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edx-platform
Commit 01611c33 by Brian Wilson
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Refactor instructor_task tests, and add handling for general errors in bulk_email subtasks.

parent 2f4774f4
Showing with 172 additions and 119 deletions
lms/djangoapps/bulk_email/tasks.py
......@@ -166,7 +166,7 @@ def perform_delegate_email_batches(entry_id, course_id, task_input, action_name)
to_list = recipient_sublist[i * chunk:i * chunk + chunk]
subtask_id = str(uuid4())
subtask_id_list.append(subtask_id)
subtask_progress = _course_email_result(None, 0, 0, 0)
subtask_progress = update_subtask_result(None, 0, 0, 0)
task_list.append(send_course_email.subtask((
entry_id,
email_id,
......@@ -259,14 +259,14 @@ def _update_subtask_status(entry_id, current_task_id, status, subtask_result):
log.info("Task output updated to %s for email subtask %s of instructor task %d",
entry.task_output, current_task_id, entry_id)
# TODO: temporary -- switch to debug
# TODO: temporary -- switch to debug once working
log.info("about to save....")
entry.save()
except:
log.exception("Unexpected error while updating InstructorTask.")
transaction.rollback()
else:
# TODO: temporary -- switch to debug
# TODO: temporary -- switch to debug once working
log.info("about to commit....")
transaction.commit()
......@@ -289,40 +289,69 @@ def send_course_email(entry_id, email_id, to_list, global_email_context, subtask
current_task_id = _get_current_task().request.id
retry_index = _get_current_task().request.retries
log.info("Preparing to send email as subtask %s for instructor task %d",
current_task_id, entry_id)
log.info("Preparing to send email as subtask %s for instructor task %d, retry %d",
current_task_id, entry_id, retry_index)
try:
course_title = global_email_context['course_title']
course_email_result_value = None
send_exception = None
with dog_stats_api.timer('course_email.single_task.time.overall', tags=[_statsd_tag(course_title)]):
course_email_result_value = _send_course_email(email_id, to_list, global_email_context, subtask_progress, retry_index)
# Assume that if we get here without a raise, the task was successful.
# Update the InstructorTask object that is storing its progress.
_update_subtask_status(entry_id, current_task_id, SUCCESS, course_email_result_value)
course_email_result_value, send_exception = _send_course_email(
current_task_id,
email_id,
to_list,
global_email_context,
subtask_progress,
retry_index,
)
if send_exception is None:
# Update the InstructorTask object that is storing its progress.
_update_subtask_status(entry_id, current_task_id, SUCCESS, course_email_result_value)
else:
log.error("background task (%s) failed: %s", current_task_id, send_exception)
_update_subtask_status(entry_id, current_task_id, FAILURE, course_email_result_value)
raise send_exception
except Exception:
# try to write out the failure to the entry before failing
_, exception, traceback = exc_info()
traceback_string = format_exc(traceback) if traceback is not None else ''
log.warning("background task (%s) failed: %s %s", current_task_id, exception, traceback_string)
log.error("background task (%s) failed: %s %s", current_task_id, exception, traceback_string)
_update_subtask_status(entry_id, current_task_id, FAILURE, subtask_progress)
raise
return course_email_result_value
def _send_course_email(email_id, to_list, global_email_context, subtask_progress, retry_index):
def _send_course_email(task_id, email_id, to_list, global_email_context, subtask_progress, retry_index):
"""
Performs the email sending task.
Returns a tuple of two values:
* First value is a dict which represents current progress. Keys are:
'attempted': number of emails attempted
'succeeded': number of emails succeeded
'skipped': number of emails skipped (due to optout)
'failed': number of emails not sent because of some failure
* Second value is an exception returned by the innards of the method, indicating a fatal error.
In this case, the number of recipients that were not sent have already been added to the
'failed' count above.
