root / snf-tools / synnefo_tools / burnin / common.py @ 6c78720b
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# Copyright 2013 GRNET S.A. All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or
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# without modification, are permitted provided that the following
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# conditions are met:
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#
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# 1. Redistributions of source code must retain the above
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# copyright notice, this list of conditions and the following
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# disclaimer.
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#
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# 2. Redistributions in binary form must reproduce the above
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# copyright notice, this list of conditions and the following
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# disclaimer in the documentation and/or other materials
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# provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
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# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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# The views and conclusions contained in the software and
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# documentation are those of the authors and should not be
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# interpreted as representing official policies, either expressed
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# or implied, of GRNET S.A.
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"""
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Common utils for burnin tests
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"""
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import os |
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import re |
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import time |
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import shutil |
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import socket |
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import random |
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import unittest |
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import datetime |
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import tempfile |
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import traceback |
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import subprocess |
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from kamaki.clients.cyclades import CycladesClient |
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from kamaki.clients.astakos import AstakosClient |
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from kamaki.clients.compute import ComputeClient |
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from kamaki.clients.pithos import PithosClient |
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from kamaki.clients.image import ImageClient |
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from synnefo_tools.burnin.logger import Log |
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# --------------------------------------------------------------------
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# Global variables
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logger = None # Invalid constant name. pylint: disable-msg=C0103 |
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SNF_TEST_PREFIX = "snf-test-"
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CONNECTION_RETRY_LIMIT = 2
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SYSTEM_USERS = ["images@okeanos.grnet.gr", "images@demo.synnefo.org"] |
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# --------------------------------------------------------------------
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# BurninTestResult class
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class BurninTestResult(unittest.TestResult): |
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"""Modify the TextTestResult class"""
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def __init__(self): |
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super(BurninTestResult, self).__init__() |
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# Test parameters
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self.failfast = True |
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def startTest(self, test): # noqa |
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"""Called when the test case test is about to be run"""
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super(BurninTestResult, self).startTest(test) |
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logger.log(test.__class__.__name__, test.shortDescription()) |
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# Method could be a function. pylint: disable-msg=R0201
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def _test_failed(self, test, err): |
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"""Test failed"""
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# Get class name
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if test.__class__.__name__ == "_ErrorHolder": |
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class_name = test.id().split('.')[-1].rstrip(')') |
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else:
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class_name = test.__class__.__name__ |
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err_msg = str(test) + "... failed (%s)." |
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timestamp = datetime.datetime.strftime( |
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datetime.datetime.now(), "%a %b %d %Y %H:%M:%S")
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logger.error(class_name, err_msg, timestamp) |
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(err_type, err_value, err_trace) = err |
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trcback = traceback.format_exception(err_type, err_value, err_trace) |
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logger.info(class_name, trcback) |
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def addError(self, test, err): # noqa |
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"""Called when the test case test raises an unexpected exception"""
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super(BurninTestResult, self).addError(test, err) |
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self._test_failed(test, err)
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def addFailure(self, test, err): # noqa |
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"""Called when the test case test signals a failure"""
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super(BurninTestResult, self).addFailure(test, err) |
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self._test_failed(test, err)
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# --------------------------------------------------------------------
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# BurninTests class
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# Too few public methods. pylint: disable-msg=R0903
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# Too many instance attributes. pylint: disable-msg=R0902
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class Clients(object): |
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"""Our kamaki clients"""
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auth_url = None
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token = None
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# Astakos
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astakos = None
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retry = CONNECTION_RETRY_LIMIT |
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# Compute
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compute = None
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compute_url = None
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# Cyclades
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cyclades = None
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# Pithos
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pithos = None
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pithos_url = None
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# Image
