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# This file is part of cloud-init. See LICENSE file for license information.
from cloudinit.cmd import clean
from cloudinit.util import ensure_dir, sym_link, write_file
from cloudinit.tests.helpers import CiTestCase, wrap_and_call, mock
from collections import namedtuple
import os
from io import StringIO
mypaths = namedtuple('MyPaths', 'cloud_dir')
class TestClean(CiTestCase):
def setUp(self):
super(TestClean, self).setUp()
self.new_root = self.tmp_dir()
self.artifact_dir = self.tmp_path('artifacts', self.new_root)
self.log1 = self.tmp_path('cloud-init.log', self.new_root)
self.log2 = self.tmp_path('cloud-init-output.log', self.new_root)
class FakeInit(object):
cfg = {'def_log_file': self.log1,
'output': {'all': '|tee -a {0}'.format(self.log2)}}
# Ensure cloud_dir has a trailing slash, to match real behaviour
paths = mypaths(cloud_dir='{}/'.format(self.artifact_dir))
def __init__(self, ds_deps):
pass
def read_cfg(self):
pass
self.init_class = FakeInit
def test_remove_artifacts_removes_logs(self):
"""remove_artifacts removes logs when remove_logs is True."""
write_file(self.log1, 'cloud-init-log')
write_file(self.log2, 'cloud-init-output-log')
self.assertFalse(
os.path.exists(self.artifact_dir), 'Unexpected artifacts dir')
retcode = wrap_and_call(
'cloudinit.cmd.clean',
{'Init': {'side_effect': self.init_class}},
clean.remove_artifacts, remove_logs=True)
self.assertFalse(os.path.exists(self.log1), 'Unexpected file')
self.assertFalse(os.path.exists(self.log2), 'Unexpected file')
self.assertEqual(0, retcode)
def test_remove_artifacts_preserves_logs(self):
"""remove_artifacts leaves logs when remove_logs is False."""
write_file(self.log1, 'cloud-init-log')
write_file(self.log2, 'cloud-init-output-log')
retcode = wrap_and_call(
'cloudinit.cmd.clean',
{'Init': {'side_effect': self.init_class}},
clean.remove_artifacts, remove_logs=False)
self.assertTrue(os.path.exists(self.log1), 'Missing expected file')
self.assertTrue(os.path.exists(self.log2), 'Missing expected file')
self.assertEqual(0, retcode)
def test_remove_artifacts_removes_unlinks_symlinks(self):
"""remove_artifacts cleans artifacts dir unlinking any symlinks."""
dir1 = os.path.join(self.artifact_dir, 'dir1')
ensure_dir(dir1)
symlink = os.path.join(self.artifact_dir, 'mylink')
sym_link(dir1, symlink)
retcode = wrap_and_call(
'cloudinit.cmd.clean',
{'Init': {'side_effect': self.init_class}},
clean.remove_artifacts, remove_logs=False)
self.assertEqual(0, retcode)
for path in (dir1, symlink):
self.assertFalse(
os.path.exists(path),
'Unexpected {0} dir'.format(path))
def test_remove_artifacts_removes_artifacts_skipping_seed(self):
"""remove_artifacts cleans artifacts dir with exception of seed dir."""
dirs = [
self.artifact_dir,
os.path.join(self.artifact_dir, 'seed'),
os.path.join(self.artifact_dir, 'dir1'),
os.path.join(self.artifact_dir, 'dir2')]
for _dir in dirs:
ensure_dir(_dir)
retcode = wrap_and_call(
'cloudinit.cmd.clean',
{'Init': {'side_effect': self.init_class}},
clean.remove_artifacts, remove_logs=False)
self.assertEqual(0, retcode)
for expected_dir in dirs[:2]:
self.assertTrue(
os.path.exists(expected_dir),
'Missing {0} dir'.format(expected_dir))
for deleted_dir in dirs[2:]:
self.assertFalse(
os.path.exists(deleted_dir),
'Unexpected {0} dir'.format(deleted_dir))
def test_remove_artifacts_removes_artifacts_removes_seed(self):
"""remove_artifacts removes seed dir when remove_seed is True."""
dirs = [
self.artifact_dir,
os.path.join(self.artifact_dir, 'seed'),
os.path.join(self.artifact_dir, 'dir1'),
os.path.join(self.artifact_dir, 'dir2')]
for _dir in dirs:
ensure_dir(_dir)
retcode = wrap_and_call(
'cloudinit.cmd.clean',
{'Init': {'side_effect': self.init_class}},
clean.remove_artifacts, remove_logs=False, remove_seed=True)
self.assertEqual(0, retcode)
self.assertTrue(
os.path.exists(self.artifact_dir), 'Missing artifact dir')
for deleted_dir in dirs[1:]:
self.assertFalse(
os.path.exists(deleted_dir),
'Unexpected {0} dir'.format(deleted_dir))
def test_remove_artifacts_returns_one_on_errors(self):
"""remove_artifacts returns non-zero on failure and prints an error."""
ensure_dir(self.artifact_dir)
ensure_dir(os.path.join(self.artifact_dir, 'dir1'))
with mock.patch('sys.stderr', new_callable=StringIO) as m_stderr:
retcode = wrap_and_call(
'cloudinit.cmd.clean',
{'del_dir': {'side_effect': OSError('oops')},
'Init': {'side_effect': self.init_class}},
clean.remove_artifacts, remove_logs=False)
self.assertEqual(1, retcode)
self.assertEqual(
'ERROR: Could not remove %s/dir1: oops\n' % self.artifact_dir,
m_stderr.getvalue())
def test_handle_clean_args_reboots(self):
"""handle_clean_args_reboots when reboot arg is provided."""
called_cmds = []
def fake_subp(cmd, capture):
called_cmds.append((cmd, capture))
return '', ''
myargs = namedtuple('MyArgs', 'remove_logs remove_seed reboot')
cmdargs = myargs(remove_logs=False, remove_seed=False, reboot=True)
retcode = wrap_and_call(
'cloudinit.cmd.clean',
{'subp': {'side_effect': fake_subp},
'Init': {'side_effect': self.init_class}},
clean.handle_clean_args, name='does not matter', args=cmdargs)
self.assertEqual(0, retcode)
self.assertEqual(
[(['shutdown', '-r', 'now'], False)], called_cmds)
def test_status_main(self):
'''clean.main can be run as a standalone script.'''
write_file(self.log1, 'cloud-init-log')
with self.assertRaises(SystemExit) as context_manager:
wrap_and_call(
'cloudinit.cmd.clean',
{'Init': {'side_effect': self.init_class},
'sys.exit': {'side_effect': self.sys_exit},
'sys.argv': {'new': ['clean', '--logs']}},
clean.main)
self.assertEqual(0, context_manager.exception.code)
self.assertFalse(
os.path.exists(self.log1), 'Unexpected log {0}'.format(self.log1))
# vi: ts=4 expandtab syntax=python
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