449 lines
15 KiB
Python
449 lines
15 KiB
Python
# Copyright (c) 2011 OpenStack, LLC.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import json
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from sys import exc_info
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from time import time
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from unittest import main, TestCase
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from swift.common import internal_client
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from swift.obj import expirer
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from swift.proxy.server import Application
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def not_random():
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return 0.5
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last_not_sleep = 0
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def not_sleep(seconds):
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global last_not_sleep
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last_not_sleep = seconds
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class MockLogger(object):
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def __init__(self):
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self.debugs = []
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self.infos = []
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self.exceptions = []
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def debug(self, msg):
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self.debugs.append(msg)
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def info(self, msg):
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self.infos.append(msg)
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def exception(self, msg):
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self.exceptions.append('%s: %s' % (msg, exc_info()[1]))
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class TestObjectExpirer(TestCase):
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def setUp(self):
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global not_sleep
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self.old_loadapp = internal_client.loadapp
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self.old_sleep = internal_client.sleep
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internal_client.loadapp = lambda x: None
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internal_client.sleep = not_sleep
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def teardown(self):
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internal_client.sleep = self.old_sleep
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internal_client.loadapp = self.loadapp
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def test_report(self):
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x = expirer.ObjectExpirer({})
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x.logger = MockLogger()
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x.logger.infos = []
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x.report()
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self.assertEquals(x.logger.infos, [])
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x.logger.infos = []
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x.report(final=True)
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self.assertTrue('completed' in x.logger.infos[-1], x.logger.infos)
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self.assertTrue('so far' not in x.logger.infos[-1], x.logger.infos)
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x.logger.infos = []
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x.report_last_time = time() - x.report_interval
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x.report()
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self.assertTrue('completed' not in x.logger.infos[-1], x.logger.infos)
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self.assertTrue('so far' in x.logger.infos[-1], x.logger.infos)
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def test_run_once_nothing_to_do(self):
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x = expirer.ObjectExpirer({})
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x.logger = MockLogger()
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x.swift = 'throw error because a string does not have needed methods'
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x.run_once()
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self.assertEquals(x.logger.exceptions,
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["Unhandled exception: 'str' object has no attribute "
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"'get_account_info'"])
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def test_run_once_calls_report(self):
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class InternalClient(object):
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def get_account_info(*a, **kw):
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return 1, 2
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def iter_containers(*a, **kw):
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return []
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x = expirer.ObjectExpirer({})
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x.logger = MockLogger()
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x.swift = InternalClient()
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x.run_once()
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self.assertEquals(x.logger.exceptions, [])
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self.assertEquals(x.logger.infos,
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['Pass beginning; 1 possible containers; 2 possible objects',
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'Pass completed in 0s; 0 objects expired'])
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def test_container_timestamp_break(self):
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class InternalClient(object):
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def __init__(self, containers):
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self.containers = containers
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def get_account_info(*a, **kw):
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return 1, 2
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def iter_containers(self, *a, **kw):
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return self.containers
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def iter_objects(*a, **kw):
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raise Exception('This should not have been called')
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x = expirer.ObjectExpirer({})
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x.logger = MockLogger()
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x.swift = InternalClient([{'name': str(int(time() + 86400))}])
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x.run_once()
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self.assertEquals(x.logger.exceptions, [])
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self.assertEquals(x.logger.infos,
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['Pass beginning; 1 possible containers; 2 possible objects',
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'Pass completed in 0s; 0 objects expired'])
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# Reverse test to be sure it still would blow up the way expected.
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x = expirer.ObjectExpirer({})
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x.logger = MockLogger()
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x.swift = InternalClient([{'name': str(int(time() - 86400))}])
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x.run_once()
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self.assertEquals(x.logger.exceptions,
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['Unhandled exception: This should not have been called'])
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def test_object_timestamp_break(self):
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class InternalClient(object):
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def __init__(self, containers, objects):
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self.containers = containers
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self.objects = objects
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def get_account_info(*a, **kw):
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return 1, 2
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def iter_containers(self, *a, **kw):
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return self.containers
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def delete_container(*a, **kw):
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pass
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def iter_objects(self, *a, **kw):
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return self.objects
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def should_not_be_called(*a, **kw):
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raise Exception('This should not have been called')
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x = expirer.ObjectExpirer({})
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x.logger = MockLogger()
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x.swift = InternalClient([{'name': str(int(time() - 86400))}],
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[{'name': '%d-actual-obj' % int(time() + 86400)}])
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x.delete_actual_object = should_not_be_called
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x.run_once()
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self.assertEquals(x.logger.exceptions, [])
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self.assertEquals(x.logger.infos,
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['Pass beginning; 1 possible containers; 2 possible objects',
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'Pass completed in 0s; 0 objects expired'])
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# Reverse test to be sure it still would blow up the way expected.
