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from contextlib import contextmanager
import logging
from mock import (
call,
patch,
Mock,
sentinel,
)
from assess_recovery import (
assess_recovery,
delete_controller_members,
main,
parse_args,
)
from jujupy import (
Machine,
)
from tests import (
FakeHomeTestCase,
TestCase,
)
from tests.test_jujupy import fake_juju_client
class TestParseArgs(TestCase):
def test_parse_args(self):
args = parse_args(['an-env', '/juju', 'log', 'tmp-env'])
self.assertEqual(args.env, 'an-env')
self.assertEqual(args.juju_bin, '/juju')
self.assertEqual(args.logs, 'log')
self.assertEqual(args.temp_env_name, 'tmp-env')
self.assertEqual(args.charm_series, '')
self.assertEqual(args.strategy, 'backup')
self.assertEqual(args.verbose, logging.INFO)
self.assertEqual(args.debug, False)
self.assertIs(args.agent_stream, None)
self.assertIs(args.series, None)
def test_parse_args_ha(self):
args = parse_args(['an-env', '/juju', 'log', 'tmp-env', '--ha'])
self.assertEqual(args.strategy, 'ha')
def test_parse_args_ha_backup(self):
args = parse_args(['an-env', '/juju', 'log', 'tmp-env', '--ha-backup'])
self.assertEqual(args.strategy, 'ha-backup')
def test_parse_args_backup(self):
args = parse_args(['an-env', '/juju', 'log', 'tmp-env', '--ha',
'--backup'])
self.assertEqual(args.strategy, 'backup')
def test_parse_args_charm_series(self):
args = parse_args(['an-env', '/juju', 'log', 'tmp-env',
'--charm-series', 'qux'])
self.assertEqual(args.charm_series, 'qux')
class TestAssessRecovery(TestCase):
@contextmanager
def assess_recovery_cxt(self, client):
client.bootstrap()
def terminate(env, instance_ids):
model = client._backend.controller_state.controller_model
for instance_id in instance_ids:
model.remove_state_server(instance_id)
with patch('assess_recovery.wait_for_state_server_to_shutdown',
autospec=True):
with patch('assess_recovery.terminate_instances',
side_effect=terminate):
with patch('deploy_stack.wait_for_port', autospec=True):
yield
def test_backup(self):
client = fake_juju_client()
bs_manager = Mock(client=client, known_hosts={})
with self.assess_recovery_cxt(client):
assess_recovery(bs_manager, 'backup', 'trusty')
def test_ha(self):
client = fake_juju_client()
bs_manager = Mock(client=client, known_hosts={})
with self.assess_recovery_cxt(client):
assess_recovery(bs_manager, 'ha', 'trusty')
def test_ha_backup(self):
client = fake_juju_client()
bs_manager = Mock(client=client, known_hosts={})
with self.assess_recovery_cxt(client):
assess_recovery(bs_manager, 'ha-backup', 'trusty')
def test_controller_model_backup(self):
client = fake_juju_client()
bs_manager = Mock(client=client, known_hosts={})
with self.assess_recovery_cxt(client):
assess_recovery(bs_manager, 'backup', 'trusty')
def test_controller_model_ha(self):
client = fake_juju_client()
bs_manager = Mock(client=client, known_hosts={})
with self.assess_recovery_cxt(client):
assess_recovery(bs_manager, 'ha', 'trusty')
def test_controller_model_ha_backup(self):
client = fake_juju_client()
bs_manager = Mock(client=client, known_hosts={})
with self.assess_recovery_cxt(client):
assess_recovery(bs_manager, 'ha-backup', 'trusty')
@patch('assess_recovery.configure_logging', autospec=True)
@patch('assess_recovery.BootstrapManager.booted_context', autospec=True)
class TestMain(FakeHomeTestCase):
def test_main(self, mock_bc, mock_cl):
client = Mock(spec=['is_jes_enabled', 'version'])
client.version = '1.25.5'
with patch('deploy_stack.client_from_config',
return_value=client) as mock_c:
with patch('assess_recovery.assess_recovery',
autospec=True) as mock_assess:
main(['an-env', '/juju', 'log_dir', 'tmp-env', '--backup',
'--charm-series', 'a-series'])
mock_cl.assert_called_once_with(logging.INFO)
mock_c.assert_called_once_with('an-env', '/juju', debug=False)
self.assertEqual(mock_bc.call_count, 1)
self.assertEqual(mock_assess.call_count, 1)
bs_manager, strategy, series = mock_assess.call_args[0]
self.assertEqual((bs_manager.client, strategy, series),
(client, 'backup', 'a-series'))
def test_error(self, mock_bc, mock_cl):
class FakeError(Exception):
"""Custom exception to validate error handling."""
