You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
330 lines
13 KiB
330 lines
13 KiB
#
|
|
# errors.py: exception classes used throughout anaconda
|
|
#
|
|
# Copyright (C) 2012 Red Hat, Inc. All rights reserved.
|
|
#
|
|
# This program is free software; you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation; either version 2 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# 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 pyanaconda.i18n import _, C_
|
|
|
|
__all__ = ["ERROR_RAISE", "ERROR_CONTINUE", "ERROR_RETRY",
|
|
"InvalidImageSizeError", "MissingImageError", "MediaUnmountError",
|
|
"MediaMountError", "ScriptError", "CmdlineError",
|
|
"errorHandler"]
|
|
|
|
class InvalidImageSizeError(Exception):
|
|
def __init__(self, message, filename):
|
|
Exception.__init__(self, message)
|
|
self.filename = filename
|
|
|
|
class MissingImageError(Exception):
|
|
pass
|
|
|
|
class MediaMountError(Exception):
|
|
def __init__(self, device):
|
|
Exception.__init__(self)
|
|
self.device = device
|
|
|
|
class MediaUnmountError(Exception):
|
|
def __init__(self, device):
|
|
Exception.__init__(self)
|
|
self.device = device
|
|
|
|
class ScriptError(Exception):
|
|
def __init__(self, lineno, details):
|
|
Exception.__init__(self)
|
|
self.lineno = lineno
|
|
self.details = details
|
|
|
|
class CmdlineError(Exception):
|
|
pass
|
|
|
|
class RemovedModuleError(ImportError):
|
|
pass
|
|
|
|
class PasswordCryptError(Exception):
|
|
def __init__(self, algo):
|
|
Exception.__init__(self)
|
|
self.algo = algo
|
|
|
|
class ZIPLError(Exception):
|
|
pass
|
|
|
|
# These constants are returned by the callback in the ErrorHandler class.
|
|
# Each represents a different kind of action the caller can take:
|
|
#
|
|
# ERROR_RAISE - This is a fatal error, and anaconda can do nothing but quit
|
|
# or raise an exception. This then feeds into the exception
|
|
# handling framework.
|
|
#
|
|
# ERROR_CONTINUE - anaconda should continue with whatever it was going to do.
|
|
# This result comes from non-fatal errors, asking yes/no
|
|
# questions, and the like.
|
|
#
|
|
# ERROR_RETRY - This is a serious problem, but anaconda should attempt to
|
|
# try again. Continued failures may eventually result in an
|
|
# ERROR_RAISE.
|
|
ERROR_RAISE = 0
|
|
ERROR_CONTINUE = 1
|
|
ERROR_RETRY = 2
|
|
|
|
###
|
|
### TOP-LEVEL ERROR HANDLING OBJECT
|
|
###
|
|
|
|
class ErrorHandler(object):
|
|
"""This object makes up one part of anaconda's error handling system. This
|
|
part is the UI-agnostic error callback. Throughout anaconda, various
|
|
error conditions can occur in places that need to pop up a dialog, but
|
|
should not know anything about the type or details of the UI. In order
|
|
to accomplish this, each pyanaconda.ui.UserInterface subclass presents a
|
|
common set of dialog methods.
|
|
|
|
The entry point to these methods is through the cb method of this class,
|
|
which acts as a dispatcher to the appropriate handler, which in turn
|
|
pops up the correct kind of dialog. The result of all this is one of the
|
|
ERROR_* constants defined elsewhere in this module. The original calling
|
|
code must then interpret this result and take the appropriate action.
|
|
|
|
For details on the other parts of the error handling system, see the
|
|
documentation for pyanaconda.ui.UserInterface and pyanaconda.exception.
|
|
"""
|
|
def __init__(self, ui=None):
|
|
self.ui = ui
|
|
|
|
def _partitionErrorHandler(self, exn):
|
|
message = _("The following errors occurred with your partitioning:\n\n%(errortxt)s\n\n"
|
|
"The installation will now terminate.") % {"errortxt": exn}
|
|
self.ui.showError(message)
|
|
return ERROR_RAISE
|
|
|
|
def _fsResizeHandler(self, exn):
|
|
message = _("An error occurred while resizing the device %s.") % exn
|
|
|
|
if exn.details:
|
|
message += "\n\n%s" % exn.details
|
|
|
|
self.ui.showError(message)
|
|
return ERROR_RAISE
|
|
|
|
def _storageResetHandler(self, exn):
|
|
message = (_("There is a problem with your existing storage "
|
|
"configuration: %(errortxt)s\n\n"
|
|
"You must resolve this matter before the installation can "
|
|
"proceed. There is a shell available for use which you "
|
|
"can access by pressing ctrl-alt-f1 and then ctrl-b 2."
