twisted.python.systemd.ListenFDs(object) class documentationtwisted.python.systemd
View Source
(View In Hierarchy)
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. |
int)
| Parameters | descriptors | The descriptors which will be returned from calls to inheritedDescriptors. |
| 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. |
| 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. | |
| Returns | A new instance of cls which can be used to look up the descriptors which have been inherited. | |