def tear_down_sources_task_error_processing_test(self):
"""Test error processing task to tear down installation sources."""
tear_down_task1 = create_autospec(Task)
tear_down_task2 = create_autospec(Task)
tear_down_task3 = create_autospec(Task)
tear_down_task1.run.side_effect = SourceTearDownError("task1 error")
tear_down_task3.run.side_effect = SourceTearDownError("task3 error")
source1 = create_autospec(PayloadSourceBase)
source2 = create_autospec(PayloadSourceBase)
source1.tear_down_with_tasks.return_value = [tear_down_task1, tear_down_task2]
source2.tear_down_with_tasks.return_value = [tear_down_task3]
task = TearDownSourcesTask([source1, source2])
with self.assertLogs(level="ERROR") as cm:
with self.assertRaises(SourceTearDownError):
task.run()
self.assertTrue(any(map(lambda x: "task1 error" in x, cm.output)))
self.assertTrue(any(map(lambda x: "task3 error" in x, cm.output)))
# all the tasks should be tear down even when exception raised
tear_down_task1.run.assert_called_once()
tear_down_task2.run.assert_called_once()
tear_down_task3.run.assert_called_once()
def run(self):
"""Collect and call tear down tasks for all the sources."""
if not self._sources:
raise SourceSetupError("No sources specified for tear down!")
errors = []
for source in self._sources:
tasks = source.tear_down_with_tasks()
log.debug("Collected %s tasks from %s source",
[task.name for task in tasks],
source.type)
for task in tasks:
log.debug("Running task %s", task.name)
try:
task.run()
except SourceTearDownError as e:
message = "Task '{}' from source '{}' has failed, reason: {}".format(
task.name, source.type, str(e))
errors.append(message)
log.error("%s\n%s", message, traceback.format_exc())
if errors:
raise SourceTearDownError("Sources tear down have failed", errors)
def _check_mount(self):
"""Check if the source is unmounted."""
if os.path.ismount(self._target_mount):
raise SourceTearDownError(
"The mount point {} is still in use.".format(
self._target_mount))