class TestProcessorWithStartedTask(unittest.TestCase):
"""We want to make sure administrative tools can mark a task as failed
or completed without calling start, if the task is already
storing its PID
"""
@mock.patch("redis.StrictRedis", autospec=True)
@mock.patch("blueque.client.RedisQueue", autospec=True)
def setUp(self, mock_redis_queue_class, mock_strict_redis):
self.mock_redis_queue = mock_redis_queue_class.return_value
self.mock_strict_redis = mock_strict_redis.from_url.return_value
self.mock_strict_redis.hgetall.return_value = {
"queue": "some.queue",
"status": "reserved",
"node": "host_1234",
"pid": 4321,
"parameters": "some parameters"
}
self.client = Client("redis://asdf:1234")
self.task = self.client.get_task("some_task")
self.processor = self.client.get_processor(self.task)
def test_complete_marks_task_completed(self):
self.processor.complete("some result")
self.mock_redis_queue.complete.assert_called_with(
"some_task", "host_1234", 4321, "some result")
def test_fail_marks_task_failed(self):
self.processor.fail("some error")
self.mock_redis_queue.fail.assert_called_with("some_task", "host_1234",
4321, "some error")
class TestProcessorWithStartedTask(unittest.TestCase):
"""We want to make sure administrative tools can mark a task as failed
or completed without calling start, if the task is already
storing its PID
"""
@mock.patch("redis.StrictRedis", autospec=True)
@mock.patch("blueque.client.RedisQueue", autospec=True)
def setUp(self, mock_redis_queue_class, mock_strict_redis):
self.mock_redis_queue = mock_redis_queue_class.return_value
self.mock_strict_redis = mock_strict_redis.return_value
self.mock_strict_redis.hgetall.return_value = {
"queue": "some.queue",
"status": "reserved",
"node": "host_1234",
"pid": 4321,
"parameters": "some parameters",
}
self.client = Client(hostname="asdf", port=1234, db=0)
self.task = self.client.get_task("some_task")
self.processor = self.client.get_processor(self.task)
def test_complete_marks_task_completed(self):
self.processor.complete("some result")
self.mock_redis_queue.complete.assert_called_with("some_task", "host_1234", 4321, "some result")
def test_fail_marks_task_failed(self):
self.processor.fail("some error")
self.mock_redis_queue.fail.assert_called_with("some_task", "host_1234", 4321, "some error")
class TestQueue(unittest.TestCase):
@mock.patch("redis.StrictRedis", autospec=True)
@mock.patch("blueque.client.RedisQueue", autospec=True)
def setUp(self, mock_redis_queue_class, mock_strict_redis):
self.mock_strict_redis = mock_strict_redis
self.mock_redis_queue_class = mock_redis_queue_class
self.mock_redis_queue = mock_redis_queue_class.return_value
self.client = Client("asdf", 1234, 0)
self.queue = self.client.get_queue("some.queue")
def test_name_passed_to_redis_queue(self):
self.mock_redis_queue_class.assert_called_with(
"some.queue", self.mock_strict_redis.return_value)
def test_enqueue_enqueues_task(self):
self.mock_redis_queue.enqueue.return_value = "task_id"
task_id = self.queue.enqueue("the parameters")
self.assertEqual("task_id", task_id)
self.mock_redis_queue.enqueue.assert_called_with("the parameters")
def test_schedule_schedules_task(self):
self.mock_redis_queue.schedule.return_value = "task_id"
task_id = self.queue.schedule("some parameters", 24.3)
self.assertEqual("task_id", task_id)
self.mock_redis_queue.schedule.assert_called_with("some parameters", 24.3)
def test_enqueue_due_tasks_enqueues_due_tasks(self):
self.queue.enqueue_due_tasks()
self.mock_redis_queue.enqueue_due_tasks.assert_called_with()
def test_delete_deletes_task(self):
self.mock_strict_redis.return_value.hgetall.return_value = {
"status": "complete",
"queue": "some.queue"
}
task = self.client.get_task("some_task")
self.queue.delete_task(task)
self.mock_redis_queue.delete_task.assert_called_with("some_task", "complete")
def test_delete_errors_on_wrong_queue(self):
self.mock_strict_redis.return_value.hgetall.return_value = {
"status": "complete",
"queue": "other.queue"
}
task = self.client.get_task("some_task")
with self.assertRaisesRegexp(ValueError, "Task some_task is not in queue some.queue"):
self.queue.delete_task(task)
def setUp(self, mock_redis_class):
self.mock_strict_redis = mock_redis_class.from_url.return_value
self.task_callback = mock.Mock()
self.client = Client("redis://asdf:1234")
self.runner = forking_runner.ForkingRunner(self.client, "some.queue",
self.task_callback)
def setUp(self, mock_redis_queue_class, mock_strict_redis):
self.mock_strict_redis = mock_strict_redis.from_url.return_value
self.mock_redis_queue_class = mock_redis_queue_class
self.mock_redis_queue = mock_redis_queue_class.return_value
