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 from __future__ import absolute_import
  10 import pkg_resources
  11 import logging
  12 import multiprocessing
  13 import time
  14 import os
  15 import yardstick.common.utils as utils
  16 import yaml
  17
  18 LOG = logging.getLogger(__name__)
  19
  20 monitor_conf_path = pkg_resources.resource_filename(
  21     "yardstick.benchmark.scenarios.availability",
  22     "monitor_conf.yaml")
  23
  24
  25 class MonitorMgr(object):
  26     """docstring for MonitorMgr"""
  27
  28     def __init__(self):
  29         self._monitor_list = []
  30
  31     def init_monitors(self, monitor_cfgs, context):
  32         LOG.debug("monitorMgr config: %s", monitor_cfgs)
  33
  34         for monitor_cfg in monitor_cfgs:
  35             monitor_type = monitor_cfg["monitor_type"]
  36             monitor_cls = BaseMonitor.get_monitor_cls(monitor_type)
  37             monitor_ins = monitor_cls(monitor_cfg, context)
  38             if "key" in monitor_cfg:
  39                 monitor_ins.key = monitor_cfg["key"]
  40             self._monitor_list.append(monitor_ins)
  41
  42     def __getitem__(self, item):
  43         for obj in self._monitor_list:
  44             if obj.key == item:
  45                 return obj
  46         raise KeyError("No such monitor instance of key - %s" % item)
  47
  48     def start_monitors(self):
  49         for _monotor_instace in self._monitor_list:
  50             _monotor_instace.start_monitor()
  51
  52     def wait_monitors(self):
  53         for monitor in self._monitor_list:
  54             monitor.wait_monitor()
  55
  56     def verify_SLA(self):
  57         sla_pass = True
  58         for monitor in self._monitor_list:
  59             sla_pass = sla_pass & monitor.verify_SLA()
  60         return sla_pass
  61
  62
  63 class BaseMonitor(multiprocessing.Process):
  64     """docstring for BaseMonitor"""
  65     monitor_cfgs = {}
  66
  67     def __init__(self, config, context):
  68         if not BaseMonitor.monitor_cfgs:
  69             with open(monitor_conf_path) as stream:
  70                 BaseMonitor.monitor_cfgs = yaml.load(stream)
  71         multiprocessing.Process.__init__(self)
  72         self._config = config
  73         self._context = context
  74         self._queue = multiprocessing.Queue()
  75         self._event = multiprocessing.Event()
  76         self.setup_done = False
  77
  78     @staticmethod
  79     def get_monitor_cls(monitor_type):
  80         '''return monitor class of specified type'''
  81
  82         for monitor in utils.itersubclasses(BaseMonitor):
  83             if monitor_type == monitor.__monitor_type__:
  84                 return monitor
  85         raise RuntimeError("No such monitor_type %s" % monitor_type)
  86
  87     def get_script_fullpath(self, path):
  88         base_path = os.path.dirname(monitor_conf_path)
  89         return os.path.join(base_path, path)
  90
  91     def run(self):
  92         LOG.debug("config:%s context:%s", self._config, self._context)
  93
  94         self.setup()
  95         monitor_time = self._config.get("monitor_time", 0)
  96
  97         total_time = 0
  98         outage_time = 0
  99         total_count = 0
 100         outage_count = 0
 101         first_outage = 0
 102         last_outage = 0
 103
 104         begin_time = time.time()
 105         while True:
 106             total_count = total_count + 1
 107
 108             one_check_begin_time = time.time()
 109             exit_status = self.monitor_func()
 110             one_check_end_time = time.time()
 111
 112             if exit_status is False:
 113                 outage_count = outage_count + 1
 114
 115                 outage_time = outage_time + (
 116                     one_check_end_time - one_check_begin_time)
 117
 118                 if not first_outage:
 119                     first_outage = one_check_begin_time
 120
 121                 last_outage = one_check_end_time
 122
 123             if self._event.is_set():
 124                 LOG.debug("the monitor process stop")
 125                 break
 126
 127             if one_check_end_time - begin_time > monitor_time:
 128                 LOG.debug("the monitor max_time finished and exit!")
 129                 break
 130
 131         end_time = time.time()
 132         total_time = end_time - begin_time
 133
 134         self._queue.put({"total_time": total_time,
 135                          "outage_time": last_outage - first_outage,
 136                          "total_count": total_count,
 137                          "outage_count": outage_count})
 138
 139     def start_monitor(self):
 140         self.start()
 141
 142     def wait_monitor(self):
 143         self.join()
 144         self._result = self._queue.get()
 145         LOG.debug("the monitor result:%s", self._result)
 146
 147     def setup(self):  # pragma: no cover
 148         pass
 149
 150     def monitor_func(self):  # pragma: no cover
 151         pass
 152
 153     def verify_SLA(self):
 154         pass