patroni.watchdog.linux module

patroni.watchdog.linux.IOC(dir_: int, type_: str, nr: int, size: int) → intView on GitHub 

patroni.watchdog.linux.IOR(type_: str, nr: int, size: int) → intView on GitHub 

patroni.watchdog.linux.IOW(type_: str, nr: int, size: int) → intView on GitHub 

patroni.watchdog.linux.IOWR(type_: str, nr: int, size: int) → intView on GitHub 

class patroni.watchdog.linux.LinuxWatchdogDevice(device: str)View on GitHub 

Bases: WatchdogBase

DEFAULT_DEVICE = '/dev/watchdog'

__init__(device: str) → NoneView on GitHub 

_abc_impl = <_abc._abc_data object>

_ioctl(func: int, arg: Any) → NoneView on GitHub 

Runs the specified ioctl on the underlying fd.

Raises WatchdogError if the device is closed. Raises OSError or IOError (Python 2) when the ioctl fails.

property can_be_disabled: bool: Returns True when watchdog will be disabled by calling close(). Some watchdog devices will keep running no matter what once activated. May raise WatchdogError if called without calling open() first.

close() → NoneView on GitHub : Gracefully close watchdog device.

describe() → strView on GitHub : Human readable name for this device

classmethod from_config(config: Dict[str, Any]) → LinuxWatchdogDeviceView on GitHub 

get_support() → WatchdogInfoView on GitHub 

get_timeout() → intView on GitHub : Returns the current keepalive timeout in effect.

has_set_timeout() → boolView on GitHub : Returns True if setting a timeout is supported.

property is_healthy: bool: Returns False when calling open() is known to fail.

property is_running: bool: Returns True when watchdog is activated and capable of performing it’s task.

keepalive() → NoneView on GitHub 

Resets the watchdog timer.

Watchdog must be open when keepalive is called.

open() → NoneView on GitHub 

Open watchdog device.

When watchdog is opened keepalive must be called. Returns nothing on success or raises WatchdogError if the device could not be opened.

set_timeout(timeout: int) → NoneView on GitHub 

Set the watchdog timer timeout.

Parameters:: timeout – watchdog timeout in seconds

class patroni.watchdog.linux.TestingWatchdogDevice(device: str)View on GitHub 

Bases: LinuxWatchdogDevice

Converts timeout ioctls to regular writes that can be intercepted from a named pipe.

_abc_impl = <_abc._abc_data object>

get_support() → WatchdogInfoView on GitHub 

get_timeout() → intView on GitHub : Returns the current keepalive timeout in effect.

set_timeout(timeout: int) → NoneView on GitHub 

Set the watchdog timer timeout.

Parameters:: timeout – watchdog timeout in seconds

timeout = 60

class patroni.watchdog.linux.WatchdogInfo(options: int, version: int, identity: str)View on GitHub 

Bases: NamedTuple

Watchdog descriptor from the kernel

_asdict()View on GitHub : Return a new dict which maps field names to their values.

_field_defaults = {}

_fields = ('options', 'version', 'identity')

classmethod _make(iterable)View on GitHub : Make a new WatchdogInfo object from a sequence or iterable

_replace(**kwds)View on GitHub : Return a new WatchdogInfo object replacing specified fields with new values

identity: str: Alias for field number 2

options: int: Alias for field number 0

version: int: Alias for field number 1

class patroni.watchdog.linux.watchdog_infoView on GitHub 

Bases: Structure

_fields_ = [('options', <class 'ctypes.c_uint'>), ('firmware_version', <class 'ctypes.c_uint'>), ('identity', <class 'patroni.watchdog.linux.c_ubyte_Array_32'>)]

firmware_version: Structure/Union member

identity: Structure/Union member

options: Structure/Union member