self.client = Client("redis://asdf:1234")
self.queue = self.client.get_queue("some.queue")
def setUp(self, mock_redis_queue_class, mock_strict_redis):
self.mock_redis_queue = mock_redis_queue_class.return_value
self.mock_strict_redis = mock_strict_redis.from_url.return_value
self.mock_strict_redis.hgetall.return_value = {
"queue": "some.queue",
"status": "reserved",
"node": "host_1234",
"parameters": "some parameters"
}
self.client = Client("redis://asdf:1234")
self.task = self.client.get_task("some_task")
self.processor = self.client.get_processor(self.task)
def test_client_passes_additional_args_to_client(self, mock_redis_class):
self.client = Client("redis://url", 4, socket_timeout=5)
mock_redis_class.from_url.assert_called_with("redis://url",
4,
decode_responses=True,
socket_timeout=5)
def setUp(self, strict_redis_class):
self.mock_strict_redis = strict_redis_class.return_value
self.task_callback = mock.Mock()
self.client = Client(hostname="asdf", port=1234, db=0)
self.runner = forking_runner.ForkingRunner(self.client, "some.queue", self.task_callback)
def setUp(self, mock_redis_queue_class, mock_strict_redis):
self.mock_strict_redis = mock_strict_redis
self.mock_redis_queue_class = mock_redis_queue_class
self.mock_redis_queue = mock_redis_queue_class.return_value
self.client = Client("asdf", 1234, 0)
self.queue = self.client.get_queue("some.queue")
class TestProcessor(unittest.TestCase):
@mock.patch("redis.StrictRedis", autospec=True)
@mock.patch("blueque.client.RedisQueue", autospec=True)
def setUp(self, mock_redis_queue_class, mock_strict_redis):
self.mock_redis_queue = mock_redis_queue_class.return_value
self.mock_strict_redis = mock_strict_redis.from_url.return_value
self.mock_strict_redis.hgetall.return_value = {
"queue": "some.queue",
"status": "reserved",
"node": "host_1234",
"parameters": "some parameters"
}
self.client = Client("redis://asdf:1234")
self.task = self.client.get_task("some_task")
self.processor = self.client.get_processor(self.task)
def test_start_starts_processor(self):
self.processor.start(4321)
self.mock_redis_queue.start.assert_called_with("some_task",
"host_1234", 4321)
def test_complete_marks_task_completed(self):
# Can't complete an unstarted process
self.processor.start(4321)
self.processor.complete("some result")
self.mock_redis_queue.complete.assert_called_with(
"some_task", "host_1234", 4321, "some result")
def test_fail_marks_task_failed(self):
# Can't complete an unstarted process
self.processor.start(4321)
self.processor.fail("some error")
self.mock_redis_queue.fail.assert_called_with("some_task", "host_1234",
4321, "some error")
class TestProcessor(unittest.TestCase):
@mock.patch("redis.StrictRedis", autospec=True)
@mock.patch("blueque.client.RedisQueue", autospec=True)
def setUp(self, mock_redis_queue_class, mock_strict_redis):
self.mock_redis_queue = mock_redis_queue_class.return_value
self.mock_strict_redis = mock_strict_redis.return_value
self.mock_strict_redis.hgetall.return_value = {
"queue": "some.queue",
"status": "reserved",
"node": "host_1234",
"parameters": "some parameters"
}
self.client = Client(hostname="asdf", port=1234, db=0)
self.task = self.client.get_task("some_task")
self.processor = self.client.get_processor(self.task)
def test_start_starts_processor(self):
self.processor.start(4321)
self.mock_redis_queue.start.assert_called_with("some_task", "host_1234", 4321)
def test_complete_marks_task_completed(self):
# Can't complete an unstarted process
self.processor.start(4321)
self.processor.complete("some result")
self.mock_redis_queue.complete.assert_called_with(
"some_task", "host_1234", 4321, "some result")
def test_fail_marks_task_failed(self):
# Can't complete an unstarted process
self.processor.start(4321)
self.processor.fail("some error")
self.mock_redis_queue.fail.assert_called_with(
"some_task", "host_1234", 4321, "some error")
def setUp(self, mock_redis_queue_class, mock_strict_redis):
self.mock_redis_queue = mock_redis_queue_class.return_value
self.mock_strict_redis = mock_strict_redis.return_value
self.mock_strict_redis.hgetall.return_value = {
"queue": "some.queue",
"status": "reserved",
"node": "host_1234",
"parameters": "some parameters",
}
self.client = Client(hostname="asdf", port=1234, db=0)
self.task = self.client.get_task("some_task")
self.processor = self.client.get_processor(self.task)
class TestQueue(unittest.TestCase):
@mock.patch("redis.StrictRedis", autospec=True)
@mock.patch("blueque.client.RedisQueue", autospec=True)
def setUp(self, mock_redis_queue_class, mock_strict_redis):
self.mock_strict_redis = mock_strict_redis.from_url.return_value
self.mock_redis_queue_class = mock_redis_queue_class