"""
throttle = retry_index > 0
num_optout = 0
num_sent = 0
num_error = 0
try:
course_email = CourseEmail.objects.get(id=email_id)
except CourseEmail.DoesNotExist:
log.exception("Could not find email id:{} to send.".format(email_id))
raise
except CourseEmail.DoesNotExist as exc:
log.exception("Task %s: could not find email id:%s to send.", task_id, email_id)
num_error += len(to_list)
return update_subtask_result(subtask_progress, num_sent, num_error, num_optout), exc
# exclude optouts (if not a retry):
# Note that we don't have to do the optout logic at all if this is a retry,
......@@ -330,7 +359,6 @@ def _send_course_email(email_id, to_list, global_email_context, subtask_progress
# attempt. Anyone on the to_list on a retry has already passed the filter
# that existed at that time, and we don't need to keep checking for changes
# in the Optout list.
num_optout = 0
if retry_index == 0:
optouts = (Optout.objects.filter(course_id=course_email.course_id,
user__in=[i['pk'] for i in to_list])
......@@ -350,8 +378,6 @@ def _send_course_email(email_id, to_list, global_email_context, subtask_progress
course_email_template = CourseEmailTemplate.get_template()
num_sent = 0
num_error = 0
try:
connection = get_connection()
connection.open()
......@@ -404,45 +430,47 @@ def _send_course_email(email_id, to_list, global_email_context, subtask_progress
raise exc
else:
# This will fall through and not retry the message, since it will be popped
log.warning('Email with id %s not delivered to %s due to error %s', email_id, email, exc.smtp_error)
log.warning('Task %s: email with id %s not delivered to %s due to error %s', task_id, email_id, email, exc.smtp_error)
dog_stats_api.increment('course_email.error', tags=[_statsd_tag(course_title)])
num_error += 1
to_list.pop()
except (SMTPDataError, SMTPConnectError, SMTPServerDisconnected) as exc:
# Error caught here cause the email to be retried. The entire task is actually retried without popping the list
# Reasoning is that all of these errors may be temporary condition.
# TODO: figure out what this means. Presumably we have popped the list with those that have succeeded
# and failed, rather than those needing a later retry.
log.warning('Email with id %d not delivered due to temporary error %s, retrying send to %d recipients',
email_id, exc, len(to_list))
# Errors caught here cause the email to be retried. The entire task is actually retried
# without popping the current recipient off of the existing list.
# Errors caught are those that indicate a temporary condition that might succeed on retry.
connection.close()
log.warning('Task %s: email with id %d not delivered due to temporary error %s, retrying send to %d recipients',
task_id, email_id, exc, len(to_list))
raise send_course_email.retry(
arg=[
email_id,
to_list,
global_email_context,
_course_email_result(subtask_progress, num_sent, num_error, num_optout),
update_subtask_result(subtask_progress, num_sent, num_error, num_optout),
],
exc=exc,
countdown=(2 ** retry_index) * 15
)
except:
log.exception('Email with id %d caused send_course_email task to fail with uncaught exception. To list: %s',
email_id,
[i['email'] for i in to_list])
# Close the connection before we exit
except Exception as exc:
# If we have a general exception for this request, we need to figure out what to do with it.
# If we're going to just mark it as failed
# And the log message below should indicate which task_id is failing, so we have a chance to
# reconstruct the problems.
connection.close()
raise
log.exception('Task %s: email with id %d caused send_course_email task to fail with uncaught exception. To list: %s',
task_id, email_id, [i['email'] for i in to_list])
num_error += len(to_list)
return update_subtask_result(subtask_progress, num_sent, num_error, num_optout), exc
else:
connection.close()
# Add current progress to any progress stemming from previous retries:
return _course_email_result(subtask_progress, num_sent, num_error, num_optout)
connection.close()
return update_subtask_result(subtask_progress, num_sent, num_error, num_optout), None
def _course_email_result(previous_result, new_num_sent, new_num_error, new_num_optout):
def update_subtask_result(previous_result, new_num_sent, new_num_error, new_num_optout):
"""Return the result of course_email sending as a dict (not a string)."""