|
|
"\n\nOnce you have resolved the issue you can retry the "
|
|
"storage scan. If you do not fix it you will have to exit "
|
|
"the installer.") % {"errortxt": exn})
|
|
details = _(exn.suggestion)
|
|
buttons = (C_("GUI|Storage Detailed Error Dialog", "_Exit Installer"),
|
|
C_("GUI|Storage Detailed Error Dialog", "_Retry"))
|
|
if self.ui.showDetailedError(message, details, buttons=buttons):
|
|
return ERROR_RETRY
|
|
else:
|
|
return ERROR_RAISE
|
|
|
|
def _noDisksHandler(self, exn):
|
|
message = _("An error has occurred - no valid devices were found on "
|
|
"which to create new file systems. Please check your "
|
|
"hardware for the cause of this problem.")
|
|
self.ui.showError(message)
|
|
return ERROR_RAISE
|
|
|
|
def _fstabTypeMismatchHandler(self, exn):
|
|
# FIXME: include the two types in the message instead of including
|
|
# the raw exception text
|
|
message = _("There is an entry in your /etc/fstab file that contains "
|
|
"an invalid or incorrect file system type:\n\n")
|
|
message += " " + str(exn)
|
|
self.ui.showError(message)
|
|
|
|
def _invalidImageSizeHandler(self, exn):
|
|
message = _("The ISO image %s has a size which is not "
|
|
"a multiple of 2048 bytes. This may mean "
|
|
"it was corrupted on transfer to this computer."
|
|
"\n\n"
|
|
"It is recommended that you exit and abort your "
|
|
"installation, but you can choose to continue if "
|
|
"you think this is in error. Would you like to "
|
|
"continue using this image?") % exn.filename
|
|
if self.ui.showYesNoQuestion(message):
|
|
return ERROR_CONTINUE
|
|
else:
|
|
return ERROR_RAISE
|
|
|
|
def _missingImageHandler(self, exn):
|
|
message = _("The installer has tried to mount the "
|
|
"installation image, but cannot find it on "
|
|
"the hard drive.\n\n"
|
|
"Should I try again to locate the image?")
|
|
if self.ui.showYesNoQuestion(message):
|
|
return ERROR_RETRY
|
|
else:
|
|
return ERROR_RAISE
|
|
|
|
def _mediaMountHandler(self, exn):
|
|
message = _("An error occurred mounting the source "
|
|
"device %s. Retry?") % exn.device.name
|
|
if self.ui.showYesNoQuestion(message):
|
|
return ERROR_RETRY
|
|
else:
|
|
return ERROR_RAISE
|
|
|
|
def _mediaUnmountHandler(self, exn):
|
|
message = _("An error occurred unmounting the disc. "
|
|
"Please make sure you're not accessing "
|
|
"%s from the shell on tty2 "
|
|
"and then click OK to retry.") % exn.device.path
|
|
self.ui.showError(message)
|
|
|
|
def _noSuchGroupHandler(self, exn):
|
|
if exn.required:
|
|
message = _("The group '%s' is required for this installation. "
|
|
"This group does not exist. This is a fatal error and "
|
|
"installation will be aborted.") % exn.group
|
|
self.ui.showError(message)
|
|
return ERROR_RAISE
|
|
elif exn.adding:
|
|
message = _("You have specified that the group '%s' should be "
|
|
"installed. This group does not exist. Would you like "
|
|
"to ignore this group and continue with "
|
|
"installation?") % exn.group
|
|
else:
|
|
message = _("You have specified that the group '%s' should be "
|
|
"excluded from installation. This group does not exist. "
|
|
"Would you like to ignore this group and continue with "
|
|
"installation?") % exn.group
|
|
|
|
if self.ui.showYesNoQuestion(message):
|
|
return ERROR_CONTINUE
|
|
else:
|
|
return ERROR_RAISE
|
|
|
|
def _noSuchPackageHandler(self, exn):
|
|
if exn.required:
|
|
message = _("The package '%s' is required for this installation. "
|
|
"This package does not exist. This is a fatal error and "
|
|
"installation will be aborted.") % exn.package
|
|
self.ui.showError(message)
|
|
return ERROR_RAISE
|
|
|
|
else:
|
|
message = _("You have specified that the package '%s' should be "
|
|
"installed. This package does not exist. Would you "
|
|
"like to ignore this package and continue with "
|
|
"installation?") % exn.package
|
|
|
|
if self.ui.showYesNoQuestion(message):
|
|
return ERROR_CONTINUE
|
|
else:
|
|
return ERROR_RAISE
|
|
|
|
def _scriptErrorHandler(self, exn):
|
|
message = _("There was an error running the kickstart script at line "
|
|
"%(lineno)s. This is a fatal error and installation will be "
|
|
"aborted. The details of this error are:\n\n%(details)s") % \
|
|
{"lineno": exn.lineno, "details" : exn.details}
|
|
self.ui.showError(message)
|
|
return ERROR_RAISE
|
|
|
|
def _payloadInstallHandler(self, exn):
|
|
message = _("The following error occurred while installing. This is "
|
|
"a fatal error and installation will be aborted.")
