def test_execute_convergence_plan_recreate(self):
service = self.create_service('db',
environment={'FOO': '1'},
volumes=[VolumeSpec.parse('/etc')],
entrypoint=['top'],
command=['-d', '1'])
old_container = service.create_container()
self.assertEqual(old_container.get('Config.Entrypoint'), ['top'])
self.assertEqual(old_container.get('Config.Cmd'), ['-d', '1'])
self.assertIn('FOO=1', old_container.get('Config.Env'))
self.assertEqual(old_container.name, 'composetest_db_1')
service.start_container(old_container)
old_container.inspect() # reload volume data
volume_path = old_container.get_mount('/etc')['Source']
num_containers_before = len(self.client.containers(all=True))
service.options['environment']['FOO'] = '2'
new_container, = service.execute_convergence_plan(
ConvergencePlan('recreate', [old_container]))
self.assertEqual(new_container.get('Config.Entrypoint'), ['top'])
self.assertEqual(new_container.get('Config.Cmd'), ['-d', '1'])
self.assertIn('FOO=2', new_container.get('Config.Env'))
self.assertEqual(new_container.name, 'composetest_db_1')
self.assertEqual(
new_container.get_mount('/etc')['Source'], volume_path)
self.assertIn('affinity:container==%s' % old_container.id,
new_container.get('Config.Env'))
self.assertEqual(len(self.client.containers(all=True)),
num_containers_before)
self.assertNotEqual(old_container.id, new_container.id)
self.assertRaises(APIError, self.client.inspect_container,
old_container.id)
def test_execute_convergence_plan_when_image_volume_masks_config(self):
service = self.create_service(
'db',
build={'context': 'tests/fixtures/dockerfile-with-volume'},
)
old_container = create_and_start_container(service)
self.assertEqual(
[mount['Destination'] for mount in old_container.get('Mounts')],
['/data'])
volume_path = old_container.get_mount('/data')['Source']
service.options['volumes'] = [VolumeSpec.parse('/tmp:/data')]
with mock.patch('compose.service.log') as mock_log:
new_container, = service.execute_convergence_plan(
ConvergencePlan('recreate', [old_container]))
mock_log.warn.assert_called_once_with(mock.ANY)
_, args, kwargs = mock_log.warn.mock_calls[0]
self.assertIn(
"Service \"db\" is using volume \"/data\" from the previous container",
args[0])
self.assertEqual(
[mount['Destination'] for mount in new_container.get('Mounts')],
['/data'])
self.assertEqual(
new_container.get_mount('/data')['Source'], volume_path)
def test_execute_convergence_plan_without_start(self):
service = self.create_service(
'db',
build={'context': 'tests/fixtures/dockerfile-with-volume'}
)
containers = service.execute_convergence_plan(ConvergencePlan('create', []), start=False)
self.assertEqual(len(service.containers()), 0)
self.assertEqual(len(service.containers(stopped=True)), 1)
containers = service.execute_convergence_plan(ConvergencePlan('recreate', containers), start=False)
self.assertEqual(len(service.containers()), 0)
self.assertEqual(len(service.containers(stopped=True)), 1)
service.execute_convergence_plan(ConvergencePlan('start', containers), start=False)
self.assertEqual(len(service.containers()), 0)
self.assertEqual(len(service.containers(stopped=True)), 1)
def test_execute_convergence_plan_with_image_declared_volume(self):
service = Service(
project='composetest',
name='db',
client=self.client,
build='tests/fixtures/dockerfile-with-volume',
)
old_container = create_and_start_container(service)
self.assertEqual(list(old_container.get('Volumes').keys()), ['/data'])
volume_path = old_container.get('Volumes')['/data']
new_container, = service.execute_convergence_plan(
ConvergencePlan('recreate', [old_container]))
self.assertEqual(list(new_container.get('Volumes')), ['/data'])
self.assertEqual(new_container.get('Volumes')['/data'], volume_path)
def test_execute_convergence_plan_when_containers_are_stopped(self):
service = self.create_service('db',
environment={'FOO': '1'},
volumes=[VolumeSpec.parse('/var/db')],
entrypoint=['top'],
command=['-d', '1'])
service.create_container()
containers = service.containers(stopped=True)
self.assertEqual(len(containers), 1)
container, = containers
self.assertFalse(container.is_running)
service.execute_convergence_plan(ConvergencePlan('start', [container]))
containers = service.containers()
self.assertEqual(len(containers), 1)
container.inspect()
self.assertEqual(container, containers[0])
self.assertTrue(container.is_running)
def test_execute_convergence_plan_when_host_volume_is_removed(self):
host_path = '/tmp/host-path'
service = self.create_service(
'db',
build={'context': 'tests/fixtures/dockerfile-with-volume'},
volumes=[VolumeSpec(host_path, '/data', 'rw')])
old_container = create_and_start_container(service)
assert ([
mount['Destination'] for mount in old_container.get('Mounts')
] == ['/data'])
service.options['volumes'] = []
with mock.patch('compose.service.log', autospec=True) as mock_log:
new_container, = service.execute_convergence_plan(
ConvergencePlan('recreate', [old_container]))
assert not mock_log.warn.called
assert ([
mount['Destination'] for mount in new_container.get('Mounts')
], ['/data'])
assert new_container.get_mount('/data')['Source'] != host_path
def test_execute_convergence_plan_with_image_declared_volume(self):
service = Service(
project='composetest',
name='db',
client=self.client,
build={'context': 'tests/fixtures/dockerfile-with-volume'},
)
old_container = create_and_start_container(service)
self.assertEqual(
[mount['Destination'] for mount in old_container.get('Mounts')],
['/data'])
volume_path = old_container.get_mount('/data')['Source']
new_container, = service.execute_convergence_plan(
ConvergencePlan('recreate', [old_container]))
self.assertEqual(
[mount['Destination'] for mount in new_container.get('Mounts')],
['/data'])
self.assertEqual(
new_container.get_mount('/data')['Source'], volume_path)
def test_execute_convergence_plan_recreate_twice(self):
service = self.create_service('db',
volumes=[VolumeSpec.parse('/etc')],
entrypoint=['top'],
command=['-d', '1'])
orig_container = service.create_container()
service.start_container(orig_container)
orig_container.inspect() # reload volume data
volume_path = orig_container.get_mount('/etc')['Source']
# Do this twice to reproduce the bug
for _ in range(2):
new_container, = service.execute_convergence_plan(
ConvergencePlan('recreate', [orig_container]))
assert new_container.get_mount('/etc')['Source'] == volume_path
assert ('affinity:container==%s' % orig_container.id
in new_container.get('Config.Env'))
orig_container = new_container
