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from unittest.mock import ANY, Mock
import pytest
from kombu import Exchange, Queue
from kombu.utils.functional import maybe_evaluate
from celery.app import routes
from celery.exceptions import QueueNotFound
from celery.utils.imports import qualname
def Router(app, *args, **kwargs):
return routes.Router(*args, app=app, **kwargs)
def E(app, queues):
def expand(answer):
return Router(app, [], queues).expand_destination(answer)
return expand
def set_queues(app, **queues):
app.conf.task_queues = queues
app.amqp.queues = app.amqp.Queues(queues)
class RouteCase:
def setup_method(self):
self.a_queue = {
'exchange': 'fooexchange',
'exchange_type': 'fanout',
'routing_key': 'xuzzy',
}
self.b_queue = {
'exchange': 'barexchange',
'exchange_type': 'topic',
'routing_key': 'b.b.#',
}
self.d_queue = {
'exchange': self.app.conf.task_default_exchange,
'exchange_type': self.app.conf.task_default_exchange_type,
'routing_key': self.app.conf.task_default_routing_key,
}
@self.app.task(shared=False)
def mytask(*args, **kwargs):
pass
self.mytask = mytask
def assert_routes_to_queue(self, queue, router, name,
args=None, kwargs=None, options=None):
if options is None:
options = {}
if kwargs is None:
kwargs = {}
if args is None:
args = []
assert router.route(options, name, args, kwargs)[
'queue'].name == queue
def assert_routes_to_default_queue(self, router, name, *args, **kwargs):
self.assert_routes_to_queue(
self.app.conf.task_default_queue, router, name, *args, **kwargs)
class test_MapRoute(RouteCase):
def test_route_for_task_expanded_route(self):
set_queues(self.app, foo=self.a_queue, bar=self.b_queue)
expand = E(self.app, self.app.amqp.queues)
route = routes.MapRoute({self.mytask.name: {'queue': 'foo'}})
assert expand(route(self.mytask.name))['queue'].name == 'foo'
assert route('celery.awesome') is None
def test_route_for_task(self):
set_queues(self.app, foo=self.a_queue, bar=self.b_queue)
expand = E(self.app, self.app.amqp.queues)
route = routes.MapRoute({self.mytask.name: self.b_queue})
eroute = expand(route(self.mytask.name))
for key, value in self.b_queue.items():
assert eroute[key] == value
assert route('celery.awesome') is None
def test_route_for_task__glob(self):
from re import compile
route = routes.MapRoute([
('proj.tasks.bar*', {'queue': 'routeC'}),
('proj.tasks.*', 'routeA'),
('demoapp.tasks.bar.*', {'exchange': 'routeB'}),
(compile(r'(video|image)\.tasks\..*'), {'queue': 'media'}),
])
assert route('proj.tasks.bar') == {'queue': 'routeC'}
assert route('proj.tasks.bar.baz') == {'queue': 'routeC'}
assert route('proj.tasks.foo') == {'queue': 'routeA'}
assert route('demoapp.tasks.bar.moo') == {'exchange': 'routeB'}
assert route('video.tasks.foo') == {'queue': 'media'}
assert route('image.tasks.foo') == {'queue': 'media'}
assert route('demoapp.foo.bar.moo') is None
def test_expand_route_not_found(self):
expand = E(self.app, self.app.amqp.Queues(
self.app.conf.task_queues, False))
route = routes.MapRoute({'a': {'queue': 'x'}})
with pytest.raises(QueueNotFound):
expand(route('a'))
class test_lookup_route(RouteCase):
def test_init_queues(self):
router = Router(self.app, queues=None)
assert router.queues == {}
def test_lookup_takes_first(self):
set_queues(self.app, foo=self.a_queue, bar=self.b_queue)
R = routes.prepare(({self.mytask.name: {'queue': 'bar'}},
{self.mytask.name: {'queue': 'foo'}}))
router = Router(self.app, R, self.app.amqp.queues)
self.assert_routes_to_queue('bar', router, self.mytask.name)
def test_expands_queue_in_options(self):
set_queues(self.app)
R = routes.prepare(())
router = Router(
self.app, R, self.app.amqp.queues, create_missing=True,
)
# apply_async forwards all arguments, even exchange=None etc,
# so need to make sure it's merged correctly.
route = router.route(
{'queue': 'testq',
'exchange': None,
'routing_key': None,
'immediate': False},
self.mytask.name,
args=[1, 2], kwargs={},
)
assert route['queue'].name == 'testq'
assert route['queue'].exchange == Exchange('testq')
assert route['queue'].routing_key == 'testq'
assert route['immediate'] is False
def test_expand_destination_string(self):
set_queues(self.app, foo=self.a_queue, bar=self.b_queue)
x = Router(self.app, {}, self.app.amqp.queues)
dest = x.expand_destination('foo')
assert dest['queue'].name == 'foo'
def test_expand_destination__Queue(self):
queue = Queue('foo')
x = Router(self.app, {}, self.app.amqp.queues)
dest = x.expand_destination({'queue': queue})
assert dest['queue'] is queue
def test_lookup_paths_traversed(self):
self.simple_queue_setup()
R = routes.prepare((
{'celery.xaza': {'queue': 'bar'}},
{self.mytask.name: {'queue': 'foo'}}
))
router = Router(self.app, R, self.app.amqp.queues)
self.assert_routes_to_queue('foo', router, self.mytask.name)
self.assert_routes_to_default_queue(router, 'celery.poza')
def test_compat_router_class(self):
self.simple_queue_setup()
R = routes.prepare((
TestRouter(),
))
router = Router(self.app, R, self.app.amqp.queues)
self.assert_routes_to_queue('bar', router, 'celery.xaza')
self.assert_routes_to_default_queue(router, 'celery.poza')
def test_router_fun__called_with(self):
self.simple_queue_setup()
step = Mock(spec=['__call__'])
step.return_value = None
R = routes.prepare([step])
router = Router(self.app, R, self.app.amqp.queues)
self.mytask.apply_async((2, 2), {'kw': 3}, router=router, priority=3)
step.assert_called_with(
self.mytask.name, (2, 2), {'kw': 3}, ANY,
task=self.mytask,
)
options = step.call_args[0][3]
assert options['priority'] == 3
def test_compat_router_classes__called_with(self):
self.simple_queue_setup()
step = Mock(spec=['route_for_task'])
step.route_for_task.return_value = None
R = routes.prepare([step])
router = Router(self.app, R, self.app.amqp.queues)
self.mytask.apply_async((2, 2), {'kw': 3}, router=router, priority=3)
step.route_for_task.assert_called_with(
self.mytask.name, (2, 2), {'kw': 3},
)
def simple_queue_setup(self):
set_queues(
self.app, foo=self.a_queue, bar=self.b_queue,
**{self.app.conf.task_default_queue: self.d_queue})
class TestRouter:
def route_for_task(self, task, args, kwargs):
if task == 'celery.xaza':
return 'bar'
class test_prepare:
def test_prepare(self):
o = object()
R = [
{'foo': 'bar'},
qualname(TestRouter),
o,
]
p = routes.prepare(R)
assert isinstance(p[0], routes.MapRoute)
assert isinstance(maybe_evaluate(p[1]), TestRouter)
assert p[2] is o
assert routes.prepare(o) == [o]
def test_prepare_item_is_dict(self):
R = {'foo': 'bar'}
p = routes.prepare(R)
assert isinstance(p[0], routes.MapRoute)
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