fecf196c44
Add unit test coverage for the last untested method in imagecache.py. This brings the coverage for this module to 100%. Change-Id: I9d4c0a521842bdbb72f4ae5b54839c15ab49f38e
741 lines
28 KiB
Python
741 lines
28 KiB
Python
#!/usr/bin/python
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# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2012 Michael Still and Canonical Inc
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# All Rights Reserved.
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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 cStringIO
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import hashlib
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import logging
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import os
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import shutil
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import tempfile
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import time
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from nova import test
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from nova import db
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from nova import flags
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from nova import log
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from nova import image
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from nova import utils
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from nova.virt.libvirt import imagecache
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from nova.virt.libvirt import utils as virtutils
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flags.DECLARE('instances_path', 'nova.compute.manager')
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FLAGS = flags.FLAGS
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LOG = log.getLogger(__name__)
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class ImageCacheManagerTestCase(test.TestCase):
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def setUp(self):
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super(ImageCacheManagerTestCase, self).setUp()
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self.stock_instance_names = {'instance-00000001': '123',
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'instance-00000002': '456',
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'instance-00000003': '789',
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'banana-42-hamster': '444'}
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def test_read_stored_checksum_missing(self):
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self.stubs.Set(os.path, 'exists', lambda x: False)
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csum = imagecache.read_stored_checksum('/tmp/foo')
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self.assertEquals(csum, None)
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def test_read_stored_checksum(self):
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try:
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dirname = tempfile.mkdtemp()
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fname = os.path.join(dirname, 'aaa')
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csum_input = 'fdghkfhkgjjksfdgjksjkghsdf'
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f = open('%s.sha1' % fname, 'w')
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f.write('%s\n' % csum_input)
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f.close()
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csum_output = imagecache.read_stored_checksum(fname)
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self.assertEquals(csum_input, csum_output)
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finally:
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shutil.rmtree(dirname)
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def test_list_base_images(self):
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listing = ['00000001',
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'ephemeral_0_20_None',
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'e97222e91fc4241f49a7f520d1dcf446751129b3_sm',
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'e09c675c2d1cfac32dae3c2d83689c8c94bc693b_sm',
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'e97222e91fc4241f49a7f520d1dcf446751129b3',
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'17d1b00b81642842e514494a78e804e9a511637c',
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'17d1b00b81642842e514494a78e804e9a511637c_5368709120',
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'17d1b00b81642842e514494a78e804e9a511637c_10737418240',
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'00000004']
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self.stubs.Set(os, 'listdir', lambda x: listing)
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self.stubs.Set(os.path, 'isfile', lambda x: True)
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base_dir = '/var/lib/nova/instances/_base'
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image_cache_manager = imagecache.ImageCacheManager()
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image_cache_manager._list_base_images(base_dir)
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self.assertEquals(len(image_cache_manager.unexplained_images), 6)
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expected = os.path.join(base_dir,
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'e97222e91fc4241f49a7f520d1dcf446751129b3')
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self.assertTrue(expected in image_cache_manager.unexplained_images)
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expected = os.path.join(base_dir,
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'17d1b00b81642842e514494a78e804e9a511637c_'
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'10737418240')
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self.assertTrue(expected in image_cache_manager.unexplained_images)
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unexpected = os.path.join(base_dir, '00000004')
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self.assertFalse(unexpected in image_cache_manager.unexplained_images)
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for ent in image_cache_manager.unexplained_images:
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self.assertTrue(ent.startswith(base_dir))
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self.assertEquals(len(image_cache_manager.originals), 2)
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expected = os.path.join(base_dir,
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'17d1b00b81642842e514494a78e804e9a511637c')
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self.assertTrue(expected in image_cache_manager.originals)
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unexpected = os.path.join(base_dir,
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'17d1b00b81642842e514494a78e804e9a511637c_'
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'10737418240')
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self.assertFalse(unexpected in image_cache_manager.originals)
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def test_list_running_instances(self):
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self.stubs.Set(db, 'instance_get_all',
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lambda x: [{'image_ref': 'image-1',
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'host': FLAGS.host,
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'name': 'inst-1',
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'uuid': '123'},
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{'image_ref': 'image-2',
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'host': FLAGS.host,
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'name': 'inst-2',
