def _show_message_in_main_thread(self, msg_fn, args):
"""
If running in the main thread, run the message dialog function and
return its return value. If running in a non-main thread, request the
message function to be called in the main thread.
:param msg_fn: message dialog function to be run
:type msg_fn: a function taking the same number of arguments as is the
length of the args param
:param args: arguments to be passed to the message dialog function
:type args: any
"""
if threadMgr.in_main_thread():
# call the function directly
return msg_fn(*args)
else:
# create a queue for the result returned by the function
ret_queue = Queue.Queue()
# request the function to be called in the main thread
self._send_show_message(msg_fn, args, ret_queue)
# wait and return the result from the queue
return ret_queue.get()
def _call_method(*args, **kwargs):
"""The new body for the decorated method.
"""
if threadMgr.in_main_thread():
# nothing special has to be done in the main thread
func(*args, **kwargs)
return
GLib.idle_add(_idle_method, args, kwargs)
def _call_method(*args, **kwargs):
"""The new body for the decorated method.
"""
if threadMgr.in_main_thread():
# nothing special has to be done in the main thread
func(*args, **kwargs)
return
GLib.idle_add(_idle_method, args, kwargs)
def _call_method(*args, **kwargs):
"""The new body for the decorated method. If needed, it uses closure
bound queue_instance variable which is valid until the reference to this
method is destroyed."""
if threadMgr.in_main_thread():
# nothing special has to be done in the main thread
return func(*args, **kwargs)
GLib.idle_add(_idle_method, queue_instance, args, kwargs)
return queue_instance.get()
def _call_method(*args, **kwargs):
"""The new body for the decorated method. If needed, it uses closure
bound queue_instance variable which is valid until the reference to this
method is destroyed."""
if threadMgr.in_main_thread():
# nothing special has to be done in the main thread
return func(*args, **kwargs)
GLib.idle_add(_idle_method, queue_instance, args, kwargs)
return queue_instance.get()
def handleException(self, dump_info):
"""
Our own handleException method doing some additional stuff before
calling the original python-meh's one.
:type dump_info: an instance of the meh.DumpInfo class
:see: python-meh's ExceptionHandler.handleException
"""
log.debug("running handleException")
exception_lines = traceback.format_exception(*dump_info.exc_info)
log.critical("\n".join(exception_lines))
ty = dump_info.exc_info.type
value = dump_info.exc_info.value
try:
gi.require_version("Gtk", "3.0")
from gi.repository import Gtk
# XXX: Gtk stopped raising RuntimeError if it fails to
# initialize. Horay! But will it stay like this? Let's be
# cautious and raise the exception on our own to work in both
# cases
initialized = Gtk.init_check(None)[0]
if not initialized:
raise RuntimeError()
# Attempt to grab the GUI initializing lock, do not block
if not self._gui_lock.acquire(False):
# the graphical interface is running, don't crash it by
# running another one potentially from a different thread
log.debug("Gtk running, queuing exception handler to the " "main loop")
GLib.idle_add(self._main_loop_handleException, dump_info)
else:
log.debug("Gtk not running, starting Gtk and running " "exception handler in it")
self._main_loop_handleException(dump_info)
except (RuntimeError, ImportError, ValueError):
log.debug("Gtk cannot be initialized")
# X not running (Gtk cannot be initialized)
if threadMgr.in_main_thread():
log.debug("In the main thread, running exception handler")
if issubclass(ty, CmdlineError) or not self._interactive:
if issubclass(ty, CmdlineError):
cmdline_error_msg = _(
"\nThe installation was stopped due to "
"incomplete spokes detected while running "
"in non-interactive cmdline mode. Since there "
"cannot be any questions in cmdline mode, "
"edit your kickstart file and retry "
"installation.\nThe exact error message is: "
"\n\n%s.\n\nThe installer will now terminate."
) % str(value)
else:
cmdline_error_msg = _(
"\nRunning in cmdline mode, no interactive debugging "
"allowed.\nThe exact error message is: "
"\n\n%s.\n\nThe installer will now terminate."
