yardstick/benchmark/scenarios/availability/monitor/monitor_command.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 subprocess
  12 import traceback
  13
  14 import yardstick.ssh as ssh
  15 from yardstick.benchmark.scenarios.availability.monitor import basemonitor
  16
  17 LOG = logging.getLogger(__name__)
  18
  19
  20 def _execute_shell_command(command):
  21     """execute shell script with error handling"""
  22     exitcode = 0
  23     output = []
  24     try:
  25         output = subprocess.check_output(command, shell=True)
  26     except Exception:
  27         exitcode = -1
  28         output = traceback.format_exc()
  29         LOG.error("exec command '%s' error:\n ", command)
  30         LOG.error(traceback.format_exc())
  31
  32     return exitcode, output
  33
  34
  35 class MonitorOpenstackCmd(basemonitor.BaseMonitor):
  36     """docstring for MonitorApi"""
  37
  38     __monitor_type__ = "openstack-cmd"
  39
  40     def setup(self):
  41         self.connection = None
  42         node_name = self._config.get("host", None)
  43         if node_name:
  44             host = self._context[node_name]
  45
  46             self.connection = ssh.SSH.from_node(host,
  47                                                 defaults={"user": "root"})
  48             self.connection.wait(timeout=600)
  49             LOG.debug("ssh host success!")
  50
  51         self.check_script = self.get_script_fullpath(
  52             "ha_tools/check_openstack_cmd.bash")
  53
  54         self.cmd = self._config["command_name"]
  55
  56     def monitor_func(self):
  57         exit_status = 0
  58         if self.connection:
  59             with open(self.check_script, "r") as stdin_file:
  60                 exit_status, stdout, stderr = self.connection.execute(
  61                     "/bin/bash -s '{0}'".format(self.cmd),
  62                     stdin=stdin_file)
  63
  64             LOG.debug("the ret stats: %s stdout: %s stderr: %s",
  65                       exit_status, stdout, stderr)
  66         else:
  67             exit_status, stdout = _execute_shell_command(self.cmd)
  68         if exit_status:
  69             return False
  70         return True
  71
  72     def verify_SLA(self):
  73         outage_time = self._result.get('outage_time', None)
  74         LOG.debug("the _result:%s", self._result)
  75         max_outage_time = self._config["sla"]["max_outage_time"]
  76         if outage_time > max_outage_time:
  77             LOG.info("SLA failure: %f > %f", outage_time, max_outage_time)
  78             return False
  79         else:
  80             LOG.info("the sla is passed")
  81             return True
  82
  83
  84 def _test():    # pragma: no cover
  85     host = {
  86         "ip": "192.168.235.22",
  87         "user": "root",
  88         "key_filename": "/root/.ssh/id_rsa"
  89     }
  90     context = {"node1": host}
  91     monitor_configs = []
  92     config = {
  93         'monitor_type': 'openstack-cmd',
  94         'command_name': 'nova image-list',
  95         'monitor_time': 1,
  96         'host': 'node1',
  97         'sla': {'max_outage_time': 5}
  98     }
  99     monitor_configs.append(config)
 100
 101     p = basemonitor.MonitorMgr()
 102     p.init_monitors(monitor_configs, context)
 103     p.start_monitors()
 104     p.wait_monitors()
 105     p.verify_SLA()
 106
 107
 108 if __name__ == '__main__':    # pragma: no cover
 109     _test()