attempted = new_num_sent + new_num_error
current_result = {'attempted': attempted, 'succeeded': new_num_sent, 'skipped': new_num_optout, 'failed': new_num_error}
......
lms/djangoapps/bulk_email/tests/test_email.py
......@@ -2,6 +2,8 @@
"""
Unit tests for sending course email
"""
from mock import patch
from django.conf import settings
from django.core import mail
from django.core.urlresolvers import reverse
......@@ -12,13 +14,7 @@ from courseware.tests.tests import TEST_DATA_MONGO_MODULESTORE
from student.tests.factories import UserFactory, GroupFactory, CourseEnrollmentFactory
from xmodule.modulestore.tests.django_utils import ModuleStoreTestCase
from xmodule.modulestore.tests.factories import CourseFactory
from instructor_task.models import InstructorTask
from instructor_task.tests.factories import InstructorTaskFactory
from bulk_email.tasks import send_course_email
from bulk_email.models import CourseEmail, Optout
from mock import patch
from bulk_email.models import Optout
STAFF_COUNT = 3
STUDENT_COUNT = 10
......@@ -32,13 +28,13 @@ class MockCourseEmailResult(object):
"""
emails_sent = 0
def get_mock_course_email_result(self):
def get_mock_update_subtask_result(self):
"""Wrapper for mock email function."""
def mock_course_email_result(prev_results, sent, failed, output, **kwargs): # pylint: disable=W0613
def mock_update_subtask_result(prev_results, sent, failed, output, **kwargs): # pylint: disable=W0613
"""Increments count of number of emails sent."""
self.emails_sent += sent
return True
return mock_course_email_result
return mock_update_subtask_result
@override_settings(MODULESTORE=TEST_DATA_MONGO_MODULESTORE)
......@@ -247,13 +243,13 @@ class TestEmailSendFromDashboard(ModuleStoreTestCase):
)
@override_settings(EMAILS_PER_TASK=3, EMAILS_PER_QUERY=7)
@patch('bulk_email.tasks._course_email_result')
@patch('bulk_email.tasks.update_subtask_result')
def test_chunked_queries_send_numerous_emails(self, email_mock):
"""
Test sending a large number of emails, to test the chunked querying
"""
mock_factory = MockCourseEmailResult()
email_mock.side_effect = mock_factory.get_mock_course_email_result()
email_mock.side_effect = mock_factory.get_mock_update_subtask_result()
added_users = []
for _ in xrange(LARGE_NUM_EMAILS):
user = UserFactory()
......@@ -283,24 +279,3 @@ class TestEmailSendFromDashboard(ModuleStoreTestCase):
[s.email for s in self.students] +
[s.email for s in added_users if s not in optouts])
self.assertItemsEqual(outbox_contents, should_send_contents)
@override_settings(MODULESTORE=TEST_DATA_MONGO_MODULESTORE)
class TestEmailSendExceptions(ModuleStoreTestCase):
"""
Test that exceptions are handled correctly.
"""
def test_no_instructor_task(self):
with self.assertRaises(InstructorTask.DoesNotExist):
send_course_email(100, 101, [], {}, False)
def test_no_course_title(self):
entry = InstructorTaskFactory.create(task_key='', task_id='dummy')
with self.assertRaises(KeyError):
send_course_email(entry.id, 101, [], {}, False)
def test_no_course_email_obj(self):
