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test_request.py
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test_request.py
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# -*- coding: utf-8 -*-
from __future__ import absolute_import
from __future__ import with_statement
import anyjson
import os
import sys
import time
from datetime import datetime, timedelta
from kombu.transport.base import Message
from kombu.utils.encoding import from_utf8, default_encode
from mock import Mock, patch
from nose import SkipTest
from celery import current_app
from celery import states
from celery.app import app_or_default
from celery.concurrency.base import BasePool
from celery.datastructures import ExceptionInfo
from celery.exceptions import (RetryTaskError,
WorkerLostError, InvalidTaskError)
from celery.task.trace import eager_trace_task, TraceInfo, mro_lookup
from celery.result import AsyncResult
from celery.task import task as task_dec
from celery.task.base import Task
from celery.utils import uuid
from celery.worker import job as module
from celery.worker.job import Request, TaskRequest, execute_and_trace
from celery.worker.state import revoked
from celery.tests.utils import Case
scratch = {"ACK": False}
some_kwargs_scratchpad = {}
class test_mro_lookup(Case):
def test_order(self):
class A(object):
pass
class B(A):
pass
class C(B):
pass
class D(C):
@classmethod
def mro(cls):
return ()
A.x = 10
self.assertEqual(mro_lookup(C, "x"), A)
self.assertIsNone(mro_lookup(C, "x", stop=(A, )))
B.x = 10
self.assertEqual(mro_lookup(C, "x"), B)
C.x = 10
self.assertEqual(mro_lookup(C, "x"), C)
self.assertIsNone(mro_lookup(D, "x"))
def jail(task_id, name, args, kwargs):
request = {"id": task_id}
return eager_trace_task(current_app.tasks[name],
task_id, args, kwargs, request=request, eager=False)[0]
def on_ack(*args, **kwargs):
scratch["ACK"] = True
@task_dec(accept_magic_kwargs=False)
def mytask(i, **kwargs):
return i ** i
@task_dec # traverses coverage for decorator without parens
def mytask_no_kwargs(i):
return i ** i
class MyTaskIgnoreResult(Task):
ignore_result = True
def run(self, i):
return i ** i
@task_dec(accept_magic_kwargs=True)
def mytask_some_kwargs(i, logfile):
some_kwargs_scratchpad["logfile"] = logfile
return i ** i
@task_dec(accept_magic_kwargs=False)
def mytask_raising(i):
raise KeyError(i)
class test_default_encode(Case):
def setUp(self):
if sys.version_info >= (3, 0):
raise SkipTest("py3k: not relevant")
def test_jython(self):
prev, sys.platform = sys.platform, "java 1.6.1"
try:
self.assertEqual(default_encode("foo"), "foo")
finally:
sys.platform = prev
def test_cython(self):
prev, sys.platform = sys.platform, "darwin"
gfe, sys.getfilesystemencoding = sys.getfilesystemencoding, \
lambda: "utf-8"
try:
self.assertEqual(default_encode("foo"), "foo")
finally:
sys.platform = prev
sys.getfilesystemencoding = gfe
class test_RetryTaskError(Case):
def test_retry_task_error(self):
try:
raise Exception("foo")
except Exception, exc:
ret = RetryTaskError("Retrying task", exc)
self.assertEqual(ret.exc, exc)
class test_trace_task(Case):
@patch("celery.task.trace._logger")
def test_process_cleanup_fails(self, _logger):
backend = mytask.backend
mytask.backend = Mock()
mytask.backend.process_cleanup = Mock(side_effect=KeyError())
try:
tid = uuid()
ret = jail(tid, mytask.name, [2], {})