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image = None
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image_url = None
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# Too many public methods (45/20). pylint: disable-msg=R0904
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class BurninTests(unittest.TestCase): |
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"""Common class that all burnin tests should implement"""
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clients = Clients() |
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run_id = None
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use_ipv6 = None
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action_timeout = None
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action_warning = None
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query_interval = None
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system_user = None
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images = None
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flavors = None
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@classmethod
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def setUpClass(cls): # noqa |
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"""Initialize BurninTests"""
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cls.suite_name = cls.__name__ |
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logger.testsuite_start(cls.suite_name) |
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# Set test parameters
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cls.longMessage = True
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def test_000_clients_setup(self): |
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"""Initializing astakos/cyclades/pithos clients"""
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# Update class attributes
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self.info("Astakos auth url is %s", self.clients.auth_url) |
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self.clients.astakos = AstakosClient(
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self.clients.auth_url, self.clients.token) |
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self.clients.astakos.CONNECTION_RETRY_LIMIT = self.clients.retry |
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self.clients.compute_url = \
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self.clients.astakos.get_service_endpoints('compute')['publicURL'] |
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self.info("Cyclades url is %s", self.clients.compute_url) |
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self.clients.compute = ComputeClient(
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self.clients.compute_url, self.clients.token) |
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self.clients.compute.CONNECTION_RETRY_LIMIT = self.clients.retry |
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self.clients.cyclades = CycladesClient(
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self.clients.compute_url, self.clients.token) |
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self.clients.cyclades.CONNECTION_RETRY_LIMIT = self.clients.retry |
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self.clients.pithos_url = self.clients.astakos.\ |
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get_service_endpoints('object-store')['publicURL'] |
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self.info("Pithos url is %s", self.clients.pithos_url) |
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self.clients.pithos = PithosClient(
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self.clients.pithos_url, self.clients.token) |
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self.clients.pithos.CONNECTION_RETRY_LIMIT = self.clients.retry |
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self.clients.image_url = \
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self.clients.astakos.get_service_endpoints('image')['publicURL'] |
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self.info("Image url is %s", self.clients.image_url) |
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self.clients.image = ImageClient(
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self.clients.image_url, self.clients.token) |
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self.clients.image.CONNECTION_RETRY_LIMIT = self.clients.retry |
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# ----------------------------------
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# Loggers helper functions
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def log(self, msg, *args): |
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"""Pass the section value to logger"""
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logger.log(self.suite_name, msg, *args)
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def info(self, msg, *args): |
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"""Pass the section value to logger"""
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logger.info(self.suite_name, msg, *args)
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def debug(self, msg, *args): |
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"""Pass the section value to logger"""
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logger.debug(self.suite_name, msg, *args)
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def warning(self, msg, *args): |
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"""Pass the section value to logger"""
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logger.warning(self.suite_name, msg, *args)
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def error(self, msg, *args): |
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"""Pass the section value to logger"""
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logger.error(self.suite_name, msg, *args)
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# ----------------------------------
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# Helper functions that every testsuite may need
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def _get_uuid(self): |
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"""Get our uuid"""
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authenticate = self.clients.astakos.authenticate()
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uuid = authenticate['access']['user']['id'] |
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self.info("User's uuid is %s", uuid) |
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return uuid
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def _get_username(self): |
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"""Get our User Name"""
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authenticate = self.clients.astakos.authenticate()
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username = authenticate['access']['user']['name'] |
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self.info("User's name is %s", username) |
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return username
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def _create_tmp_directory(self): |
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"""Create a tmp directory
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In my machine /tmp has not enough space for an image
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to be saves, so we are going to use the current directory.
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"""
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temp_dir = tempfile.mkdtemp(dir=os.getcwd()) |
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self.info("Temp directory %s created", temp_dir) |
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return temp_dir
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def _remove_tmp_directory(self, tmp_dir): |
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"""Remove a tmp directory"""
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try:
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shutil.rmtree(tmp_dir) |
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self.info("Temp directory %s deleted", tmp_dir) |
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except OSError: |
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pass
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def _get_uuid_of_system_user(self): |
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"""Get the uuid of the system user
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This is the user that upload the 'official' images.
