def process_input(self, user_input):
"""Process input from the screens.
:param user_input: User input string.
:type user_input: String.
:raises: ExitMainLoop or any other kind of exception from screen processing.
"""
# process the input, if it wasn't processed (valid)
# increment the error counter
try:
result = self._process_input(user_input)
except ExitMainLoop: # pylint: disable=try-except-raise
raise
except Exception: # pylint: disable=broad-except
App.get_event_loop().enqueue_signal(ExceptionSignal(self))
return
if result.was_successful():
self._input_error_counter = 0
else:
self._input_error_counter += 1
App.get_scheduler().process_input_result(
result, self.input_error_threshold_exceeded)
def __init__(self, callback=None, source=None):
"""Class to handle input from the terminal.
This class is designed to be instantiated on place where it should be used.
The main method is `get_input()` which is non-blocking asynchronous call. It can be used
as synchronous call be calling the `wait_on_input` method.
To get result from this class use the `value` property.
:param callback: You can specify callback which will be called when user give input.
:type callback: Callback function with one argument which will be user input.
:param source: Source of this input. It will be helpful in case of debugging an issue.
:type source: Class which will process an input from this InputHandler.
"""
super().__init__()
self._input = None
self._input_callback = callback
self._input_received = False
self._input_successful = False
self._skip_concurrency_check = False
self._source = source
App.get_event_loop().register_signal_handler(
InputReadySignal, self._input_received_handler)
def redraw(self):
"""Emit signal to initiate draw.
Add RenderScreenSignal to the event loop.
"""
signal = self.create_signal(RenderScreenSignal)
App.get_event_loop().enqueue_signal(signal)
def close(self):
"""Emit signal to close this screen.
Add CloseScreenSignal to the event loop.
"""
signal = self.create_signal(CloseScreenSignal)
App.get_event_loop().enqueue_signal(signal)
def run(self):
"""Run the `run_input` method and propagate input outside.
Do not call this method directly. It will be called by InputThreadManager.
"""
data = self.get_input()
App.get_event_loop().enqueue_signal(InputReceivedSignal(self, data))
def test_emit(self):
connect_screen = UIScreen()
App.initialize(scheduler=MagicMock())
connect_screen.connect(TestSignal, self._callback)
connect_screen.emit(TestSignal(self))
App.get_event_loop().process_signals()
self.assertTrue(self.callback_called)
def emit(self, signal):
"""Emit the signal.
This will add `signal` to the event loop.
:param signal: signal to emit
:type signal: instance of class based on `simpleline.event_loop.AbstractSignal`
"""
App.get_event_loop().enqueue_signal(signal)
def test_basic_connect(self):
connect_screen = UIScreen()
App.initialize(scheduler=MagicMock())
connect_screen.connect(SignalMock, self._callback)
App.get_event_loop().enqueue_signal(SignalMock(self))
App.get_event_loop().process_signals()
self.assertTrue(self.callback_called)
def emit_failed_input_ready_signal(self):
"""Emit the InputReadySignal with failed state."""
handler_source = self.source
signal_source = self._get_request_source()
new_signal = InputReadySignal(source=signal_source,
input_handler_source=handler_source,
data="",
success=False)
App.get_event_loop().enqueue_signal(new_signal)
def tearDown(self):
super().tearDown()
self._thread_event_wait_for_outer.set()
for t in self._threads:
t.join()
# process InputReceivedSignal
App.get_event_loop().process_signals()
# process InputReadySignal
App.get_event_loop().process_signals()
def wait_on_input(self):
"""Blocks execution till the user input is received.
Events will works as expected during this blocking.
Please check the `input_successful` method to test the input.
"""
# we already received input from user
if self._input_received:
return
while not self._input_received:
App.get_event_loop().process_signals(InputReadySignal)
def connect(self, signal, callback, data=None):
"""Connect this class method with given signal.
:param signal: signal class which you want to connect
:type signal: class based on `simpleline.event_loop.AbstractSignal`
:param callback: the callback function
:type callback: func(event_message, data)
:param data: Data you want to pass to the callback
:type data: Anything
"""
App.get_event_loop().register_signal_handler(signal, callback, data)
def setup(self, args):
"""Do additional setup right before this screen is used.