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'uuid': '456'},
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{'image_ref': 'image-2',
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'host': 'remotehost',
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'name': 'inst-3',
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'uuid': '789'}])
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image_cache_manager = imagecache.ImageCacheManager()
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# The argument here should be a context, but its mocked out
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image_cache_manager._list_running_instances(None)
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self.assertEqual(len(image_cache_manager.used_images), 2)
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self.assertTrue(image_cache_manager.used_images['image-1'] ==
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(1, 0, ['inst-1']))
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self.assertTrue(image_cache_manager.used_images['image-2'] ==
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(1, 1, ['inst-2', 'inst-3']))
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self.assertEqual(len(image_cache_manager.image_popularity), 2)
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self.assertEqual(image_cache_manager.image_popularity['image-1'], 1)
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self.assertEqual(image_cache_manager.image_popularity['image-2'], 2)
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def test_list_backing_images_small(self):
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self.stubs.Set(os, 'listdir',
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lambda x: ['_base', 'instance-00000001',
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'instance-00000002', 'instance-00000003'])
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self.stubs.Set(os.path, 'exists',
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lambda x: x.find('instance-') != -1)
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self.stubs.Set(virtutils, 'get_disk_backing_file',
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lambda x: 'e97222e91fc4241f49a7f520d1dcf446751129b3_sm')
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found = os.path.join(FLAGS.instances_path, '_base',
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'e97222e91fc4241f49a7f520d1dcf446751129b3_sm')
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image_cache_manager = imagecache.ImageCacheManager()
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image_cache_manager.unexplained_images = [found]
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image_cache_manager.instance_names = self.stock_instance_names
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inuse_images = image_cache_manager._list_backing_images()
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self.assertEquals(inuse_images, [found])
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self.assertEquals(len(image_cache_manager.unexplained_images), 0)
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def test_list_backing_images_resized(self):
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self.stubs.Set(os, 'listdir',
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lambda x: ['_base', 'instance-00000001',
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'instance-00000002', 'instance-00000003'])
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self.stubs.Set(os.path, 'exists',
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lambda x: x.find('instance-') != -1)
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self.stubs.Set(virtutils, 'get_disk_backing_file',
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lambda x: ('e97222e91fc4241f49a7f520d1dcf446751129b3_'
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'10737418240'))
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found = os.path.join(FLAGS.instances_path, '_base',
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'e97222e91fc4241f49a7f520d1dcf446751129b3_'
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'10737418240')
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image_cache_manager = imagecache.ImageCacheManager()
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image_cache_manager.unexplained_images = [found]
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image_cache_manager.instance_names = self.stock_instance_names
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inuse_images = image_cache_manager._list_backing_images()
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self.assertEquals(inuse_images, [found])
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self.assertEquals(len(image_cache_manager.unexplained_images), 0)
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def test_list_backing_images_instancename(self):
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self.stubs.Set(os, 'listdir',
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lambda x: ['_base', 'banana-42-hamster'])
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self.stubs.Set(os.path, 'exists',
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lambda x: x.find('banana-42-hamster') != -1)
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self.stubs.Set(virtutils, 'get_disk_backing_file',
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lambda x: 'e97222e91fc4241f49a7f520d1dcf446751129b3_sm')
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found = os.path.join(FLAGS.instances_path, '_base',
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'e97222e91fc4241f49a7f520d1dcf446751129b3_sm')
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image_cache_manager = imagecache.ImageCacheManager()
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image_cache_manager.unexplained_images = [found]
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image_cache_manager.instance_names = self.stock_instance_names
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inuse_images = image_cache_manager._list_backing_images()
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self.assertEquals(inuse_images, [found])
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self.assertEquals(len(image_cache_manager.unexplained_images), 0)
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def test_find_base_file_nothing(self):
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self.stubs.Set(os.path, 'exists', lambda x: False)
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base_dir = '/var/lib/nova/instances/_base'
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fingerprint = '549867354867'
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image_cache_manager = imagecache.ImageCacheManager()
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res = list(image_cache_manager._find_base_file(base_dir, fingerprint))
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self.assertEqual(0, len(res))
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def test_find_base_file_small(self):
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fingerprint = '968dd6cc49e01aaa044ed11c0cce733e0fa44a6a'
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self.stubs.Set(os.path, 'exists',
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lambda x: x.endswith('%s_sm' % fingerprint))
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base_dir = '/var/lib/nova/instances/_base'
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image_cache_manager = imagecache.ImageCacheManager()
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res = list(image_cache_manager._find_base_file(base_dir, fingerprint))
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base_file = os.path.join(base_dir, fingerprint + '_sm')
