def test_resource_in_resource_map(self):
"""
Test _release_resource() with a valid resource. This should remove the resource from the
database.
"""
# Set up two workers
now = datetime.utcnow()
worker_1 = Worker(name=WORKER_1, last_heartbeat=now)
worker_1.save()
worker_2 = Worker(name=WORKER_2, last_heartbeat=now)
worker_2.save()
# Set up two reserved resources
reserved_resource_1 = ReservedResource(task_id=str(uuid.uuid4()),
worker_name=worker_1.name, resource_id='resource_1')
reserved_resource_1.save()
reserved_resource_2 = ReservedResource(task_id=str(uuid.uuid4()),
worker_name=worker_2.name, resource_id='resource_2')
reserved_resource_2.save()
# This should remove resource_2 from the _resource_map.
tasks._release_resource(reserved_resource_2.task_id)
# resource_2 should have been removed from the database
self.assertEqual(ReservedResource.objects.count(), 1)
rr_1 = ReservedResource.objects.get(task_id=reserved_resource_1.task_id)
self.assertEqual(rr_1['worker_name'], reserved_resource_1.worker_name)
self.assertEqual(rr_1['resource_id'], 'resource_1')
def test__release_resource_task_count_one(self):
"""
Test _release_resource() with a resource that has a task count of one. This should remove
the resource from the database.
"""
# Set up two workers
now = datetime.utcnow()
worker_1 = Worker(WORKER_1, now)
worker_1.save()
worker_2 = Worker(WORKER_2, now)
worker_2.save()
# Set up two reserved resources
reserved_resource_1 = ReservedResource('resource_1', worker_1.name, 7)
reserved_resource_1.save()
reserved_resource_2 = ReservedResource('resource_2', worker_2.name, 1)
reserved_resource_2.save()
# This should remove resource_2 from the _resource_map.
tasks._release_resource('resource_2')
# resource_2 should have been removed from the database
rrc = ReservedResource.get_collection()
self.assertEqual(rrc.count(), 1)
rr_1 = rrc.find_one({'_id': reserved_resource_1.name})
self.assertEqual(rr_1['assigned_queue'], reserved_resource_1.assigned_queue)
self.assertEqual(rr_1['num_reservations'], 7)
def test_calls_on_failure_handler_if_task_id_is_not_final(self):
self.mock_task_status.objects.filter.return_value = [mock.Mock()]
mock_task = mock.Mock()
self.mock_task.return_value = mock_task
mock_task_id = mock.Mock()
tasks._release_resource(mock_task_id)
self.assertTrue(mock_task.on_failure.called)
def test__release_resource_task_count_two(self):
"""
Test _release_resource() with a resource that has a task count of two. This should simply
decrement the task_count for the resource, but should not remove it from the database.
"""
# Set up two workers
now = datetime.utcnow()
worker_1 = Worker(WORKER_1, now)
worker_1.save()
worker_2 = Worker(WORKER_2, now)
worker_2.save()
# Set up two resource reservations, using our workers from above
reserved_resource_1 = ReservedResource('resource_1', worker_1.name, 7)
reserved_resource_1.save()
reserved_resource_2 = ReservedResource('resource_2', worker_2.name, 2)
reserved_resource_2.save()
# This should reduce the reserved_resource_2 num_reservations to 1.
tasks._release_resource('resource_2')
# Make sure the ReservedResources are also correct
rrc = ReservedResource.get_collection()
self.assertEqual(rrc.count(), 2)
rr_1 = rrc.find_one({'_id': reserved_resource_1.name})
self.assertEqual(rr_1['assigned_queue'], reserved_resource_1.assigned_queue)
self.assertEqual(rr_1['num_reservations'], 7)
rr_2 = rrc.find_one({'_id': reserved_resource_2.name})
self.assertEqual(rr_2['assigned_queue'], reserved_resource_2.assigned_queue)
self.assertEqual(rr_2['num_reservations'], 1)
def test_resource_not_in_resource_map(self):
"""
Test _release_resource() with a resource that is not in the database. This should be
gracefully handled, and result in no changes to the database.
