yardstick/benchmark/scenarios/availability/monitor/monitor_process.py

   1 ##############################################################################
   2 # Copyright (c) 2015 Huawei Technologies Co.,Ltd. and others
   3 #
   4 # All rights reserved. This program and the accompanying materials
   5 # are made available under the terms of the Apache License, Version 2.0
   6 # which accompanies this distribution, and is available at
   7 # http://www.apache.org/licenses/LICENSE-2.0
   8 ##############################################################################
   9 from __future__ import absolute_import
  10 import logging
  11 import yardstick.ssh as ssh
  12
  13 from yardstick.benchmark.scenarios.availability.monitor import basemonitor
  14
  15 LOG = logging.getLogger(__name__)
  16
  17
  18 class MonitorProcess(basemonitor.BaseMonitor):
  19     """docstring for MonitorApi"""
  20
  21     __monitor_type__ = "process"
  22
  23     def setup(self):
  24         host = self._context[self._config["host"]]
  25         ip = host.get("ip", None)
  26         user = host.get("user", "root")
  27         ssh_port = host.get("ssh_port", ssh.DEFAULT_PORT)
  28         key_filename = host.get("key_filename", "~/.ssh/id_rsa")
  29
  30         self.connection = ssh.SSH(user, ip, key_filename=key_filename,
  31                                   port=ssh_port)
  32         self.connection.wait(timeout=600)
  33         LOG.debug("ssh host success!")
  34         self.check_script = self.get_script_fullpath(
  35             "ha_tools/check_process_python.bash")
  36         self.process_name = self._config["process_name"]
  37
  38     def monitor_func(self):
  39         with open(self.check_script, "r") as stdin_file:
  40             exit_status, stdout, stderr = self.connection.execute(
  41                 "/bin/sh -s {0}".format(self.process_name),
  42                 stdin=stdin_file)
  43         if not stdout or int(stdout) <= 0:
  44             LOG.info("the process (%s) is not running!", self.process_name)
  45             return False
  46
  47         return True
  48
  49     def verify_SLA(self):
  50         LOG.debug("the _result:%s", self._result)
  51         outage_time = self._result.get('outage_time', None)
  52         max_outage_time = self._config["sla"]["max_recover_time"]
  53         if outage_time > max_outage_time:
  54             LOG.error("SLA failure: %f > %f", outage_time, max_outage_time)
  55             return False
  56         else:
  57             return True
  58
  59
  60 def _test():    # pragma: no cover
  61     host = {
  62         "ip": "10.20.0.5",
  63         "user": "root",
  64         "key_filename": "/root/.ssh/id_rsa"
  65     }
  66     context = {"node1": host}
  67     monitor_configs = []
  68     config = {
  69         'monitor_type': 'process',
  70         'process_name': 'nova-api',
  71         'host': "node1",
  72         'monitor_time': 1,
  73         'sla': {'max_recover_time': 5}
  74     }
  75     monitor_configs.append(config)
  76
  77     p = basemonitor.MonitorMgr()
  78     p.init_monitors(monitor_configs, context)
  79     p.start_monitors()
  80     p.wait_monitors()
  81     p.verify_SLA()
  82
  83
  84 if __name__ == '__main__':    # pragma: no cover
  85     _test()