self.mock_redis_queue = mock_redis_queue_class.return_value
self.client = Client("redis://asdf:1234")
self.queue = self.client.get_queue("some.queue")
def test_name_passed_to_redis_queue(self):
self.mock_redis_queue_class.assert_called_with("some.queue",
self.mock_strict_redis)
def test_enqueue_enqueues_task(self):
self.mock_redis_queue.enqueue.return_value = "task_id"
task_id = self.queue.enqueue("the parameters")
self.assertEqual("task_id", task_id)
self.mock_redis_queue.enqueue.assert_called_with("the parameters")
def test_schedule_schedules_task(self):
self.mock_redis_queue.schedule.return_value = "task_id"
task_id = self.queue.schedule("some parameters", 24.3)
self.assertEqual("task_id", task_id)
self.mock_redis_queue.schedule.assert_called_with(
"some parameters", 24.3)
def test_enqueue_due_tasks_enqueues_due_tasks(self):
self.queue.enqueue_due_tasks()
self.mock_redis_queue.enqueue_due_tasks.assert_called_with()
def test_delete_deletes_task(self):
self.mock_strict_redis.hgetall.return_value = {
"status": "complete",
"queue": "some.queue"
}
task = self.client.get_task("some_task")
self.queue.delete_task(task)
self.mock_redis_queue.delete_task.assert_called_with(
"some_task", "complete")
def test_delete_errors_on_wrong_queue(self):
self.mock_strict_redis.hgetall.return_value = {
"status": "complete",
"queue": "other.queue"
}
task = self.client.get_task("some_task")
with self.assertRaisesRegexp(
ValueError, "Task some_task is not in queue some.queue"):
self.queue.delete_task(task)
def setUp(self, redis_class):
self.mock_redis = redis_class.return_value
self.client = Client("asdf", 1234, 0)
class TestForkingRunner(unittest.TestCase):
@mock.patch("redis.StrictRedis", autospec=True)
def setUp(self, mock_redis_class):
self.mock_strict_redis = mock_redis_class.from_url.return_value
self.task_callback = mock.Mock()
self.client = Client("redis://*****:*****@mock.patch("logging.info")
@mock.patch("os.fork", return_value=1234)
@mock.patch("os.waitpid", return_value=(1234, 0))
def test_run_starts_unstarted_orphan(self, mock_waitpid, mock_fork,
mock_info, redis_queue_class):
with mock.patch.object(self.client,
'get_listener') as mock_get_listener:
mock_listener = mock_get_listener.return_value
mock_listener.listen.side_effect = BreakLoop()
mock_listener.claim_orphan.side_effect = [
self._get_task(status="reserved"), None
]
try:
self.runner.run()
except BreakLoop:
pass
mock_get_listener.assert_called_with("some.queue")
mock_listener.claim_orphan.assert_called_with()
mock_fork.assert_has_calls([mock.call()])
mock_waitpid.assert_has_calls([mock.call(1234, 0)])
mock_info.assert_has_calls([
mock.call("Forked task some_task to pid 1234"),
mock.call("Forked task some_task exited with status 0")
])
@mock.patch("logging.info")
@mock.patch("os.kill", side_effect=[None, None, OSError])
@mock.patch("time.sleep")
def test_run_watches_started_orphan(self, mock_sleep, mock_kill, mock_info,
redis_queue_class):
with mock.patch.object(self.client,
'get_listener') as mock_get_listener:
mock_listener = mock_get_listener.return_value
mock_listener.listen.side_effect = BreakLoop()
mock_listener.claim_orphan.side_effect = [
self._get_task(status="started", pid="1111"), None
]
try:
self.runner.run()
except BreakLoop:
pass
mock_get_listener.assert_called_with("some.queue")
mock_listener.claim_orphan.assert_called_with()
mock_kill.assert_has_calls(
[mock.call(1111, 0),
mock.call(1111, 0),
mock.call(1111, 0)])
mock_sleep.assert_has_calls([mock.call(0.1), mock.call(0.1)])
@mock.patch("logging.info")
@mock.patch("os.kill", side_effect=[OSError, OSError])
@mock.patch("time.sleep")
def test_run_exhausts_all_orphans(self, mock_sleep, mock_kill, mock_info,
redis_queue_class):
with mock.patch.object(self.client,
'get_listener') as mock_get_listener:
mock_listener = mock_get_listener.return_value
mock_listener.listen.side_effect = BreakLoop()
mock_listener.claim_orphan.side_effect = [
self._get_task(status="started", pid="1111"),
self._get_task(status="started", pid="2222"), None
]
try:
self.runner.run()
except BreakLoop:
pass
mock_get_listener.assert_called_with("some.queue")
mock_listener.claim_orphan.assert_has_calls(
[mock.call(), mock.call(),
mock.call()])
mock_kill.assert_has_calls([mock.call(1111, 0), mock.call(2222, 0)])
@mock.patch("logging.info")
@mock.patch("os.fork", return_value=1234)
@mock.patch("os.waitpid", return_value=(1234, 0))
def test_run_listens_for_and_forks_task(self, mock_waitpid, mock_fork,
mock_info, redis_queue_class):
mock_queue = redis_queue_class.return_value
mock_queue.get_listeners.return_value = []
mock_queue.dequeue.side_effect = ["some_task", BreakLoop()]
try:
# Don't want a real thread.
self.runner.run()
except BreakLoop:
pass
redis_queue_class.assert_called_with("some.queue",
self.mock_strict_redis)
mock_queue.get_listeners.assert_called_with()
mock_fork.assert_has_calls([mock.call()])
mock_waitpid.assert_has_calls([mock.call(1234, 0)])
mock_info.assert_has_calls([
mock.call("Forked task some_task to pid 1234"),
mock.call("Forked task some_task exited with status 0")
])
@mock.patch("os.fork", side_effect=[1234, 4321])
@mock.patch("os.waitpid", side_effect=[(1234, 0), (4321, 0)])
def test_run_keeps_running_tasks(self, mock_waitpid, mock_fork,
redis_queue_class):
mock_queue = redis_queue_class.return_value
mock_queue.dequeue.side_effect = [
"some_task", "other_task", BreakLoop()
]
try:
# Don't want a real thread.
self.runner.run()
except BreakLoop:
pass
redis_queue_class.assert_called_with("some.queue",
self.mock_strict_redis)
mock_fork.assert_has_calls([mock.call(), mock.call()])
mock_waitpid.assert_has_calls([mock.call(1234, 0), mock.call(4321, 0)])
@mock.patch("os.fork", return_value=1234)
def test_fork_task_returns_pid_in_parent(self, mock_fork,
redis_queue_class):
task = self._get_task()
pid = self.runner.fork_task(task)
self.assertEqual(1234, pid)
@mock.patch("logging.shutdown")
@mock.patch("sys.stdout", wraps=sys.stdout)
@mock.patch("sys.stderr", wraps=sys.stderr)
@mock.patch("random.seed")
@mock.patch("os.getpid", return_value=2222)
@mock.patch("os.setsid")
@mock.patch("os.fork", return_value=0)
@mock.patch("os._exit")
def test_fork_task_runs_task_in_child(self, mock_exit, mock_fork,
mock_setsid, _, mock_seed,
mock_stderr, mock_stdout,
mock_log_shutdown,
redis_queue_class):
mock_queue = redis_queue_class.return_value
self.task_callback.return_value = "some result"
task = self._get_task()
self.runner.fork_task(task)
mock_seed.assert_called_with()
mock_setsid.assert_called_with()
mock_queue.start.assert_called_with("some_task", "some.host_1111",
2222)
self.task_callback.assert_called_with(task)
mock_queue.complete.assert_called_with("some_task", "some.host_1111",
2222, "some result")
mock_log_shutdown.assert_called_with()
mock_stdout.flush.assert_called_with()
mock_stderr.flush.assert_called_with()
mock_exit.assert_called_with(0)
@mock.patch("logging.shutdown")
@mock.patch("sys.stdout", wraps=sys.stdout)
@mock.patch("sys.stderr", wraps=sys.stderr)
@mock.patch("os.getpid", return_value=2222)
@mock.patch("os.setsid")
@mock.patch("os.fork", return_value=0)
@mock.patch("os._exit")
def test_fork_task_fails_task_on_exception(self, mock_exit, mock_fork,
mock_setsid, _, mock_stderr,
mock_stdout, mock_log_shutdown,
redis_queue_class):
mock_queue = redis_queue_class.return_value
callback_exception = Exception("some error")
self.task_callback.side_effect = callback_exception
task = self._get_task()
self.runner.fork_task(task)
mock_setsid.assert_called_with()
mock_queue.start.assert_called_with("some_task", "some.host_1111",
2222)
self.task_callback.assert_called_with(task)
mock_queue.fail.assert_called_with("some_task", "some.host_1111", 2222,
str(callback_exception))
mock_log_shutdown.assert_called_with()
mock_stdout.flush.assert_called_with()
mock_stderr.flush.assert_called_with()
mock_exit.assert_called_with(0)
def test_client_connects_with_requested_information(
self, mock_redis_class):
self.client = Client("redis://url")
mock_redis_class.from_url.assert_called_with("redis://url",
decode_responses=True)
class TestTask(unittest.TestCase):
@mock.patch("redis.StrictRedis", autospec=True)
def setUp(self, redis_class):
self.mock_redis = redis_class.return_value
self.client = Client("asdf", 1234, 0)
def test_can_get_task_with_all_attributes(self):
self.mock_redis.hgetall.return_value = FULL_TASK_DATA
task = self.client.get_task("some_task")
self.mock_redis.hgetall.assert_called_with("blueque_task_some_task")
self.assertEqual("some_task", task.id)
self.assertEqual("complete", task.status)
