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# ############################################################################
# Copyright (c) 2017 Huawei Technologies Co.,Ltd 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
# ############################################################################
from __future__ import print_function
from __future__ import absolute_import
import logging
import subprocess
import threading
import time
from datetime import datetime
import ping
from yardstick.common import openstack_utils
from yardstick.common.utils import change_obj_to_dict
from yardstick.benchmark.scenarios import base
LOG = logging.getLogger(__name__)
TIMEOUT = 0.05
PACKAGE_SIZE = 64
class Migrate(base.Scenario): # pragma: no cover
"""
Execute a live migration for two hosts
"""
__scenario_type__ = "Migrate"
def __init__(self, scenario_cfg, context_cfg):
self.scenario_cfg = scenario_cfg
self.context_cfg = context_cfg
self.options = self.scenario_cfg.get('options', {})
self.nova_client = openstack_utils.get_nova_client()
def run(self, result):
default_instance_id = self.options.get('server', {}).get('id', '')
instance_id = self.options.get('server_id', default_instance_id)
LOG.info('Instance id is %s', instance_id)
target_host = self.options.get('host')
LOG.info('Target host is %s', target_host)
instance_ip = self.options.get('server_ip')
if instance_ip:
LOG.info('Instance ip is %s', instance_ip)
self._ping_until_connected(instance_ip)
LOG.info('Instance is connected')
LOG.debug('Start to ping instance')
ping_thread = self._do_ping_task(instance_ip)
keys = self.scenario_cfg.get('output', '').split()
try:
LOG.info('Start to migrate')
self._do_migrate(instance_id, target_host)
except Exception as e:
return self._push_to_outputs(keys, [1, str(e).split('.')[0]])
else:
migrate_time = self._get_migrate_time(instance_id)
LOG.info('Migration time is %s s', migrate_time)
current_host = self._get_current_host_name(instance_id)
LOG.info('Current host is %s', current_host)
if current_host.strip() != target_host.strip():
LOG.error('current_host not equal to target_host')
values = [1, 'current_host not equal to target_host']
return self._push_to_outputs(keys, values)
if instance_ip:
ping_thread.flag = False
ping_thread.join()
downtime = ping_thread.get_delay()
LOG.info('Downtime is %s s', downtime)
values = [0, migrate_time, downtime]
return self._push_to_outputs(keys, values)
else:
values = [0, migrate_time]
return self._push_to_outputs(keys, values)
def _do_migrate(self, server_id, target_host):
cmd = ['nova', 'live-migration', server_id, target_host]
p = subprocess.Popen(cmd, stdout=subprocess.PIPE)
p.communicate()
def _ping_until_connected(self, instance_ip):
for i in range(3000):
res = ping.do_one(instance_ip, TIMEOUT, PACKAGE_SIZE)
if res:
break
def _do_ping_task(self, instance_ip):
ping_thread = PingThread(instance_ip)
ping_thread.start()
return ping_thread
def _get_current_host_name(self, server_id):
return change_obj_to_dict(self.nova_client.servers.get(server_id))['OS-EXT-SRV-ATTR:host']
def _get_migrate_time(self, server_id):
while True:
status = self.nova_client.servers.get(server_id).status.lower()
if status == 'migrating':
start_time = datetime.now()
break
LOG.debug('Instance status change to MIGRATING')
while True:
status = self.nova_client.servers.get(server_id).status.lower()
if status == 'active':
end_time = datetime.now()
break
if status == 'error':
LOG.error('Instance status is ERROR')
raise RuntimeError('The instance status is error')
LOG.debug('Instance status change to ACTIVE')
duration = end_time - start_time
return duration.seconds + duration.microseconds * 1.0 / 1e6
class PingThread(threading.Thread): # pragma: no cover
def __init__(self, target):
super(PingThread, self).__init__()
self.target = target
self.flag = True
self.delay = 0.0
def run(self):
count = 0
while self.flag:
res = ping.do_one(self.target, TIMEOUT, PACKAGE_SIZE)
if not res:
count += 1
time.sleep(0.01)
self.delay = (TIMEOUT + 0.01) * count
def get_delay(self):
return self.delay
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