async def test_request_lifecycle_signals_dispatched_with_thread_sensitive(self):
class SignalHandler:
"""Track threads handler is dispatched on."""
threads = []
def __call__(self, **kwargs):
self.threads.append(threading.current_thread())
signal_handler = SignalHandler()
request_started.connect(signal_handler)
request_finished.connect(signal_handler)
# Perform a basic request.
application = get_asgi_application()
scope = self.async_request_factory._base_scope(path="/")
communicator = ApplicationCommunicator(application, scope)
await communicator.send_input({"type": "http.request"})
response_start = await communicator.receive_output()
self.assertEqual(response_start["type"], "http.response.start")
self.assertEqual(response_start["status"], 200)
response_body = await communicator.receive_output()
self.assertEqual(response_body["type"], "http.response.body")
self.assertEqual(response_body["body"], b"Hello World!")
# Give response.close() time to finish.
await communicator.wait()
# AsyncToSync should have executed the signals in the same thread.
request_started_thread, request_finished_thread = signal_handler.threads
self.assertEqual(request_started_thread, request_finished_thread)
request_started.disconnect(signal_handler)
request_finished.disconnect(signal_handler)
async def test_request_lifecycle_signals_dispatched_with_thread_sensitive(
self):
class SignalHandler:
"""Track threads handler is dispatched on."""
threads = []
def __call__(self, **kwargs):
self.threads.append(threading.current_thread())
signal_handler = SignalHandler()
request_started.connect(signal_handler)
request_finished.connect(signal_handler)
# Perform a basic request.
application = get_asgi_application()
scope = self.async_request_factory._base_scope(path='/')
communicator = ApplicationCommunicator(application, scope)
await communicator.send_input({'type': 'http.request'})
response_start = await communicator.receive_output()
self.assertEqual(response_start['type'], 'http.response.start')
self.assertEqual(response_start['status'], 200)
response_body = await communicator.receive_output()
self.assertEqual(response_body['type'], 'http.response.body')
self.assertEqual(response_body['body'], b'Hello World!')
# Give response.close() time to finish.
await communicator.wait()
# At this point, AsyncToSync does not have a current executor. Thus
# SyncToAsync falls-back to .single_thread_executor.
target_thread = next(iter(SyncToAsync.single_thread_executor._threads))
request_started_thread, request_finished_thread = signal_handler.threads
self.assertEqual(request_started_thread, target_thread)
self.assertEqual(request_finished_thread, target_thread)
request_started.disconnect(signal_handler)
request_finished.disconnect(signal_handler)
def __call__(self, environ):
from django.conf import settings
# Set up middleware if needed. We couldn't do this earlier, because
# settings weren't available.
if self._request_middleware is None:
self.load_middleware()
request_started.disconnect(close_old_connections)
request_started.send(sender=self.__class__)
request_started.connect(close_old_connections)
request = WSGIRequest(environ)
# sneaky little hack so that we can easily get round
# CsrfViewMiddleware. This makes life easier, and is probably
# required for backwards compatibility with external tests against
# admin views.
request._dont_enforce_csrf_checks = not self.enforce_csrf_checks
response = self.get_response(request)
# We're emulating a WSGI server; we must call the close method
# on completion.
if response.streaming:
response.streaming_content = closing_iterator_wrapper(
response.streaming_content, response.close)
else:
request_finished.disconnect(close_old_connections)
response.close() # will fire request_finished
request_finished.connect(close_old_connections)
return response
def __call__(self, environ):
from django.conf import settings
# Set up middleware if needed. We couldn't do this earlier, because
# settings weren't available.
if self._request_middleware is None:
self.load_middleware()
request_started.disconnect(close_old_connections)
request_started.send(sender=self.__class__)
request_started.connect(close_old_connections)
request = WSGIRequest(environ)
# sneaky little hack so that we can easily get round
# CsrfViewMiddleware. This makes life easier, and is probably
# required for backwards compatibility with external tests against
# admin views.
request._dont_enforce_csrf_checks = not self.enforce_csrf_checks
response = self.get_response(request)
