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(str(uuid.uuid4()), worker_1.name, 'resource_1')
reserved_resource_1.save()
reserved_resource_2 = ReservedResource(str(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
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_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_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')
