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 (%s) success!", str(host))
  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             _, stdout, _ = self.connection.execute(
  36                 "sudo /bin/sh -s {0}".format(self.process_name),
  37                 stdin=stdin_file)
  38
  39         if not stdout or int(stdout) < self.monitor_data[self.process_name]:
  40             LOG.info("the (%s) processes are in recovery!", self.process_name)
  41             return False
  42
  43         LOG.info("the (%s) processes have been fully recovered!",
  44                  self.process_name)
  45         return True
  46
  47     def verify_SLA(self):
  48         outage_time = self._result.get('outage_time', None)
  49         if self._config.get("sla"):
  50             max_outage_time = self._config["sla"]["max_recover_time"]
  51             if outage_time > max_outage_time:
  52                 LOG.info("SLA failure: %f > %f", outage_time, max_outage_time)
  53                 return False
  54         return True
  55
  56
  57 def _test():    # pragma: no cover
  58     host = {
  59         "ip": "10.20.0.5",
  60         "user": "root",
  61         "key_filename": "/root/.ssh/id_rsa"
  62     }
  63     context = {"node1": host}
  64     monitor_configs = []
  65     config = {
  66         'monitor_type': 'process',
  67         'process_name': 'nova-api',
  68         'host': "node1",
  69         'monitor_time': 1,
  70         'sla': {'max_recover_time': 5}
  71     }
  72     monitor_configs.append(config)
  73
  74     p = basemonitor.MonitorMgr({})
  75     p.init_monitors(monitor_configs, context)
  76     p.start_monitors()
  77     p.wait_monitors()
  78     p.verify_SLA()
  79
  80
  81 if __name__ == '__main__':    # pragma: no cover
  82     _test()