# We're emulating a WSGI server; we must call the close method
# on completion.
if response.streaming:
response.streaming_content = closing_iterator_wrapper(response.streaming_content, response.close)
else:
request_finished.disconnect(close_old_connections)
response.close() # will fire request_finished
request_finished.connect(close_old_connections)
return response
def register_handlers(client):
from django.core.signals import got_request_exception, request_started, request_finished
from elasticapm.contrib.django.handlers import exception_handler
# Connect to Django's internal signal handlers
got_request_exception.disconnect(dispatch_uid=ERROR_DISPATCH_UID)
got_request_exception.connect(partial(exception_handler, client),
dispatch_uid=ERROR_DISPATCH_UID,
weak=False)
request_started.disconnect(dispatch_uid=REQUEST_START_DISPATCH_UID)
request_started.connect(
lambda sender, *args, **kwargs: client.begin_transaction('request')
if _should_start_transaction(client) else None,
dispatch_uid=REQUEST_START_DISPATCH_UID,
weak=False)
request_finished.disconnect(dispatch_uid=REQUEST_FINISH_DISPATCH_UID)
request_finished.connect(lambda sender, **kwargs: client.end_transaction()
if _should_start_transaction(client) else None,
dispatch_uid=REQUEST_FINISH_DISPATCH_UID,
weak=False)
# If we can import celery, register ourselves as exception handler
try:
import celery # noqa F401
from elasticapm.contrib.celery import register_exception_tracking
try:
register_exception_tracking(client)
except Exception as e:
client.logger.exception(
'Failed installing django-celery hook: %s' % e)
except ImportError:
client.logger.debug("Not instrumenting Celery, couldn't import")
def __enter__(self):
self.force_debug_cursor = self.connection.force_debug_cursor
self.connection.force_debug_cursor = True
self.initial_queries = len(self.connection.queries_log)
self.final_queries = None
request_started.disconnect(reset_queries)
return self
def __enter__(self):
self.force_debug_cursor = self.connection.force_debug_cursor
self.connection.force_debug_cursor = True
self.initial_queries = len(self.connection.queries_log)
self.final_queries = None
request_started.disconnect(reset_queries)
return self
def verbose_cursor():
old_method = BaseDatabaseWrapper.cursor
l, _, new_method = make_verbose_cursor()
request_started.disconnect(reset_queries)
BaseDatabaseWrapper.cursor = new_method
yield l
BaseDatabaseWrapper.cursor = old_method
request_started.connect(reset_queries)
def verbose_cursor():
old_method = BaseDatabaseWrapper.cursor
l, _, new_method = make_verbose_cursor()
request_started.disconnect(reset_queries)
BaseDatabaseWrapper.cursor = new_method
yield l
BaseDatabaseWrapper.cursor = old_method
request_started.connect(reset_queries)
def process_request(self, _):
if RequestQueryCountManager.get_testcase_container():
# Took from django.test.utils.CaptureQueriesContext
self.force_debug_cursor = self.connection.force_debug_cursor
self.connection.force_debug_cursor = True
self.initial_queries = len(self.connection.queries_log)
self.final_queries = None
request_started.disconnect(reset_queries)
def __enter__(self):
self.force_debug_cursor = self.connection.force_debug_cursor
self.connection.force_debug_cursor = True
# Run any initialization queries if needed so that they won't be
# included as part of the count.
self.connection.ensure_connection()
self.initial_queries = len(self.connection.queries_log)
self.final_queries = None
request_started.disconnect(reset_queries)
return self
def __enter__(self):
# entering the 'with' block
self.force_debug_cursor = self.connection.force_debug_cursor
self.connection.force_debug_cursor = True
self.connection.ensure_connection()
self.initial_queries = len(self.connection.queries_log)
request_started.disconnect(
reset_queries
) # apparently prevents queries_log from being emptied
return self
def __enter__(self):
self.force_debug_cursor = self.connection.force_debug_cursor
self.connection.force_debug_cursor = True
# Run any initialization queries if needed so that they won't be
# included as part of the count.
self.connection.ensure_connection()
self.initial_queries = len(self.connection.queries_log)
self.final_queries = None
request_started.disconnect(reset_queries)
return self
def _model_checks(app_configs, **kwargs):
from django.apps import apps
from django.core.signals import request_started
request_started.disconnect(dispatch_uid=_REQUEST_STARTED_UID)
if app_configs is None:
app_configs = apps.get_app_configs()
messages = []
_initialize(app_configs, messages)
return messages
def queries(count=None, using=None):
"""
A context manager that captures the queries that were made.
:param count: assert this number of queries were made
:param using: alias of the database to monitor
.. note:: The `list` of queries is not populated until after the context
manager exits.
