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##############################################################################
# Copyright (c) 2017 ZTE Corporation 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
##############################################################################
import os
import random
import time
from doctor_tests.alarm import Alarm
from doctor_tests.common.constants import Host
from doctor_tests.common.utils import get_doctor_test_root_dir
from doctor_tests.common.utils import match_rep_in_file
from doctor_tests.common.utils import SSHClient
from doctor_tests.consumer import get_consumer
from doctor_tests.identity_auth import get_identity_auth
from doctor_tests.identity_auth import get_session
from doctor_tests.instance import Instance
from doctor_tests.inspector import get_inspector
from doctor_tests.monitor import get_monitor
from doctor_tests.network import Network
from doctor_tests.profiler_poc import main as profiler_main
from doctor_tests.os_clients import nova_client
LINK_DOWN_SCRIPT = """
#!/bin/bash -x
dev=$(sudo ip a | awk '/ {compute_ip}\//{{print $NF}}')
sleep 1
sudo ip link set $dev down
echo "doctor set link down at" $(date "+%s.%N")
sleep 30
sudo ip link set $dev up
sleep 1
"""
class FaultManagement(object):
def __init__(self, conf, installer, user, log, transport_url):
self.conf = conf
self.log = log
self.user = user
self.installer = installer
auth = get_identity_auth(project=self.conf.doctor_project)
self.nova = nova_client(self.conf.nova_version,
get_session(auth=auth))
self.test_dir = get_doctor_test_root_dir()
self.down_host = None
self.GetLog = False
self.disable_network_log = None
self.network = Network(self.conf, log)
self.instance = Instance(self.conf, log)
self.alarm = Alarm(self.conf, log)
self.inspector = get_inspector(self.conf, log, transport_url)
self.monitor = get_monitor(self.conf,
self.inspector.get_inspector_url(),
log)
self.consumer = get_consumer(self.conf, log)
def setup(self):
self.log.info('fault management setup......')
# user settings...
self.user.update_quota()
# creating VM...
self.network.create()
self.instance.create()
self.instance.wait_for_vm_launch()
# creating alarm...
self.alarm.create()
# starting doctor sample components...
# tbd tojuvone: move inspector and consumer to common setup
# when they support updating VMs via instance.create and
# instance.delete alarm
self.inspector.start()
self.consumer.start()
self.down_host = self.get_host_info_for_random_vm()
self.monitor.start(self.down_host)
def start(self):
self.log.info('fault management start......')
self._set_link_down(self.down_host.ip)
self.log.info('fault management end......')
def cleanup(self):
self.log.info('fault management cleanup......')
self.get_disable_network_log()
self.unset_forced_down_hosts()
self.inspector.stop()
self.monitor.stop()
self.consumer.stop()
self.alarm.delete()
self.instance.delete()
self.network.delete()
def get_host_info_for_random_vm(self):
num = random.randint(0, self.conf.instance_count - 1)
vm_name = "%s%d" % (self.conf.instance_basename, num)
servers = {getattr(server, 'name'): server
for server in self.nova.servers.list()}
server = servers.get(vm_name)
if not server:
raise Exception('Can not find instance: vm_name(%s)' % vm_name)
host_name = server.__dict__.get('OS-EXT-SRV-ATTR:hypervisor_hostname')
host_ip = self.installer.get_host_ip_from_hostname(host_name)
self.log.info('Get host info(name:%s, ip:%s) which vm(%s) launched at'
% (host_name, host_ip, vm_name))
return Host(host_name, host_ip)
def unset_forced_down_hosts(self):
if self.down_host:
self.nova.services.force_down(self.down_host.name,
'nova-compute', False)
time.sleep(2)
self.check_host_status('up')
def check_host_status(self, state):
service = self.nova.services.list(host=self.down_host.name,
binary='nova-compute')
host_state = service[0].__dict__.get('state')
assert host_state == state
def get_disable_network_log(self):
if self.GetLog:
self.log.info('Already get the disable_netork.log '
'from down_host......')
return self.disable_network_log
if self.down_host is not None:
client = SSHClient(
self.down_host.ip,
self.installer.node_user_name,
key_filename=self.installer.get_ssh_key_from_installer(),
look_for_keys=True,
log=self.log)
self.disable_network_log = \
'{0}/{1}'.format(self.test_dir,
'disable_network.log')
client.scp('disable_network.log',
self.disable_network_log,
method='get')
self.log.info('Get the disable_netork.log from'
'down_host(host_name:%s, host_ip:%s)'
% (self.down_host.name, self.down_host.ip))
self.GetLog = True
return self.disable_network_log
def _set_link_down(self, compute_ip):
file_name = '{0}/{1}'.format(self.test_dir, 'disable_network.sh')
with open(file_name, 'w') as file:
file.write(LINK_DOWN_SCRIPT.format(compute_ip=compute_ip))
client = SSHClient(
compute_ip,
self.installer.node_user_name,
key_filename=self.installer.get_ssh_key_from_installer(),
look_for_keys=True,
log=self.log)
client.scp(file_name, 'disable_network.sh')
command = 'bash disable_network.sh > disable_network.log 2>&1 &'
client.ssh(command)
def check_notification_time(self):
if self.consumer.notified_time is None \
or self.monitor.detected_time is None:
raise Exception('doctor fault management test failed, '
'detected_time=%s, notified_time=%s'
% (self.monitor.detected_time,
self.consumer.notified_time))
notification_time = \
self.consumer.notified_time - \
self.monitor.detected_time
self.log.info('doctor fault management notification_time=%s'
% notification_time)
if notification_time < 1 and notification_time > 0:
self.log.info('doctor fault management test successfully')
else:
if self.conf.profiler_type:
self.log.info('run doctor fault management profile.......')
self.run_profiler()
raise Exception('doctor fault management test failed, '
'notification_time=%s' % notification_time)
if self.conf.profiler_type:
self.log.info('run doctor fault management profile.......')
self.run_profiler()
def run_profiler(self):
net_down_log_file = self.get_disable_network_log()
reg = '(?<=doctor set link down at )\d+.\d+'
linkdown = float(match_rep_in_file(reg, net_down_log_file).group(0))
vmdown = self.inspector.vm_down_time
hostdown = self.inspector.host_down_time
detected = self.monitor.detected_time
notified = self.consumer.notified_time
if None in [vmdown, hostdown, detected, notified]:
self.log.info('one of the time for profiler is None, return')
return
# TODO(yujunz) check the actual delay to verify time sync status
# expected ~1s delay from $trigger to $linkdown
relative_start = linkdown
os.environ['DOCTOR_PROFILER_T00'] = (
str(int((linkdown - relative_start) * 1000)))
os.environ['DOCTOR_PROFILER_T01'] = (
str(int((detected - relative_start) * 1000)))
os.environ['DOCTOR_PROFILER_T03'] = (
str(int((vmdown - relative_start) * 1000)))
os.environ['DOCTOR_PROFILER_T04'] = (
str(int((hostdown - relative_start) * 1000)))
os.environ['DOCTOR_PROFILER_T09'] = (
str(int((notified - relative_start) * 1000)))
profiler_main(log=self.log)
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