yardstick/benchmark/scenarios/availability/monitor/basemonitor.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 pkg_resources
  10 import logging
  11 import multiprocessing
  12 import time
  13 import os
  14 import yardstick.common.utils as utils
  15
  16 LOG = logging.getLogger(__name__)
  17
  18 monitor_conf_path = pkg_resources.resource_filename(
  19     "yardstick.benchmark.scenarios.availability",
  20     "monitor_conf.yaml")
  21
  22
  23 class MonitorMgr(object):
  24     """docstring for MonitorMgr"""
  25     def __init__(self):
  26         self._monitor_list = []
  27
  28     def init_monitors(self, monitor_cfgs, context):
  29         LOG.debug("monitorMgr config: %s" % monitor_cfgs)
  30
  31         for monitor_cfg in monitor_cfgs:
  32             monitor_type = monitor_cfg["monitor_type"]
  33             monitor_cls = BaseMonitor.get_monitor_cls(monitor_type)
  34             monitor_ins = monitor_cls(monitor_cfg, context)
  35
  36             self._monitor_list.append(monitor_ins)
  37
  38     def start_monitors(self):
  39         for _monotor_instace in self._monitor_list:
  40             _monotor_instace.start_monitor()
  41
  42     def wait_monitors(self):
  43         for monitor in self._monitor_list:
  44             monitor.wait_monitor()
  45
  46     def verify_SLA(self):
  47         sla_pass = True
  48         for monitor in self._monitor_list:
  49             sla_pass = sla_pass & monitor.verify_SLA()
  50         return sla_pass
  51
  52
  53 class BaseMonitor(multiprocessing.Process):
  54     """docstring for BaseMonitor"""
  55
  56     def __init__(self, config, context):
  57         multiprocessing.Process.__init__(self)
  58         self._config = config
  59         self._context = context
  60         self._queue = multiprocessing.Queue()
  61         self._event = multiprocessing.Event()
  62         self.setup_done = False
  63
  64     @staticmethod
  65     def get_monitor_cls(monitor_type):
  66         '''return monitor class of specified type'''
  67
  68         for monitor in utils.itersubclasses(BaseMonitor):
  69             if monitor_type == monitor.__monitor_type__:
  70                 return monitor
  71         raise RuntimeError("No such monitor_type %s" % monitor_type)
  72
  73     def get_script_fullpath(self, path):
  74         base_path = os.path.dirname(monitor_conf_path)
  75         return os.path.join(base_path, path)
  76
  77     def run(self):
  78         LOG.debug("config:%s context:%s" % (self._config, self._context))
  79
  80         self.setup()
  81         monitor_time = self._config.get("monitor_time", 0)
  82
  83         total_time = 0
  84         outage_time = 0
  85         total_count = 0
  86         outage_count = 0
  87         first_outage = 0
  88         last_outage = 0
  89
  90         begin_time = time.time()
  91         while True:
  92             total_count = total_count + 1
  93
  94             one_check_begin_time = time.time()
  95             exit_status = self.monitor_func()
  96             one_check_end_time = time.time()
  97
  98             if exit_status is False:
  99                 outage_count = outage_count + 1
 100
 101                 outage_time = outage_time + (
 102                     one_check_end_time - one_check_begin_time)
 103
 104                 if not first_outage:
 105                     first_outage = one_check_begin_time
 106
 107                 last_outage = one_check_end_time
 108
 109             if self._event.is_set():
 110                 LOG.debug("the monitor process stop")
 111                 break
 112
 113             if one_check_end_time - begin_time > monitor_time:
 114                 LOG.debug("the monitor max_time finished and exit!")
 115                 break
 116
 117         end_time = time.time()
 118         total_time = end_time - begin_time
 119
 120         self._queue.put({"total_time": total_time,
 121                          "outage_time": last_outage-first_outage,
 122                          "total_count": total_count,
 123                          "outage_count": outage_count})
 124
 125     def start_monitor(self):
 126         self.start()
 127
 128     def wait_monitor(self):
 129         self.join()
 130         self._result = self._queue.get()
 131         LOG.debug("the monitor result:%s" % self._result)
 132
 133     def setup(self):  # pragma: no cover
 134         pass
 135
 136     def monitor_func(self):  # pragma: no cover
 137         pass
 138
 139     def verify_SLA(self):
 140         pass