) % str(value)
# since there is no UI in cmdline mode and it is completely
# non-interactive, we can't show a message window asking the user
# to acknowledge the error; instead, print the error out and sleep
# for a few seconds before exiting the installer
print(cmdline_error_msg)
time.sleep(10)
sys.exit(1)
else:
print("\nAn unknown error has occured, look at the " "/tmp/anaconda-tb* file(s) for more details")
# in the main thread, run exception handler
self._main_loop_handleException(dump_info)
else:
log.debug("In a non-main thread, sending a message with " "exception data")
# not in the main thread, just send message with exception
# data and let message handler run the exception handler in
# the main thread
exc_info = dump_info.exc_info
hubQ.send_exception((exc_info.type, exc_info.value, exc_info.stack))
def gtk_batch_map(action, items, args=(), pre_func=None, batch_size=1):
"""
Function that maps an action on items in a way that makes the action run in
the main thread, but without blocking the main thread for a noticeable
time. If a pre-processing function is given it is mapped on the items first
before the action happens in the main thread.
.. DANGER::
MUST NOT BE CALLED NOR WAITED FOR FROM THE MAIN THREAD.
:param action: any action that has to be done on the items in the main
thread
:type action: (action_item, \\*args) -> None
:param items: an iterable of items that the action should be mapped on
:type items: iterable
:param args: additional arguments passed to the action function
:type args: tuple
:param pre_func: a function that is mapped on the items before they are
passed to the action function
:type pre_func: item -> action_item
:param batch_size: how many items should be processed in one run in the main loop
:raise AssertionError: if called from the main thread
:return: None
"""
assert(not threadMgr.in_main_thread())
def preprocess(queue_instance):
if pre_func:
for item in items:
queue_instance.put(pre_func(item))
else:
for item in items:
queue_instance.put(item)
queue_instance.put(TERMINATOR)
def process_one_batch(arguments):
(queue_instance, action, done_event) = arguments
tstamp_start = time.time()
tstamp = time.time()
# process as many batches as user shouldn't notice
while tstamp - tstamp_start < NOTICEABLE_FREEZE:
for _i in range(batch_size):
try:
action_item = queue_instance.get_nowait()
if action_item is TERMINATOR:
# all items processed, tell we are finished and return
done_event.set()
return False
else:
# run action on the item
action(action_item, *args)
except queue.Empty:
# empty queue_instance, reschedule to run later
return True
tstamp = time.time()
# out of time but something left, reschedule to run again later
return True
item_queue_instance = queue.Queue()
done_event = threading.Event()
# we don't want to log the whole list, type and address is enough
log.debug("Starting applying %s on %s", action, object.__repr__(items))
# start a thread putting preprocessed items into the queue_instance
threadMgr.add(AnacondaThread(prefix="AnaGtkBatchPre",
target=preprocess,
args=(item_queue_instance,)))
GLib.idle_add(process_one_batch, (item_queue_instance, action, done_event))
done_event.wait()
log.debug("Finished applying %s on %s", action, object.__repr__(items))
def handleException(self, dump_info):
"""
Our own handleException method doing some additional stuff before
calling the original python-meh's one.
:type dump_info: an instance of the meh.DumpInfo class
:see: python-meh's ExceptionHandler.handleException
"""
log.debug("running handleException")
ty = dump_info.exc_info.type
value = dump_info.exc_info.value
if (issubclass(ty, blivet.errors.StorageError) and value.hardware_fault) \
or (issubclass(ty, OSError) and value.errno == errno.EIO):
# hardware fault or '[Errno 5] Input/Output error'
hw_error_msg = _("The installation was stopped due to what "
"seems to be a problem with your hardware. "
"The exact error message is:\n\n%s.\n\n "
"The installer will now terminate.") % str(value)
self.intf.messageWindow(_("Hardware error occured"), hw_error_msg)
sys.exit(0)
else:
try:
from gi.repository import Gtk
# XXX: Gtk stopped raising RuntimeError if it fails to
# initialize. Horay! But will it stay like this? Let's be
# cautious and raise the exception on our own to work in both
# cases
initialized = Gtk.init_check(None)[0]
if not initialized:
raise RuntimeError()
if Gtk.main_level() > 0:
# main loop is running, don't crash it by running another one
# potentially from a different thread
log.debug("Gtk running, queuing exception handler to the "
"main loop")
GLib.idle_add(self.run_handleException, dump_info)
else:
log.debug("Gtk not running, starting Gtk and running "
"exception handler in it")
super(AnacondaExceptionHandler, self).handleException(
dump_info)
except RuntimeError:
log.debug("Gtk cannot be initialized")
# X not running (Gtk cannot be initialized)
if threadMgr.in_main_thread():
log.debug("In the main thread, running exception handler")
print "An unknown error has occured, look at the "\
"/tmp/anaconda-tb* file(s) for more details"
# in the main thread, run exception handler
super(AnacondaExceptionHandler, self).handleException(
dump_info)
else:
log.debug("In a non-main thread, sending a message with "
"exception data")
# not in the main thread, just send message with exception
# data and let message handler run the exception handler in
# the main thread
exc_info = dump_info.exc_info
hubQ.send_exception((exc_info.type,
exc_info.value,
exc_info.stack))
def handleException(self, dump_info):
"""
Our own handleException method doing some additional stuff before
calling the original python-meh's one.
