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253 lines
8.2 KiB
Python
253 lines
8.2 KiB
Python
import os
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from time import sleep
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from tests import RQTestCase, slow
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from tests.fixtures import say_hello, div_by_zero, do_nothing, create_file, \
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create_file_after_timeout
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from tests.helpers import strip_milliseconds
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from rq import Queue, Worker, get_failed_queue
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from rq.job import Job, Status
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class TestWorker(RQTestCase):
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def test_create_worker(self):
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"""Worker creation."""
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fooq, barq = Queue('foo'), Queue('bar')
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w = Worker([fooq, barq])
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self.assertEquals(w.queues, [fooq, barq])
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def test_work_and_quit(self):
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"""Worker processes work, then quits."""
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fooq, barq = Queue('foo'), Queue('bar')
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w = Worker([fooq, barq])
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self.assertEquals(w.work(burst=True), False,
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'Did not expect any work on the queue.')
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fooq.enqueue(say_hello, name='Frank')
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self.assertEquals(w.work(burst=True), True,
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'Expected at least some work done.')
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def test_worker_ttl(self):
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"""Worker ttl."""
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w = Worker([])
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w.register_birth() # ugly: our test should only call public APIs
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[worker_key] = self.testconn.smembers(Worker.redis_workers_keys)
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self.assertIsNotNone(self.testconn.ttl(worker_key))
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w.register_death()
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def test_work_via_string_argument(self):
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"""Worker processes work fed via string arguments."""
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q = Queue('foo')
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w = Worker([q])
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job = q.enqueue('tests.fixtures.say_hello', name='Frank')
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self.assertEquals(w.work(burst=True), True,
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'Expected at least some work done.')
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self.assertEquals(job.result, 'Hi there, Frank!')
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def test_work_is_unreadable(self):
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"""Unreadable jobs are put on the failed queue."""
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q = Queue()
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failed_q = get_failed_queue()
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self.assertEquals(failed_q.count, 0)
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self.assertEquals(q.count, 0)
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# NOTE: We have to fake this enqueueing for this test case.
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# What we're simulating here is a call to a function that is not
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# importable from the worker process.
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job = Job.create(func=div_by_zero, args=(3,))
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job.save()
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data = self.testconn.hget(job.key, 'data')
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invalid_data = data.replace('div_by_zero', 'nonexisting_job')
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assert data != invalid_data
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self.testconn.hset(job.key, 'data', invalid_data)
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# We use the low-level internal function to enqueue any data (bypassing
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# validity checks)
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q.push_job_id(job.id)
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self.assertEquals(q.count, 1)
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# All set, we're going to process it
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w = Worker([q])
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w.work(burst=True) # should silently pass
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self.assertEquals(q.count, 0)
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self.assertEquals(failed_q.count, 1)
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def test_work_fails(self):
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"""Failing jobs are put on the failed queue."""
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q = Queue()
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failed_q = get_failed_queue()
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# Preconditions
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self.assertEquals(failed_q.count, 0)
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self.assertEquals(q.count, 0)
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# Action
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job = q.enqueue(div_by_zero)
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self.assertEquals(q.count, 1)
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# keep for later
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enqueued_at_date = strip_milliseconds(job.enqueued_at)
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w = Worker([q])
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w.work(burst=True) # should silently pass
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# Postconditions
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self.assertEquals(q.count, 0)
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self.assertEquals(failed_q.count, 1)
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# Check the job
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job = Job.fetch(job.id)
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self.assertEquals(job.origin, q.name)
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# Should be the original enqueued_at date, not the date of enqueueing
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# to the failed queue
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self.assertEquals(job.enqueued_at, enqueued_at_date)
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self.assertIsNotNone(job.exc_info) # should contain exc_info
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def test_custom_exc_handling(self):
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"""Custom exception handling."""
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def black_hole(job, *exc_info):
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# Don't fall through to default behaviour (moving to failed queue)
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return False
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q = Queue()
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failed_q = get_failed_queue()
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# Preconditions
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self.assertEquals(failed_q.count, 0)
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self.assertEquals(q.count, 0)
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# Action
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job = q.enqueue(div_by_zero)
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self.assertEquals(q.count, 1)
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w = Worker([q], exc_handler=black_hole)
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w.work(burst=True) # should silently pass
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# Postconditions
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self.assertEquals(q.count, 0)
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self.assertEquals(failed_q.count, 0)
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# Check the job
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job = Job.fetch(job.id)
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self.assertEquals(job.is_failed, True)
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def test_cancelled_jobs_arent_executed(self): # noqa
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"""Cancelling jobs."""