|
|
message += "\n\n" + str(exn)
|
|
|
|
self.ui.showError(message)
|
|
return ERROR_RAISE
|
|
|
|
def _dependencyErrorHandler(self, exn):
|
|
message = _("The following software marked for installation has errors. "
|
|
"This is likely caused by an error with\nyour installation source.")
|
|
details = str(exn)
|
|
|
|
self.ui.showDetailedError(message, details)
|
|
return ERROR_RAISE
|
|
|
|
def _bootLoaderErrorHandler(self, exn):
|
|
message = _("The following error occurred while installing the boot loader. "
|
|
"The system will not be bootable. "
|
|
"Would you like to ignore this and continue with "
|
|
"installation?")
|
|
message += "\n\n" + str(exn)
|
|
|
|
if self.ui.showYesNoQuestion(message):
|
|
return ERROR_CONTINUE
|
|
else:
|
|
return ERROR_RAISE
|
|
|
|
def _passwordCryptErrorHandler(self, exn):
|
|
message = _("Unable to encrypt password: unsupported algorithm %s") % exn.algo
|
|
|
|
self.ui.showError(message)
|
|
return ERROR_RAISE
|
|
|
|
def _ziplErrorHandler(self, exn):
|
|
details = str(exn)
|
|
message = _("Installation was stopped due to an error installing the "
|
|
"boot loader. The exact error message is:\n\n%s\n\n"
|
|
"The installer will now terminate.") % details
|
|
|
|
self.ui.showError(message)
|
|
return ERROR_RAISE
|
|
|
|
def cb(self, exn):
|
|
"""This method is the callback that all error handling should pass
|
|
through. The return value is one of the ERROR_* constants defined
|
|
in this module, though the exact constant returned depends on the
|
|
kind of exception being handled.
|
|
|
|
Arguments:
|
|
|
|
exn -- An instance of some Exception.
|
|
"""
|
|
rc = ERROR_RAISE
|
|
|
|
if not self.ui:
|
|
raise exn
|
|
|
|
_map = {"PartitioningError": self._partitionErrorHandler,
|
|
"FSResizeError": self._fsResizeHandler,
|
|
"UnusableConfigurationError": self._storageResetHandler,
|
|
"DiskLabelScanError": self._storageResetHandler,
|
|
"CorruptGPTError": self._storageResetHandler,
|
|
"DuplicateVGError": self._storageResetHandler,
|
|
"NoDisksError": self._noDisksHandler,
|
|
"FSTabTypeMismatchError": self._fstabTypeMismatchHandler,
|
|
"InvalidImageSizeError": self._invalidImageSizeHandler,
|
|
"MissingImageError": self._missingImageHandler,
|
|
"MediaMountError": self._mediaMountHandler,
|
|
"MediaUnmountError": self._mediaUnmountHandler,
|
|
"NoSuchGroup": self._noSuchGroupHandler,
|
|
"NoSuchPackage": self._noSuchPackageHandler,
|
|
"ScriptError": self._scriptErrorHandler,
|
|
"PayloadInstallError": self._payloadInstallHandler,
|
|
"DependencyError": self._dependencyErrorHandler,
|
|
"BootLoaderError": self._bootLoaderErrorHandler,
|
|
"PasswordCryptError": self._passwordCryptErrorHandler,
|
|
"ZIPLError": self._ziplErrorHandler}
|
|
|
|
if exn.__class__.__name__ in _map:
|
|
rc = _map[exn.__class__.__name__](exn)
|
|
|
|
return rc
|
|
|
|
# Create a singleton of the ErrorHandler class. It is up to the UserInterface
|
|
# subclass to set errorHandler.ui before this class is ever used, or there will
|
|
# be trouble.
|
|
errorHandler = ErrorHandler()
|