Usage::
with queries() as qs:
User.objects.count()
assert len(qs) == 5
# The same could be rewritten as
with queries(count=5):
User.objects.count()
"""
if using is None:
using = DEFAULT_DB_ALIAS
conn = connections[using]
# For compatbility with Django 1.2, apply necessary patching.
patches = []
if not hasattr(conn, "use_debug_cursor"):
patches.append(hacks.django12_debug_cursor(conn))
with utils.nested(*patches):
# A debug cursor saves all the queries to conn.queries, in case one isn't
# already being used, restore the current state after the test.
was_debug_cursor = conn.use_debug_cursor
conn.use_debug_cursor = True
prior = len(conn.queries)
executed = []
request_started.disconnect(reset_queries)
try:
yield executed
finally:
request_started.connect(reset_queries)
conn.use_debug_cursor = was_debug_cursor
executed[:] = conn.queries[prior:]
if count is not None:
assert len(executed) == count
def do_benchmark():
start_times = []
times = []
def handle_started(*args, **kwargs):
start_times.append(time())
def handle_finished(*args, **kwargs):
times.append(time() - start_times[-1])
request_started.connect(handle_started)
request_finished.connect(handle_finished)
try:
yield times
finally:
request_started.disconnect(handle_started)
request_finished.disconnect(handle_finished)
def _request_started(sender, **kwargs):
from django.apps import apps
from django.core.signals import request_started
from logging import getLogger
request_started.disconnect(dispatch_uid=_REQUEST_STARTED_UID)
app_configs = apps.get_app_configs()
messages = []
_initialize(app_configs, messages)
if messages:
logger = getLogger(__name__)
for message in messages:
logger.critical(message)
async def __call__(self, scope):
# Set up middleware if needed. We couldn't do this earlier, because
# settings weren't available.
if self._middleware_chain is None:
self.load_middleware(is_async=True)
# Extract body file from the scope, if provided.
if "_body_file" in scope:
body_file = scope.pop("_body_file")
else:
body_file = FakePayload("")
request_started.disconnect(close_old_connections)
await sync_to_async(request_started.send,
thread_sensitive=False)(sender=self.__class__,
scope=scope)
request_started.connect(close_old_connections)
request = ASGIRequest(scope, body_file)
# Sneaky little hack so that we can easily get round
# CsrfViewMiddleware. This makes life easier, and is probably required
# for backwards compatibility with external tests against admin views.
request._dont_enforce_csrf_checks = not self.enforce_csrf_checks
# Request goes through middleware.
response = await self.get_response_async(request)
# Simulate behaviors of most Web servers.
conditional_content_removal(request, response)
# Attach the originating ASGI request to the response so that it could
# be later retrieved.
response.asgi_request = request
# Emulate a server by calling the close method on completion.
if response.streaming:
response.streaming_content = await sync_to_async(
closing_iterator_wrapper, thread_sensitive=False)(
response.streaming_content,
response.close,
)
else:
request_finished.disconnect(close_old_connections)
# Will fire request_finished.
await sync_to_async(response.close, thread_sensitive=False)()
request_finished.connect(close_old_connections)
return response
def __call__(self, environ):
# Set up middleware if needed. We couldn't do this earlier, because
# settings weren't available.
if self._middleware_chain is None:
self.load_middleware()
request_started.disconnect(close_old_connections)
request_started.send(sender=self.__class__, environ=environ)
request_started.connect(close_old_connections)
request = WSGIRequest(environ)
# sneaky little hack so that we can easily get round
# CsrfViewMiddleware. This makes life easier, and is probably
# required for backwards compatibility with external tests against
# admin views.
request._dont_enforce_csrf_checks = not self.enforce_csrf_checks
# Request goes through middleware.
response = self.get_response(request)
# Simulate behaviors of most Web servers.
conditional_content_removal(request, response)
# Attach the originating request to the response so that it could be
# later retrieved.
response.wsgi_request = request
# We're emulating a WSGI server; we must call the close method
# on completion.
if response.streaming:
response.streaming_content = closing_iterator_wrapper(
response.streaming_content, response.close)
else:
request_finished.disconnect(close_old_connections)
response.close() # will fire request_finished
request_finished.connect(close_old_connections)
return response
def __call__(self, environ):