:type dump_info: an instance of the meh.DumpInfo class
:see: python-meh's ExceptionHandler.handleException
"""
log.debug("running handleException")
exception_lines = traceback.format_exception(*dump_info.exc_info)
log.critical("\n".join(exception_lines))
ty = dump_info.exc_info.type
value = dump_info.exc_info.value
try:
gi.require_version("Gtk", "3.0")
from gi.repository import Gtk
# XXX: Gtk stopped raising RuntimeError if it fails to
# initialize. Horay! But will it stay like this? Let's be
# cautious and raise the exception on our own to work in both
# cases
initialized = Gtk.init_check(None)[0]
if not initialized:
raise RuntimeError()
# Attempt to grab the GUI initializing lock, do not block
if not self._gui_lock.acquire(False):
# the graphical interface is running, don't crash it by
# running another one potentially from a different thread
log.debug("Gtk running, queuing exception handler to the "
"main loop")
GLib.idle_add(self._main_loop_handleException, dump_info)
else:
log.debug("Gtk not running, starting Gtk and running "
"exception handler in it")
self._main_loop_handleException(dump_info)
except (RuntimeError, ImportError, ValueError):
log.debug("Gtk cannot be initialized")
# X not running (Gtk cannot be initialized)
if threadMgr.in_main_thread():
log.debug("In the main thread, running exception handler")
if issubclass(ty, CmdlineError) or not self._interactive:
if issubclass(ty, CmdlineError):
cmdline_error_msg = _(
"\nThe installation was stopped due to "
"incomplete spokes detected while running "
"in non-interactive cmdline mode. Since there "
"cannot be any questions in cmdline mode, "
"edit your kickstart file and retry "
"installation.\nThe exact error message is: "
"\n\n%s.\n\nThe installer will now terminate."
) % str(value)
else:
cmdline_error_msg = _(
"\nRunning in cmdline mode, no interactive debugging "
"allowed.\nThe exact error message is: "
"\n\n%s.\n\nThe installer will now terminate."
) % str(value)
# since there is no UI in cmdline mode and it is completely
# non-interactive, we can't show a message window asking the user
# to acknowledge the error; instead, print the error out and sleep
# for a few seconds before exiting the installer
print(cmdline_error_msg)
time.sleep(10)
sys.exit(1)
else:
print("\nAn unknown error has occured, look at the "
"/tmp/anaconda-tb* file(s) for more details")
# in the main thread, run exception handler
self._main_loop_handleException(dump_info)
else:
log.debug("In a non-main thread, sending a message with "
"exception data")
# not in the main thread, just send message with exception
# data and let message handler run the exception handler in
# the main thread
exc_info = dump_info.exc_info
hubQ.send_exception(
(exc_info.type, exc_info.value, exc_info.stack))
def handleException(self, dump_info):
"""
Our own handleException method doing some additional stuff before
calling the original python-meh's one.