self.assertEqual("some.queue", task.queue)
self.assertEqual("some parameters", task.parameters)
self.assertEqual("a result", task.result)
self.assertEqual("no error", task.error)
self.assertEqual("some_node", task.node)
self.assertEqual(1234, task.pid)
self.assertEqual(1234.5, task.created)
self.assertEqual(4567.89, task.updated)
def test_cannot_set_properties(self):
self.mock_redis.hgetall.return_value = FULL_TASK_DATA
task = self.client.get_task("some_task")
with self.assertRaises(AttributeError):
task.id = "foo"
with self.assertRaises(AttributeError):
task.status = "foo"
with self.assertRaises(AttributeError):
task.queue = "foo"
with self.assertRaises(AttributeError):
task.parameters = "foo"
with self.assertRaises(AttributeError):
task.result = "foo"
with self.assertRaises(AttributeError):
task.error = "foo"
with self.assertRaises(AttributeError):
task.node = "foo"
with self.assertRaises(AttributeError):
task.pid = 4321
with self.assertRaises(AttributeError):
task.created = 1.2
with self.assertRaises(AttributeError):
task.updated = 2.3
def test_missing_attributes_are_none(self):
self.mock_redis.hgetall.return_value = {}
task = self.client.get_task("some_task")
self.assertEqual(None, task.status)
self.assertEqual(None, task.queue)
self.assertEqual(None, task.parameters)
self.assertEqual(None, task.result)
self.assertEqual(None, task.error)
self.assertEqual(None, task.node)
self.assertEqual(None, task.pid)
self.assertEqual(None, task.created)
self.assertEqual(None, task.updated)
class TestForkingRunner(unittest.TestCase):
@mock.patch("redis.StrictRedis", autospec=True)
def setUp(self, strict_redis_class):
self.mock_strict_redis = strict_redis_class.return_value
self.task_callback = mock.Mock()
self.client = Client(hostname="asdf", port=1234, db=0)
self.runner = forking_runner.ForkingRunner(self.client, "some.queue", self.task_callback)
def _get_task(self, **kwargs):
task_data = {
"status": "reserved",
"parameters": "some params",
"node": "some.host_1111"
}
task_data.update(kwargs)
self.mock_strict_redis.hgetall.return_value = task_data
return self.client.get_task("some_task")
@mock.patch("logging.info")
@mock.patch("os.fork", return_value=1234)
@mock.patch("os.waitpid", return_value=(1234, 0))
def test_run_starts_unstarted_orphan(
self, mock_waitpid, mock_fork, mock_info, redis_queue_class):
with mock.patch.object(self.client, 'get_listener') as mock_get_listener:
mock_listener = mock_get_listener.return_value
mock_listener.listen.side_effect = BreakLoop()
mock_listener.claim_orphan.side_effect = [self._get_task(status="reserved"), None]
try:
self.runner.run()
except BreakLoop:
pass
mock_get_listener.assert_called_with("some.queue")
mock_listener.claim_orphan.assert_called_with()
mock_fork.assert_has_calls([mock.call()])
mock_waitpid.assert_has_calls([mock.call(1234, 0)])
mock_info.assert_has_calls([
mock.call("Forked task some_task to pid 1234"),
mock.call("Forked task some_task exited with status 0")
])
@mock.patch("logging.info")
@mock.patch("os.kill", side_effect=[None, None, OSError])
@mock.patch("time.sleep")
def test_run_watches_started_orphan(
self, mock_sleep, mock_kill, mock_info, redis_queue_class):
with mock.patch.object(self.client, 'get_listener') as mock_get_listener:
mock_listener = mock_get_listener.return_value
mock_listener.listen.side_effect = BreakLoop()
mock_listener.claim_orphan.side_effect = [
self._get_task(status="started", pid="1111"), None]
try:
self.runner.run()
except BreakLoop:
pass
mock_get_listener.assert_called_with("some.queue")
mock_listener.claim_orphan.assert_called_with()
mock_kill.assert_has_calls([
mock.call(1111, 0), mock.call(1111, 0), mock.call(1111, 0)])
mock_sleep.assert_has_calls([mock.call(0.1), mock.call(0.1)])
@mock.patch("logging.info")
@mock.patch("os.kill", side_effect=[OSError, OSError])
@mock.patch("time.sleep")
def test_run_exhausts_all_orphans(