"""
# Set up two workers
worker_1 = Worker(WORKER_1, datetime.utcnow())
worker_1.save()
worker_2 = Worker(WORKER_2, datetime.utcnow())
worker_2.save()
# Set up two resource reservations, using our workers from above
reserved_resource_1 = ReservedResource(uuid.uuid4(), worker_1.name, 'resource_1')
reserved_resource_1.save()
reserved_resource_2 = ReservedResource(uuid.uuid4(), worker_2.name, 'resource_2')
reserved_resource_2.save()
# This should not raise any Exception, but should also not alter either the Worker
# collection or the ReservedResource collection
tasks._release_resource('made_up_resource_id')
# Make sure that the workers collection has not been altered
self.assertEqual(Worker.objects().count(), 2)
worker_1 = Worker.objects().get(name=worker_1.name)
self.assertTrue(worker_1)
worker_2 = Worker.objects().get(name=worker_2.name)
self.assertTrue(worker_2)
# Make sure that the reserved resources collection has not been altered
rrc = ReservedResource.get_collection()
self.assertEqual(rrc.count(), 2)
rr_1 = rrc.find_one({'_id': reserved_resource_1.task_id})
self.assertEqual(rr_1['worker_name'], reserved_resource_1.worker_name)
self.assertEqual(rr_1['resource_id'], 'resource_1')
rr_2 = rrc.find_one({'_id': reserved_resource_2.task_id})
self.assertEqual(rr_2['worker_name'], reserved_resource_2.worker_name)
self.assertEqual(rr_2['resource_id'], 'resource_2')
def test_calls_on_failure_handler_if_task_id_is_not_final(self):
self.mock_task_status.objects.filter.return_value = [mock.Mock()]
mock_task = mock.Mock()
self.mock_task.return_value = mock_task
mock_task_id = mock.Mock()
tasks._release_resource(mock_task_id)
self.assertTrue(mock_task.on_failure.called)
def test__release_resource_task_count_two(self):
"""
Test _release_resource() with a resource that has a task count of two. This should simply
decrement the task_count for the resource, but should not remove it from the database.
"""
# Set up two workers
now = datetime.utcnow()
worker_1 = Worker(WORKER_1, now)
worker_1.save()
worker_2 = Worker(WORKER_2, now)
worker_2.save()
# Set up two resource reservations, using our workers from above
reserved_resource_1 = ReservedResource('resource_1', worker_1.name, 7)
reserved_resource_1.save()
reserved_resource_2 = ReservedResource('resource_2', worker_2.name, 2)
reserved_resource_2.save()
# This should reduce the reserved_resource_2 num_reservations to 1.
tasks._release_resource('resource_2')
# Make sure the ReservedResources are also correct
rrc = ReservedResource.get_collection()
self.assertEqual(rrc.count(), 2)
rr_1 = rrc.find_one({'_id': reserved_resource_1.name})
self.assertEqual(rr_1['assigned_queue'],
reserved_resource_1.assigned_queue)
self.assertEqual(rr_1['num_reservations'], 7)
rr_2 = rrc.find_one({'_id': reserved_resource_2.name})
self.assertEqual(rr_2['assigned_queue'],
reserved_resource_2.assigned_queue)
self.assertEqual(rr_2['num_reservations'], 1)
def test__release_resource_task_count_one(self):
"""
Test _release_resource() with a resource that has a task count of one. This should remove
the resource from the database.
"""
# Set up two workers
now = datetime.utcnow()
worker_1 = Worker(WORKER_1, now)
worker_1.save()
worker_2 = Worker(WORKER_2, now)
worker_2.save()
# Set up two reserved resources
reserved_resource_1 = ReservedResource('resource_1', worker_1.name, 7)
reserved_resource_1.save()
reserved_resource_2 = ReservedResource('resource_2', worker_2.name, 1)
reserved_resource_2.save()
# This should remove resource_2 from the _resource_map.
tasks._release_resource('resource_2')
# resource_2 should have been removed from the database
rrc = ReservedResource.get_collection()
self.assertEqual(rrc.count(), 1)
rr_1 = rrc.find_one({'_id': reserved_resource_1.name})
self.assertEqual(rr_1['assigned_queue'],
reserved_resource_1.assigned_queue)
self.assertEqual(rr_1['num_reservations'], 7)
def test_resource_in_resource_map(self):
"""
Test _release_resource() with a valid resource. This should remove the resource from the
database.
"""
# Set up two workers
now = datetime.utcnow()
worker_1 = Worker(WORKER_1, now)
worker_1.save()
worker_2 = Worker(WORKER_2, now)
worker_2.save()
# Set up two reserved resources
reserved_resource_1 = ReservedResource(uuid.uuid4(), worker_1.name, 'resource_1')
reserved_resource_1.save()
reserved_resource_2 = ReservedResource(uuid.uuid4(), worker_2.name, 'resource_2')
reserved_resource_2.save()
# This should remove resource_2 from the _resource_map.
tasks._release_resource(reserved_resource_2.task_id)
# resource_2 should have been removed from the database
rrc = ReservedResource.get_collection()
self.assertEqual(rrc.count(), 1)
rr_1 = rrc.find_one({'_id': reserved_resource_1.task_id})
self.assertEqual(rr_1['worker_name'], reserved_resource_1.worker_name)
self.assertEqual(rr_1['resource_id'], 'resource_1')
def test_resource_in_resource_map(self):
"""
Test _release_resource() with a valid resource. This should remove the resource from the
database.