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self.assertTrue(res == [(base_file, True, False)])
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def test_find_base_file_resized(self):
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fingerprint = '968dd6cc49e01aaa044ed11c0cce733e0fa44a6a'
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listing = ['00000001',
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'ephemeral_0_20_None',
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'968dd6cc49e01aaa044ed11c0cce733e0fa44a6a_10737418240',
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'00000004']
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self.stubs.Set(os, 'listdir', lambda x: listing)
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self.stubs.Set(os.path, 'exists',
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lambda x: x.endswith('%s_10737418240' % fingerprint))
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self.stubs.Set(os.path, 'isfile', lambda x: True)
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base_dir = '/var/lib/nova/instances/_base'
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image_cache_manager = imagecache.ImageCacheManager()
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image_cache_manager._list_base_images(base_dir)
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res = list(image_cache_manager._find_base_file(base_dir, fingerprint))
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base_file = os.path.join(base_dir, fingerprint + '_10737418240')
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self.assertTrue(res == [(base_file, False, True)])
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def test_find_base_file_all(self):
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fingerprint = '968dd6cc49e01aaa044ed11c0cce733e0fa44a6a'
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listing = ['00000001',
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'ephemeral_0_20_None',
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'968dd6cc49e01aaa044ed11c0cce733e0fa44a6a_sm',
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'968dd6cc49e01aaa044ed11c0cce733e0fa44a6a_10737418240',
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'00000004']
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self.stubs.Set(os, 'listdir', lambda x: listing)
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self.stubs.Set(os.path, 'exists', lambda x: True)
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self.stubs.Set(os.path, 'isfile', lambda x: True)
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base_dir = '/var/lib/nova/instances/_base'
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image_cache_manager = imagecache.ImageCacheManager()
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image_cache_manager._list_base_images(base_dir)
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res = list(image_cache_manager._find_base_file(base_dir, fingerprint))
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base_file1 = os.path.join(base_dir, fingerprint)
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base_file2 = os.path.join(base_dir, fingerprint + '_sm')
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base_file3 = os.path.join(base_dir, fingerprint + '_10737418240')
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print res
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self.assertTrue(res == [(base_file1, False, False),
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(base_file2, True, False),
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(base_file3, False, True)])
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def _intercept_log_messages(self):
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mylog = log.getLogger()
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stream = cStringIO.StringIO()
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handler = logging.StreamHandler(stream)
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handler.setFormatter(log.LegacyNovaFormatter())
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mylog.logger.addHandler(handler)
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return mylog, handler, stream
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def test_verify_checksum(self):
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testdata = ('OpenStack Software delivers a massively scalable cloud '
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'operating system.')
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img = {'container_format': 'ami', 'id': '42'}
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self.flags(checksum_base_images=True)
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mylog, handler, stream = self._intercept_log_messages()
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try:
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dirname = tempfile.mkdtemp()
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fname = os.path.join(dirname, 'aaa')
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f = open(fname, 'w')
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f.write(testdata)
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f.close()
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# Checksum is valid
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f = open('%s.sha1' % fname, 'w')
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csum = hashlib.sha1()
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csum.update(testdata)
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f.write(csum.hexdigest())
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f.close()
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image_cache_manager = imagecache.ImageCacheManager()
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res = image_cache_manager._verify_checksum(img, fname)
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self.assertTrue(res)
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# Checksum is invalid
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f = open('%s.sha1' % fname, 'w')
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f.write('banana')
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f.close()
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image_cache_manager = imagecache.ImageCacheManager()
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res = image_cache_manager._verify_checksum(img, fname)
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self.assertFalse(res)
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self.assertNotEqual(stream.getvalue().find('image verification '
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'failed'), -1)
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# Checksum file missing
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os.remove('%s.sha1' % fname)
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image_cache_manager = imagecache.ImageCacheManager()
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res = image_cache_manager._verify_checksum(img, fname)
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self.assertEquals(res, None)
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# Checksum requests for a file with no checksum now have the
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# side effect of creating the checksum
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self.assertTrue(os.path.exists('%s.sha1' % fname))
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finally:
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shutil.rmtree(dirname)
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mylog.logger.removeHandler(handler)
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def _make_base_file(checksum=True):
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"""Make a base file for testing."""