It is mandatory to call this ancestor method in the child class to set ready status.
:param args: arguments for the setup
:type args: array of values
:return: whether this screen should be scheduled or not
:rtype: bool
"""
self._screen_ready = True
App.get_event_loop().register_signal_source(self)
return True
def emit_input_ready_signal(self, input_data):
"""Emit the InputReadySignal signal with collected input data.
:param input_data: Input data received.
:type input_data: str
"""
handler_source = self.source
signal_source = self._get_request_source()
new_signal = InputReadySignal(source=signal_source,
input_handler_source=handler_source,
data=input_data,
success=True)
App.get_event_loop().enqueue_signal(new_signal)
def exception_msg_handler(signal, data):
"""
Handler for the ExceptionSignal signal.
:param signal: event data
:type signal: (event_type, message_data)
:param data: additional data
:type data: any
"""
global exception_processed
if exception_processed:
# get data from the event data structure
exception_info = signal.exception_info
stack_trace = "\n" + App.get_scheduler().dump_stack()
log.error(stack_trace)
# exception_info is a list
sys.excepthook(*exception_info)
else:
# show only the first exception do not spam user with others
exception_processed = True
loop = App.get_event_loop()
# start new loop for handling the exception
# this will stop processing all the old signals and prevent raising new exceptions
loop.execute_new_loop(signal)
def start_rescue_mode_ui(anaconda):
"""Start the rescue mode UI."""
ksdata_rescue = None
if anaconda.ksdata.rescue.seen:
ksdata_rescue = anaconda.ksdata.rescue
scripts = anaconda.ksdata.scripts
storage = anaconda.storage
reboot = True
if conf.target.is_image:
reboot = False
if flags.automatedInstall and anaconda.ksdata.reboot.action not in [
KS_REBOOT, KS_SHUTDOWN
]:
reboot = False
rescue = Rescue(storage, ksdata_rescue, reboot, scripts)
rescue.initialize()
# We still want to choose from multiple roots, or unlock encrypted devices
# if needed, so we run UI even for kickstarts (automated install).
App.initialize()
loop = App.get_event_loop()
loop.set_quit_callback(tui_quit_callback)
spoke = RescueModeSpoke(rescue)
ScreenHandler.schedule_screen(spoke)
App.run()
def start_rescue_mode_ui(anaconda):
"""Start the rescue mode UI."""
ksdata_rescue = None
if anaconda.ksdata.rescue.seen:
ksdata_rescue = anaconda.ksdata.rescue
scripts = anaconda.ksdata.scripts
storage = anaconda.storage
reboot = True
if conf.target.is_image:
reboot = False
if flags.automatedInstall and anaconda.ksdata.reboot.action not in [KS_REBOOT, KS_SHUTDOWN]:
reboot = False
rescue = Rescue(storage, ksdata_rescue, reboot, scripts)
rescue.initialize()
# We still want to choose from multiple roots, or unlock encrypted devices
# if needed, so we run UI even for kickstarts (automated install).
App.initialize()
loop = App.get_event_loop()
loop.set_quit_callback(tui_quit_callback)
spoke = RescueModeSpoke(rescue)
ScreenHandler.schedule_screen(spoke)
App.run()
def exception_msg_handler(signal, data):
"""
Handler for the ExceptionSignal signal.