:type dump_info: an instance of the meh.DumpInfo class
:see: python-meh's ExceptionHandler.handleException
"""
log.debug("running handleException")
exception_lines = traceback.format_exception(*dump_info.exc_info)
log.debug("\n".join(exception_lines))
ty = dump_info.exc_info.type
value = dump_info.exc_info.value
if (issubclass(ty, blivet.errors.StorageError) and value.hardware_fault) \
or (issubclass(ty, OSError) and value.errno == errno.EIO):
# hardware fault or '[Errno 5] Input/Output error'
hw_error_msg = _("The installation was stopped due to what "
"seems to be a problem with your hardware. "
"The exact error message is:\n\n%s.\n\n "
"The installer will now terminate.") % str(value)
self.intf.messageWindow(_("Hardware error occured"), hw_error_msg)
sys.exit(0)
else:
try:
from gi.repository import Gtk
# XXX: Gtk stopped raising RuntimeError if it fails to
# initialize. Horay! But will it stay like this? Let's be
# cautious and raise the exception on our own to work in both
# cases
initialized = Gtk.init_check(None)[0]
if not initialized:
raise RuntimeError()
if Gtk.main_level() > 0:
# main loop is running, don't crash it by running another one
# potentially from a different thread
log.debug("Gtk running, queuing exception handler to the "
"main loop")
GLib.idle_add(self.run_handleException, dump_info)
else:
log.debug("Gtk not running, starting Gtk and running "
"exception handler in it")
super(AnacondaExceptionHandler, self).handleException(
dump_info)
except (RuntimeError, ImportError):
log.debug("Gtk cannot be initialized")
# X not running (Gtk cannot be initialized)
if threadMgr.in_main_thread():
log.debug("In the main thread, running exception handler")
if (issubclass (ty, CmdlineError)):
cmdline_error_msg = _("\nThe installation was stopped due to "
"incomplete spokes detected while running "
"in non-interactive cmdline mode. Since there "
"can not be any questions in cmdline mode, "
"edit your kickstart file and retry "
"installation.\nThe exact error message is: "
"\n\n%s.\n\nThe installer will now terminate.") % str(value)
# since there is no UI in cmdline mode and it is completely
# non-interactive, we can't show a message window asking the user
# to acknowledge the error; instead, print the error out and sleep
# for a few seconds before exiting the installer
print(cmdline_error_msg)
time.sleep(10)
sys.exit(0)
else:
print("\nAn unknown error has occured, look at the "
"/tmp/anaconda-tb* file(s) for more details")
# in the main thread, run exception handler
super(AnacondaExceptionHandler, self).handleException(
dump_info)
else:
log.debug("In a non-main thread, sending a message with "
"exception data")
# not in the main thread, just send message with exception
# data and let message handler run the exception handler in
# the main thread
exc_info = dump_info.exc_info
hubQ.send_exception((exc_info.type,
exc_info.value,
exc_info.stack))
def handleException(self, dump_info):
"""
Our own handleException method doing some additional stuff before
calling the original python-meh's one.
:type dump_info: an instance of the meh.DumpInfo class
:see: python-meh's ExceptionHandler.handleException
"""
log.debug("running handleException")
ty = dump_info.exc_info.type
value = dump_info.exc_info.value
if (issubclass(ty, blivet.errors.StorageError) and value.hardware_fault) \
or (issubclass(ty, OSError) and value.errno == errno.EIO):
# hardware fault or '[Errno 5] Input/Output error'
hw_error_msg = _("The installation was stopped due to what "
"seems to be a problem with your hardware. "
"The exact error message is:\n\n%s.\n\n "
"The installer will now terminate.") % str(value)
self.intf.messageWindow(_("Hardware error occured"), hw_error_msg)
sys.exit(0)
else:
try:
from gi.repository import Gtk
# XXX: Gtk stopped raising RuntimeError if it fails to
# initialize. Horay! But will it stay like this? Let's be
# cautious and raise the exception on our own to work in both
# cases
initialized = Gtk.init_check(None)[0]
if not initialized:
raise RuntimeError()
if Gtk.main_level() > 0:
# main loop is running, don't crash it by running another one
# potentially from a different thread
log.debug("Gtk running, queuing exception handler to the "
"main loop")
GLib.idle_add(self.run_handleException, dump_info)
else:
log.debug("Gtk not running, starting Gtk and running "
"exception handler in it")
super(AnacondaExceptionHandler,
self).handleException(dump_info)
except RuntimeError:
log.debug("Gtk cannot be initialized")
# X not running (Gtk cannot be initialized)
if threadMgr.in_main_thread():
log.debug("In the main thread, running exception handler")
print "An unknown error has occured, look at the "\
"/tmp/anaconda-tb* file(s) for more details"
# in the main thread, run exception handler
super(AnacondaExceptionHandler,
self).handleException(dump_info)
else:
log.debug("In a non-main thread, sending a message with "
"exception data")
# not in the main thread, just send message with exception
# data and let message handler run the exception handler in
# the main thread
exc_info = dump_info.exc_info
hubQ.send_exception(
(exc_info.type, exc_info.value, exc_info.stack))
def handleException(self, dump_info):
"""
Our own handleException method doing some additional stuff before
calling the original python-meh's one.