"""
# Set up two workers
now = datetime.utcnow()
worker_1 = Worker(WORKER_1, now)
worker_1.save()
worker_2 = Worker(WORKER_2, now)
worker_2.save()
# Set up two reserved resources
reserved_resource_1 = ReservedResource(uuid.uuid4(), worker_1.name,
'resource_1')
reserved_resource_1.save()
reserved_resource_2 = ReservedResource(uuid.uuid4(), worker_2.name,
'resource_2')
reserved_resource_2.save()
# This should remove resource_2 from the _resource_map.
tasks._release_resource(reserved_resource_2.task_id)
# resource_2 should have been removed from the database
rrc = ReservedResource.get_collection()
self.assertEqual(rrc.count(), 1)
rr_1 = rrc.find_one({'_id': reserved_resource_1.task_id})
self.assertEqual(rr_1['worker_name'], reserved_resource_1.worker_name)
self.assertEqual(rr_1['resource_id'], 'resource_1')
def test_deletes_reserved_resource(self):
mock_task_id = mock.Mock()
tasks._release_resource(mock_task_id)
self.mock_reserved_resource.objects.assert_called_once_with(
task_id=mock_task_id)
self.mock_reserved_resource.objects.return_value.delete.assert_called_once_with(
)
def test_resource_not_in_resource_map(self):
"""
Test _release_resource() with a resource that is not in the database. This should be
gracefully handled, and result in no changes to the database.
"""
# Set up two workers
worker_1 = Worker(name=WORKER_1, last_heartbeat=datetime.utcnow())
worker_1.save()
worker_2 = Worker(name=WORKER_2, last_heartbeat=datetime.utcnow())
worker_2.save()
# Set up two resource reservations, using our workers from above
reserved_resource_1 = ReservedResource(task_id=str(uuid.uuid4()),
worker_name=worker_1.name,
resource_id='resource_1')
reserved_resource_1.save()
reserved_resource_2 = ReservedResource(task_id=str(uuid.uuid4()),
worker_name=worker_2.name,
resource_id='resource_2')
reserved_resource_2.save()
# This should not raise any Exception, but should also not alter either the Worker
# collection or the ReservedResource collection
tasks._release_resource('made_up_resource_id')
# Make sure that the workers collection has not been altered
self.assertEqual(Worker.objects().count(), 2)
worker_1 = Worker.objects().get(name=worker_1.name)
self.assertTrue(worker_1)
worker_2 = Worker.objects().get(name=worker_2.name)
self.assertTrue(worker_2)
# Make sure that the reserved resources collection has not been altered
self.assertEqual(ReservedResource.objects.count(), 2)
rr_1 = ReservedResource.objects.get(
task_id=reserved_resource_1.task_id)
self.assertEqual(rr_1['worker_name'], reserved_resource_1.worker_name)
self.assertEqual(rr_1['resource_id'], 'resource_1')
rr_2 = ReservedResource.objects.get(
task_id=reserved_resource_2.task_id)
self.assertEqual(rr_2['worker_name'], reserved_resource_2.worker_name)
self.assertEqual(rr_2['resource_id'], 'resource_2')
def test__release_resource_task_count_two(self):
"""
Test _release_resource() with a resource that has a task count of two. This should simply
decrement the task_count for the resource, but should not remove it from the database.
"""
# Set up two available queues
now = datetime.utcnow()
available_queue_1 = AvailableQueue(RESERVED_WORKER_1, now, 7)
available_queue_1.save()
available_queue_2 = AvailableQueue(RESERVED_WORKER_2, now, 2)
available_queue_2.save()
# Set up two resource reservations, using our available_queues from above
reserved_resource_1 = ReservedResource('resource_1', available_queue_1.name,
available_queue_1.num_reservations)
reserved_resource_1.save()
reserved_resource_2 = ReservedResource('resource_2', available_queue_2.name,
available_queue_2.num_reservations)
reserved_resource_2.save()