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dirname = tempfile.mkdtemp()
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fname = os.path.join(dirname, 'aaa')
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base_file = open(fname, 'w')
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base_file.write('data')
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base_file.close()
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base_file = open(fname, 'r')
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if checksum:
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checksum_file = open('%s.sha1' % fname, 'w')
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checksum_file.write(utils.hash_file(base_file))
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checksum_file.close()
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base_file.close()
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return dirname, fname
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def test_remove_base_file(self):
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dirname, fname = self._make_base_file()
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try:
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image_cache_manager = imagecache.ImageCacheManager()
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image_cache_manager._remove_base_file(fname)
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# Files are initially too new to delete
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self.assertTrue(os.path.exists(fname))
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self.assertTrue(os.path.exists('%s.sha1' % fname))
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# Old files get cleaned up though
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os.utime(fname, (-1, time.time() - 3601))
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image_cache_manager._remove_base_file(fname)
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self.assertFalse(os.path.exists(fname))
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self.assertFalse(os.path.exists('%s.sha1' % fname))
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finally:
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shutil.rmtree(dirname)
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def test_remove_base_file_original(self):
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dirname, fname = self._make_base_file()
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try:
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image_cache_manager = imagecache.ImageCacheManager()
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image_cache_manager.originals = [fname]
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image_cache_manager._remove_base_file(fname)
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# Files are initially too new to delete
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self.assertTrue(os.path.exists(fname))
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self.assertTrue(os.path.exists('%s.sha1' % fname))
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# This file should stay longer than a resized image
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os.utime(fname, (-1, time.time() - 3601))
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image_cache_manager._remove_base_file(fname)
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self.assertTrue(os.path.exists(fname))
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self.assertTrue(os.path.exists('%s.sha1' % fname))
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# Originals don't stay forever though
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os.utime(fname, (-1, time.time() - 3600 * 25))
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image_cache_manager._remove_base_file(fname)
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self.assertFalse(os.path.exists(fname))
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self.assertFalse(os.path.exists('%s.sha1' % fname))
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finally:
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shutil.rmtree(dirname)
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def test_remove_base_file_dne(self):
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# This test is solely to execute the "does not exist" code path. We
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# don't expect the method being tested to do anything in this case.
