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import os
import errno
import cProfile
import datetime
import random
log_dir = os.path.join(os.path.dirname(__file__), '..', 'profile_log')
try:
os.mkdir(log_dir)
except OSError as e:
if e.errno != errno.EEXIST:
raise
class Profile(object):
def __init__(self, name=None):
if name is None:
name = '{}{}'.format(
datetime.datetime.now().strftime('%Y-%m-%dT%H_%M_%S'),
random.randrange(1000000),
)
self._name = name
self._filename = os.path.join(log_dir, name)
self._profile = cProfile.Profile(self._filename)
def start(self):
self._profile.start()
def stop(self):
self._profile.stop()
self._profile.close()
def __enter__(self):
self.start()
def __exit__(self, exc_type, exc_val, exc_tb):
self.stop()
@property
def profile(self):
return self._profile
class ProfileMiddleware(object):
def process_request(self, request):
request._tux_profile = Profile()
request._tux_profile.start()
def process_response(self, request, response):
request._tux_profile.stop()