pass
-class InvalidOS(GenericError):
- """Missing OS on node.
+class SignatureError(GenericError):
+ """Error authenticating a remote message.
- This is raised when an OS exists on the master (or is otherwise
- requested to the code) but not on the target node.
-
- This exception has three arguments:
- - the name of the os
- - the source directory, if any
- - the reason why we consider this an invalid OS (text of error message)
+ This is raised when the hmac signature on a message doesn't verify correctly
+ to the message itself. It can happen because of network unreliability or
+ because of spurious traffic.
"""
+ pass
class ParameterError(GenericError):
class QuitGanetiException(Exception):
"""Signal that Ganeti that it must quit.
- This is not necessarily an error (and thus not a subclass of GenericError),
- but it's an exceptional circumstance and it is thus treated. This instance
- should be instantiated with two values. The first one will specify whether an
- error should returned to the caller, and the second one will be the returned
- result (either as an error or as a normal result).
+ This is not necessarily an error (and thus not a subclass of
+ GenericError), but it's an exceptional circumstance and it is thus
+ treated. This instance should be instantiated with two values. The
+ first one will specify the return code to the caller, and the second
+ one will be the returned result (either as an error or as a normal
+ result). Usually only the leave cluster rpc call should return
+ status True (as there it's expected we quit), every other call will
+ return status False (as a critical error was encountered).
Examples::
# Return a result of "True" to the caller, but quit ganeti afterwards
- raise QuitGanetiException(False, True)
+ raise QuitGanetiException(True, None)
# Send an error to the caller, and quit ganeti
- raise QuitGanetiException(True, "Fatal safety violation, shutting down")
+ raise QuitGanetiException(False, "Fatal safety violation, shutting down")
"""