def _RunDaemonIteration(args, host=None):
"""Run one iteration of daemon task.
Args:
args: a parsed argparse.Namespace object.
host: an instance of host_util.Host.
"""
if not args.no_check_update:
try:
new_path = cli_util.CheckAndUpdateTool(
args.cli_path,
cli_update_url=args.cli_update_url)
if new_path:
logger.debug('CLI is updated.')
os.execv(new_path, [new_path] + sys.argv[1:])
except Exception as e: logger.warning('Failed to check/update tool: %s', e)
host = host or host_util.CreateHost(args)
if host.config.enable_autoupdate:
logger.debug('Auto-update enabled.')
_UpdateMttNode(args, host)
return
if host.config.enable_ui_update:
logger.debug('Update from UI enabled.')
metadata = host.control_server_client.GetHostMetadata(
host.config.hostname)
test_harness_image = metadata.get(_TEST_HARNESS_IMAGE_KEY)
logger.debug('Found metadata: %s.', metadata)
if test_harness_image:
logger.debug('Pinned to image: %s.', test_harness_image)
host.config = host.config.SetDockerImage(test_harness_image)
else:
logger.warning(
'No test_harness_image is found in HostMetadata, updating with '
'image from lab config file.')
_UpdateMttNode(args, host)
def testCreateHost_withoutLabConfig(self, mock_getfqdn):
mock_getfqdn.return_value = 'host1.google.com'
args = mock.MagicMock(lab_config_path=None,
service_account_json_key_path=None)
host = host_util.CreateHost(args)
self.assertEqual('host1.google.com', host.config.hostname)
self.assertEqual(host_util._DEFAULT_MTT_IMAGE,
host.config.docker_image)
self.assertIsNotNone(host.context)
def testCreateHost(self, mock_gethostname, mock_build_lab_config_pool):
mock_gethostname.return_value = 'host1'
mock_build_lab_config_pool.return_value = self.mock_lab_config_pool
self.mock_lab_config_pool.GetHostConfig.return_value = self.host_config1
args = mock.MagicMock(lab_config_path='lab_config.yaml',
service_account_json_key_path=None)
host = host_util.CreateHost(args)
self.assertEqual(self.host_config1, host.config)
self.assertIsNotNone(host.context)
def Stop(args, host=None):
"""Execute 'mtt stop [OPTION] ...' on local host.
Args:
args: a parsed argparse.Namespace object.
host: an instance of host_util.Host.
"""
host = host or host_util.CreateHost(args)
_StopMttDaemon(host)
_StopMttNode(args, host)
def testCreateHost_WithOverrideValue(self, mock_gethostname,
mock_build_lab_config_pool):
json_key_path = '/path/to/key.json'
mock_gethostname.return_value = 'host1'
mock_build_lab_config_pool.return_value = self.mock_lab_config_pool
self.mock_lab_config_pool.GetHostConfig.return_value = self.host_config1
args = mock.MagicMock(lab_config_path='lab_config.yaml',
service_account_json_key_path=json_key_path)
host = host_util.CreateHost(args)
self.assertEqual(json_key_path,
host.config.service_account_json_key_path)
self.assertIsNotNone(host.context)
def Update(args, host=None):
"""Execute 'mtt update [OPTION] ...' on the local host.
Args:
args: a parsed argparse.Namespace object.
host: an instance of host_util.Host.
"""
host = host or host_util.CreateHost(args)
_StopMttDaemon(host)
if host.config.enable_autoupdate:
_StartMttDaemon(args, host)
return
if host.config.enable_ui_update:
host.control_server_client.PatchTestHarnessImageToHostMetadata(
host.config.hostname, host.config.docker_image)
_StartMttDaemon(args, host)
return
_UpdateMttNode(args, host)
def Start(args, host=None):
"""Execute 'mtt start [OPTION] ...' on local host.
Args:
args: a parsed argparse.Namespace object.
host: an instance of host_util.Host.
Raises:
RuntimeError: if a MTT node fails to start.
"""
host = host or host_util.CreateHost(args)
if host.config.enable_autoupdate:
_StartMttDaemon(args, host)
return
if host.config.enable_ui_update:
host.control_server_client.PatchTestHarnessImageToHostMetadata(
host.config.hostname, host.config.docker_image)
_StartMttDaemon(args, host)
return
_StartMttNode(args, host)