error = FakeError('An error during test')
client = Mock(spec=['is_jes_enabled', 'version'])
client.version = '2.0.0'
with patch('deploy_stack.client_from_config',
return_value=client) as mock_c:
with patch('assess_recovery.parse_new_state_server_from_error',
autospec=True, return_value='a-host') as mock_pe:
with patch('assess_recovery.assess_recovery', autospec=True,
side_effect=error) as mock_assess:
with self.assertRaises(FakeError) as ctx:
main(['an-env', '/juju', 'log_dir', 'tmp-env', '--ha',
'--verbose', '--charm-series', 'a-series'])
self.assertIs(ctx.exception, error)
mock_cl.assert_called_once_with(logging.DEBUG)
mock_c.assert_called_once_with('an-env', '/juju', debug=False)
mock_pe.assert_called_once_with(error)
self.assertEqual(mock_bc.call_count, 1)
self.assertEqual(mock_assess.call_count, 1)
bs_manager, strategy, series = mock_assess.call_args[0]
self.assertEqual((bs_manager.client, strategy, series),
(client, 'ha', 'a-series'))
self.assertEqual(bs_manager.known_hosts['0'], 'a-host')
@patch('assess_recovery.wait_for_state_server_to_shutdown', autospec=True)
@patch('assess_recovery.terminate_instances', autospec=True)
class TestDeleteControllerMembers(FakeHomeTestCase):
def test_delete_controller_members(self, ti_mock, wsss_mock):
client = Mock(spec=['env', 'get_controller_members'])
client.env = sentinel.env
client.env.config = {'type': 'lxd'}
client.get_controller_members.return_value = [
Machine('3', {
'dns-name': '10.0.0.3',
'instance-id': 'juju-dddd-machine-3',
'controller-member-status': 'has-vote'}),
Machine('0', {
'dns-name': '10.0.0.0',
'instance-id': 'juju-aaaa-machine-0',
'controller-member-status': 'has-vote'}),
Machine('2', {
'dns-name': '10.0.0.2',
'instance-id': 'juju-cccc-machine-2',
'controller-member-status': 'has-vote'}),
]
deleted = delete_controller_members(client)
self.assertEqual(['2', '0', '3'], deleted)
client.get_controller_members.assert_called_once_with()
# terminate_instance was call in the reverse order of members.
self.assertEqual(
[call(client.env, ['juju-cccc-machine-2']),
call(client.env, ['juju-aaaa-machine-0']),
call(client.env, ['juju-dddd-machine-3'])],
ti_mock.mock_calls)
self.assertEqual(
[call('10.0.0.2', client, 'juju-cccc-machine-2', timeout=120),
call('10.0.0.0', client, 'juju-aaaa-machine-0', timeout=120),
call('10.0.0.3', client, 'juju-dddd-machine-3', timeout=120)],
wsss_mock.mock_calls)
self.assertEqual(
self.log_stream.getvalue(),
'INFO Instrumenting node failure for member 2:'
' juju-cccc-machine-2 at 10.0.0.2\n'
'INFO Instrumenting node failure for member 0:'
' juju-aaaa-machine-0 at 10.0.0.0\n'
'INFO Instrumenting node failure for member 3:'
' juju-dddd-machine-3 at 10.0.0.3\n')
def test_delete_controller_members_leader_only(self, ti_mock, wsss_mock):
client = Mock(spec=['env', 'get_controller_leader'])
client.env = sentinel.env
client.env.config = {'type': 'lxd'}
client.get_controller_leader.return_value = Machine('3', {
'dns-name': '10.0.0.3',
'instance-id': 'juju-dddd-machine-3',
'controller-member-status': 'has-vote'})
deleted = delete_controller_members(client, leader_only=True)
self.assertEqual(['3'], deleted)
client.get_controller_leader.assert_called_once_with()
ti_mock.assert_called_once_with(client.env, ['juju-dddd-machine-3'])
wsss_mock.assert_called_once_with(
'10.0.0.3', client, 'juju-dddd-machine-3', timeout=120)
self.assertEqual(
self.log_stream.getvalue(),
'INFO Instrumenting node failure for member 3:'
' juju-dddd-machine-3 at 10.0.0.3\n')
def test_delete_controller_members_azure(self, ti_mock, wsss_mock):
client = Mock(spec=['env', 'get_controller_leader'])
client.env = sentinel.env
client.env.config = {'type': 'azure'}
client.get_controller_leader.return_value = Machine('3', {
'dns-name': '10.0.0.3',
'instance-id': 'juju-dddd-machine-3',
'controller-member-status': 'has-vote'})
with patch('assess_recovery.convert_to_azure_ids', autospec=True,
return_value=['juju-azure-id']):
deleted = delete_controller_members(client, leader_only=True)
self.assertEqual(['3'], deleted)
client.get_controller_leader.assert_called_once_with()
ti_mock.assert_called_once_with(client.env, ['juju-azure-id'])
wsss_mock.assert_called_once_with(
'10.0.0.3', client, 'juju-azure-id', timeout=120)
self.assertEqual(
self.log_stream.getvalue(),
'INFO Instrumenting node failure for member 3:'
' juju-azure-id at 10.0.0.3\n')
|