" % instance_name)
continue
if not self._unit_matches_uname(instance_info):
log.debug("skipping instance '%s', uname does not match" % instance_name)
continue
instance_info.options.setdefault("priority", self._def_instance_priority)
instance_info.options["priority"] = int(instance_info.options["priority"])
instance_info_list.append(instance_info)
instance_info_list.sort(key=lambda x: x.options["priority"])
plugins_by_name = collections.OrderedDict()
for instance_info in instance_info_list:
instance_info.options.pop("priority")
plugins_by_name[instance_info.type] = None
for plugin_name, none in list(plugins_by_name.items()):
try:
plugin = self._plugins_repository.create(plugin_name)
plugins_by_name[plugin_name] = plugin
self._plugins.append(plugin)
except tuned.plugins.exceptions.NotSupportedPluginException:
log.info("skipping plugin '%s', not supported on your system" % plugin_name)
continue
except Exception as e:
log.error("failed to initialize plugin %s" % plugin_name)
log.exception(e)
continue
instances = []
for instance_info in instance_info_list:
plugin = plugins_by_name[instance_info.type]
if plugin is None:
continue
log.debug("creating '%s' (%s)" % (instance_info.name, instance_info.type))
new_instance = plugin.create_instance(instance_info.name, instance_info.devices, instance_info.devices_udev_regex, \
instance_info.script_pre, instance_info.script_post, instance_info.options)
instances.append(new_instance)
for instance in instances:
instance.plugin.init_devices()
instance.plugin.assign_free_devices(instance)
instance.plugin.initialize_instance(instance)
# At this point we should be able to start the HW events
# monitoring/processing thread, without risking race conditions
self._hardware_inventory.start_processing_events()
self._instances.extend(instances)
def _try_call(self, caller, exc_ret, f, *args, **kwargs):
try:
return f(*args, **kwargs)
except Exception as e:
trace = traceback.format_exc()
log.error("BUG: Unhandled exception in %s: %s"
% (caller, str(e)))
log.error(trace)
return exc_ret
def destroy_all(self):
for instance in self._instances:
log.debug("destroying instance %s" % instance.name)
self._try_call("destroy_all", None,
instance.plugin.destroy_instance,
instance)
for plugin in self._plugins:
log.debug("cleaning plugin '%s'" % plugin.name)
self._try_call("destroy_all", None, plugin.cleanup)
del self._plugins[:]
del self._instances[:]
def update_monitors(self):
for monitor in self._monitors_repository.monitors:
log.debug("updating monitor %s" % monitor)
self._try_call("update_monitors", None, monitor.update)
def start_tuning(self):
for instance in self._instances:
self._try_call("start_tuning", None,
instance.apply_tuning)
def verify_tuning(self, ignore_missing):
ret = True
for instance in self._instances:
res = self._try_call("verify_tuning", False,
instance.verify_tuning, ignore_missing)
if res == False:
ret = False
return ret
def update_tuning(self):
for instance in self._instances:
self._try_call("update_tuning", None,
instance.update_tuning)
# rollback parameter is a helper telling plugins whether soft or full
# rollback is needed, e.g. for bootloader plugin we need grub.cfg
# tuning to persist across reboots and restarts of the daemon, so in
# this case the rollback is usually set to consts.ROLLBACK_SOFT,
# but we also need to clean it all up when TuneD is disabled or the
# profile is changed. In this case the rollback is set to
# consts.ROLLBACK_FULL. In practice it means to remove all temporal
# or helper files, unpatch third party config files, etc.
def stop_tuning(self, rollback = consts.ROLLBACK_SOFT):
self._hardware_inventory.stop_processing_events()
for instance in reversed(self._instances):
self._try_call("stop_tuning", None,
instance.unapply_tuning, rollback)
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