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dirname = tempfile.mkdtemp()
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try:
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fname = os.path.join(dirname, 'aaa')
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image_cache_manager = imagecache.ImageCacheManager()
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image_cache_manager._remove_base_file(fname)
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finally:
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shutil.rmtree(dirname)
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def test_remove_base_file_oserror(self):
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dirname = tempfile.mkdtemp()
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fname = os.path.join(dirname, 'aaa')
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mylog, handler, stream = self._intercept_log_messages()
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try:
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os.mkdir(fname)
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os.utime(fname, (-1, time.time() - 3601))
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# This will raise an OSError because of file permissions
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image_cache_manager = imagecache.ImageCacheManager()
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image_cache_manager._remove_base_file(fname)
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self.assertTrue(os.path.exists(fname))
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self.assertNotEqual(stream.getvalue().find('Failed to remove'),
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-1)
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finally:
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shutil.rmtree(dirname)
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mylog.logger.removeHandler(handler)
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def test_handle_base_image_unused(self):
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img = {'container_format': 'ami',
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'id': '123',
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'uuid': '1234-4567-2378'}
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dirname, fname = self._make_base_file()
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os.utime(fname, (-1, time.time() - 3601))
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try:
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image_cache_manager = imagecache.ImageCacheManager()
|
|
image_cache_manager.unexplained_images = [fname]
|
|
image_cache_manager._handle_base_image(img, fname)
|
|
|
|
self.assertEquals(image_cache_manager.unexplained_images, [])
|
|
self.assertEquals(image_cache_manager.removable_base_files,
|
|
[fname])
|
|
self.assertEquals(image_cache_manager.corrupt_base_files, [])
|
|
|
|
finally:
|
|
shutil.rmtree(dirname)
|
|
|
|
def test_handle_base_image_used(self):
|
|
img = {'container_format': 'ami',
|
|
'id': '123',
|
|
'uuid': '1234-4567-2378'}
|
|
|
|
dirname, fname = self._make_base_file()
|
|
os.utime(fname, (-1, time.time() - 3601))
|
|
|
|
try:
|
|
image_cache_manager = imagecache.ImageCacheManager()
|
|
image_cache_manager.unexplained_images = [fname]
|
|
image_cache_manager.used_images = {'123': (1, 0, ['banana-42'])}
|
|
image_cache_manager._handle_base_image(img, fname)
|
|
|
|
self.assertEquals(image_cache_manager.unexplained_images, [])
|
|
self.assertEquals(image_cache_manager.removable_base_files, [])
|
|
self.assertEquals(image_cache_manager.corrupt_base_files, [])
|
|
|
|
finally:
|
|
shutil.rmtree(dirname)
|
|
|
|
def test_handle_base_image_used_remotely(self):
|
|
img = {'container_format': 'ami',
|
|
'id': '123',
|
|
'uuid': '1234-4567-2378'}
|
|
|
|
dirname, fname = self._make_base_file()
|
|
os.utime(fname, (-1, time.time() - 3601))
|
|
|
|
try:
|
|
image_cache_manager = imagecache.ImageCacheManager()