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SENTINEL_FILE = '/tmp/rq-tests.txt'
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try:
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# Remove the sentinel if it is leftover from a previous test run
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os.remove(SENTINEL_FILE)
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except OSError as e:
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if e.errno != 2:
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raise
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q = Queue()
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job = q.enqueue(create_file, SENTINEL_FILE)
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# Here, we cancel the job, so the sentinel file may not be created
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assert q.count == 1
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job.cancel()
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assert q.count == 1
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w = Worker([q])
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w.work(burst=True)
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assert q.count == 0
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# Should not have created evidence of execution
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self.assertEquals(os.path.exists(SENTINEL_FILE), False)
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@slow # noqa
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def test_timeouts(self):
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"""Worker kills jobs after timeout."""
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sentinel_file = '/tmp/.rq_sentinel'
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q = Queue()
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w = Worker([q])
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# Put it on the queue with a timeout value
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res = q.enqueue(
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create_file_after_timeout,
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args=(sentinel_file, 4),
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timeout=1)
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try:
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os.unlink(sentinel_file)
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except OSError as e:
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if e.errno == 2:
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pass
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self.assertEquals(os.path.exists(sentinel_file), False)
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w.work(burst=True)
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self.assertEquals(os.path.exists(sentinel_file), False)
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# TODO: Having to do the manual refresh() here is really ugly!
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res.refresh()
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self.assertIn('JobTimeoutException', res.exc_info)
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def test_worker_sets_result_ttl(self):
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"""Ensure that Worker properly sets result_ttl for individual jobs."""
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q = Queue()
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job = q.enqueue(say_hello, args=('Frank',), result_ttl=10)
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w = Worker([q])
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w.work(burst=True)
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self.assertNotEqual(self.testconn._ttl(job.key), 0)
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# Job with -1 result_ttl don't expire
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job = q.enqueue(say_hello, args=('Frank',), result_ttl=-1)
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w = Worker([q])
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w.work(burst=True)
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self.assertEqual(self.testconn._ttl(job.key), -1)
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# Job with result_ttl = 0 gets deleted immediately
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job = q.enqueue(say_hello, args=('Frank',), result_ttl=0)
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w = Worker([q])
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w.work(burst=True)
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self.assertEqual(self.testconn.get(job.key), None)
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def test_worker_sets_job_status(self):
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"""Ensure that worker correctly sets job status."""
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q = Queue()
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w = Worker([q])
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job = q.enqueue(say_hello)
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self.assertEqual(job.status, 'queued')
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self.assertEqual(job.is_queued, True)
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self.assertEqual(job.is_finished, False)
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self.assertEqual(job.is_failed, False)
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w.work(burst=True)
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job = Job.fetch(job.id)
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self.assertEqual(job.status, 'finished')
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self.assertEqual(job.is_queued, False)
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self.assertEqual(job.is_finished, True)
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self.assertEqual(job.is_failed, False)
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# Failed jobs should set status to "failed"
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job = q.enqueue(div_by_zero, args=(1,))
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w.work(burst=True)
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job = Job.fetch(job.id)
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self.assertEqual(job.status, 'failed')
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self.assertEqual(job.is_queued, False)
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self.assertEqual(job.is_finished, False)
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self.assertEqual(job.is_failed, True)
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def test_job_dependency(self):
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"""Waitlisted jobs are enqueued only if their parents don't fail"""
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q = Queue()
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w = Worker([q])
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parent_job = q.enqueue(say_hello)
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job = q.enqueue_call(say_hello, after=parent_job)
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w.work(burst=True)
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job = Job.fetch(job.id)
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self.assertEqual(job.status, 'finished')
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parent_job = q.enqueue(div_by_zero)
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job = q.enqueue_call(say_hello, after=parent_job)
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w.work(burst=True)
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job = Job.fetch(job.id)
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self.assertNotEqual(job.status, 'finished')
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