:param signal: event data
:type signal: (event_type, message_data)
:param data: additional data
:type data: any
"""
global exception_processed
if exception_processed:
# get data from the event data structure
exception_info = signal.exception_info
stack_trace = "\n" + App.get_scheduler().dump_stack()
log.error(stack_trace)
# exception_info is a list
sys.excepthook(*exception_info)
else:
# show only the first exception do not spam user with others
exception_processed = True
loop = App.get_event_loop()
# start new loop for handling the exception
# this will stop processing all the old signals and prevent raising new exceptions
loop.execute_new_loop(signal)
def test_create_instance_with_custom_everything(self):
event_loop = CustomEventLoop()
App.initialize(event_loop=event_loop,
scheduler=CustomScreenScheduler(event_loop),
global_configuration=CustomGlobalConfiguration())
self.assertTrue(isinstance(App.get_event_loop(), CustomEventLoop))
self.assertTrue(isinstance(App.get_scheduler(), CustomScreenScheduler))
self.assertTrue(isinstance(App.get_configuration(), CustomGlobalConfiguration))
def _update_progress(self):
"""Handle progress updates from install thread."""
from pyanaconda.progress import progressQ
import queue
q = progressQ.q
# Grab all messages may have appeared since last time this method ran.
while True:
# Attempt to get a message out of the queue for how we should update
# the progress bar. If there's no message, don't error out.
# Also flush the communication Queue at least once a second and
# process it's events so we can react to async evens (like a thread
# throwing an exception)
while True:
try:
(code, args) = q.get(timeout=1)
break
except queue.Empty:
pass
finally:
loop = App.get_event_loop()
loop.process_signals()
if code == progressQ.PROGRESS_CODE_INIT:
# Text mode doesn't have a finite progress bar
pass
elif code == progressQ.PROGRESS_CODE_STEP:
# Instead of updating a progress bar, we just print a pip
# but print it without a new line.
sys.stdout.write('.')
sys.stdout.flush()
# Use _stepped as an indication to if we need a newline before
# the next message
self._stepped = True
elif code == progressQ.PROGRESS_CODE_MESSAGE:
# This should already be translated
if self._stepped:
# Get a new line in case we've done a step before
self._stepped = False
print('')
print(args[0])
elif code == progressQ.PROGRESS_CODE_COMPLETE:
# There shouldn't be any more progress updates, so return
q.task_done()
if self._stepped:
print('')
return True
elif code == progressQ.PROGRESS_CODE_QUIT:
sys.exit(args[0])
q.task_done()
return True
def _update_progress(self):
"""Handle progress updates from install thread."""
from pyanaconda.progress import progressQ
import queue
q = progressQ.q
# Grab all messages may have appeared since last time this method ran.
while True:
# Attempt to get a message out of the queue for how we should update
# the progress bar. If there's no message, don't error out.
# Also flush the communication Queue at least once a second and
# process it's events so we can react to async evens (like a thread
# throwing an exception)
while True:
try:
(code, args) = q.get(timeout=1)
break
except queue.Empty:
pass
finally:
loop = App.get_event_loop()
loop.process_signals()
if code == progressQ.PROGRESS_CODE_INIT:
# Text mode doesn't have a finite progress bar
pass
elif code == progressQ.PROGRESS_CODE_STEP:
# Instead of updating a progress bar, we just print a pip
# but print it without a new line.
sys.stdout.write('.')
sys.stdout.flush()
# Use _stepped as an indication to if we need a newline before
# the next message
self._stepped = True
elif code == progressQ.PROGRESS_CODE_MESSAGE:
# This should already be translated
if self._stepped:
# Get a new line in case we've done a step before
self._stepped = False
print('')
print(args[0])
elif code == progressQ.PROGRESS_CODE_COMPLETE:
# There shouldn't be any more progress updates, so return
q.task_done()
if self._stepped:
print('')
return True
elif code == progressQ.PROGRESS_CODE_QUIT:
sys.exit(args[0])
q.task_done()
return True
def __init__(self, data, storage=None, payload=None, instclass=None, message=""):
super().__init__(data, storage, payload, instclass)
self.input_required = True
self.initialize_start()
self._container = None
# The TUI hasn't been initialized with the message handlers yet. Add an
# exception message handler so that the TUI exits if anything goes wrong
# at this stage.
loop = App.get_event_loop()
loop.register_signal_handler(ExceptionSignal, exception_msg_handler_and_exit)
self._message = message
self._usevnc = False
self.initialize_done()
def __init__(self, data, storage=None, payload=None, instclass=None, message=""):
super().__init__(data, storage, payload, instclass)
self.input_required = True
self.initialize_start()
self._container = None
# The TUI hasn't been initialized with the message handlers yet. Add an
# exception message handler so that the TUI exits if anything goes wrong
# at this stage.
loop = App.get_event_loop()
loop.register_signal_handler(ExceptionSignal, exception_msg_handler_and_exit)
self._message = message
self._usevnc = False
self.initialize_done()
def setup(self, data):
"""Construct all the objects required to implement this interface.
