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##############################################################################
# Copyright (c) 2015 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
##############################################################################
import pkg_resources
import logging
import time
import yaml
import yardstick.ssh as ssh
from yardstick.benchmark.scenarios import base
from yardstick.benchmark.scenarios.availability import monitor
LOG = logging.getLogger(__name__)
class ServiceHA(base.Scenario):
"""TODO: docstring of ServiceHA
"""
__scenario_type__ = "ServiceHA"
HA_CONF = "ha_tools/ha_conf.yaml"
def __init__(self, scenario_cfg, context_cfg):
self.scenario_cfg = scenario_cfg
self.context_cfg = context_cfg
self.service_name = scenario_cfg["options"]["component"]
self.fault_type = scenario_cfg["options"]["fault_type"]
self.fault_time = scenario_cfg["options"].get("fault_time", 0)
self.fault_cfg = None
self.setup_done = False
self.need_teardown = False
def setup(self):
'''scenario setup'''
self.ha_conf_file = pkg_resources.resource_filename(
"yardstick.benchmark.scenarios.availability",
ServiceHA.HA_CONF)
ha_cfg = []
with open(self.ha_conf_file) as stream:
ha_cfg = yaml.load(stream)
LOG.debug("ha_cfg content:%s" % ha_cfg)
# check the ha_conf contains the service defined in test cases yaml
service_cfg = ha_cfg.get(self.service_name, None)
if not service_cfg:
LOG.error(
"The component %s can not be supported!" % self.service_name)
return
for fault in service_cfg:
if fault["type"] == self.fault_type:
self.fault_cfg = fault
break
if not self.fault_cfg:
LOG.error(
"The fualt_type %s can not be supproted!" % self.fault_type)
return
LOG.debug("the fault_cfg :%s" % self.fault_cfg)
self.fault_script = pkg_resources.resource_filename(
"yardstick.benchmark.scenarios.availability",
self.fault_cfg["inject_script"])
self.recovery_script = pkg_resources.resource_filename(
"yardstick.benchmark.scenarios.availability",
self.fault_cfg["recovery_script"])
self.check_script = pkg_resources.resource_filename(
"yardstick.benchmark.scenarios.availability",
self.fault_cfg["check_script"])
host = self.context_cfg.get("host", None)
ip = host.get("ip", None)
user = host.get("user", "root")
key_filename = host.get("key_filename", "~/.ssh/id_rsa")
LOG.info("The host: %s the service: %s" % (ip, self.service_name))
LOG.debug("The params, host:%s fault_cfg:%s" % (host, self.fault_cfg))
LOG.debug(
"ssh connection ip:%s, user:%s, key_file:%s",
ip, user, key_filename)
self.connection = ssh.SSH(user, ip, key_filename=key_filename)
self.connection.wait(timeout=600)
LOG.debug("ssh host success!")
# check the host envrioment
exit_status, stdout, stderr = self.connection.execute(
"/bin/sh -s {0}".format(self.service_name),
stdin=open(self.check_script, "r"))
LOG.info(
"the exit_status:%s stdout:%s stderr:%s" %
(exit_status, stdout, stderr))
if exit_status:
raise RuntimeError(stderr)
if stdout and "running" in stdout:
LOG.info("check the envrioment success!")
else:
LOG.error(
"the host envrioment is error, stdout:%s, stderr:%s" %
(stdout, stderr))
return
self.setup_done = True
def run(self, result):
"""execute the benchmark"""
if not self.setup_done:
LOG.error("The setup not finished!")
return
monitorInstance = monitor.Monitor()
monitorInstance.setup(self.fault_cfg)
monitorInstance.start()
LOG.info("monitor start!")
LOG.info("Inject fault!")
exit_status, stdout, stderr = self.connection.execute(
"/bin/sh -s {0}".format(self.service_name),
stdin=open(self.fault_script, "r"))
if exit_status != 0:
monitorInstance.stop()
raise RuntimeError(stderr)
self.need_teardown = True
time.sleep(self.fault_time)
monitorInstance.stop()
LOG.info("monitor stop!")
ret = monitorInstance.get_result()
LOG.info("The monitor result:%s" % ret)
outage_time = ret.get("outage_time")
result["outage_time"] = outage_time
LOG.info("the result:%s" % result)
if "sla" in self.scenario_cfg:
sla_outage_time = int(self.scenario_cfg["sla"]["outage_time"])
assert outage_time <= sla_outage_time, "outage_time %f > sla:outage_time(%f)" % \
(outage_time, sla_outage_time)
return
def teardown(self):
'''scenario teardown'''
LOG.info("recory the everiment!")
if self.need_teardown:
exit_status, stdout, stderr = self.connection.execute(
"/bin/sh -s {0} ".format(self.service_name),
stdin=open(self.recovery_script, "r"))
if exit_status:
raise RuntimeError(stderr)
else:
self.need_teardown = False
"""
def _test():
'''internal test function'''
host = {
"ip": "10.20.0.5",
"user": "root",
"key_filename": "/root/.ssh/id_rsa"
}
ctx = {"host": host}
logger = logging.getLogger("yardstick")
logger.setLevel(logging.DEBUG)
options = {
"component": "nova-api",
"fault_type": "stop-service"
}
sla = {"outage_time": 5}
args = {"options": options, "sla": sla}
print "create instance"
terstInstance = ServiceHA(args, ctx)
terstInstance.setup()
result = {}
terstInstance.run(result)
print result
terstInstance.teardown()
if __name__ == '__main__':
_test()
"""
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