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Set the profiler instance on the request, not the middleware #23

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Set the profiler instance on the request, not the middleware #23

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16 changes: 10 additions & 6 deletions django_cprofile_middleware/middleware.py
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Original file line number Diff line number Diff line change
Expand Up @@ -40,37 +40,41 @@ class ProfilerMiddleware(MiddlewareMixin):
This is adapted from an example found here:
http://www.slideshare.net/zeeg/django-con-high-performance-django-presentation.
"""
PROFILER_REQUEST_ATTR_NAME = '_django_cprofile_middleware_profiler'

def can(self, request):
return settings.DEBUG and 'prof' in request.GET and \
request.user is not None and request.user.is_staff

def process_view(self, request, callback, callback_args, callback_kwargs):
if self.can(request):
self.profiler = profile.Profile()
profiler = profile.Profile()
setattr(request, self.PROFILER_REQUEST_ATTR_NAME, profiler)
args = (request,) + callback_args
try:
return self.profiler.runcall(
return profiler.runcall(
callback, *args, **callback_kwargs)
except Exception:
# we want the process_exception middleware to fire
# https://code.djangoproject.com/ticket/12250
return

def process_response(self, request, response):
if self.can(request):
self.profiler.create_stats()
if hasattr(request, self.PROFILER_REQUEST_ATTR_NAME):
profiler = getattr(request, self.PROFILER_REQUEST_ATTR_NAME)
profiler.create_stats()
if 'download' in request.GET:
import marshal

output = marshal.dumps(self.profiler.stats)
output = marshal.dumps(profiler.stats)
response = HttpResponse(
output, content_type='application/octet-stream')
response['Content-Disposition'] = 'attachment;' \
' filename=view.prof'
response['Content-Length'] = len(output)
else:
io = StringIO()
stats = pstats.Stats(self.profiler, stream=io)
stats = pstats.Stats(profiler, stream=io)

stats.strip_dirs().sort_stats(request.GET.get('sort', 'time'))
stats.print_stats(int(request.GET.get('count', 100)))
Expand Down