# This should reduce the reserved_resource_2 num_reservations to 1, and should also reduce
# available_queue_2's num_reservations to 1.
tasks._release_resource('resource_2')
# Make sure that the AvailableQueues are correct
aqc = AvailableQueue.get_collection()
self.assertEqual(aqc.count(), 2)
aq_1 = aqc.find_one({'_id': available_queue_1.name})
self.assertEqual(aq_1['num_reservations'], 7)
aq_2 = aqc.find_one({'_id': available_queue_2.name})
self.assertEqual(aq_2['num_reservations'], 1)
# Make sure the ReservedResources are also correct
rrc = ReservedResource.get_collection()
self.assertEqual(rrc.count(), 2)
rr_1 = rrc.find_one({'_id': reserved_resource_1.name})
self.assertEqual(rr_1['assigned_queue'], reserved_resource_1.assigned_queue)
self.assertEqual(rr_1['num_reservations'], 7)
rr_2 = rrc.find_one({'_id': reserved_resource_2.name})
self.assertEqual(rr_2['assigned_queue'], reserved_resource_2.assigned_queue)
self.assertEqual(rr_2['num_reservations'], 1)
def test__release_resource_not_in__resource_map(self):
"""
Test _release_resource() with a resource that is not in the database. This should be
gracefully handled, and result in no changes to the database.
"""
# Set up two available queues
available_queue_1 = AvailableQueue(RESERVED_WORKER_1, datetime.utcnow(), 7)
available_queue_1.save()
available_queue_2 = AvailableQueue(RESERVED_WORKER_2, datetime.utcnow(), 3)
available_queue_2.save()
# Set up two resource reservations, using our available_queues from above
reserved_resource_1 = ReservedResource('resource_1', available_queue_1.name,
available_queue_1.num_reservations)
reserved_resource_1.save()
reserved_resource_2 = ReservedResource('resource_2', available_queue_2.name,
available_queue_2.num_reservations)
reserved_resource_2.save()
# This should not raise any Exception, but should also not alter either the AvailableQueue
# collection or the ReservedResource collection
tasks._release_resource('made_up_resource_id')
# Make sure that the available queues collection has not been altered
aqc = AvailableQueue.get_collection()
self.assertEqual(aqc.count(), 2)
aq_1 = aqc.find_one({'_id': available_queue_1.name})
self.assertEqual(aq_1['num_reservations'], 7)
aq_2 = aqc.find_one({'_id': available_queue_2.name})
self.assertEqual(aq_2['num_reservations'], 3)
# Make sure that the reserved resources collection has not been altered
rrc = ReservedResource.get_collection()
self.assertEqual(rrc.count(), 2)
rr_1 = rrc.find_one({'_id': reserved_resource_1.name})
self.assertEqual(rr_1['assigned_queue'], reserved_resource_1.assigned_queue)
self.assertEqual(rr_1['num_reservations'], 7)
rr_2 = rrc.find_one({'_id': reserved_resource_2.name})
self.assertEqual(rr_2['assigned_queue'], reserved_resource_2.assigned_queue)
self.assertEqual(rr_2['num_reservations'], 3)
def test__release_resource_not_in__resource_map(self):
"""
Test _release_resource() with a resource that is not in the database. This should be
gracefully handled, and result in no changes to the database.
"""
# Set up two workers
worker_1 = Worker(WORKER_1, datetime.utcnow())
worker_1.save()
worker_2 = Worker(WORKER_2, datetime.utcnow())
worker_2.save()
# Set up two resource reservations, using our workers from above
reserved_resource_1 = ReservedResource('resource_1', worker_1.name, 7)
reserved_resource_1.save()
reserved_resource_2 = ReservedResource('resource_2', worker_2.name, 3)
reserved_resource_2.save()
# This should not raise any Exception, but should also not alter either the Worker
# collection or the ReservedResource collection
tasks._release_resource('made_up_resource_id')
# Make sure that the workers collection has not been altered
worker_collection = Worker.get_collection()
self.assertEqual(worker_collection.count(), 2)
worker_1 = worker_collection.find_one({'_id': worker_1.name})
self.assertTrue(worker_1)
worker_2 = worker_collection.find_one({'_id': worker_2.name})
self.assertTrue(worker_2)
# Make sure that the reserved resources collection has not been altered
rrc = ReservedResource.get_collection()
self.assertEqual(rrc.count(), 2)
rr_1 = rrc.find_one({'_id': reserved_resource_1.name})
self.assertEqual(rr_1['assigned_queue'],
reserved_resource_1.assigned_queue)
self.assertEqual(rr_1['num_reservations'], 7)
rr_2 = rrc.find_one({'_id': reserved_resource_2.name})
self.assertEqual(rr_2['assigned_queue'],
reserved_resource_2.assigned_queue)
self.assertEqual(rr_2['num_reservations'], 3)
def test__release_resource_task_count_one(self):
"""
Test _release_resource() with a resource that has a task count of one. This should remove
the resource from the database.