:type dump_info: an instance of the meh.DumpInfo class
:see: python-meh's ExceptionHandler.handleException
"""
log.debug("running handleException")
ty = dump_info.exc_info.type
value = dump_info.exc_info.value
if issubclass(ty, blivet.errors.StorageError) and value.hardware_fault:
hw_error_msg = _("The installation was stopped due to what "
"seems to be a problem with your hardware. "
"The exact error message is:\n\n%s.\n\n "
"The installer will now terminate.") % str(value)
self.intf.messageWindow(_("Hardware error occured"), hw_error_msg)
sys.exit(0)
else:
try:
# pylint: disable-msg=E0611
from gi.repository import Gtk
# XXX: Gtk stopped raising RuntimeError if it fails to
# initialize. Horay! But will it stay like this? Let's be
# cautious and raise the exception on our own to work in both
# cases
(initialized, args) = Gtk.init_check(None)
if not initialized:
raise RuntimeError()
if Gtk.main_level() > 0:
# main loop is running, don't crash it by running another one
# potentially from a different thread
log.debug("Gtk running, queuing exception handler to the "
"main loop")
GLib.idle_add(self.run_handleException, dump_info)
else:
log.debug("Gtk not running, starting Gtk and running "
"exception handler in it")
super(AnacondaExceptionHandler,
self).handleException(dump_info)
except RuntimeError:
log.debug("Gtk cannot be initialized")
# X not running (Gtk cannot be initialized)
if threadMgr.in_main_thread():
log.debug("In the main thread, running exception handler")
if (issubclass(ty, CmdlineError)):
cmdline_error_msg = _(
"\nThe installation was stopped due to an "
"error which occurred while running in "
"non-interactive cmdline mode. Since there can "
"not be any questions in cmdline mode, edit "
"your kickstart file and retry installation. "
"\nThe exact error message is: \n\n%s. \n\nThe "
"installer will now terminate.") % str(value)
# since there is no UI in cmdline mode and it is completely
# non-interactive, we can't show a message window asking the user
# to acknowledge the error; instead, print the error out and sleep
# for a few seconds before exiting the installer
print(cmdline_error_msg)
time.sleep(180)
sys.exit()
else:
print "An unknown error has occured, look at the "\
"/tmp/anaconda-tb* file(s) for more details"
# in the main thread, run exception handler
super(AnacondaExceptionHandler,
self).handleException(dump_info)
else:
log.debug("In a non-main thread, sending a message with "
"exception data")
# not in the main thread, just send message with exception
# data and let message handler run the exception handler in
# the main thread
exc_info = dump_info.exc_info
hubQ.send_exception(
(exc_info.type, exc_info.value, exc_info.stack))
def gtk_batch_map(action, items, args=(), pre_func=None, batch_size=1):
"""
Function that maps an action on items in a way that makes the action run in
the main thread, but without blocking the main thread for a noticeable
time. If a pre-processing function is given it is mapped on the items first
before the action happens in the main thread.
.. DANGER::
MUST NOT BE CALLED NOR WAITED FOR FROM THE MAIN THREAD.
:param action: any action that has to be done on the items in the main
thread
:type action: (action_item, \\*args) -> None
:param items: an iterable of items that the action should be mapped on
:type items: iterable
:param args: additional arguments passed to the action function
:type args: tuple
:param pre_func: a function that is mapped on the items before they are
passed to the action function
:type pre_func: item -> action_item
:param batch_size: how many items should be processed in one run in the main loop
:raise AssertionError: if called from the main thread
:return: None
"""
assert (not threadMgr.in_main_thread())
def preprocess(queue_instance):
if pre_func:
for item in items:
queue_instance.put(pre_func(item))
else:
for item in items:
queue_instance.put(item)
queue_instance.put(TERMINATOR)
def process_one_batch(arguments):
(queue_instance, action, done_event) = arguments
tstamp_start = time.time()
tstamp = time.time()
# process as many batches as user shouldn't notice
while tstamp - tstamp_start < NOTICEABLE_FREEZE:
for _i in range(batch_size):
try:
action_item = queue_instance.get_nowait()
if action_item is TERMINATOR:
# all items processed, tell we are finished and return
done_event.set()
return False
else:
# run action on the item
action(action_item, *args)
except queue.Empty:
# empty queue_instance, reschedule to run later
return True
tstamp = time.time()
# out of time but something left, reschedule to run again later
return True
item_queue_instance = queue.Queue()
done_event = threading.Event()
# we don't want to log the whole list, type and address is enough
log.debug("Starting applying %s on %s", action, object.__repr__(items))
# start a thread putting preprocessed items into the queue_instance
threadMgr.add(
AnacondaThread(prefix="AnaGtkBatchPre",
target=preprocess,
args=(item_queue_instance, )))
GLib.idle_add(process_one_batch, (item_queue_instance, action, done_event))
done_event.wait()
log.debug("Finished applying %s on %s", action, object.__repr__(items))