self.assertEqual(ret, 4)
mytask.backend.store_result.assert_called_with(tid, 4,
states.SUCCESS)
self.assertIn("Process cleanup failed",
_logger.error.call_args[0][0])
finally:
mytask.backend = backend
def test_process_cleanup_BaseException(self):
backend = mytask.backend
mytask.backend = Mock()
mytask.backend.process_cleanup = Mock(side_effect=SystemExit())
try:
with self.assertRaises(SystemExit):
jail(uuid(), mytask.name, [2], {})
finally:
mytask.backend = backend
def test_execute_jail_success(self):
ret = jail(uuid(), mytask.name, [2], {})
self.assertEqual(ret, 4)
def test_marked_as_started(self):
class Backend(mytask.backend.__class__):
_started = []
def store_result(self, tid, meta, state):
if state == states.STARTED:
self._started.append(tid)
prev, mytask.backend = mytask.backend, Backend()
mytask.track_started = True
try:
tid = uuid()
jail(tid, mytask.name, [2], {})
self.assertIn(tid, Backend._started)
mytask.ignore_result = True
tid = uuid()
jail(tid, mytask.name, [2], {})
self.assertNotIn(tid, Backend._started)
finally:
mytask.backend = prev
mytask.track_started = False
mytask.ignore_result = False
def test_execute_jail_failure(self):
ret = jail(uuid(), mytask_raising.name,
[4], {})
self.assertIsInstance(ret, ExceptionInfo)
self.assertTupleEqual(ret.exception.args, (4, ))
def test_execute_ignore_result(self):
task_id = uuid()
ret = jail(task_id, MyTaskIgnoreResult.name, [4], {})
self.assertEqual(ret, 256)
self.assertFalse(AsyncResult(task_id).ready())
class MockEventDispatcher(object):
def __init__(self):
self.sent = []
self.enabled = True
def send(self, event, **fields):
self.sent.append(event)
class test_TaskRequest(Case):
def test_task_wrapper_repr(self):
tw = TaskRequest(mytask.name, uuid(), [1], {"f": "x"})
self.assertTrue(repr(tw))
@patch("celery.worker.job.kwdict")
def test_kwdict(self, kwdict):
prev, module.NEEDS_KWDICT = module.NEEDS_KWDICT, True
try:
TaskRequest(mytask.name, uuid(), [1], {"f": "x"})
self.assertTrue(kwdict.called)
finally:
module.NEEDS_KWDICT = prev
def test_sets_store_errors(self):
mytask.ignore_result = True
try:
tw = TaskRequest(mytask.name, uuid(), [1], {"f": "x"})
self.assertFalse(tw.store_errors)
mytask.store_errors_even_if_ignored = True
tw = TaskRequest(mytask.name, uuid(), [1], {"f": "x"})
self.assertTrue(tw.store_errors)
finally:
mytask.ignore_result = False
mytask.store_errors_even_if_ignored = False
def test_send_event(self):
tw = TaskRequest(mytask.name, uuid(), [1], {"f": "x"})
tw.eventer = MockEventDispatcher()
tw.send_event("task-frobulated")
self.assertIn("task-frobulated", tw.eventer.sent)
def test_on_retry(self):
tw = TaskRequest(mytask.name, uuid(), [1], {"f": "x"})
tw.eventer = MockEventDispatcher()
try:
raise RetryTaskError("foo", KeyError("moofoobar"))
except:
einfo = ExceptionInfo()
tw.on_failure(einfo)
self.assertIn("task-retried", tw.eventer.sent)
tw._does_info = False
tw.on_failure(einfo)
einfo.internal = True
tw.on_failure(einfo)
def test_compat_properties(self):
tw = TaskRequest(mytask.name, uuid(), [1], {"f": "x"})
self.assertEqual(tw.task_id, tw.id)
self.assertEqual(tw.task_name, tw.name)
tw.task_id = "ID"
self.assertEqual(tw.id, "ID")
tw.task_name = "NAME"
self.assertEqual(tw.name, "NAME")
def test_terminate__task_started(self):
pool = Mock()
tw = TaskRequest(mytask.name, uuid(), [1], {"f": "x"})
tw.time_start = time.time()
