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 import logging
  10 import yardstick.ssh as ssh
  11
  12 import basemonitor as basemonitor
  13
  14 LOG = logging.getLogger(__name__)
  15
  16
  17 class MonitorProcess(basemonitor.BaseMonitor):
  18     """docstring for MonitorApi"""
  19
  20     __monitor_type__ = "process"
  21
  22     def setup(self):
  23         host = self._context[self._config["host"]]
  24         ip = host.get("ip", None)
  25         user = host.get("user", "root")
  26         ssh_port = host.get("ssh_port", ssh.DEFAULT_PORT)
  27         key_filename = host.get("key_filename", "~/.ssh/id_rsa")
  28
  29         self.connection = ssh.SSH(user, ip, key_filename=key_filename,
  30                                   port=ssh_port)
  31         self.connection.wait(timeout=600)
  32         LOG.debug("ssh host success!")
  33         self.check_script = self.get_script_fullpath(
  34             "ha_tools/check_process_python.bash")
  35         self.process_name = self._config["process_name"]
  36
  37     def monitor_func(self):
  38         exit_status, stdout, stderr = self.connection.execute(
  39             "/bin/sh -s {0}".format(self.process_name),
  40             stdin=open(self.check_script, "r"))
  41         if not stdout or int(stdout) <= 0:
  42             LOG.info("the process (%s) is not running!", self.process_name)
  43             return False
  44
  45         return True
  46
  47     def verify_SLA(self):
  48         LOG.debug("the _result:%s", self._result)
  49         outage_time = self._result.get('outage_time', None)
  50         max_outage_time = self._config["sla"]["max_recover_time"]
  51         if outage_time > max_outage_time:
  52             LOG.error("SLA failure: %f > %f", outage_time, max_outage_time)
  53             return False
  54         else:
  55             return True
  56
  57
  58 def _test():    # pragma: no cover
  59     host = {
  60         "ip": "10.20.0.5",
  61         "user": "root",
  62         "key_filename": "/root/.ssh/id_rsa"
  63     }
  64     context = {"node1": host}
  65     monitor_configs = []
  66     config = {
  67         'monitor_type': 'process',
  68         'process_name': 'nova-api',
  69         'host': "node1",
  70         'monitor_time': 1,
  71         'sla': {'max_recover_time': 5}
  72     }
  73     monitor_configs.append(config)
  74
  75     p = basemonitor.MonitorMgr()
  76     p.init_monitors(monitor_configs, context)
  77     p.start_monitors()
  78     p.wait_monitors()
  79     p.verify_SLA()
  80
  81
  82 if __name__ == '__main__':    # pragma: no cover
  83     _test()