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# Copyright 2014 Microsoft Corporation
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# Requires Python 2.4+ and Openssl 1.0+
#
import glob
import tempfile
import os
from mock import patch
from azurelinuxagent.common.utils import fileutil
from azurelinuxagent.ga.env import MAXIMUM_CACHED_FILES, EnvHandler
from tests.tools import AgentTestCase
class TestEnv(AgentTestCase):
@patch("azurelinuxagent.common.conf.get_lib_dir")
def test_purge_disk_cache(self, mock_conf, *args):
names = [
("Prod", "agentsManifest"),
("Test", "agentsManifest"),
("FauxExtension1", "manifest.xml"),
("FauxExtension2", "manifest.xml"),
("GoalState", "xml"),
("ExtensionsConfig", "xml")
]
env = EnvHandler()
tmp_dir = tempfile.mkdtemp()
mock_conf.return_value = tmp_dir
# write incarnations 1-100
for t in names:
self._create_files(tmp_dir,
t[0],
t[1],
2 * MAXIMUM_CACHED_FILES,
with_sleep=0.001)
# update incarnation 1 with the latest timestamp
for t in names:
f = os.path.join(tmp_dir, '.'.join((t[0], '1', t[1])))
fileutil.write_file(f, "faux content")
# ensure the expected number of files are created
for t in names:
p = os.path.join(tmp_dir, '{0}.*.{1}'.format(*t))
self.assertEqual(2 * MAXIMUM_CACHED_FILES, len(glob.glob(p)))
env.purge_disk_cache()
# ensure the expected number of files remain
for t in names:
p = os.path.join(tmp_dir, '{0}.*.{1}'.format(*t))
incarnation1 = os.path.join(tmp_dir, '{0}.1.{1}'.format(t[0], t[1]))
incarnation2 = os.path.join(tmp_dir, '{0}.2.{1}'.format(t[0], t[1]))
self.assertEqual(MAXIMUM_CACHED_FILES, len(glob.glob(p)))
self.assertTrue(os.path.exists(incarnation1))
self.assertFalse(os.path.exists(incarnation2))
# write incarnation 101
for t in names:
f = os.path.join(tmp_dir, '.'.join((t[0], '101', t[1])))
fileutil.write_file(f, "faux content")
# call to purge should be ignored, since interval has not elapsed
env.purge_disk_cache()
for t in names:
p = os.path.join(tmp_dir, '{0}.*.{1}'.format(*t))
incarnation1 = os.path.join(tmp_dir, '{0}.1.{1}'.format(t[0], t[1]))
self.assertEqual(MAXIMUM_CACHED_FILES + 1, len(glob.glob(p)))
self.assertTrue(os.path.exists(incarnation1))
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