tw.worker_pid = 313
tw.terminate(pool, signal="KILL")
pool.terminate_job.assert_called_with(tw.worker_pid, "KILL")
def test_terminate__task_reserved(self):
pool = Mock()
tw = TaskRequest(mytask.name, uuid(), [1], {"f": "x"})
tw.time_start = None
tw.terminate(pool, signal="KILL")
self.assertFalse(pool.terminate_job.call_count)
self.assertTupleEqual(tw._terminate_on_ack, (True, pool, "KILL"))
tw.terminate(pool, signal="KILL")
def test_revoked_expires_expired(self):
tw = TaskRequest(mytask.name, uuid(), [1], {"f": "x"},
expires=datetime.utcnow() - timedelta(days=1))
tw.revoked()
self.assertIn(tw.id, revoked)
self.assertEqual(mytask.backend.get_status(tw.id),
states.REVOKED)
def test_revoked_expires_not_expired(self):
tw = TaskRequest(mytask.name, uuid(), [1], {"f": "x"},
expires=datetime.utcnow() + timedelta(days=1))
tw.revoked()
self.assertNotIn(tw.id, revoked)
self.assertNotEqual(mytask.backend.get_status(tw.id),
states.REVOKED)
def test_revoked_expires_ignore_result(self):
mytask.ignore_result = True
tw = TaskRequest(mytask.name, uuid(), [1], {"f": "x"},
expires=datetime.utcnow() - timedelta(days=1))
try:
tw.revoked()
self.assertIn(tw.id, revoked)
self.assertNotEqual(mytask.backend.get_status(tw.id),
states.REVOKED)
finally:
mytask.ignore_result = False
def test_send_email(self):
app = app_or_default()
old_mail_admins = app.mail_admins
old_enable_mails = mytask.send_error_emails
mail_sent = [False]
def mock_mail_admins(*args, **kwargs):
mail_sent[0] = True
def get_ei():
try:
raise KeyError("moofoobar")
except:
return ExceptionInfo()
app.mail_admins = mock_mail_admins
mytask.send_error_emails = True
try:
tw = TaskRequest(mytask.name, uuid(), [1], {"f": "x"})
einfo = get_ei()
tw.on_failure(einfo)
self.assertTrue(mail_sent[0])
einfo = get_ei()
mail_sent[0] = False
mytask.send_error_emails = False
tw.on_failure(einfo)
self.assertFalse(mail_sent[0])
einfo = get_ei()
mail_sent[0] = False
mytask.send_error_emails = True
mytask.error_whitelist = [KeyError]
tw.on_failure(einfo)
self.assertTrue(mail_sent[0])
einfo = get_ei()
mail_sent[0] = False
mytask.send_error_emails = True
mytask.error_whitelist = [SyntaxError]
tw.on_failure(einfo)
self.assertFalse(mail_sent[0])
finally:
app.mail_admins = old_mail_admins
mytask.send_error_emails = old_enable_mails
mytask.error_whitelist = ()
def test_already_revoked(self):
tw = TaskRequest(mytask.name, uuid(), [1], {"f": "x"})
tw._already_revoked = True
self.assertTrue(tw.revoked())
def test_revoked(self):
tw = TaskRequest(mytask.name, uuid(), [1], {"f": "x"})
revoked.add(tw.id)
self.assertTrue(tw.revoked())
self.assertTrue(tw._already_revoked)
self.assertTrue(tw.acknowledged)
def test_execute_does_not_execute_revoked(self):
tw = TaskRequest(mytask.name, uuid(), [1], {"f": "x"})
revoked.add(tw.id)
tw.execute()
def test_execute_acks_late(self):
mytask_raising.acks_late = True
tw = TaskRequest(mytask_raising.name, uuid(), [1])
try:
tw.execute()
self.assertTrue(tw.acknowledged)
tw.task.accept_magic_kwargs = False
tw.execute()
finally:
mytask_raising.acks_late = False
def test_execute_using_pool_does_not_execute_revoked(self):
tw = TaskRequest(mytask.name, uuid(), [1], {"f": "x"})
revoked.add(tw.id)
tw.execute_using_pool(None)
def test_on_accepted_acks_early(self):
tw = TaskRequest(mytask.name, uuid(), [1], {"f": "x"})
tw.on_accepted(pid=os.getpid(), time_accepted=time.time())