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x = expirer.ObjectExpirer({})
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x.logger = MockLogger()
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ts = int(time() - 86400)
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x.swift = InternalClient([{'name': str(int(time() - 86400))}],
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[{'name': '%d-actual-obj' % ts}])
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x.delete_actual_object = should_not_be_called
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x.run_once()
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self.assertEquals(x.logger.exceptions, ['Exception while deleting '
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'object %d %d-actual-obj This should not have been called: This '
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'should not have been called' % (ts, ts)])
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def test_failed_delete_keeps_entry(self):
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class InternalClient(object):
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def __init__(self, containers, objects):
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self.containers = containers
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self.objects = objects
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def get_account_info(*a, **kw):
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return 1, 2
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def iter_containers(self, *a, **kw):
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return self.containers
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def delete_container(*a, **kw):
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pass
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def delete_object(*a, **kw):
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raise Exception('This should not have been called')
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def iter_objects(self, *a, **kw):
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return self.objects
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def deliberately_blow_up(actual_obj, timestamp):
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raise Exception('failed to delete actual object')
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def should_not_get_called(container, obj):
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raise Exception('This should not have been called')
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x = expirer.ObjectExpirer({})
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x.logger = MockLogger()
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x.iter_containers = lambda: [str(int(time() - 86400))]
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ts = int(time() - 86400)
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x.delete_actual_object = deliberately_blow_up
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x.swift = InternalClient([{'name': str(int(time() - 86400))}],
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[{'name': '%d-actual-obj' % ts}])
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x.run_once()
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self.assertEquals(x.logger.exceptions, ['Exception while deleting '
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'object %d %d-actual-obj failed to delete actual object: failed '
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'to delete actual object' % (ts, ts)])
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self.assertEquals(x.logger.infos,
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['Pass beginning; 1 possible containers; 2 possible objects',
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'Pass completed in 0s; 0 objects expired'])
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# Reverse test to be sure it still would blow up the way expected.
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x = expirer.ObjectExpirer({})
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x.logger = MockLogger()
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ts = int(time() - 86400)
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x.delete_actual_object = lambda o, t: None
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x.swift = InternalClient([{'name': str(int(time() - 86400))}],
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[{'name': '%d-actual-obj' % ts}])
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x.run_once()
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self.assertEquals(x.logger.exceptions, ['Exception while deleting '
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'object %d %d-actual-obj This should not have been called: This '
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'should not have been called' % (ts, ts)])
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def test_success_gets_counted(self):
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class InternalClient(object):
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def __init__(self, containers, objects):
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self.containers = containers
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self.objects = objects
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def get_account_info(*a, **kw):
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return 1, 2
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def iter_containers(self, *a, **kw):
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return self.containers
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def delete_container(*a, **kw):
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pass
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def delete_object(*a, **kw):
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pass
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def iter_objects(self, *a, **kw):
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return self.objects
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x = expirer.ObjectExpirer({})
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x.logger = MockLogger()
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x.delete_actual_object = lambda o, t: None
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self.assertEquals(x.report_objects, 0)
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x.swift = InternalClient([{'name': str(int(time() - 86400))}],
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[{'name': '%d-actual-obj' % int(time() - 86400)}])
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x.run_once()
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self.assertEquals(x.report_objects, 1)
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self.assertEquals(x.logger.exceptions, [])
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self.assertEquals(x.logger.infos,
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['Pass beginning; 1 possible containers; 2 possible objects',
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'Pass completed in 0s; 1 objects expired'])
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def test_failed_delete_continues_on(self):
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class InternalClient(object):
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def __init__(self, containers, objects):
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self.containers = containers
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self.objects = objects
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def get_account_info(*a, **kw):
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return 1, 2
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def iter_containers(self, *a, **kw):
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return self.containers
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def delete_container(*a, **kw):
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raise Exception('failed to delete container')
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def delete_object(*a, **kw):
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pass
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def iter_objects(self, *a, **kw):
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return self.objects
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def fail_delete_actual_object(actual_obj, timestamp):
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raise Exception('failed to delete actual object')
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x = expirer.ObjectExpirer({})
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x.logger = MockLogger()
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cts = int(time() - 86400)
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ots = int(time() - 86400)
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containers = [
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{'name': str(cts)},
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{'name': str(cts + 1)},
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]
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objects = [
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{'name': '%d-actual-obj' % ots},
