Class WatcherState

Interface to a state file recording restart attempts.

Instance Methods

[hide private]

__init__(self, statefile)
Open, lock, read and parse the file.

Save(self)
Save state to file, then unlock and close it.

Close(self)
Unlock configuration file and close it.

GetNodeBootID(self, name)
Returns the last boot ID of a node or None.

SetNodeBootID(self, name, bootid)
Sets the boot ID of a node.

NumberOfRestartAttempts(self, instance)
Returns number of previous restart attempts.

MaintainInstanceList(self, instances)
Perform maintenance on the recorded instances.

RecordRestartAttempt(self, instance)
Record a restart attempt.

RemoveInstance(self, instance)
Update state to reflect that a machine is running.

Inherited from object: __delattr__, __format__, __getattribute__, __hash__, __new__, __reduce__, __reduce_ex__, __repr__, __setattr__, __sizeof__, __str__, __subclasshook__

Properties

[hide private]

Inherited from object: __class__

Method Details

[hide private]

init(self, statefile)
(Constructor)

Open, lock, read and parse the file.

Parameters:

statefile (file) - State file object

Overrides: object.__init__

NumberOfRestartAttempts(self, instance)

Returns number of previous restart attempts.

Parameters:

instance (Instance) - the instance to look up

MaintainInstanceList(self, instances)

Perform maintenance on the recorded instances.

Parameters:

instances (list of string) - the list of currently existing instances

RecordRestartAttempt(self, instance)

Record a restart attempt.

Parameters:

instance (Instance) - the instance being restarted

RemoveInstance(self, instance)

Update state to reflect that a machine is running.

This method removes the record for a named instance (as we only track down instances).

Parameters:

instance (Instance) - the instance to remove from books

Class WatcherState

__init__(self, statefile) (Constructor)

NumberOfRestartAttempts(self, instance)

MaintainInstanceList(self, instances)

RecordRestartAttempt(self, instance)

RemoveInstance(self, instance)

init(self, statefile)
(Constructor)