self.assertTrue(tw.acknowledged)
tw._does_debug = False
tw.on_accepted(pid=os.getpid(), time_accepted=time.time())
def test_on_accepted_acks_late(self):
tw = TaskRequest(mytask.name, uuid(), [1], {"f": "x"})
mytask.acks_late = True
try:
tw.on_accepted(pid=os.getpid(), time_accepted=time.time())
self.assertFalse(tw.acknowledged)
finally:
mytask.acks_late = False
def test_on_accepted_terminates(self):
tw = TaskRequest(mytask.name, uuid(), [1], {"f": "x"})
pool = Mock()
tw.terminate(pool, signal="KILL")
self.assertFalse(pool.terminate_job.call_count)
tw.on_accepted(pid=314, time_accepted=time.time())
pool.terminate_job.assert_called_with(314, "KILL")
def test_on_success_acks_early(self):
tw = TaskRequest(mytask.name, uuid(), [1], {"f": "x"})
tw.time_start = 1
tw.on_success(42)
tw._does_info = False
tw.on_success(42)
self.assertFalse(tw.acknowledged)
def test_on_success_BaseException(self):
tw = TaskRequest(mytask.name, uuid(), [1], {"f": "x"})
tw.time_start = 1
with self.assertRaises(SystemExit):
try:
raise SystemExit()
except SystemExit:
tw.on_success(ExceptionInfo())
else:
assert False
def test_on_success_eventer(self):
tw = TaskRequest(mytask.name, uuid(), [1], {"f": "x"})
tw.time_start = 1
tw.eventer = Mock()
tw.send_event = Mock()
tw.on_success(42)
self.assertTrue(tw.send_event.called)
def test_on_success_when_failure(self):
tw = TaskRequest(mytask.name, uuid(), [1], {"f": "x"})
tw.time_start = 1
tw.on_failure = Mock()
try:
raise KeyError("foo")
except Exception:
tw.on_success(ExceptionInfo())
self.assertTrue(tw.on_failure.called)
def test_on_success_acks_late(self):
tw = TaskRequest(mytask.name, uuid(), [1], {"f": "x"})
tw.time_start = 1
mytask.acks_late = True
try:
tw.on_success(42)
self.assertTrue(tw.acknowledged)
finally:
mytask.acks_late = False
def test_on_failure_WorkerLostError(self):
def get_ei():
try:
raise WorkerLostError("do re mi")
except WorkerLostError:
return ExceptionInfo()
tw = TaskRequest(mytask.name, uuid(), [1], {"f": "x"})
exc_info = get_ei()
tw.on_failure(exc_info)
self.assertEqual(mytask.backend.get_status(tw.id),
states.FAILURE)
mytask.ignore_result = True
try:
exc_info = get_ei()
tw = TaskRequest(mytask.name, uuid(), [1], {"f": "x"})
tw.on_failure(exc_info)
self.assertEqual(mytask.backend.get_status(tw.id),
states.PENDING)
finally:
mytask.ignore_result = False
def test_on_failure_acks_late(self):
tw = TaskRequest(mytask.name, uuid(), [1], {"f": "x"})
tw.time_start = 1
mytask.acks_late = True
try:
try:
raise KeyError("foo")
except KeyError:
exc_info = ExceptionInfo()
tw.on_failure(exc_info)
self.assertTrue(tw.acknowledged)
finally:
mytask.acks_late = False
def test_from_message_invalid_kwargs(self):
body = dict(task=mytask.name, id=1, args=(), kwargs="foo")
with self.assertRaises(InvalidTaskError):
TaskRequest.from_message(None, body)
@patch("celery.worker.job.error")
@patch("celery.worker.job.warn")
def test_on_timeout(self, warn, error):
tw = TaskRequest(mytask.name, uuid(), [1], {"f": "x"})
tw.on_timeout(soft=True, timeout=1337)
self.assertIn("Soft time limit", warn.call_args[0][0])
tw.on_timeout(soft=False, timeout=1337)
self.assertIn("Hard time limit", error.call_args[0][0])
self.assertEqual(mytask.backend.get_status(tw.id),
states.FAILURE)
mytask.ignore_result = True
try:
tw = TaskRequest(mytask.name, uuid(), [1], {"f": "x"})
tw.on_timeout(soft=True, timeout=1336)
