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#!/usr/bin/env python3
###############################################################################
# Copyright (c) 2017 Koren Lev (Cisco Systems), Yaron Yogev (Cisco Systems) #
# and others #
# #
# All rights reserved. This program and the accompanying materials #
# are made available under the terms of the Apache License, Version 2.0 #
# which accompanies this distribution, and is available at #
# http://www.apache.org/licenses/LICENSE-2.0 #
###############################################################################
"""
for vservice with type T and id X
run on the corresponding host:
ip netns pid X
response is pid(s), for example:
32075
For DHCP there are multiple pid, we will take the dnsmasq process
then run :
ps -uf -p 32075
get STAT - "S" and "R" = OK
"""
import subprocess
import sys
from binary_converter import binary2str
rc = 0
args = sys.argv
if len(args) < 3:
print('usage: check_vservice.py <vService type> <vService ID>')
exit(2)
vservice_type = args[1]
vservice_id = args[2]
netns_cmd = 'sudo ip netns pid {}'.format(vservice_id)
pid = ''
ps_cmd = ''
try:
out = subprocess.check_output([netns_cmd], stderr=subprocess.STDOUT,
shell=True)
out = binary2str(out)
lines = out.splitlines()
if not lines:
print('no matching vservice: {}\ncommand: {}\noutput: {}'
.format(vservice_id, netns_cmd, out))
exit(2)
pid = lines[0]
except subprocess.CalledProcessError as e:
print("Error running '{}': {}"
.format(netns_cmd, binary2str(e.output)))
exit(2)
try:
ps_cmd = 'ps -uf -p {}'.format(pid)
out = subprocess.check_output([ps_cmd], stderr=subprocess.STDOUT,
shell=True)
ps_out = binary2str(out)
lines = ps_out.splitlines()
if not lines:
print('no matching vservice: {}\noutput of {}:\n{}'
.format(vservice_id, netns_cmd, out))
exit(2)
headers = lines[0].split()
lines = lines[1:]
if vservice_type == 'dhcp' and len(lines) > 1:
lines = [line for line in lines if 'dnsmasq' in line]
values = lines[0].split()
stat_index = headers.index('STAT')
status = values[stat_index]
rc = 0 if status in ['S', 'R'] else 2
print('{}\n{}\n{}'.format(netns_cmd, ps_cmd, ps_out))
except subprocess.CalledProcessError as e:
print("Error running '{}': {}".format(ps_cmd, binary2str(e.output)))
rc = 2
exit(rc)
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