# Set up middleware if needed. We couldn't do this earlier, because
# settings weren't available.
if self._middleware_chain is None:
self.load_middleware()
request_started.disconnect(close_old_connections)
request_started.send(sender=self.__class__, environ=environ)
request_started.connect(close_old_connections)
request = WSGIRequest(environ)
# sneaky little hack so that we can easily get round
# CsrfViewMiddleware. This makes life easier, and is probably
# required for backwards compatibility with external tests against
# admin views.
request._dont_enforce_csrf_checks = not self.enforce_csrf_checks
# Request goes through middleware.
response = self.get_response(request)
# Simulate behaviors of most Web servers.
conditional_content_removal(request, response)
# Attach the originating request to the response so that it could be
# later retrieved.
response.wsgi_request = request
# We're emulating a WSGI server; we must call the close method
# on completion.
if response.streaming:
response.streaming_content = closing_iterator_wrapper(
response.streaming_content, response.close)
else:
request_finished.disconnect(close_old_connections)
response.close() # will fire request_finished
request_finished.connect(close_old_connections)
return response
def templates_do_not_do_queries(app_configs, **kwargs):
# get only the processors that aren't defaults
processors = set(settings.TEMPLATE_CONTEXT_PROCESSORS)
base_processors = set(global_settings.TEMPLATE_CONTEXT_PROCESSORS)
only_these_processors = processors - base_processors
request = RequestFactory().get('/')
issues = []
# emulates .django.test.utils.CaptureQueriesContext.__enter__
connection.use_debug_cursor = True
request_started.disconnect(reset_queries)
raw_msg = 'executed {{ count }} quer{{ count|pluralize:"y,ies" }}'
msg_template = Template(raw_msg)
for processor in only_these_processors:
count_before = len(connection.queries)
# fetch and execute the context processor.
# emulates django.template.context.RequestContext.__init__
data = import_string(processor)(request)
# call any callables, and hope that __repr__ is defined and
# causes an evaluation.
for key, value in data.items():
if callable(value):
value = value()
repr(value)
count_after = len(connection.queries)
if count_after > count_before:
final_count = count_after - count_before
msg = msg_template.render(Context({'count': final_count}))
issues.append(
checks.Warning(msg, obj=processor, id="morechecks.W001"))
# emulates .django.test.utils.CaptureQueriesContext.__exit__
connection.use_debug_cursor = False
request_started.connect(reset_queries)
return issues
def setUp(self):
request_started.disconnect(close_old_connections)
def setUp(self):
request_started.disconnect(close_old_connections)
def tearDown(self):
request_started.disconnect(self.register_started)
request_finished.disconnect(self.register_finished)
def tearDown(self):
request_started.disconnect(self.register_started)
request_finished.disconnect(self.register_finished)
import logging
def create_badges(sender, **kwargs):
request_started.disconnect(create_badges, dispatch_uid=uid)
CountryBadge.create_all()
def __enter__(self):
self.old_debug_cursor = self.connection.use_debug_cursor
self.connection.use_debug_cursor = True
self.starting_queries = len(self.connection.queries)
request_started.disconnect(reset_queries)
return self
async def __call__(self, scope, receive, send):
request_started.disconnect(close_old_connections)
try:
await super().__call__(scope, receive, send)
finally:
request_started.connect(close_old_connections)
def uninstall(self):
request_started.disconnect(self.before_request)
got_request_exception.disconnect(self.exception_handler)
if self.celery_handler:
self.celery_handler.uninstall()
def __enter__(self):
self.old_debug_cursor = self.connection.use_debug_cursor
self.connection.use_debug_cursor = True
self.starting_queries = len(self.connection.queries)
request_started.disconnect(reset_queries)
return self
from __future__ import unicode_literals
def uninstall(self):
request_started.disconnect(self.before_request)
got_request_exception.disconnect(self.exception_handler)
if self.celery_handler:
self.celery_handler.uninstall()
def __enter__(self):
self.old_debug = settings.DEBUG
settings.DEBUG = True
self.starting_queries = len(self.connection.queries)
request_started.disconnect(reset_queries)
return self
def setUp(self):
request_started.disconnect(close_old_connections)
self.application = get_lgi_application()
def __enter__(self):
self.force_debug_cursor = self.connection.force_debug_cursor
self.connection.force_debug_cursor = True
self.starting_count = len(self.connection.queries)
request_started.disconnect(reset_queries)
def handler(**kwargs):
self.raise_deferred_exception()
request_started.disconnect(handler)
def __enter__(self):
self.old_debug = settings.DEBUG
settings.DEBUG = True
self.starting_queries = len(self.connection.queries)
request_started.disconnect(reset_queries)
return self