# Make sure send_course_email handles CourseEmail.DoesNotExist exception.
entry = InstructorTaskFactory.create(task_key='', task_id='dummy')
with self.assertRaises(CourseEmail.DoesNotExist):
send_course_email(entry.id, 101, [], {'course_title': 'Test'}, False)
lms/djangoapps/bulk_email/tests/test_err_handling.py
......@@ -2,11 +2,16 @@
Unit tests for handling email sending errors
"""
from itertools import cycle
from mock import patch, Mock
from smtplib import SMTPDataError, SMTPServerDisconnected, SMTPConnectError
from unittest import skip
from django.test.utils import override_settings
from django.conf import settings
from django.core.management import call_command
from django.core.urlresolvers import reverse
from courseware.tests.tests import TEST_DATA_MONGO_MODULESTORE
from xmodule.modulestore.tests.django_utils import ModuleStoreTestCase
from xmodule.modulestore.tests.factories import CourseFactory
......@@ -16,9 +21,6 @@ from bulk_email.models import CourseEmail
from bulk_email.tasks import perform_delegate_email_batches
from instructor_task.models import InstructorTask
from mock import patch, Mock
from smtplib import SMTPDataError, SMTPServerDisconnected, SMTPConnectError
class EmailTestException(Exception):
"""Mock exception for email testing."""
......@@ -65,14 +67,15 @@ class TestEmailErrors(ModuleStoreTestCase):
self.assertTrue(type(exc) == SMTPDataError)
@patch('bulk_email.tasks.get_connection', autospec=True)
@patch('bulk_email.tasks.course_email_result')
@patch('bulk_email.tasks.update_subtask_result')
@patch('bulk_email.tasks.send_course_email.retry')
def test_data_err_fail(self, retry, result, get_conn):
"""
Test that celery handles permanent SMTPDataErrors by failing and not retrying.
"""
# have every fourth email fail due to blacklisting:
get_conn.return_value.send_messages.side_effect = cycle([SMTPDataError(554, "Email address is blacklisted"),
None])
None, None, None])
students = [UserFactory() for _ in xrange(settings.EMAILS_PER_TASK)]
for student in students:
CourseEnrollmentFactory.create(user=student, course_id=self.course.id)
......@@ -88,10 +91,10 @@ class TestEmailErrors(ModuleStoreTestCase):
# We shouldn't retry when hitting a 5xx error
self.assertFalse(retry.called)
# Test that after the rejected email, the rest still successfully send
((sent, fail, optouts), _) = result.call_args
((_, sent, fail, optouts), _) = result.call_args
self.assertEquals(optouts, 0)
self.assertEquals(fail, settings.EMAILS_PER_TASK / 2)
self.assertEquals(sent, settings.EMAILS_PER_TASK / 2)
self.assertEquals(fail, settings.EMAILS_PER_TASK / 4)
self.assertEquals(sent, 3 * settings.EMAILS_PER_TASK / 4)
@patch('bulk_email.tasks.get_connection', autospec=True)
@patch('bulk_email.tasks.send_course_email.retry')
......@@ -134,10 +137,11 @@ class TestEmailErrors(ModuleStoreTestCase):
exc = kwargs['exc']
self.assertTrue(type(exc) == SMTPConnectError)
@patch('bulk_email.tasks.course_email_result')
@patch('bulk_email.tasks.update_subtask_result')
@patch('bulk_email.tasks.send_course_email.retry')
@patch('bulk_email.tasks.log')
@patch('bulk_email.tasks.get_connection', Mock(return_value=EmailTestException))
@skip
def test_general_exception(self, mock_log, retry, result):
"""
Tests the if the error is not SMTP-related, we log and reraise
......@@ -148,19 +152,29 @@ class TestEmailErrors(ModuleStoreTestCase):
'subject': 'test subject for myself',
'message': 'test message for myself'