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"""
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self.info("Getting the uuid of the system user") |
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system_users = None
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if self.system_user is not None: |
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parsed_su = parse_typed_option(self.system_user)
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if parsed_su is None: |
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msg = "Invalid system-user format: %s. Must be [id|name]:.+"
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self.warning(msg, self.system_user) |
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else:
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su_type, su_value = parsed_su |
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if su_type == "name": |
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system_users = [su_value] |
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elif su_type == "id": |
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self.info("System user's uuid is %s", su_value) |
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return su_value
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else:
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self.error("Unrecognized system-user type %s", su_type) |
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self.fail("Unrecognized system-user type") |
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if system_users is None: |
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system_users = SYSTEM_USERS |
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uuids = self.clients.astakos.usernames2uuids(system_users)
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for su_name in system_users: |
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self.info("Trying username %s", su_name) |
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if su_name in uuids: |
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self.info("System user's uuid is %s", uuids[su_name]) |
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return uuids[su_name]
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self.warning("No system user found") |
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return None |
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def _try_until_timeout_expires(self, opmsg, check_fun): |
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"""Try to perform an action until timeout expires"""
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assert callable(check_fun), "Not a function" |
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action_timeout = self.action_timeout
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action_warning = self.action_warning
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if action_warning > action_timeout:
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action_warning = action_timeout |
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start_time = time.time() |
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while (start_time + action_warning) > time.time():
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try:
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return check_fun()
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except Retry:
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time.sleep(self.query_interval)
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self.warning("Operation `%s' is taking too long", opmsg) |
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while (start_time + action_timeout) > time.time():
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try:
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return check_fun()
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except Retry:
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time.sleep(self.query_interval)
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self.error("Operation `%s' timed out", opmsg) |
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self.fail("time out") |
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def _skip_if(self, condition, msg): |
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"""Skip tests"""
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if condition:
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self.info("Test skipped: %s" % msg) |
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self.skipTest(msg)
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# ----------------------------------
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# Flavors
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def _get_list_of_flavors(self, detail=False): |
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"""Get (detailed) list of flavors"""
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if detail:
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self.info("Getting detailed list of flavors") |
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else:
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self.info("Getting simple list of flavors") |
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flavors = self.clients.compute.list_flavors(detail=detail)
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return flavors
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def _find_flavors(self, patterns, flavors=None): |
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"""Find a list of suitable flavors to use
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The patterns is a list of `typed_options'. A list of all flavors
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matching this patterns will be returned.
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"""
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if flavors is None: |
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flavors = self._get_list_of_flavors(detail=True) |
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ret_flavors = [] |
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for ptrn in patterns: |
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parsed_ptrn = parse_typed_option(ptrn) |
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if parsed_ptrn is None: |
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msg = "Invalid flavor format: %s. Must be [id|name]:.+"
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self.warning(msg, ptrn)
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continue
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flv_type, flv_value = parsed_ptrn |
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if flv_type == "name": |
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# Filter flavor by name
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msg = "Trying to find a flavor with name %s"
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self.info(msg, flv_value)
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filtered_flvs = \ |
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[f for f in flavors if |
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re.search(flv_value, f['name'], flags=re.I) is not None] |
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elif flv_type == "id": |
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# Filter flavors by id
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msg = "Trying to find a flavor with id %s"
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self.info(msg, flv_value)
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filtered_flvs = \ |
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[f for f in flavors if str(f['id']) == flv_value] |
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else:
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self.error("Unrecognized flavor type %s", flv_type) |
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self.fail("Unrecognized flavor type") |
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# Append and continue
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ret_flavors.extend(filtered_flvs) |
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self.assertGreater(len(ret_flavors), 0, |
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"No matching flavors found")
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return ret_flavors
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# ----------------------------------
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# Images
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def _get_list_of_images(self, detail=False): |
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"""Get (detailed) list of images"""
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if detail:
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self.info("Getting detailed list of images") |
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else:
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self.info("Getting simple list of images") |
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images = self.clients.image.list_public(detail=detail)
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# Remove images registered by burnin
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images = [img for img in images |
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if not img['name'].startswith(SNF_TEST_PREFIX)] |
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return images
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def _get_list_of_sys_images(self, images=None): |
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"""Get (detailed) list of images registered by system user or by me"""
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self.info("Getting list of images registered by system user or by me") |
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if images is None: |
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images = self._get_list_of_images(detail=True) |
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su_uuid = self._get_uuid_of_system_user()
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my_uuid = self._get_uuid()
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ret_images = [i for i in images |
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if i['owner'] == su_uuid or i['owner'] == my_uuid] |
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return ret_images
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def _find_images(self, patterns, images=None): |
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"""Find a list of suitable images to use
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The patterns is a list of `typed_options'. A list of all images
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matching this patterns will be returned.