self, mock_sleep, mock_kill, mock_info, redis_queue_class):
with mock.patch.object(self.client, 'get_listener') as mock_get_listener:
mock_listener = mock_get_listener.return_value
mock_listener.listen.side_effect = BreakLoop()
mock_listener.claim_orphan.side_effect = [
self._get_task(status="started", pid="1111"),
self._get_task(status="started", pid="2222"),
None]
try:
self.runner.run()
except BreakLoop:
pass
mock_get_listener.assert_called_with("some.queue")
mock_listener.claim_orphan.assert_has_calls([mock.call(), mock.call(), mock.call()])
mock_kill.assert_has_calls([
mock.call(1111, 0), mock.call(2222, 0)])
@mock.patch("logging.info")
@mock.patch("os.fork", return_value=1234)
@mock.patch("os.waitpid", return_value=(1234, 0))
def test_run_listens_for_and_forks_task(
self, mock_waitpid, mock_fork, mock_info, redis_queue_class):
mock_queue = redis_queue_class.return_value
mock_queue.get_listeners.return_value = []
mock_queue.dequeue.side_effect = ["some_task", BreakLoop()]
try:
# Don't want a real thread.
self.runner.run()
except BreakLoop:
pass
redis_queue_class.assert_called_with("some.queue", self.mock_strict_redis)
mock_queue.get_listeners.assert_called_with()
mock_fork.assert_has_calls([mock.call()])
mock_waitpid.assert_has_calls([mock.call(1234, 0)])
mock_info.assert_has_calls([
mock.call("Forked task some_task to pid 1234"),
mock.call("Forked task some_task exited with status 0")
])
@mock.patch("os.fork", side_effect=[1234, 4321])
@mock.patch("os.waitpid", side_effect=[(1234, 0), (4321, 0)])
def test_run_keeps_running_tasks(self, mock_waitpid, mock_fork, redis_queue_class):
mock_queue = redis_queue_class.return_value
mock_queue.dequeue.side_effect = ["some_task", "other_task", BreakLoop()]
try:
# Don't want a real thread.
self.runner.run()
except BreakLoop:
pass
redis_queue_class.assert_called_with("some.queue", self.mock_strict_redis)
mock_fork.assert_has_calls([mock.call(), mock.call()])
mock_waitpid.assert_has_calls([mock.call(1234, 0), mock.call(4321, 0)])
@mock.patch("os.fork", return_value=1234)
def test_fork_task_returns_pid_in_parent(self, mock_fork, redis_queue_class):
task = self._get_task()
pid = self.runner.fork_task(task)
self.assertEqual(1234, pid)
@mock.patch("logging.shutdown")
@mock.patch("sys.stdout", wraps=sys.stdout)
@mock.patch("sys.stderr", wraps=sys.stderr)
@mock.patch("random.seed")
@mock.patch("os.getpid", return_value=2222)
@mock.patch("os.setsid")
@mock.patch("os.fork", return_value=0)
@mock.patch("os._exit")
def test_fork_task_runs_task_in_child(
self, mock_exit, mock_fork, mock_setsid, _, mock_seed, mock_stderr, mock_stdout,
mock_log_shutdown, redis_queue_class):
mock_queue = redis_queue_class.return_value
self.task_callback.return_value = "some result"
task = self._get_task()
self.runner.fork_task(task)
mock_seed.assert_called_with()
mock_setsid.assert_called_with()
mock_queue.start.assert_called_with("some_task", "some.host_1111", 2222)
self.task_callback.assert_called_with(task)
mock_queue.complete.assert_called_with("some_task", "some.host_1111", 2222, "some result")
mock_log_shutdown.assert_called_with()
mock_stdout.flush.assert_called_with()
mock_stderr.flush.assert_called_with()
mock_exit.assert_called_with(0)
@mock.patch("logging.shutdown")
@mock.patch("sys.stdout", wraps=sys.stdout)
@mock.patch("sys.stderr", wraps=sys.stderr)
@mock.patch("os.getpid", return_value=2222)
@mock.patch("os.setsid")
@mock.patch("os.fork", return_value=0)
@mock.patch("os._exit")
def test_fork_task_fails_task_on_exception(
self, mock_exit, mock_fork, mock_setsid, _, mock_stderr, mock_stdout,
mock_log_shutdown, redis_queue_class):
mock_queue = redis_queue_class.return_value
callback_exception = Exception("some error")
self.task_callback.side_effect = callback_exception
task = self._get_task()
self.runner.fork_task(task)
mock_setsid.assert_called_with()