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{'name': '%d-next-obj' % ots}
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]
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x.swift = InternalClient(containers, objects)
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x.delete_actual_object = fail_delete_actual_object
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x.run_once()
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self.assertEquals(x.logger.exceptions, [
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'Exception while deleting object %d %d-actual-obj failed to '
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'delete actual object: failed to delete actual object' %
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(cts, ots),
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'Exception while deleting object %d %d-next-obj failed to delete '
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'actual object: failed to delete actual object' % (cts, ots),
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'Exception while deleting container %d failed to delete '
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'container: failed to delete container' % cts,
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'Exception while deleting object %d %d-actual-obj failed to '
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'delete actual object: failed to delete actual object' %
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(cts + 1, ots),
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'Exception while deleting object %d %d-next-obj failed to delete '
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'actual object: failed to delete actual object' % (cts + 1, ots),
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'Exception while deleting container %d failed to delete '
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'container: failed to delete container' % (cts + 1)])
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self.assertEquals(x.logger.infos,
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['Pass beginning; 1 possible containers; 2 possible objects',
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'Pass completed in 0s; 0 objects expired'])
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def test_run_forever_initial_sleep_random(self):
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global last_not_sleep
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def raise_system_exit():
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raise SystemExit('test_run_forever')
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interval = 1234
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x = expirer.ObjectExpirer({'__file__': 'unit_test',
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'interval': interval})
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orig_random = expirer.random
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orig_sleep = expirer.sleep
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exc = None
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try:
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expirer.random = not_random
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expirer.sleep = not_sleep
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x.run_once = raise_system_exit
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x.run_forever()
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except SystemExit, err:
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exc = err
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finally:
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expirer.random = orig_random
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expirer.sleep = orig_sleep
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self.assertEquals(str(err), 'test_run_forever')
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self.assertEquals(last_not_sleep, 0.5 * interval)
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def test_run_forever_catches_usual_exceptions(self):
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raises = [0]
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def raise_exceptions():
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raises[0] += 1
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if raises[0] < 2:
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raise Exception('exception %d' % raises[0])
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raise SystemExit('exiting exception %d' % raises[0])
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x = expirer.ObjectExpirer({})
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x.logger = MockLogger()
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orig_sleep = expirer.sleep
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exc = None
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try:
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expirer.sleep = not_sleep
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x.run_once = raise_exceptions
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x.run_forever()
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except SystemExit, err:
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exc = err
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finally:
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expirer.sleep = orig_sleep
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self.assertEquals(str(err), 'exiting exception 2')
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self.assertEquals(x.logger.exceptions,
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['Unhandled exception: exception 1'])
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def test_delete_actual_object(self):
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got_env = [None]
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def fake_app(env, start_response):
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got_env[0] = env
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start_response('204 No Content', [('Content-Length', '0')])
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return []
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internal_client.loadapp = lambda x: fake_app
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x = expirer.ObjectExpirer({})
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ts = '1234'
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x.delete_actual_object('/path/to/object', ts)
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self.assertEquals(got_env[0]['HTTP_X_IF_DELETE_AT'], ts)
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def test_delete_actual_object_handles_404(self):
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def fake_app(env, start_response):
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start_response('404 Not Found', [('Content-Length', '0')])
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return []
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internal_client.loadapp = lambda x: fake_app
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x = expirer.ObjectExpirer({})
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x.delete_actual_object('/path/to/object', '1234')
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def test_delete_actual_object_handles_412(self):
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def fake_app(env, start_response):
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start_response('412 Precondition Failed',
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[('Content-Length', '0')])
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return []
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internal_client.loadapp = lambda x: fake_app
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x = expirer.ObjectExpirer({})
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x.delete_actual_object('/path/to/object', '1234')
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def test_delete_actual_object_does_not_handle_odd_stuff(self):
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def fake_app(env, start_response):
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start_response('503 Internal Server Error',
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[('Content-Length', '0')])
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return []
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internal_client.loadapp = lambda x: fake_app
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x = expirer.ObjectExpirer({})
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exc = None
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try:
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x.delete_actual_object('/path/to/object', '1234')
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except Exception, err:
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exc = err
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finally:
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pass
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self.assertEquals(503, exc.resp.status_int)
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if __name__ == '__main__':
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main()
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