This method must be provided by all subclasses.
"""
# Use GLib event loop for the Simpleline TUI
loop = GLibEventLoop()
App.initialize(event_loop=loop)
loop.set_quit_callback(tui_quit_callback)
scheduler = App.get_scheduler()
scheduler.quit_screen = YesNoDialog(self.quitMessage)
# tell python-meh it should use our raw_input
meh_io_handler = meh.ui.text.IOHandler(
in_func=self._get_meh_input_func)
self._meh_interface.set_io_handler(meh_io_handler)
# register handlers for various messages
loop = App.get_event_loop()
loop.register_signal_handler(ExceptionSignal, exception_msg_handler)
loop.register_signal_handler(SendMessageSignal,
self._handle_show_message)
_hubs = self._list_hubs()
# First, grab a list of all the standalone spokes.
spokes = self._collectActionClasses(self.paths["spokes"],
StandaloneSpoke)
actionClasses = self._orderActionClasses(spokes, _hubs)
for klass in actionClasses:
obj = klass(data, self.storage, self.payload)
# If we are doing a kickstart install, some standalone spokes
# could already be filled out. In that case, we do not want
# to display them.
if self._is_standalone(obj) and obj.completed:
del (obj)
continue
if hasattr(obj, "set_path"):
obj.set_path("spokes", self.paths["spokes"])
obj.set_path("categories", self.paths["categories"])
should_schedule = obj.setup(self.ENVIRONMENT)
if should_schedule:
scheduler.schedule_screen(obj)
def _send_show_message(self, msg_fn, args, ret_queue):
""" Send message requesting to show some message dialog specified by the message function.
:param msg_fn: message dialog function requested to be called
: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
:param ret_queue: the queue which the return value of the message dialog
function should be put
:type ret_queue: a queue.Queue instance
"""
signal = SendMessageSignal(self, msg_fn=msg_fn, args=args, ret_queue=ret_queue)
loop = App.get_event_loop()
loop.enqueue_signal(signal)
def _send_show_message(self, msg_fn, args, ret_queue):
""" Send message requesting to show some message dialog specified by the message function.
:param msg_fn: message dialog function requested to be called
: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
:param ret_queue: the queue which the return value of the message dialog
function should be put
:type ret_queue: a queue.Queue instance
"""
signal = SendMessageSignal(self, msg_fn=msg_fn, args=args, ret_queue=ret_queue)
loop = App.get_event_loop()
loop.enqueue_signal(signal)
def changeVNCPasswdWindow(self):
""" Change the password to a sane parameter.
We ask user to input a password that (len(password) > 6
and len(password) <= 8) or password == ''.
"""
message = _("VNC password must be six to eight characters long.\n"
"Please enter a new one, or leave blank for no password.")
App.initialize()
loop = App.get_event_loop()
loop.set_quit_callback(tui_quit_callback)
spoke = VNCPassSpoke(self.anaconda.ksdata, None, None, message)
ScreenHandler.schedule_screen(spoke)
App.run()
self.password = self.anaconda.ksdata.vnc.password
def setup(self, data):
"""Construct all the objects required to implement this interface.
This method must be provided by all subclasses.