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"""
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if images is None: |
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images = self._get_list_of_sys_images()
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ret_images = [] |
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for ptrn in patterns: |
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parsed_ptrn = parse_typed_option(ptrn) |
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if parsed_ptrn is None: |
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msg = "Invalid image format: %s. Must be [id|name]:.+"
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self.warning(msg, ptrn)
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continue
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img_type, img_value = parsed_ptrn |
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if img_type == "name": |
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# Filter image by name
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msg = "Trying to find an image with name %s"
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self.info(msg, img_value)
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filtered_imgs = \ |
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[i for i in images if |
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re.search(img_value, i['name'], flags=re.I) is not None] |
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elif img_type == "id": |
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# Filter images by id
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msg = "Trying to find an image with id %s"
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self.info(msg, img_value)
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filtered_imgs = \ |
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[i for i in images if |
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i['id'].lower() == img_value.lower()]
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else:
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self.error("Unrecognized image type %s", img_type) |
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self.fail("Unrecognized image type") |
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# Append and continue
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ret_images.extend(filtered_imgs) |
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self.assertGreater(len(ret_images), 0, |
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"No matching images found")
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return ret_images
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# ----------------------------------
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# Pithos
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def _set_pithos_account(self, account): |
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"""Set the Pithos account"""
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assert account, "No pithos account was given" |
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self.info("Setting Pithos account to %s", account) |
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self.clients.pithos.account = account
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def _set_pithos_container(self, container): |
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"""Set the Pithos container"""
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assert container, "No pithos container was given" |
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self.info("Setting Pithos container to %s", container) |
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self.clients.pithos.container = container
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def _get_list_of_containers(self, account=None): |
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"""Get list of containers"""
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if account is not None: |
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self._set_pithos_account(account)
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self.info("Getting list of containers") |
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return self.clients.pithos.list_containers() |
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def _create_pithos_container(self, container): |
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"""Create a pithos container
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If the container exists, nothing will happen
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"""
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assert container, "No pithos container was given" |
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self.info("Creating pithos container %s", container) |
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self.clients.pithos.container = container
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self.clients.pithos.container_put()
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|
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# ----------------------------------