"""
# Set up two available queues
now = datetime.utcnow()
available_queue_1 = AvailableQueue(RESERVED_WORKER_1, now, 7)
available_queue_1.save()
available_queue_2 = AvailableQueue(RESERVED_WORKER_2, now, 1)
available_queue_2.save()
# Set up two reserved resources
reserved_resource_1 = ReservedResource('resource_1', available_queue_1.name,
available_queue_1.num_reservations)
reserved_resource_1.save()
reserved_resource_2 = ReservedResource('resource_2', available_queue_2.name,
available_queue_2.num_reservations)
reserved_resource_2.save()
# This should remove resource_2 from the _resource_map, and should reduce the queue's task
# count to 0.
tasks._release_resource('resource_2')
# available_queue_2 should have had its num_reservations reduced to 0, and the other one
# should have remained the same
aqc = AvailableQueue.get_collection()
self.assertEqual(aqc.count(), 2)
aq_1 = aqc.find_one({'_id': available_queue_1.name})
self.assertEqual(aq_1['num_reservations'], 7)
aq_2 = aqc.find_one({'_id': available_queue_2.name})
self.assertEqual(aq_2['num_reservations'], 0)
# resource_2 should have been removed from the database
rrc = ReservedResource.get_collection()
self.assertEqual(rrc.count(), 1)
rr_1 = rrc.find_one({'_id': reserved_resource_1.name})
self.assertEqual(rr_1['assigned_queue'], reserved_resource_1.assigned_queue)
self.assertEqual(rr_1['num_reservations'], 7)
def test__release_resource_queue_task_count_zero(self):
"""
Test _release_resource() with a resource that has a queue with a task count of zero. This
should not decrement the queue task count into the negative range.
"""
# Set up two available queues, the second with a task count of 0
now = datetime.utcnow()
available_queue_1 = AvailableQueue(RESERVED_WORKER_1, now, 7)
available_queue_1.save()
available_queue_2 = AvailableQueue(RESERVED_WORKER_2, now, 0)
available_queue_2.save()
# Set up two reserved resources, and let's make it so the second one is out of sync with its
# queue's task count by setting its num_reservations to 1
reserved_resource_1 = ReservedResource('resource_1', available_queue_1.name,
available_queue_1.num_reservations)
reserved_resource_1.save()
reserved_resource_2 = ReservedResource('resource_2', available_queue_2.name, 1)
reserved_resource_2.save()
# This should remove resource_2 from the _resource_map, but should leave the queue's task
# count at 0.
tasks._release_resource('resource_2')
# The _available_queue_task_counts should remain as they were before, since we don't want
# queue lengths below zero
aqc = AvailableQueue.get_collection()
self.assertEqual(aqc.count(), 2)
aq_1 = aqc.find_one({'_id': available_queue_1.name})
self.assertEqual(aq_1['num_reservations'], 7)
aq_2 = aqc.find_one({'_id': available_queue_2.name})
self.assertEqual(aq_2['num_reservations'], 0)
# resource_2 should have been removed from the database
rrc = ReservedResource.get_collection()
self.assertEqual(rrc.count(), 1)
rr_1 = rrc.find_one({'_id': reserved_resource_1.name})
self.assertEqual(rr_1['assigned_queue'], reserved_resource_1.assigned_queue)
self.assertEqual(rr_1['num_reservations'], 7)
def test_deletes_reserved_resource(self):
mock_task_id = mock.Mock()
tasks._release_resource(mock_task_id)
self.mock_reserved_resource.objects.assert_called_once_with(task_id=mock_task_id)
self.mock_reserved_resource.objects.return_value.delete.assert_called_once_with()
def test_finds_running_task_by_uuid(self):
mock_task_id = mock.Mock()
tasks._release_resource(mock_task_id)
filter_obj = self.mock_task_status.objects.filter
filter_obj.assert_called_once_with(task_id=mock_task_id,
state=self.mock_constants.CALL_RUNNING_STATE)
def test_finds_running_task_by_uuid(self):
mock_task_id = mock.Mock()
tasks._release_resource(mock_task_id)
filter_obj = self.mock_task_status.objects.filter
filter_obj.assert_called_once_with(
task_id=mock_task_id, state=self.mock_constants.CALL_RUNNING_STATE)