"""
# Use GLib event loop for the Simpleline TUI
loop = GLibEventLoop()
App.initialize(event_loop=loop)
loop.set_quit_callback(tui_quit_callback)
scheduler = App.get_scheduler()
scheduler.quit_screen = YesNoDialog(self.quitMessage)
# tell python-meh it should use our raw_input
meh_io_handler = meh.ui.text.IOHandler(in_func=self._get_meh_input_func)
self._meh_interface.set_io_handler(meh_io_handler)
# register handlers for various messages
loop = App.get_event_loop()
loop.register_signal_handler(ExceptionSignal, exception_msg_handler)
loop.register_signal_handler(SendMessageSignal, self._handle_show_message)
_hubs = self._list_hubs()
# First, grab a list of all the standalone spokes.
spokes = self._collectActionClasses(self.paths["spokes"], StandaloneSpoke)
actionClasses = self._orderActionClasses(spokes, _hubs)
for klass in actionClasses:
obj = klass(data, self.storage, self.payload, self.instclass)
# If we are doing a kickstart install, some standalone spokes
# could already be filled out. In that case, we do not want
# to display them.
if self._is_standalone(obj) and obj.completed:
del(obj)
continue
if hasattr(obj, "set_path"):
obj.set_path("spokes", self.paths["spokes"])
obj.set_path("categories", self.paths["categories"])
should_schedule = obj.setup(self.ENVIRONMENT)
if should_schedule:
scheduler.schedule_screen(obj)
def changeVNCPasswdWindow(self):
""" Change the password to a sane parameter.
We ask user to input a password that (len(password) > 6
and len(password) <= 8) or password == ''.
"""
message = _("VNC password must be six to eight characters long.\n"
"Please enter a new one, or leave blank for no password.")
App.initialize()
loop = App.get_event_loop()
loop.set_quit_callback(tui_quit_callback)
spoke = VNCPassSpoke(self.anaconda.ksdata, None, None, None, message)
ScreenHandler.schedule_screen(spoke)
App.run()
self.password = self.anaconda.ksdata.vnc.password
def test_reinitialize(self):
event_loop1 = CustomEventLoop()
event_loop2 = CustomEventLoop()
scheduler1 = CustomScreenScheduler(event_loop1)
scheduler2 = CustomScreenScheduler(event_loop2)
configuration1 = CustomGlobalConfiguration()
configuration2 = CustomGlobalConfiguration()
App.initialize(event_loop=event_loop1, scheduler=scheduler1,
global_configuration=configuration1)
self._check_app_settings(event_loop1, scheduler1, configuration1)
App.initialize(event_loop=event_loop2, scheduler=scheduler2,
global_configuration=configuration2)
self._check_app_settings(event_loop2, scheduler2, configuration2)
App.initialize()
self.assertNotEqual(App.get_event_loop(), event_loop2)
self.assertNotEqual(App.get_scheduler(), scheduler2)
self.assertNotEqual(App.get_configuration(), configuration2)
def ask_vnc_question(anaconda, vnc_server, message):
""" Ask the user if TUI or GUI-over-VNC should be started.
:param anaconda: instance of the Anaconda class
:param vnc_server: instance of the VNC server object
:param str message: a message to show to the user together
with the question
"""
App.initialize()
loop = App.get_event_loop()
loop.set_quit_callback(tui_quit_callback)
spoke = AskVNCSpoke(anaconda.ksdata, message)
ScreenHandler.schedule_screen(spoke)
App.run()
if anaconda.ksdata.vnc.enabled:
if not anaconda.gui_mode:
log.info("VNC requested via VNC question, switching Anaconda to GUI mode.")
anaconda.display_mode = constants.DisplayModes.GUI
flags.usevnc = True
vnc_server.password = anaconda.ksdata.vnc.password
def ask_vnc_question(anaconda, vnc_server, message):
""" Ask the user if TUI or GUI-over-VNC should be started.
:param anaconda: instance of the Anaconda class
:param vnc_server: instance of the VNC server object
:param str message: a message to show to the user together
with the question
"""
App.initialize()
loop = App.get_event_loop()
loop.set_quit_callback(tui_quit_callback)
spoke = AskVNCSpoke(anaconda.ksdata, message)
ScreenHandler.schedule_screen(spoke)
App.run()
if anaconda.ksdata.vnc.enabled:
if not anaconda.gui_mode:
log.info("VNC requested via VNC question, switching Anaconda to GUI mode.")
