twisted.python.systemd.ListenFDs : API documentation

ListenFDs provides access to file descriptors inherited from systemd.

Typically ListenFDs.fromEnvironment should be used to construct a new instance of ListenFDs.

Method	__init__
Class Method	fromEnvironment	No summary
Method	inheritedDescriptors
Class Variable	_START	File descriptors inherited from systemd are always consecutively numbered, with a fixed lowest "starting" descriptor. This gives the default starting descriptor. Since this must agree with the value systemd is using, it typically should not be overridden.
Instance Variable	_descriptors	A `list` of `int` giving the descriptors which were inherited.

_START = (source)

File descriptors inherited from systemd are always consecutively numbered, with a fixed lowest "starting" descriptor. This gives the default starting descriptor. Since this must agree with the value systemd is using, it typically should not be overridden.

(type: int)

_descriptors = (source)

A list of int giving the descriptors which were inherited.

def __init__(self, descriptors): (source)

Parameters descriptors The descriptors which will be returned from calls to inheritedDescriptors. (type: List[int])

@classmethod
def fromEnvironment(cls, environ=None, start=None): (source)

Parameters	environ	A dictionary-like object to inspect to discover inherited descriptors. By default, `None`, indicating that the real process environment should be inspected. The default is suitable for typical usage. (type: `Optional[Mapping[str, str]]`)
	start	An integer giving the lowest value of an inherited descriptor systemd will give us. By default, `None`, indicating the known correct (that is, in agreement with systemd) value will be used. The default is suitable for typical usage. (type: `Optional[int]`)
Returns	A new instance of `cls` which can be used to look up the descriptors which have been inherited. (type: `ListenFDs`)

def inheritedDescriptors(self): (source)

Returns The configured descriptors. (type: Iterable[int])