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# Servers
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def _get_list_of_servers(self, detail=False): |
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"""Get (detailed) list of servers"""
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if detail:
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self.info("Getting detailed list of servers") |
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else:
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self.info("Getting simple list of servers") |
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return self.clients.cyclades.list_servers(detail=detail) |
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def _get_server_details(self, server): |
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"""Get details for a server"""
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self.info("Getting details for server %s with id %s", |
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server['name'], server['id']) |
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return self.clients.cyclades.get_server_details(server['id']) |
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|
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def _create_server(self, name, image, flavor): |
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"""Create a new server"""
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self.info("Creating a server with name %s", name) |
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self.info("Using image %s with id %s", image['name'], image['id']) |
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self.info("Using flavor %s with id %s", flavor['name'], flavor['id']) |
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server = self.clients.cyclades.create_server(
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name, flavor['id'], image['id']) |
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self.info("Server id: %s", server['id']) |
496 |
self.info("Server password: %s", server['adminPass']) |
497 |
|
498 |
self.assertEqual(server['name'], name) |
499 |
self.assertEqual(server['flavor']['id'], flavor['id']) |
500 |
self.assertEqual(server['image']['id'], image['id']) |
501 |
self.assertEqual(server['status'], "BUILD") |
502 |
|
503 |
return server
|
504 |
|
505 |
def _get_connection_username(self, server): |
506 |
"""Determine the username to use to connect to the server"""
|
507 |
users = server['metadata'].get("users", None) |
508 |
ret_user = None
|
509 |
if users is not None: |
510 |
user_list = users.split() |
511 |
if "root" in user_list: |
512 |
ret_user = "root"
|
513 |
else:
|
514 |
ret_user = random.choice(user_list) |
515 |
else:
|
516 |
# Return the login name for connections based on the server OS
|
517 |
self.info("Could not find `users' metadata in server. Let's guess") |
518 |
os_value = server['metadata'].get("os") |
519 |
if os_value in ("Ubuntu", "Kubuntu", "Fedora"): |
520 |
ret_user = "user"
|
521 |
elif os_value in ("windows", "windows_alpha1"): |
522 |
ret_user = "Administrator"
|
523 |
else:
|
524 |
ret_user = "root"
|
525 |
|
526 |
self.assertIsNotNone(ret_user)
|
527 |
self.info("User's login name: %s", ret_user) |
528 |
return ret_user
|
529 |
|
530 |
def _insist_on_server_transition(self, server, curr_status, new_status): |
531 |
"""Insist on server transiting from curr_status to new_status"""
|
532 |
def check_fun(): |
533 |
"""Check server status"""
|
534 |
srv = self.clients.cyclades.get_server_details(server['id']) |
535 |
if srv['status'] == curr_status: |
536 |
raise Retry()
|
537 |
elif srv['status'] == new_status: |
538 |
return
|
539 |
else:
|
540 |
msg = "Server %s went to unexpected status %s"
|
541 |
self.error(msg, server['name'], srv['status']) |
542 |
self.fail(msg % (server['name'], srv['status'])) |
543 |
opmsg = "Waiting for server %s to transit from %s to %s"
|
544 |
self.info(opmsg, server['name'], curr_status, new_status) |
545 |
opmsg = opmsg % (server['name'], curr_status, new_status)
|
546 |
self._try_until_timeout_expires(opmsg, check_fun)
|
547 |
|
548 |
def _insist_on_tcp_connection(self, family, host, port): |
549 |
"""Insist on tcp connection"""
|
550 |
def check_fun(): |
551 |
"""Get a connected socket from the specified family to host:port"""
|
552 |
sock = None
|
553 |
for res in socket.getaddrinfo(host, port, family, |
554 |
socket.SOCK_STREAM, 0,
|
555 |
socket.AI_PASSIVE): |
556 |
fam, socktype, proto, _, saddr = res |
557 |
try:
|
558 |
sock = socket.socket(fam, socktype, proto) |
559 |
except socket.error:
|
560 |
sock = None
|
561 |
continue
|
562 |
try:
|
563 |
sock.connect(saddr) |
564 |
except socket.error:
|
565 |
sock.close() |
566 |
sock = None
|
567 |
continue
|
568 |
if sock is None: |
569 |
raise Retry
|
570 |
return sock
|
571 |
familystr = {socket.AF_INET: "IPv4", socket.AF_INET6: "IPv6", |
572 |
socket.AF_UNSPEC: "Unspecified-IPv4/6"}
|
573 |
opmsg = "Connecting over %s to %s:%s"
|
574 |
self.info(opmsg, familystr.get(family, "Unknown"), host, port) |
575 |
opmsg = opmsg % (familystr.get(family, "Unknown"), host, port)
|
576 |
return self._try_until_timeout_expires(opmsg, check_fun) |
577 |
|
578 |