mock_queue.start.assert_called_with("some_task", "some.host_1111", 2222)
self.task_callback.assert_called_with(task)
mock_queue.fail.assert_called_with(
"some_task", "some.host_1111", 2222, str(callback_exception))
mock_log_shutdown.assert_called_with()
mock_stdout.flush.assert_called_with()
mock_stderr.flush.assert_called_with()
mock_exit.assert_called_with(0)
# This hasn't actually been run; it's just a scratch-pad, for now, to
# figure out what API we want
from __future__ import print_function
from blueque import Client
from blueque import forking_runner
import time
def do_work(task):
print(task.id, task.parameters)
time.sleep(1000)
return "result"
if __name__ == "__main__":
client = Client("redis://localhost")
forking_runner.run(client, "some.queue", do_work, 4)
class TestTask(unittest.TestCase):
@mock.patch("redis.StrictRedis", autospec=True)
def setUp(self, redis_class):
self.mock_redis = redis_class.from_url.return_value
self.client = Client("redis://asdf:1234")
def test_can_get_task_with_all_attributes(self):
self.mock_redis.hgetall.return_value = FULL_TASK_DATA
task = self.client.get_task("some_task")
self.mock_redis.hgetall.assert_called_with("blueque_task_some_task")
self.assertEqual("some_task", task.id)
self.assertEqual("complete", task.status)
self.assertEqual("some.queue", task.queue)
self.assertEqual("some parameters", task.parameters)
self.assertEqual("a result", task.result)
self.assertEqual("no error", task.error)
self.assertEqual("some_node", task.node)
self.assertEqual(1234, task.pid)
self.assertEqual(1234.5, task.created)
self.assertEqual(4567.89, task.updated)
def test_cannot_set_properties(self):
self.mock_redis.hgetall.return_value = FULL_TASK_DATA
task = self.client.get_task("some_task")
with self.assertRaises(AttributeError):
task.id = "foo"
with self.assertRaises(AttributeError):
task.status = "foo"
with self.assertRaises(AttributeError):
task.queue = "foo"
with self.assertRaises(AttributeError):
task.parameters = "foo"
with self.assertRaises(AttributeError):
task.result = "foo"
with self.assertRaises(AttributeError):
task.error = "foo"
with self.assertRaises(AttributeError):
task.node = "foo"
with self.assertRaises(AttributeError):
task.pid = 4321
with self.assertRaises(AttributeError):
task.created = 1.2
with self.assertRaises(AttributeError):
task.updated = 2.3
def test_missing_attributes_are_none(self):
self.mock_redis.hgetall.return_value = {}
task = self.client.get_task("some_task")
self.assertEqual(None, task.status)
self.assertEqual(None, task.queue)
self.assertEqual(None, task.parameters)
self.assertEqual(None, task.result)
self.assertEqual(None, task.error)
self.assertEqual(None, task.node)
self.assertEqual(None, task.pid)
self.assertEqual(None, task.created)
self.assertEqual(None, task.updated)
def setUp(self, redis_class):
self.mock_redis = redis_class.from_url.return_value
self.client = Client("redis://asdf:1234")
class TestListener(unittest.TestCase):
@mock.patch("socket.getfqdn", return_value="somehost.example.com")
@mock.patch("os.getpid", return_value=2314)
@mock.patch("redis.StrictRedis", autospec=True)
@mock.patch("blueque.client.RedisQueue", autospec=True)
def setUp(self, mock_redis_queue_class, mock_strict_redis, _, __):
self.mock_strict_redis = mock_strict_redis
self.mock_redis_queue_class = mock_redis_queue_class
self.mock_redis_queue = mock_redis_queue_class.return_value
self.client = Client("asdf", 1234, 0)
self.listener = self.client.get_listener("some.queue")
def test_listener_adds_itself(self):
self.mock_redis_queue.add_listener.assert_called_with("somehost.example.com_2314")
def test_listener_calls_callback_when_task_in_queue(self):
self.mock_strict_redis.return_value.hgetall.return_value = {
"parameters": "some parameters"
}
self.mock_redis_queue.dequeue.side_effect = ["some_task"]
task = self.listener.listen()
self.mock_redis_queue.dequeue.assert_called_with("somehost.example.com_2314")