|
|
image_cache_manager.used_images = {'123': (0, 1, ['banana-42'])}
|
|
image_cache_manager._handle_base_image(img, None)
|
|
|
|
self.assertEquals(image_cache_manager.unexplained_images, [])
|
|
self.assertEquals(image_cache_manager.removable_base_files, [])
|
|
self.assertEquals(image_cache_manager.corrupt_base_files, [])
|
|
|
|
finally:
|
|
shutil.rmtree(dirname)
|
|
|
|
def test_handle_base_image_absent(self):
|
|
"""Ensure we warn for use of a missing base image."""
|
|
|
|
img = {'container_format': 'ami',
|
|
'id': '123',
|
|
'uuid': '1234-4567-2378'}
|
|
|
|
mylog, handler, stream = self._intercept_log_messages()
|
|
|
|
try:
|
|
image_cache_manager = imagecache.ImageCacheManager()
|
|
image_cache_manager.used_images = {'123': (1, 0, ['banana-42'])}
|
|
image_cache_manager._handle_base_image(img, None)
|
|
|
|
self.assertEquals(image_cache_manager.unexplained_images, [])
|
|
self.assertEquals(image_cache_manager.removable_base_files, [])
|
|
self.assertEquals(image_cache_manager.corrupt_base_files, [])
|
|
self.assertNotEqual(stream.getvalue().find('an absent base file'),
|
|
-1)
|
|
|
|
finally:
|
|
mylog.logger.removeHandler(handler)
|
|
|
|
def test_handle_base_image_used_missing(self):
|
|
img = {'container_format': 'ami',
|
|
'id': '123',
|
|
'uuid': '1234-4567-2378'}
|
|
|
|
dirname = tempfile.mkdtemp()
|
|
fname = os.path.join(dirname, 'aaa')
|
|
|
|
try:
|
|
image_cache_manager = imagecache.ImageCacheManager()
|
|
image_cache_manager.unexplained_images = [fname]
|
|
image_cache_manager.used_images = {'123': (1, 0, ['banana-42'])}
|
|
image_cache_manager._handle_base_image(img, fname)
|
|
|
|
self.assertEquals(image_cache_manager.unexplained_images, [])
|
|
self.assertEquals(image_cache_manager.removable_base_files, [])
|
|
self.assertEquals(image_cache_manager.corrupt_base_files, [])
|
|
|
|
finally:
|
|
shutil.rmtree(dirname)
|
|
|
|
def test_handle_base_image_checksum_fails(self):
|
|
img = {'container_format': 'ami',
|
|
'id': '123',
|
|
'uuid': '1234-4567-2378'}
|
|
|
|
dirname, fname = self._make_base_file()
|
|
|
|
try:
|
|
f = open(fname, 'w')
|
|
f.write('banana')
|
|
f.close()
|
|
|
|
image_cache_manager = imagecache.ImageCacheManager()
|
|
image_cache_manager.unexplained_images = [fname]
|
|
image_cache_manager.used_images = {'123': (1, 0, ['banana-42'])}
|
|
image_cache_manager._handle_base_image(img, fname)
|
|
|
|
self.assertEquals(image_cache_manager.unexplained_images, [])
|
|
self.assertEquals(image_cache_manager.removable_base_files, [])
|
|
self.assertEquals(image_cache_manager.corrupt_base_files,
|
|
[fname])
|
|
|
|
finally:
|
|
shutil.rmtree(dirname)
|
|
|
|
def test_verify_base_images(self):
|
|
self.flags(instances_path='/instance_path')
|
|
self.flags(remove_unused_base_images=True)
|
|
|
|
base_file_list = ['00000001',
|
|
'ephemeral_0_20_None',
|
|
'e97222e91fc4241f49a7f520d1dcf446751129b3_sm',
|
|
'e09c675c2d1cfac32dae3c2d83689c8c94bc693b_sm',
|
|
'92cfceb39d57d914ed8b14d0e37643de0797ae56',
|
|
'17d1b00b81642842e514494a78e804e9a511637c',
|
|
('17d1b00b81642842e514494a78e804e9a511637c_'
|
|
'5368709120'),
|
|
('17d1b00b81642842e514494a78e804e9a511637c_'
|
|
'10737418240'),
|
|
'00000004']
|
|
|
|
def fq_path(path):
|
|
return os.path.join('/instance_path/_base/', path)
|
|
|
|
# Fake base directory existance
|
|
orig_exists = os.path.exists
|
|
|
|
def exists(path):
|
|
# The python coverage tool got angry with my overly broad mocks
|
|
if not path.startswith('/instance_path'):
|
|
return orig_exists(path)
|
|
|
|
if path in ['/instance_path',
|
|
'/instance_path/_base',
|
|
'/instance_path/instance-1/disk',
|
|
'/instance_path/instance-2/disk',
|
|
'/instance_path/instance-3/disk',
|
|
('/instance_path/_base/'
|
|
'92cfceb39d57d914ed8b14d0e37643de0797ae56.sha1')]:
|
|
return True
|
|
|
|
for p in base_file_list:
|
|
if path == fq_path(p):
|
|
return True
|
|
if path == fq_path(p) + '.sha1':
|
|
return False
|
|
|
|
if path in [('/instance_path/_base/'
|
|
'92cfceb39d57d914ed8b14d0e37643de0797ae56_sm')]:
|
|
return False
|
|
|
|
self.fail('Unexpected path existance check: %s' % path)
|
|
|
|
self.stubs.Set(os.path, 'exists', lambda x: exists(x))
|
|
|
|
# Fake up some instances in the instances directory
|
|
orig_listdir = os.listdir
|
|
|
|
def listdir(path):
|
|
# The python coverage tool got angry with my overly broad mocks
|
|
if not path.startswith('/instance_path'):
|
|
return orig_list(path)
|
|
|
|
if path == '/instance_path':
|
|
return ['instance-1', 'instance-2', 'instance-3', '_base']
|
|
|
|
if path == '/instance_path/_base':
|
|
return base_file_list
|
|
|
|
self.fail('Unexpected directory listed: %s' % path)
|
|
|
|
self.stubs.Set(os, 'listdir', lambda x: listdir(x))
|
|
|
|
# Fake isfile for these faked images in _base
|
|
orig_isfile = os.path.isfile
|
|
|
|
def isfile(path):
|
|
# The python coverage tool got angry with my overly broad mocks
|
|
if not path.startswith('/instance_path'):
|
|
return orig_isfile(path)
|
|
|
|
for p in base_file_list:
|
|
if path == fq_path(p):
|
|
return True
|
|
|
|
self.fail('Unexpected isfile call: %s' % path)
|
|
|
|
self.stubs.Set(os.path, 'isfile', lambda x: isfile(x))
|
|
|
|
# Fake the database call which lists running instances
|
|
self.stubs.Set(db, 'instance_get_all',
|
|
lambda x: [{'image_ref': 'image-1',
|
|
'host': FLAGS.host,
|
|
'name': 'instance-1',
|
|
'uuid': '123'},
|
|
{'image_ref': 'image-2',
|
|
'host': FLAGS.host,
|
|
'name': 'instance-2',
|
|
'uuid': '456'}])
|
|
|
|
image_cache_manager = imagecache.ImageCacheManager()
|
|
|
|
# Fake the image service call which lists all registered images
|
|
class FakeImageService(object):
|
|
def detail(self, _context):
|
|
return [{'container_format': 'ami', 'id': '42'},
|
|
{'container_format': 'amk', 'id': '43'}]
|
|
|
|
self.stubs.Set(image, 'get_default_image_service',
|
|
lambda: FakeImageService())
|
|
|
|
# Fake the utils call which finds the backing image
|
|
def get_disk_backing_file(path):
|
|
if path in ['/instance_path/instance-1/disk',
|
|
'/instance_path/instance-2/disk']:
|
|
return fq_path('17d1b00b81642842e514494a78e804e9a511637c_'
|
|
'5368709120')
|
|
self.fail('Unexpected backing file lookup: %s' % path)
|
|
|
|
self.stubs.Set(virtutils, 'get_disk_backing_file',
|
|
lambda x: get_disk_backing_file(x))
|
|
|
|
# Fake out verifying checksums, as that is tested elsewhere
|
|
self.stubs.Set(image_cache_manager, '_verify_checksum',
|
|
lambda x, y:
|
|
y == '92cfceb39d57d914ed8b14d0e37643de0797ae56')
|
|
|
|
# Fake getmtime as well
|
|
orig_getmtime = os.path.getmtime
|
|
|
|
def getmtime(path):
|
|
if not path.startswith('/instance_path'):
|
|
return orig_getmtime(path)
|
|
|
|
return 1000000
|
|
|
|
self.stubs.Set(os.path, 'getmtime', lambda x: getmtime(x))
|
|
|
|
# Make sure we don't accidentally remove a real file
|
|
orig_remove = os.remove
|
|
|
|
def remove(path):
|
|
if not path.startswith('/instance_path'):
|
|
return orig_remove(path)
|
|
|
|
# Don't try to remove fake files
|
|
return
|
|
|
|
self.stubs.Set(os, 'remove', lambda x: remove(x))
|
|
|
|
# And finally we can make the call we're actually testing...
|
|
# The argument here should be a context, but it is mocked out
|
|
image_cache_manager.verify_base_images(None)
|
|
|
|
# Verify
|
|
active = [fq_path('17d1b00b81642842e514494a78e804e9a511637c_'
|
|
'5368709120')]
|
|
self.assertEquals(image_cache_manager.active_base_files, active)
|
|
|
|
for rem in [fq_path('e97222e91fc4241f49a7f520d1dcf446751129b3_sm'),
|
|
fq_path('e09c675c2d1cfac32dae3c2d83689c8c94bc693b_sm'),
|
|
fq_path('92cfceb39d57d914ed8b14d0e37643de0797ae56'),
|
|
fq_path('17d1b00b81642842e514494a78e804e9a511637c'),
|
|
fq_path('17d1b00b81642842e514494a78e804e9a511637c_'
|
|
'10737418240')]:
|
|
self.assertTrue(rem in image_cache_manager.removable_base_files)
|
|
|
|
def test_verify_base_images_no_base(self):
|
|
self.flags(instances_path='/tmp/no/such/dir/name/please')
|
|
image_cache_manager = imagecache.ImageCacheManager()
|
|
image_cache_manager.verify_base_images(None)
|