def _get_ip(self, server, version): |
579 |
"""Get the public IP of a server from the detailed server info"""
|
580 |
assert version in (4, 6) |
581 |
|
582 |
nics = server['attachments']
|
583 |
public_addrs = None
|
584 |
for nic in nics: |
585 |
net_id = nic['network_id']
|
586 |
if self.clients.cyclades.get_network_details(net_id)['public']: |
587 |
public_addrs = nic['ipv' + str(version)] |
588 |
|
589 |
self.assertIsNotNone(public_addrs)
|
590 |
msg = "Servers %s public IPv%s is %s"
|
591 |
self.info(msg, server['name'], version, public_addrs) |
592 |
return public_addrs
|
593 |
|
594 |
def _insist_on_ping(self, ip_addr, version): |
595 |
"""Test server responds to a single IPv4 of IPv6 ping"""
|
596 |
def check_fun(): |
597 |
"""Ping to server"""
|
598 |
assert version in (4, 6) |
599 |
cmd = ("ping%s -c 3 -w 20 %s" %
|
600 |
("6" if version == 6 else "", ip_addr)) |
601 |
ping = subprocess.Popen( |
602 |
cmd, shell=True, stdout=subprocess.PIPE,
|
603 |
stderr=subprocess.PIPE) |
604 |
ping.communicate() |
605 |
ret = ping.wait() |
606 |
if ret != 0: |
607 |
raise Retry
|
608 |
opmsg = "Sent IPv%s ping requests to %s"
|
609 |
self.info(opmsg, version, ip_addr)
|
610 |
opmsg = opmsg % (version, ip_addr) |
611 |
self._try_until_timeout_expires(opmsg, check_fun)
|
612 |
|
613 |
|
614 |
# --------------------------------------------------------------------
|
615 |
# Initialize Burnin
|
616 |
def initialize(opts, testsuites): |
617 |
"""Initalize burnin
|
618 |
|
619 |
Initialize our logger and burnin state
|
620 |
|
621 |
"""
|
622 |
# Initialize logger
|
623 |
global logger # Using global statement. pylint: disable-msg=C0103,W0603 |
624 |
logger = Log(opts.log_folder, verbose=opts.verbose, |
625 |
use_colors=opts.use_colors, in_parallel=False,
|
626 |
quiet=opts.quiet) |
627 |
|
628 |
# Initialize clients
|
629 |
Clients.auth_url = opts.auth_url |
630 |
Clients.token = opts.token |
631 |
|
632 |
# Pass the rest options to BurninTests
|
633 |
BurninTests.use_ipv6 = opts.use_ipv6 |
634 |
BurninTests.action_timeout = opts.action_timeout |
635 |
BurninTests.action_warning = opts.action_warning |
636 |
BurninTests.query_interval = opts.query_interval |
637 |
BurninTests.system_user = opts.system_user |
638 |
BurninTests.flavors = opts.flavors |
639 |
BurninTests.images = opts.images |
640 |
BurninTests.run_id = SNF_TEST_PREFIX + \ |
641 |
datetime.datetime.strftime(datetime.datetime.now(), "%Y%m%d%H%M%S")
|
642 |
|
643 |
# Choose tests to run
|
644 |
if opts.tests != "all": |
645 |
testsuites = opts.tests |
646 |
if opts.exclude_tests is not None: |
647 |
testsuites = [tsuite for tsuite in testsuites |
648 |
if tsuite not in opts.exclude_tests] |
649 |
|
650 |
return testsuites
|
651 |
|
652 |
|
653 |
# --------------------------------------------------------------------
|
654 |
# Run Burnin
|
655 |
def run_burnin(testsuites, failfast=False, final_report=False): |
656 |
"""Run burnin testsuites"""
|
657 |
global logger # Using global. pylint: disable-msg=C0103,W0603,W0602 |
658 |
|
659 |
success = True
|
660 |
for tcase in testsuites: |
661 |
was_success = run_test(tcase) |
662 |
success = success and was_success
|
663 |
if failfast and not success: |
664 |
break
|
665 |
|
666 |
# Are we going to print final report?
|
667 |
if final_report:
|
668 |
logger.print_logfile_to_stdout() |
669 |
# Clean up our logger
|
670 |
del(logger)
|
671 |
|
672 |
# Return
|
673 |
return 0 if success else 1 |
674 |
|
675 |
|
676 |
def run_test(tcase): |
677 |
"""Run a testcase"""
|
678 |
tsuite = unittest.TestLoader().loadTestsFromTestCase(tcase) |
679 |
results = tsuite.run(BurninTestResult()) |
680 |
|
681 |
return was_successful(tcase.__name__, results.wasSuccessful())
|
682 |
|
683 |
|
684 |
# --------------------------------------------------------------------
|
685 |
# Helper functions
|
686 |
def was_successful(tsuite, success): |
687 |
"""Handle whether a testsuite was succesful or not"""
|
688 |
if success:
|
689 |
logger.testsuite_success(tsuite) |
690 |
return True |
691 |
else:
|
692 |
logger.testsuite_failure(tsuite) |
693 |
return False |
694 |
|
695 |
|
696 |
def parse_typed_option(value): |
697 |
"""Parse typed options (flavors and images)
|
698 |
|
699 |
The options are in the form 'id:123-345' or 'name:^Debian Base$'
|
700 |
|
701 |
"""
|
702 |
try:
|
703 |
[type_, val] = value.strip().split(':')
|
704 |
if type_ not in ["id", "name"]: |
705 |
raise ValueError |
706 |
return type_, val
|
707 |
except ValueError: |
708 |
return None |
709 |
|
710 |
|
711 |
class Proper(object): |
712 |
"""A descriptor used by tests implementing the TestCase class
|
713 |
|
714 |
Since each instance of the TestCase will only be used to run a single
|
715 |
test method (a new fixture is created for each test) the attributes can
|
716 |
not be saved in the class instances. Instead we use descriptors.
|
717 |
|
718 |
"""
|
719 |
def __init__(self, value=None): |
720 |
self.val = value
|
721 |
|
722 |
def __get__(self, obj, objtype=None): |
723 |
return self.val |
724 |
|
725 |
def __set__(self, obj, value): |
726 |
self.val = value
|
727 |
|
728 |
|
729 |
class Retry(Exception): |
730 |
"""Retry the action
|
731 |
|
732 |
This is used by _try_unit_timeout_expires method.
|
733 |
|
734 |
"""
|