self.assertEqual("some_task", task.id)
self.assertEqual("some parameters", task.parameters)
@mock.patch("time.sleep", autospec=True)
def test_listener_sleeps_when_no_task_available(self, mock_sleep):
self.mock_redis_queue.dequeue.side_effect = [None, "some_task"]
task = self.listener.listen()
self.mock_redis_queue.dequeue.assert_has_calls(
[mock.call("somehost.example.com_2314"), mock.call("somehost.example.com_2314")])
mock_sleep.assert_has_calls([mock.call(1)])
self.assertEqual("some_task", task.id)
def test_claim_orphan_returns_none_when_there_are_no_listeners(self):
self.mock_redis_queue.get_listeners.return_value = []
claimed = self.listener.claim_orphan()
self.mock_redis_queue.get_listeners.assert_called_with()
self.assertIsNone(claimed)
@mock.patch("os.kill")
def test_claim_orphan_returns_none_when_there_are_no_listeners_on_this_node(self, mock_kill):
self.mock_redis_queue.get_listeners.return_value = ["other-host_4321"]
claimed = self.listener.claim_orphan()
self.mock_redis_queue.get_listeners.assert_called_with()
self.assertIsNone(claimed)
mock_kill.assert_not_called()
@mock.patch("os.kill")
def test_claim_orphan_returns_none_when_listener_is_self(self, mock_kill):
self.mock_redis_queue.get_listeners.return_value = ["somehost.example.com_2314"]
claimed = self.listener.claim_orphan()
self.mock_redis_queue.get_listeners.assert_called_with()
self.assertIsNone(claimed)
mock_kill.assert_not_called()
@mock.patch("os.kill", return_value=None)
def test_claim_orphan_returns_none_when_listener_is_running(self, mock_kill):
self.mock_redis_queue.get_listeners.return_value = ["somehost.example.com_4321"]
claimed = self.listener.claim_orphan()
self.mock_redis_queue.get_listeners.assert_called_with()
self.assertIsNone(claimed)
mock_kill.assert_called_with(4321, 0)
@mock.patch("os.kill", side_effect=OSError)
def test_claim_orphan_returns_none_when_orphan_claimed(self, mock_kill):
self.mock_redis_queue.get_listeners.return_value = ["somehost.example.com_4321"]
self.mock_redis_queue.remove_listener.return_value = 0
claimed = self.listener.claim_orphan()
self.mock_redis_queue.get_listeners.assert_called_with()
self.mock_redis_queue.remove_listener.assert_called_with("somehost.example.com_4321")
mock_kill.assert_called_with(4321, 0)
self.assertIsNone(claimed)
@mock.patch("os.kill", side_effect=OSError)
def test_claim_orphan_returns_none_when_no_tasks_reserved(self, mock_kill):
self.mock_redis_queue.get_listeners.return_value = ["somehost.example.com_4321"]
self.mock_redis_queue.remove_listener.return_value = 1
self.mock_redis_queue.reclaim_task.return_value = None
claimed = self.listener.claim_orphan()
self.mock_redis_queue.get_listeners.assert_called_with()
self.mock_redis_queue.remove_listener.assert_called_with("somehost.example.com_4321")
mock_kill.assert_called_with(4321, 0)
self.mock_redis_queue.reclaim_task.assert_called_with(
"somehost.example.com_4321", "somehost.example.com_2314")
self.assertIsNone(claimed)
@mock.patch("os.kill", side_effect=OSError)
def test_claim_orphan_returns_task_when_reclaimed(self, mock_kill):
self.mock_redis_queue.get_listeners.return_value = ["somehost.example.com_4321"]
self.mock_redis_queue.remove_listener.return_value = 1
self.mock_redis_queue.reclaim_task.return_value = "some_task"
self.mock_strict_redis.return_value.hgetall.return_value = {
"parameters": "some parameters"
}
claimed = self.listener.claim_orphan()
self.mock_redis_queue.get_listeners.assert_called_with()
self.mock_redis_queue.remove_listener.assert_called_with("somehost.example.com_4321")
mock_kill.assert_called_with(4321, 0)
self.mock_redis_queue.reclaim_task.assert_called_with(
"somehost.example.com_4321", "somehost.example.com_2314")
self.mock_strict_redis.return_value.hgetall.assert_called_with("blueque_task_some_task")
self.assertIsNotNone(claimed)
self.assertEqual("some parameters", claimed.parameters)