1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
|
# -*- coding: utf-8 -*-
"""
monitor
~~~~~~~
A simple monitor, which fires a callback each time a new domains
is introduced or released from XenStore.
:copyright: (c) 2011 by Selectel, see AUTHORS for more details.
"""
import pyxs
with pyxs.monitor() as m:
m.watch(b"@introduceDomain", b"unused")
m.watch(b"@releaseDomain", b"unused")
for wpath, _token in m.wait():
# Funny thing is -- XenStored doesn't send us domid of the
# event target, so we have to get it manually, via ``xc``.
if wpath == b"@introduceDomain":
print("Hey, we got a new domain here!")
else:
print("Ooops, we lost him ...")
|
