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# Copyright (C) 2015-2016 Red Hat, Inc. All rights reserved.
#
# This copyrighted material is made available to anyone wishing to use,
# modify, copy, or redistribute it subject to the terms and conditions
# of the GNU General Public License v.2.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
from .automatedproperties import AutomatedProperties
from .utils import job_obj_path_generate
from . import cfg
from .cfg import JOB_INTERFACE
import dbus
import threading
from . import background
# noinspection PyPep8Naming
class JobState(object):
def __init__(self, request=None):
self.rlock = threading.RLock()
self._percent = 0
self._complete = False
self._request = request
self._cond = threading.Condition(self.rlock)
self._ec = 0
self._stderr = ''
# This is an lvm command that is just taking too long and doesn't
# support background operation
if self._request:
# Faking the percentage when we don't have one
self._percent = 1
@property
def Percent(self):
with self.rlock:
return self._percent
@Percent.setter
def Percent(self, value):
with self.rlock:
self._percent = value
@property
def Complete(self):
with self.rlock:
if self._request:
self._complete = self._request.is_done()
return self._complete
@Complete.setter
def Complete(self, value):
with self.rlock:
self._complete = value
self._percent = 100
self._cond.notify_all()
@property
def GetError(self):
with self.rlock:
if self.Complete:
if self._request:
(rc, error) = self._request.get_errors()
return (rc, str(error))
else:
return (self._ec, self._stderr)
else:
return (-1, 'Job is not complete!')
def set_result(self, ec, msg):
with self.rlock:
self.Complete = True
self._ec = ec
self._stderr = msg
def dtor(self):
with self.rlock:
self._request = None
def Wait(self, timeout):
try:
with self._cond:
# Check to see if we are done, before we wait
if not self.Complete:
if timeout != -1:
self._cond.wait(timeout)
else:
self._cond.wait()
return self.Complete
except RuntimeError:
return False
@property
def Result(self):
with self.rlock:
if self._request:
return self._request.result()
return '/'
# noinspection PyPep8Naming
class Job(AutomatedProperties):
_Percent_meta = ('d', JOB_INTERFACE)
_Complete_meta = ('b', JOB_INTERFACE)
_Result_meta = ('o', JOB_INTERFACE)
_GetError_meta = ('(is)', JOB_INTERFACE)
def __init__(self, request, job_state=None):
super(Job, self).__init__(job_obj_path_generate())
self.set_interface(JOB_INTERFACE)
if job_state:
self.state = job_state
else:
self.state = JobState(request)
@property
def Percent(self):
return dbus.Double(float(self.state.Percent))
@Percent.setter
def Percent(self, value):
self.state.Percent = value
@property
def Complete(self):
return dbus.Boolean(self.state.Complete)
@Complete.setter
def Complete(self, value):
self.state.Complete = value
@property
def GetError(self):
return dbus.Struct(self.state.GetError, signature="(is)")
def set_result(self, ec, msg):
self.state.set_result(ec, msg)
@dbus.service.method(dbus_interface=JOB_INTERFACE)
def Remove(self):
if self.state.Complete:
cfg.om.remove_object(self, True)
self.state.dtor()
else:
raise dbus.exceptions.DBusException(
JOB_INTERFACE, 'Job is not complete!')
@dbus.service.method(dbus_interface=JOB_INTERFACE,
in_signature='i',
out_signature='b',
async_callbacks=('cb', 'cbe'))
def Wait(self, timeout, cb, cbe):
background.add_wait(self, timeout, cb, cbe)
@property
def Result(self):
return dbus.ObjectPath(self.state.Result)
@property
def lvm_id(self):
return str(id(self))
@property
def Uuid(self):
import uuid
return uuid.uuid1()
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