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
  26         self.connection = ssh.SSH.from_node(host, defaults={"user": "root"})
  27         self.connection.wait(timeout=600)
  28         LOG.debug("ssh host success!")
  29         self.check_script = self.get_script_fullpath(
  30             "ha_tools/check_process_python.bash")
  31         self.process_name = self._config["process_name"]
  32
  33     def monitor_func(self):
  34         with open(self.check_script, "r") as stdin_file:
  35             exit_status, stdout, stderr = self.connection.execute(
  36                 "/bin/sh -s {0}".format(self.process_name),
  37                 stdin=stdin_file)
  38         if not stdout or int(stdout) <= 0:
  39             LOG.info("the process (%s) is not running!", self.process_name)
  40             return False
  41
  42         return True
  43
  44     def verify_SLA(self):
  45         LOG.debug("the _result:%s", self._result)
  46         outage_time = self._result.get('outage_time', None)
  47         max_outage_time = self._config["sla"]["max_recover_time"]
  48         if outage_time > max_outage_time:
  49             LOG.error("SLA failure: %f > %f", outage_time, max_outage_time)
  50             return False
  51         else:
  52             return True
  53
  54
  55 def _test():    # pragma: no cover
  56     host = {
  57         "ip": "10.20.0.5",
  58         "user": "root",
  59         "key_filename": "/root/.ssh/id_rsa"
  60     }
  61     context = {"node1": host}
  62     monitor_configs = []
  63     config = {
  64         'monitor_type': 'process',
  65         'process_name': 'nova-api',
  66         'host': "node1",
  67         'monitor_time': 1,
  68         'sla': {'max_recover_time': 5}
  69     }
  70     monitor_configs.append(config)
  71
  72     p = basemonitor.MonitorMgr()
  73     p.init_monitors(monitor_configs, context)
  74     p.start_monitors()
  75     p.wait_monitors()
  76     p.verify_SLA()
  77
  78
  79 if __name__ == '__main__':    # pragma: no cover
  80     _test()