}
# TODO: This whole test is flawed. Figure out how to make it work correctly,
# possibly moving it elsewhere. It's hitting the wrong exception.
# For some reason (probably the weirdness of testing with celery tasks) assertRaises doesn't work here
# so we assert on the arguments of log.exception
# TODO: This is way too fragile, because if any additional log statement is added anywhere in the flow,
# this test will break.
self.client.post(self.url, test_email)
((log_str, email_id, to_list), _) = mock_log.exception.call_args
# ((log_str, email_id, to_list), _) = mock_log.exception.call_args
# instead, use call_args_list[-1] to get the last call?
self.assertTrue(mock_log.exception.called)
self.assertIn('caused send_course_email task to fail with uncaught exception.', log_str)
self.assertEqual(email_id, 1)
self.assertEqual(to_list, [self.instructor.email])
# self.assertIn('caused send_course_email task to fail with uncaught exception.', log_str)
# self.assertEqual(email_id, 1)
# self.assertEqual(to_list, [self.instructor.email])
self.assertFalse(retry.called)
self.assertFalse(result.called)
@patch('bulk_email.tasks.course_email_result')
# @patch('bulk_email.tasks.delegate_email_batches.retry')
# TODO: cannot use the result method to determine if a result was generated,
# because we now call the particular method as part of all subtask calls.
# So use result.called_count to track this...
# self.assertFalse(result.called)
# call_args_list = result.call_args_list
num_calls = result.called_count
self.assertTrue(num_calls == 2)
@patch('bulk_email.tasks.update_subtask_result')
@patch('bulk_email.tasks.log')
def test_nonexist_email(self, mock_log, result):
"""
......
lms/djangoapps/instructor_task/api.py
......@@ -190,7 +190,6 @@ def submit_bulk_course_email(request, course_id, email_id):
"""
# check arguments: make sure that the course is defined?
# TODO: what is the right test here?
# modulestore().get_instance(course_id, problem_url)
# This should also make sure that the email exists.
# We can also pull out the To argument here, so that is displayed in
......@@ -200,10 +199,10 @@ def submit_bulk_course_email(request, course_id, email_id):
task_type = 'bulk_course_email'
task_class = send_bulk_course_email
# TODO: figure out if we need to encode in a standard way, or if we can get away
# with doing this manually. Shouldn't be hard to make the encode call explicitly,
# and allow no problem_url or student to be defined. Like this:
# task_input, task_key = encode_problem_and_student_input()
# Pass in the to_option as a separate argument, even though it's (currently)
# in the CourseEmail. That way it's visible in the progress status.
# (At some point in the future, we might take the recipient out of the CourseEmail,
# so that the same saved email can be sent to different recipients, as it is tested.)
task_input = {'email_id': email_id, 'to_option': to_option}
task_key_stub = "{email_id}_{to_option}".format(email_id=email_id, to_option=to_option)
# create the key value by using MD5 hash:
......
lms/djangoapps/instructor_task/tests/test_api.py
......@@ -6,16 +6,21 @@ from xmodule.modulestore.exceptions import ItemNotFoundError
from courseware.tests.factories import UserFactory
from instructor_task.api import (get_running_instructor_tasks,
get_instructor_task_history,
submit_rescore_problem_for_all_students,
submit_rescore_problem_for_student,
submit_reset_problem_attempts_for_all_students,
submit_delete_problem_state_for_all_students)
from bulk_email.models import CourseEmail, SEND_TO_ALL
from instructor_task.api import (
get_running_instructor_tasks,
get_instructor_task_history,
submit_rescore_problem_for_all_students,
submit_rescore_problem_for_student,
submit_reset_problem_attempts_for_all_students,
submit_delete_problem_state_for_all_students,
submit_bulk_course_email,
)
from instructor_task.api_helper import AlreadyRunningError
from instructor_task.models import InstructorTask, PROGRESS
from instructor_task.tests.test_base import (InstructorTaskTestCase,
InstructorTaskCourseTestCase,
InstructorTaskModuleTestCase,
TEST_COURSE_ID)
......@@ -46,8 +51,8 @@ class InstructorTaskReportTest(InstructorTaskTestCase):
self.assertEquals(set(task_ids), set(expected_ids))
class InstructorTaskSubmitTest(InstructorTaskModuleTestCase):
"""Tests API methods that involve the submission of background tasks."""
class InstructorTaskModuleSubmitTest(InstructorTaskModuleTestCase):
"""Tests API methods that involve the submission of module-based background tasks."""
