/usr/lib/python2.7/dist-packages/os_xenapi/dom0/etc/xapi.d/plugins/bandwidth.py is in python-os-xenapi 0.3.1-0ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 | #!/usr/bin/env python
# Copyright (c) 2012 OpenStack Foundation
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
# NOTE: XenServer still only supports Python 2.4 in it's dom0 userspace
# which means the Nova xenapi plugins must use only Python 2.4 features
"""Fetch Bandwidth data from VIF network devices."""
import utils
import dom0_pluginlib
import re
dom0_pluginlib.configure_logging('bandwidth')
def _read_proc_net():
f = open('/proc/net/dev', 'r')
try:
return f.readlines()
finally:
f.close()
def _get_bandwitdth_from_proc():
devs = [l.strip() for l in _read_proc_net()]
# ignore headers
devs = devs[2:]
vif_pattern = re.compile("^vif(\d+)\.(\d+)")
dlist = [d.split(':', 1) for d in devs if vif_pattern.match(d)]
devmap = dict()
for name, stats in dlist:
slist = stats.split()
dom, vifnum = name[3:].split('.', 1)
dev = devmap.get(dom, {})
# Note, we deliberately swap in and out, as instance traffic
# shows up inverted due to going though the bridge. (mdragon)
dev[vifnum] = dict(bw_in=int(slist[8]), bw_out=int(slist[0]))
devmap[dom] = dev
return devmap
def fetch_all_bandwidth(session):
return _get_bandwitdth_from_proc()
if __name__ == '__main__':
utils.register_plugin_calls(fetch_all_bandwidth)
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