anaconda.display_mode = constants.DisplayModes.GUI
flags.usevnc = True
vnc_server.password = anaconda.ksdata.vnc.password
def setup(self, args="anaconda"):
environment = args
should_schedule = TUIHub.setup(self, environment)
if not should_schedule:
return False
if flags.automatedInstall:
sys.stdout.write(_("Starting automated install"))
sys.stdout.flush()
spokes = self._spokes.values()
while not all(spoke.ready for spoke in spokes):
# Catch any asynchronous events (like storage crashing)
loop = App.get_event_loop()
loop.process_signals()
sys.stdout.write('.')
sys.stdout.flush()
time.sleep(1)
print('')
return True
def setup(self, args="anaconda"):
environment = args
should_schedule = TUIHub.setup(self, environment)
if not should_schedule:
return False
if flags.automatedInstall:
sys.stdout.write(_("Starting automated install"))
sys.stdout.flush()
spokes = self._spokes.values()
while not all(spoke.ready for spoke in spokes):
# Catch any asynchronous events (like storage crashing)
loop = App.get_event_loop()
loop.process_signals()
sys.stdout.write('.')
sys.stdout.flush()
time.sleep(1)
print('')
for spoke in spokes:
if spoke.changed:
spoke.execute()
return True
def show_all(self):
super().show_all()
from pyanaconda.installation import RunInstallationTask
# Start the installation task.
self._task = RunInstallationTask(payload=self.payload,
ksdata=self.data)
self._task.progress_changed_signal.connect(self._on_progress_changed)
self._task.stopped_signal.connect(self._on_installation_done)
self._task.start()
log.debug("The installation has started.")
# This will run until the task is finished.
loop = App.get_event_loop()
loop.process_signals(return_after=ScreenReadySignal)
# kickstart install, continue automatically if reboot or shutdown selected
if flags.automatedInstall and self.data.reboot.action in [
KS_REBOOT, KS_SHUTDOWN
]:
# Just pretend like we got input, and our input doesn't care
# what it gets, it just quits.
raise ExitMainLoop()
def _on_installation_done(self):
log.debug("The installation has finished.")
# Print a new line after the last step.
if self._stepped:
print('')
# Finish the installation task. Re-raise tracebacks if any.
self._task.finish()
util.ipmi_report(IPMI_FINISHED)
if conf.license.eula:
# Notify user about the EULA (if any).
print(_("Installation complete"))
print('')
print(
_("Use of this product is subject to the license agreement found at:"
))
print(conf.license.eula)
print('')
loop = App.get_event_loop()
loop.enqueue_signal(ScreenReadySignal(self))
def force_quit_mock(self, signal, data=None):
self._force_quit_called = True
loop = App.get_event_loop()
loop.force_quit()
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")
run_in_loop(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,
NonInteractiveError) or not self._interactive:
if issubclass(ty, NonInteractiveError):
cmdline_error_msg = _(
"\nThe installation was stopped due to an "
"error which occurred 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(180)
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
# new Simpleline package is now used in TUI. Look if Simpleline is
# initialized or if this is some fallback from GTK or other stuff.
if App.is_initialized():
# if Simpleline is initialized enqueue exception there
loop = App.get_event_loop()
loop.enqueue_signal(
ExceptionSignal(App.get_scheduler(),
exception_info=exc_info))
else:
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")
run_in_loop(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, NonInteractiveError) or not self._interactive:
if issubclass(ty, NonInteractiveError):
cmdline_error_msg = _("\nThe installation was stopped due to an "
"error which occurred 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(180)
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
# new Simpleline package is now used in TUI. Look if Simpleline is
# initialized or if this is some fallback from GTK or other stuff.
if App.is_initialized():
# if Simpleline is initialized enqueue exception there
loop = App.get_event_loop()
loop.enqueue_signal(ExceptionSignal(App.get_scheduler(), exception_info=exc_info))
else:
hubQ.send_exception((exc_info.type,
exc_info.value,
exc_info.stack))
def _post_init_configuration(self):
App.get_event_loop().register_signal_handler(
InputReceivedSignal, self.__instance._input_received_handler)
