Package haizea :: Package core :: Module manager :: Class PersistenceManager

Class PersistenceManager

Persistence manager.

The persistence manager is in charge of persisting leases, and some scheduling data, to disk. This allows Haizea to recover from crashes.

Instance Methods

[hide private]

__init__(self, file)
Constructor

source code

persist_lease(self, lease)
Persists a single lease to disk

source code

persist_queue(self, queue)
Persists the queue to disk

source code

persist_future_leases(self, leases)
Persists the set of future leases

source code

get_leases(self)
Returns the leases persisted to disk.

source code

get_queue(self)
Returns the queue persisted to disk.

source code

get_future_leases(self)
Returns the future leases persisted to disk.

source code

close(self)
Closes the persistence manager.

source code

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, file)
(Constructor)

source code

Constructor

Initializes the persistence manager. If the specified file
does not exist, it is created. If the file is created, it
is opened but the information is not recovered (this is
the responsibility of the Manager class)

Arguments:
file -- Persistence file. If None is specified, then
        persistence is disabled and Haizea will run entirely
        in-memory.