forked from celery/celery
/
test_events_state.py
288 lines (232 loc) · 9.02 KB
/
test_events_state.py
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from time import time
import unittest2 as unittest
from itertools import count
from celery import states
from celery.events import Event
from celery.events.state import State, Worker, Task, HEARTBEAT_EXPIRE
from celery.utils import gen_unique_id
class replay(object):
def __init__(self, state):
self.state = state
self.rewind()
def __iter__(self):
return self
def next(self):
try:
self.state.event(self.events[self.position()])
except IndexError:
raise StopIteration()
def rewind(self):
self.position = count(0).next
return self
def play(self):
for _ in self:
pass
class ev_worker_online_offline(replay):
events = [
Event("worker-online", hostname="utest1"),
Event("worker-offline", hostname="utest1"),
]
class ev_worker_heartbeats(replay):
events = [
Event("worker-heartbeat", hostname="utest1",
timestamp=time() - HEARTBEAT_EXPIRE * 2),
Event("worker-heartbeat", hostname="utest1"),
]
class ev_task_states(replay):
uuid = gen_unique_id()
events = [
Event("task-received", uuid=uuid, name="task1",
args="(2, 2)", kwargs="{'foo': 'bar'}",
retries=0, eta=None, hostname="utest1"),
Event("task-started", uuid=uuid, hostname="utest1"),
Event("task-revoked", uuid=uuid, hostname="utest1"),
Event("task-retried", uuid=uuid, exception="KeyError('bar')",
traceback="line 2 at main", hostname="utest1"),
Event("task-failed", uuid=uuid, exception="KeyError('foo')",
traceback="line 1 at main", hostname="utest1"),
Event("task-succeeded", uuid=uuid, result="4",
runtime=0.1234, hostname="utest1"),
]
class ev_snapshot(replay):
events = [
Event("worker-online", hostname="utest1"),
Event("worker-online", hostname="utest2"),
Event("worker-online", hostname="utest3"),
]
for i in range(20):
worker = not i % 2 and "utest2" or "utest1"
type = not i % 2 and "task2" or "task1"
events.append(Event("task-received", name=type,
uuid=gen_unique_id(), hostname=worker))
class test_Worker(unittest.TestCase):
def test_survives_missing_timestamp(self):
worker = Worker(hostname="foo")
worker.on_heartbeat(timestamp=None)
self.assertEqual(worker.heartbeats, [])
class test_Task(unittest.TestCase):
def test_info(self):
task = Task(uuid="abcdefg",
name="tasks.add",
args="(2, 2)",
kwargs="{}",
retries=2,
result=42,
eta=1,
runtime=0.0001,
expires=1,
exception=1,
received=time() - 10,
started=time() - 8,
succeeded=time())
self.assertItemsEqual(list(task._info_fields),
task.info().keys())
self.assertItemsEqual(list(task._info_fields + ("received", )),
task.info(extra=("received", )))
self.assertItemsEqual(["args", "kwargs"],
task.info(["args", "kwargs"]).keys())
def test_ready(self):
task = Task(uuid="abcdefg",
name="tasks.add")
task.on_received(timestamp=time())
self.assertFalse(task.ready)
task.on_succeeded(timestamp=time())
self.assertTrue(task.ready)
class test_State(unittest.TestCase):
def test_repr(self):
self.assertTrue(repr(State()))
def test_worker_online_offline(self):
r = ev_worker_online_offline(State())
r.next()
self.assertTrue(r.state.alive_workers())
self.assertTrue(r.state.workers["utest1"].alive)
r.play()
self.assertFalse(r.state.alive_workers())
self.assertFalse(r.state.workers["utest1"].alive)
def test_worker_heartbeat_expire(self):
r = ev_worker_heartbeats(State())
r.next()
self.assertFalse(r.state.alive_workers())
self.assertFalse(r.state.workers["utest1"].alive)
r.play()
self.assertTrue(r.state.alive_workers())
self.assertTrue(r.state.workers["utest1"].alive)
def test_task_states(self):
r = ev_task_states(State())
# RECEIVED
r.next()
self.assertTrue(r.uuid in r.state.tasks)