self.assertEqual(mytask.backend.get_status(tw.id),
states.PENDING)
finally:
mytask.ignore_result = False
def test_execute_and_trace(self):
res = execute_and_trace(mytask.name, uuid(), [4], {})
self.assertEqual(res, 4 ** 4)
def test_execute_safe_catches_exception(self):
def _error_exec(self, *args, **kwargs):
raise KeyError("baz")
@task_dec(request=None)
def raising():
raise KeyError("baz")
with self.assertWarnsRegex(RuntimeWarning,
r'Exception raised outside'):
res = execute_and_trace(raising.name, uuid(),
[], {})
self.assertIsInstance(res, ExceptionInfo)
def test_worker_task_trace_handle_retry(self):
from celery.exceptions import RetryTaskError
tid = uuid()
mytask.request.update({"id": tid})
try:
raise ValueError("foo")
except Exception, exc:
try:
raise RetryTaskError(str(exc), exc=exc)
except RetryTaskError, exc:
w = TraceInfo(states.RETRY, exc)
w.handle_retry(mytask, store_errors=False)
self.assertEqual(mytask.backend.get_status(tid),
states.PENDING)
w.handle_retry(mytask, store_errors=True)
self.assertEqual(mytask.backend.get_status(tid),
states.RETRY)
finally:
mytask.request.clear()
def test_worker_task_trace_handle_failure(self):
tid = uuid()
mytask.request.update({"id": tid})
try:
try:
raise ValueError("foo")
except Exception, exc:
w = TraceInfo(states.FAILURE, exc)
w.handle_failure(mytask, store_errors=False)
self.assertEqual(mytask.backend.get_status(tid),
states.PENDING)
w.handle_failure(mytask, store_errors=True)
self.assertEqual(mytask.backend.get_status(tid),
states.FAILURE)
finally:
mytask.request.clear()
def test_task_wrapper_mail_attrs(self):
tw = TaskRequest(mytask.name, uuid(), [], {})
x = tw.success_msg % {"name": tw.name,
"id": tw.id,
"return_value": 10,
"runtime": 0.3641}
self.assertTrue(x)
x = tw.error_msg % {"name": tw.name,
"id": tw.id,
"exc": "FOOBARBAZ",
"traceback": "foobarbaz"}
self.assertTrue(x)
def test_from_message(self):
us = u"æØåveéðƒeæ"
body = {"task": mytask.name, "id": uuid(),
"args": [2], "kwargs": {us: "bar"}}
m = Message(None, body=anyjson.dumps(body), backend="foo",
content_type="application/json",
content_encoding="utf-8")
tw = TaskRequest.from_message(m, m.decode())
self.assertIsInstance(tw, Request)
self.assertEqual(tw.name, body["task"])
self.assertEqual(tw.id, body["id"])
self.assertEqual(tw.args, body["args"])
us = from_utf8(us)
if sys.version_info < (2, 6):
self.assertEqual(tw.kwargs.keys()[0], us)
self.assertIsInstance(tw.kwargs.keys()[0], str)
def test_from_message_empty_args(self):
body = {"task": mytask.name, "id": uuid()}
m = Message(None, body=anyjson.dumps(body), backend="foo",
content_type="application/json",
content_encoding="utf-8")
tw = TaskRequest.from_message(m, m.decode())
self.assertIsInstance(tw, Request)
self.assertEquals(tw.args, [])
self.assertEquals(tw.kwargs, {})
def test_from_message_missing_required_fields(self):
body = {}
m = Message(None, body=anyjson.dumps(body), backend="foo",
content_type="application/json",
content_encoding="utf-8")
with self.assertRaises(KeyError):
TaskRequest.from_message(m, m.decode())
def test_from_message_nonexistant_task(self):
body = {"task": "cu.mytask.doesnotexist", "id": uuid(),
"args": [2], "kwargs": {u"æØåveéðƒeæ": "bar"}}
m = Message(None, body=anyjson.dumps(body), backend="foo",
content_type="application/json",
content_encoding="utf-8")
with self.assertRaises(KeyError):
