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from tests import RQTestCase
from rq import Queue, Worker
from rq.worker_registration import (clean_worker_registry, get_keys, register,
unregister, REDIS_WORKER_KEYS,
WORKERS_BY_QUEUE_KEY)
class TestWorkerRegistry(RQTestCase):
def test_worker_registration(self):
"""Ensure worker.key is correctly set in Redis."""
foo_queue = Queue(name='foo')
bar_queue = Queue(name='bar')
worker = Worker([foo_queue, bar_queue])
register(worker)
redis = worker.connection
self.assertTrue(redis.sismember(worker.redis_workers_keys, worker.key))
self.assertEqual(Worker.count(connection=redis), 1)
self.assertTrue(
redis.sismember(WORKERS_BY_QUEUE_KEY % foo_queue.name, worker.key)
)
self.assertEqual(Worker.count(queue=foo_queue), 1)
self.assertTrue(
redis.sismember(WORKERS_BY_QUEUE_KEY % bar_queue.name, worker.key)
)
self.assertEqual(Worker.count(queue=bar_queue), 1)
unregister(worker)
self.assertFalse(redis.sismember(worker.redis_workers_keys, worker.key))
self.assertFalse(
redis.sismember(WORKERS_BY_QUEUE_KEY % foo_queue.name, worker.key)
)
self.assertFalse(
redis.sismember(WORKERS_BY_QUEUE_KEY % bar_queue.name, worker.key)
)
def test_get_keys_by_queue(self):
"""get_keys_by_queue only returns active workers for that queue"""
foo_queue = Queue(name='foo')
bar_queue = Queue(name='bar')
baz_queue = Queue(name='baz')
worker1 = Worker([foo_queue, bar_queue])
worker2 = Worker([foo_queue])
worker3 = Worker([baz_queue])
self.assertEqual(set(), get_keys(foo_queue))
register(worker1)
register(worker2)
register(worker3)
# get_keys(queue) will return worker keys for that queue
self.assertEqual(
set([worker1.key, worker2.key]),
get_keys(foo_queue)
)
self.assertEqual(set([worker1.key]), get_keys(bar_queue))
# get_keys(connection=connection) will return all worker keys
self.assertEqual(
set([worker1.key, worker2.key, worker3.key]),
get_keys(connection=worker1.connection)
)
# Calling get_keys without arguments raises an exception
self.assertRaises(ValueError, get_keys)
unregister(worker1)
unregister(worker2)
unregister(worker3)
def test_clean_registry(self):
"""clean_registry removes worker keys that don't exist in Redis"""
queue = Queue(name='foo')
worker = Worker([queue])
register(worker)
redis = worker.connection
self.assertTrue(redis.sismember(worker.redis_workers_keys, worker.key))
self.assertTrue(redis.sismember(REDIS_WORKER_KEYS, worker.key))
clean_worker_registry(queue)
self.assertFalse(redis.sismember(worker.redis_workers_keys, worker.key))
self.assertFalse(redis.sismember(REDIS_WORKER_KEYS, worker.key))
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