task = r.state.tasks[r.uuid]
self.assertEqual(task.state, states.RECEIVED)
self.assertTrue(task.received)
self.assertEqual(task.timestamp, task.received)
self.assertEqual(task.worker.hostname, "utest1")
# STARTED
r.next()
self.assertTrue(r.state.workers["utest1"].alive,
"any task event adds worker heartbeat")
self.assertEqual(task.state, states.STARTED)
self.assertTrue(task.started)
self.assertEqual(task.timestamp, task.started)
self.assertEqual(task.worker.hostname, "utest1")
# REVOKED
r.next()
self.assertEqual(task.state, states.REVOKED)
self.assertTrue(task.revoked)
self.assertEqual(task.timestamp, task.revoked)
self.assertEqual(task.worker.hostname, "utest1")
# RETRY
r.next()
self.assertEqual(task.state, states.RETRY)
self.assertTrue(task.retried)
self.assertEqual(task.timestamp, task.retried)
self.assertEqual(task.worker.hostname, "utest1")
self.assertEqual(task.exception, "KeyError('bar')")
self.assertEqual(task.traceback, "line 2 at main")
# FAILURE
r.next()
self.assertEqual(task.state, states.FAILURE)
self.assertTrue(task.failed)
self.assertEqual(task.timestamp, task.failed)
self.assertEqual(task.worker.hostname, "utest1")
self.assertEqual(task.exception, "KeyError('foo')")
self.assertEqual(task.traceback, "line 1 at main")
# SUCCESS
r.next()
self.assertEqual(task.state, states.SUCCESS)
self.assertTrue(task.succeeded)
self.assertEqual(task.timestamp, task.succeeded)
self.assertEqual(task.worker.hostname, "utest1")
self.assertEqual(task.result, "4")
self.assertEqual(task.runtime, 0.1234)
def assertStateEmpty(self, state):
self.assertFalse(state.tasks)
self.assertFalse(state.workers)
self.assertFalse(state.event_count)
self.assertFalse(state.task_count)
def assertState(self, state):
self.assertTrue(state.tasks)
self.assertTrue(state.workers)
self.assertTrue(state.event_count)
self.assertTrue(state.task_count)
def test_freeze_while(self):
s = State()
r = ev_snapshot(s)
r.play()
def work():
pass
s.freeze_while(work, clear_after=True)
self.assertFalse(s.event_count)
def test_clear(self):
r = ev_snapshot(State())
r.play()
self.assertTrue(r.state.event_count)
self.assertTrue(r.state.workers)
self.assertTrue(r.state.tasks)
self.assertTrue(r.state.task_count)
r.state.clear()
self.assertFalse(r.state.event_count)
self.assertFalse(r.state.workers)
self.assertTrue(r.state.tasks)
self.assertFalse(r.state.task_count)
r.state.clear(False)
self.assertFalse(r.state.tasks)
def test_task_types(self):
r = ev_snapshot(State())
r.play()
self.assertItemsEqual(r.state.task_types(), ["task1", "task2"])
def test_tasks_by_timestamp(self):
r = ev_snapshot(State())
r.play()
self.assertEqual(len(r.state.tasks_by_timestamp()), 20)
def test_tasks_by_type(self):
r = ev_snapshot(State())
r.play()
self.assertEqual(len(r.state.tasks_by_type("task1")), 10)
self.assertEqual(len(r.state.tasks_by_type("task2")), 10)
def test_alive_workers(self):
r = ev_snapshot(State())
r.play()
self.assertEqual(len(r.state.alive_workers()), 3)
def test_tasks_by_worker(self):
r = ev_snapshot(State())
r.play()
self.assertEqual(len(r.state.tasks_by_worker("utest1")), 10)
self.assertEqual(len(r.state.tasks_by_worker("utest2")), 10)
def test_survives_unknown_worker_event(self):
s = State()
s.worker_event("worker-unknown-event-xxx", {"foo": "bar"})
s.worker_event("worker-unknown-event-xxx", {"hostname": "xxx",
"foo": "bar"})
def test_survives_unknown_task_event(self):
s = State()
s.task_event("task-unknown-event-xxx", {"foo": "bar",
"uuid": "x",
"hostname": "y"})
def test_callback(self):
scratch = {}
def callback(state, event):
scratch["recv"] = True
s = State(callback=callback)
s.event({"type": "worker-online"})
self.assertTrue(scratch.get("recv"))