TaskRequest.from_message(m, m.decode())
def test_execute(self):
tid = uuid()
tw = TaskRequest(mytask.name, tid, [4], {"f": "x"})
self.assertEqual(tw.execute(), 256)
meta = mytask.backend.get_task_meta(tid)
self.assertEqual(meta["result"], 256)
self.assertEqual(meta["status"], states.SUCCESS)
def test_execute_success_no_kwargs(self):
tid = uuid()
tw = TaskRequest(mytask_no_kwargs.name, tid, [4], {})
self.assertEqual(tw.execute(), 256)
meta = mytask_no_kwargs.backend.get_task_meta(tid)
self.assertEqual(meta["result"], 256)
self.assertEqual(meta["status"], states.SUCCESS)
def test_execute_success_some_kwargs(self):
tid = uuid()
tw = TaskRequest(mytask_some_kwargs.name, tid, [4], {})
self.assertEqual(tw.execute(logfile="foobaz.log"), 256)
meta = mytask_some_kwargs.backend.get_task_meta(tid)
self.assertEqual(some_kwargs_scratchpad.get("logfile"), "foobaz.log")
self.assertEqual(meta["result"], 256)
self.assertEqual(meta["status"], states.SUCCESS)
def test_execute_ack(self):
tid = uuid()
tw = TaskRequest(mytask.name, tid, [4], {"f": "x"},
on_ack=on_ack)
self.assertEqual(tw.execute(), 256)
meta = mytask.backend.get_task_meta(tid)
self.assertTrue(scratch["ACK"])
self.assertEqual(meta["result"], 256)
self.assertEqual(meta["status"], states.SUCCESS)
def test_execute_fail(self):
tid = uuid()
tw = TaskRequest(mytask_raising.name, tid, [4])
self.assertIsInstance(tw.execute(), ExceptionInfo)
meta = mytask_raising.backend.get_task_meta(tid)
self.assertEqual(meta["status"], states.FAILURE)
self.assertIsInstance(meta["result"], KeyError)
def test_execute_using_pool(self):
tid = uuid()
tw = TaskRequest(mytask.name, tid, [4], {"f": "x"})
class MockPool(BasePool):
target = None
args = None
kwargs = None
def __init__(self, *args, **kwargs):
pass
def apply_async(self, target, args=None, kwargs=None,
*margs, **mkwargs):
self.target = target
self.args = args
self.kwargs = kwargs
p = MockPool()
tw.execute_using_pool(p)
self.assertTrue(p.target)
self.assertEqual(p.args[0], mytask.name)
self.assertEqual(p.args[1], tid)
self.assertEqual(p.args[2], [4])
self.assertIn("f", p.args[3])
self.assertIn([4], p.args)
tw.task.accept_magic_kwargs = False
tw.execute_using_pool(p)
def test_default_kwargs(self):
tid = uuid()
tw = TaskRequest(mytask.name, tid, [4], {"f": "x"})
self.assertDictEqual(
tw.extend_with_default_kwargs(10, "some_logfile"), {
"f": "x",
"logfile": "some_logfile",
"loglevel": 10,
"task_id": tw.id,
"task_retries": 0,
"task_is_eager": False,
"delivery_info": {"exchange": None, "routing_key": None},
"task_name": tw.name})
@patch("celery.worker.job.logger")
def _test_on_failure(self, exception, logger):
app = app_or_default()
tid = uuid()
tw = TaskRequest(mytask.name, tid, [4], {"f": "x"})
try:
raise exception
except Exception:
exc_info = ExceptionInfo()
app.conf.CELERY_SEND_TASK_ERROR_EMAILS = True
try:
tw.on_failure(exc_info)
self.assertTrue(logger.log.called)
context = logger.log.call_args[0][2]
self.assertEqual(mytask.name, context["name"])
self.assertIn(tid, context["id"])
finally:
app.conf.CELERY_SEND_TASK_ERROR_EMAILS = False
def test_on_failure(self):
self._test_on_failure(Exception("Inside unit tests"))
def test_on_failure_unicode_exception(self):
self._test_on_failure(Exception(u"Бобры атакуют"))
def test_on_failure_utf8_exception(self):
self._test_on_failure(Exception(
from_utf8(u"Бобры атакуют")))