96 lines
3.2 KiB
Python
96 lines
3.2 KiB
Python
# (c) Copyright 2013 Hewlett-Packard Development Company, L.P.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import abc
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import signal
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import sys
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from oslo_log import log as logging
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import six
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@six.add_metaclass(abc.ABCMeta)
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class StressAction(object):
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def __init__(self, manager, max_runs=None, stop_on_error=False):
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full_cname = self.__module__ + "." + self.__class__.__name__
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self.logger = logging.getLogger(full_cname)
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self.manager = manager
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self.max_runs = max_runs
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self.stop_on_error = stop_on_error
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def _shutdown_handler(self, signal, frame):
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try:
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self.tearDown()
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except Exception:
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self.logger.exception("Error while tearDown")
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sys.exit(0)
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@property
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def action(self):
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"""This methods returns the action.
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Overload this if you create a stress test wrapper.
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"""
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return self.__class__.__name__
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def setUp(self, **kwargs):
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"""Initialize test structures/resources
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This method is called before "run" method to help the test
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initialize any structures. kwargs contains arguments passed
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in from the configuration json file.
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setUp doesn't count against the time duration.
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"""
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self.logger.debug("setUp")
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def tearDown(self):
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"""Cleanup test structures/resources
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This method is called to do any cleanup after the test is complete.
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"""
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self.logger.debug("tearDown")
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def execute(self, shared_statistic):
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"""This is the main execution entry point called by the driver.
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We register a signal handler to allow us to tearDown gracefully,
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and then exit. We also keep track of how many runs we do.
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"""
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signal.signal(signal.SIGHUP, self._shutdown_handler)
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signal.signal(signal.SIGTERM, self._shutdown_handler)
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while self.max_runs is None or (shared_statistic['runs'] <
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self.max_runs):
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self.logger.debug("Trigger new run (run %d)" %
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shared_statistic['runs'])
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try:
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self.run()
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except Exception:
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shared_statistic['fails'] += 1
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self.logger.exception("Failure in run")
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finally:
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shared_statistic['runs'] += 1
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if self.stop_on_error and (shared_statistic['fails'] > 1):
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self.logger.warning("Stop process due to"
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"\"stop-on-error\" argument")
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self.tearDown()
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sys.exit(1)
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@abc.abstractmethod
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def run(self):
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"""This method is where the stress test code runs."""
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return
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