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from argparse import Namespace
from contextlib import contextmanager
from mock import (
Mock,
patch,
)
from assess_log_rotation import (
check_expected_backup,
check_for_extra_backup,
check_log0,
LogRotateError,
make_client_from_args,
parse_args,
assess_debug_log,
assess_machine_rotation,
)
from jujupy import (
EnvJujuClient,
JujuData,
_temp_env as temp_env,
yaml_loads,
)
from tests import TestCase
from tests.test_jujupy import (
fake_juju_client,
fake_juju_client_optional_jes,
)
good_yaml = \
"""
results:
result-map:
log0:
name: /var/log/juju/unit-fill-logs-0.log
size: "25"
log1:
name: /var/log/juju/unit-fill-logs-0-2015-05-21T09-57-03.123.log
size: "299"
log1:
name: /var/log/juju/unit-fill-logs-0-2015-05-22T12-57-03.123.log
size: "300"
status: completed
timing:
completed: 2015-05-21 09:57:03 -0400 EDT
enqueued: 2015-05-21 09:56:59 -0400 EDT
started: 2015-05-21 09:57:02 -0400 EDT
"""
good_obj = yaml_loads(good_yaml)
big_yaml = \
"""
results:
result-map:
log0:
name: /var/log/juju/unit-fill-logs-0.log
size: "400"
log1:
name: /var/log/juju/unit-fill-logs-0-2015-05-21T09-57-03.123.log
size: "400"
log2:
name: /var/log/juju/unit-fill-logs-0-not-a-valid-timestamp.log
size: "299"
log3:
name: something-just-plain-bad.log
size: "299"
status: completed
timing:
completed: 2015-05-21 09:57:03 -0400 EDT
enqueued: 2015-05-21 09:56:59 -0400 EDT
started: 2015-05-21 09:57:02 -0400 EDT
"""
big_obj = yaml_loads(big_yaml)
no_files_yaml = \
"""
results:
result-map:
status: completed
timing:
completed: 2015-05-21 09:57:03 -0400 EDT
enqueued: 2015-05-21 09:56:59 -0400 EDT
started: 2015-05-21 09:57:02 -0400 EDT
"""
no_files_obj = yaml_loads(no_files_yaml)
class TestCheckForExtraBackup(TestCase):
def test_not_found(self):
try:
# log2 should not be found, and thus no exception.
check_for_extra_backup("log2", good_obj)
except Exception as e:
self.fail("unexpected exception: %s" % e.msg)
def test_find_extra(self):
with self.assertRaises(LogRotateError):
# log1 should be found, and thus cause an exception.
check_for_extra_backup("log1", good_obj)
class TestCheckBackup(TestCase):
def test_exists(self):
try:
# log1 should be found, and thus no exception.
check_expected_backup("log1", "unit-fill-logs-0", good_obj)
except Exception as e:
self.fail("unexpected exception: %s" % e.msg)
def test_not_found(self):
with self.assertRaises(LogRotateError):
# log2 should not be found, and thus cause an exception.
check_expected_backup("log2", "unit-fill-logs-0", good_obj)
def test_too_big(self):
with self.assertRaises(LogRotateError):
# log1 is too big, and thus should cause an exception.
check_expected_backup("log1", "unit-fill-logs-0", big_obj)
def test_bad_timestamp(self):
with self.assertRaises(LogRotateError):
# log2 has an invalid timestamp, and thus should cause an
# exception.
check_expected_backup("log2", "unit-fill-logs-0", big_obj)
def test_bad_name(self):
with self.assertRaises(LogRotateError):
# log3 has a completely invalid name, and thus should cause an
# exception.
check_expected_backup("log3", "unit-fill-logs-0", big_obj)
class TestCheckLog0(TestCase):
def test_exists(self):
try:
# log0 should be found, and thus no exception.
check_log0("/var/log/juju/unit-fill-logs-0.log", good_obj)
except Exception as e:
self.fail("unexpected exception: %s" % e.msg)
def test_not_found(self):
with self.assertRaises(AttributeError):
# There's no value under result-map, which causes the yaml parser
# to consider it None, and thus it'll cause an AttributeError
check_log0("/var/log/juju/unit-fill-logs-0.log", no_files_obj)
def test_too_big(self):
with self.assertRaises(LogRotateError):
# log0 is too big, and thus should cause an exception.
check_log0(
"/var/log/juju/unit-fill-logs-0.log", big_obj)
class TestTestDebugLog(TestCase):
def test_happy_log(self):
client = Mock()
client.get_juju_output.return_value = '\n'*100
# Ensure that no exception is raised
assess_debug_log(client, timeout=120)
client.get_juju_output.assert_called_once_with(
"debug-log", "--lines=100", "--limit=100", timeout=120)
def test_unhappy_log(self):
client = Mock()
client.get_juju_output.return_value = ''
# Ensure that no exception is raised
with self.assertRaises(LogRotateError):
assess_debug_log(client)
client.get_juju_output.assert_called_once_with(
"debug-log", "--lines=100", "--limit=100", timeout=180)
class TestMachineRoation(TestCase):
def test_respects_machine_id_0(self):
client = fake_juju_client()
client.bootstrap()
client.deploy('fill-logs')
with patch('assess_log_rotation.test_rotation') as tr_mock:
assess_machine_rotation(client)
tr_mock.assert_called_once_with(
client, '/var/log/juju/machine-0.log', 'machine-0', 'fill-machine',
'machine-size', 'megs=300', 'machine=0')
def test_respects_machine_id_1(self):
client = fake_juju_client_optional_jes(jes_enabled=False)
client.bootstrap()
client.deploy('fill-logs')
with patch('assess_log_rotation.test_rotation') as tr_mock:
assess_machine_rotation(client)
tr_mock.assert_called_once_with(
client, '/var/log/juju/machine-1.log', 'machine-1',
'fill-machine', 'machine-size', 'megs=300', 'machine=1')
class TestParseArgs(TestCase):
def test_parse_args(self):
args = parse_args(['b', 'c/juju', 'd', 'e', 'machine'])
self.assertEqual(args, Namespace(
agent='machine', env='b', juju_bin='c/juju', logs='d',
temp_env_name='e', debug=False, agent_stream=None, agent_url=None,
bootstrap_host=None, machine=[], keep_env=False,
region=None, series=None, upload_tools=False, verbose=20))
def test_parse_args_unit(self):
args = parse_args(['b', 'c/juju', 'd', 'e', 'unit'])
self.assertEqual('unit', args.agent)
class TestMakeClientFromArgs(TestCase):
@contextmanager
def make_client_cxt(self):
with temp_env({'environments': {'foo': {}}}):
with patch('subprocess.check_output', return_value=''):
with patch('jujupy.EnvJujuClient.get_jes_command',
autospec=True, return_value='controller'):
with patch('jujupy.EnvJujuClient.juju',
autospec=True, return_value=''):
with patch('assess_log_rotation.tear_down',
autospec=True, return_value='') as td_func:
with patch.object(JujuData, 'load_yaml'):
yield td_func
def test_defaults(self):
with self.make_client_cxt() as td_func:
client = make_client_from_args(Namespace(
juju_bin='', debug=False, env='foo', temp_env_name='bar',
agent_url=None, agent_stream=None, series=None, region=None,
bootstrap_host=None, machine=[]
))
self.assertIsInstance(client, EnvJujuClient)
self.assertIn('/jes-homes/bar', client.env.juju_home)
td_func.assert_called_once_with(client, True)
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