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