def setUp(self):
self.initialize_course()
......@@ -136,3 +141,28 @@ class InstructorTaskSubmitTest(InstructorTaskModuleTestCase):
def test_submit_delete_all(self):
self._test_submit_task(submit_delete_problem_state_for_all_students)
class InstructorTaskCourseSubmitTest(InstructorTaskCourseTestCase):
"""Tests API methods that involve the submission of course-based background tasks."""
def setUp(self):
self.initialize_course()
self.student = UserFactory.create(username="student", email="student@edx.org")
self.instructor = UserFactory.create(username="instructor", email="instructor@edx.org")
def _define_course_email(self):
course_email = CourseEmail.create(self.course.id, self.instructor, SEND_TO_ALL, "Test Subject", "<p>This is a test message</p>")
return course_email.id
def test_submit_bulk_email_all(self):
email_id = self._define_course_email()
instructor_task = submit_bulk_course_email(self.create_task_request(self.instructor), self.course.id, email_id)
# test resubmitting, by updating the existing record:
instructor_task = InstructorTask.objects.get(id=instructor_task.id)
instructor_task.task_state = PROGRESS
instructor_task.save()
with self.assertRaises(AlreadyRunningError):
instructor_task = submit_bulk_course_email(self.create_task_request(self.instructor), self.course.id, email_id)
lms/djangoapps/instructor_task/tests/test_base.py
......@@ -96,10 +96,10 @@ class InstructorTaskTestCase(TestCase):
@override_settings(MODULESTORE=TEST_DATA_MIXED_MODULESTORE)
class InstructorTaskModuleTestCase(LoginEnrollmentTestCase, ModuleStoreTestCase):
class InstructorTaskCourseTestCase(LoginEnrollmentTestCase, ModuleStoreTestCase):
"""
Base test class for InstructorTask-related tests that require
the setup of a course and problem in order to access StudentModule state.
the setup of a course.
"""
course = None
current_user = None
......@@ -150,6 +150,31 @@ class InstructorTaskModuleTestCase(LoginEnrollmentTestCase, ModuleStoreTestCase)
return self._create_user(username, is_staff=False)
@staticmethod
def get_task_status(task_id):
"""Use api method to fetch task status, using mock request."""
mock_request = Mock()
mock_request.REQUEST = {'task_id': task_id}
response = instructor_task_status(mock_request)
status = json.loads(response.content)
return status
def create_task_request(self, requester_username):
"""Generate request that can be used for submitting tasks"""
request = Mock()
request.user = User.objects.get(username=requester_username)
request.get_host = Mock(return_value="testhost")
request.META = {'REMOTE_ADDR': '0:0:0:0', 'SERVER_NAME': 'testhost'}
request.is_secure = Mock(return_value=False)
return request
@override_settings(MODULESTORE=TEST_DATA_MIXED_MODULESTORE)
class InstructorTaskModuleTestCase(InstructorTaskCourseTestCase):
"""
Base test class for InstructorTask-related tests that require
the setup of a course and problem in order to access StudentModule state.
"""
@staticmethod
def problem_location(problem_url_name):
"""
Create an internal location for a test problem.
......@@ -192,21 +217,3 @@ class InstructorTaskModuleTestCase(LoginEnrollmentTestCase, ModuleStoreTestCase)
module_type=descriptor.location.category,
module_state_key=descriptor.location.url(),
)
@staticmethod
def get_task_status(task_id):
"""Use api method to fetch task status, using mock request."""
mock_request = Mock()
mock_request.REQUEST = {'task_id': task_id}
response = instructor_task_status(mock_request)
status = json.loads(response.content)
return status
def create_task_request(self, requester_username):
"""Generate request that can be used for submitting tasks"""
request = Mock()
request.user = User.objects.get(username=requester_username)
request.get_host = Mock(return_value="testhost")
request.META = {'REMOTE_ADDR': '0:0:0:0', 'SERVER_NAME': 'testhost'}
request.is_secure = Mock(return_value=False)
return request
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