yardstick/benchmark/scenarios/availability/operation/baseoperation.py

   1 ##############################################################################
   2 # Copyright (c) 2016 Juan Qiu and others
   3 # juan_ qiu@tongji.edu.cn
   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 yaml
  12 import logging
  13 import os
  14
  15 import yardstick.common.utils as utils
  16
  17 LOG = logging.getLogger(__name__)
  18
  19 operation_conf_path = pkg_resources.resource_filename(
  20     "yardstick.benchmark.scenarios.availability",
  21     "operation_conf.yaml")
  22
  23
  24 class OperationMgr(object):
  25
  26     def __init__(self):
  27         self._operation_list = []
  28
  29     def init_operations(self, operation_cfgs, context):
  30         LOG.debug("operationMgr confg: %s", operation_cfgs)
  31         for cfg in operation_cfgs:
  32             operation_type = cfg['operation_type']
  33             operation_cls = BaseOperation.get_operation_cls(operation_type)
  34             operation_ins = operation_cls(cfg, context)
  35             operation_ins.key = cfg['key']
  36             operation_ins.setup()
  37             self._operation_list.append(operation_ins)
  38
  39     def __getitem__(self, item):
  40         for obj in self._operation_list:
  41             if(obj.key == item):
  42                 return obj
  43         raise KeyError("No such operation instance of key - %s" % item)
  44
  45     def rollback(self):
  46         for _instance in self._operation_list:
  47             _instance.rollback()
  48
  49
  50 class BaseOperation(object):
  51
  52     operation_cfgs = {}
  53
  54     def __init__(self, config, context):
  55         if not BaseOperation.operation_cfgs:
  56             with open(operation_conf_path) as stream:
  57                 BaseOperation.operation_cfgs = yaml.load(stream)
  58         self.key = ''
  59         self._config = config
  60         self._context = context
  61
  62     @staticmethod
  63     def get_operation_cls(type):
  64         '''return operation instance of specified type'''
  65         operation_type = type
  66         for operation_cls in utils.itersubclasses(BaseOperation):
  67             if operation_type == operation_cls.__operation__type__:
  68                 return operation_cls
  69         raise RuntimeError("No such runner_type %s" % operation_type)
  70
  71     def get_script_fullpath(self, path):
  72         base_path = os.path.dirname(operation_conf_path)
  73         return os.path.join(base_path, path)
  74
  75     def setup(self):
  76         pass
  77
  78     def run(self):
  79         pass
  80
  81     def rollback(self):
  82         pass