ganeti.daemon.Mainloop

class documentation

class Mainloop(object):

Generic mainloop for daemons

Method	`__init__`	Constructs a new Mainloop instance.
Method	`RegisterSignal`	Registers a receiver for signal notifications
Method	`Run`	Runs the mainloop.
Instance Variable	`awaker`	Undocumented
Method	`_CallSignalWaiters`	Calls all signal waiters for a certain signal.
Constant	`_SHUTDOWN_TIMEOUT_PRIORITY`	Undocumented
Instance Variable	`_signal_wait`	Undocumented

def __init__(self): ¶

Constructs a new Mainloop instance.

def RegisterSignal(self, owner): ¶

Registers a receiver for signal notifications

The receiver must support a "OnSignal(self, signum)" function.

Parameters
owner:instance	Receiver

@utils.SignalHandled([signal.SIGCHLD])
@utils.SignalHandled([signal.SIGTERM])
@utils.SignalHandled([signal.SIGINT])
def Run(self, shutdown_wait_fn=None, signal_handlers=None): ¶

Runs the mainloop.

Parameters
shutdown_wait_fn:callable	Function to check whether loop can be terminated; important: function must be idempotent and must return either None for shutting down or a timeout for another call
signal_handlers:dict	signal->`utils.SignalHandler` passed by decorator

awaker = ¶

Undocumented

def _CallSignalWaiters(self, signum): ¶

Calls all signal waiters for a certain signal.

Parameters
signum:int	Signal number

_SHUTDOWN_TIMEOUT_PRIORITY = ¶

Undocumented

Value

-(sys.maxsize-1)

_signal_wait: list = ¶

Undocumented