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|
"""
runprofileserver.py
Starts a lightweight Web server with profiling enabled.
Credits for kcachegrind support taken from lsprofcalltree.py go to:
David Allouche
Jp Calderone & Itamar Shtull-Trauring
Johan Dahlin
"""
from django.core.management.base import BaseCommand, CommandError
from optparse import make_option
from datetime import datetime
import os
import sys
def label(code):
if isinstance(code, str):
return ('~', 0, code) # built-in functions ('~' sorts at the end)
else:
return '%s %s:%d' % (code.co_name,
code.co_filename,
code.co_firstlineno)
class KCacheGrind(object):
def __init__(self, profiler):
self.data = profiler.getstats()
self.out_file = None
def output(self, out_file):
self.out_file = out_file
print >> out_file, 'events: Ticks'
self._print_summary()
for entry in self.data:
self._entry(entry)
def _print_summary(self):
max_cost = 0
for entry in self.data:
totaltime = int(entry.totaltime * 1000)
max_cost = max(max_cost, totaltime)
print >> self.out_file, 'summary: %d' % (max_cost,)
def _entry(self, entry):
out_file = self.out_file
code = entry.code
#print >> out_file, 'ob=%s' % (code.co_filename,)
if isinstance(code, str):
print >> out_file, 'fi=~'
else:
print >> out_file, 'fi=%s' % (code.co_filename,)
print >> out_file, 'fn=%s' % (label(code),)
inlinetime = int(entry.inlinetime * 1000)
if isinstance(code, str):
print >> out_file, '0 ', inlinetime
else:
print >> out_file, '%d %d' % (code.co_firstlineno, inlinetime)
# recursive calls are counted in entry.calls
if entry.calls:
calls = entry.calls
else:
calls = []
if isinstance(code, str):
lineno = 0
else:
lineno = code.co_firstlineno
for subentry in calls:
self._subentry(lineno, subentry)
print >> out_file
def _subentry(self, lineno, subentry):
out_file = self.out_file
code = subentry.code
#print >> out_file, 'cob=%s' % (code.co_filename,)
print >> out_file, 'cfn=%s' % (label(code),)
if isinstance(code, str):
print >> out_file, 'cfi=~'
print >> out_file, 'calls=%d 0' % (subentry.callcount,)
else:
print >> out_file, 'cfi=%s' % (code.co_filename,)
print >> out_file, 'calls=%d %d' % (
subentry.callcount, code.co_firstlineno)
totaltime = int(subentry.totaltime * 1000)
print >> out_file, '%d %d' % (lineno, totaltime)
class Command(BaseCommand):
option_list = BaseCommand.option_list + (
make_option('--noreload', action='store_false', dest='use_reloader', default=True,
help='Tells Django to NOT use the auto-reloader.'),
make_option('--adminmedia', dest='admin_media_path', default='',
help='Specifies the directory from which to serve admin media.'),
make_option('--prof-path', dest='prof_path', default='/tmp',
help='Specifies the directory which to save profile information in.'),
make_option('--nomedia', action='store_true', dest='no_media', default=False,
help='Do not profile MEDIA_URL and ADMIN_MEDIA_URL'),
make_option('--use-cprofile', action='store_true', dest='use_cprofile', default=False,
help='Use cProfile if available, this is disabled per default because of incompatibilities.'),
make_option('--kcachegrind', action='store_true', dest='use_lsprof', default=False,
help='Create kcachegrind compatible lsprof files, this requires and automatically enables cProfile.'),
)
help = "Starts a lightweight Web server with profiling enabled."
args = '[optional port number, or ipaddr:port]'
# Validation is called explicitly each time the server is reloaded.
requires_model_validation = False
def handle(self, addrport='', *args, **options):
import django
from django.core.servers.basehttp import run, AdminMediaHandler, WSGIServerException
from django.core.handlers.wsgi import WSGIHandler
if args:
raise CommandError('Usage is runserver %s' % self.args)
if not addrport:
addr = ''
port = '8000'
else:
try:
addr, port = addrport.split(':')
except ValueError:
addr, port = '', addrport
if not addr:
addr = '127.0.0.1'
if not port.isdigit():
raise CommandError("%r is not a valid port number." % port)
use_reloader = options.get('use_reloader', True)
admin_media_path = options.get('admin_media_path', '')
shutdown_message = options.get('shutdown_message', '')
no_media = options.get('no_media', False)
quit_command = (sys.platform == 'win32') and 'CTRL-BREAK' or 'CONTROL-C'
def inner_run():
from django.conf import settings
import hotshot, time, os
USE_CPROFILE = options.get('use_cprofile', False)
USE_LSPROF = options.get('use_lsprof', False)
if USE_LSPROF:
USE_CPROFILE = True
if USE_CPROFILE:
try:
import cProfile
USE_CPROFILE = True
except ImportError:
print "cProfile disabled, module cannot be imported!"
USE_CPROFILE = False
if USE_LSPROF and not USE_CPROFILE:
raise SystemExit("Kcachegrind compatible output format required cProfile from Python 2.5")
prof_path = options.get('prof_path', '/tmp')
def make_profiler_handler(inner_handler):
def handler(environ, start_response):
path_info = environ['PATH_INFO']
# normally /media/ is MEDIA_URL, but in case still check it in case it's differently
# should be hardly a penalty since it's an OR expression.
# TODO: fix this to check the configuration settings and not make assumpsions about where media are on the url
if no_media and (path_info.startswith('/media') or path_info.startswith(settings.MEDIA_URL)):
return inner_handler(environ, start_response)
path_name = path_info.strip("/").replace('/', '.') or "root"
profname = "%s.%s.prof" % (path_name, datetime.now().isoformat())
profname = os.path.join(prof_path, profname)
if USE_CPROFILE:
prof = cProfile.Profile()
else:
prof = hotshot.Profile(profname)
start = datetime.now()
try:
return prof.runcall(inner_handler, environ, start_response)
finally:
# seeing how long the request took is important!
elap = datetime.now() - start
elapms = elap.seconds * 1000.0 + elap.microseconds / 1000.0
if USE_LSPROF:
kg = KCacheGrind(prof)
kg.output(file(profname, 'w'))
elif USE_CPROFILE:
prof.dump_stats(profname)
profname2 = "%s.%06dms.%s.prof" % (path_name, elapms, datetime.now().isoformat())
profname2 = os.path.join(prof_path, profname2)
os.rename(profname, profname2)
return handler
print "Validating models..."
self.validate(display_num_errors=True)
print "\nDjango version %s, using settings %r" % (django.get_version(), settings.SETTINGS_MODULE)
print "Development server is running at http://%s:%s/" % (addr, port)
print "Quit the server with %s." % quit_command
try:
path = admin_media_path or django.__path__[0] + '/contrib/admin/media'
handler = make_profiler_handler(AdminMediaHandler(WSGIHandler(), path))
run(addr, int(port), handler)
except WSGIServerException, e:
# Use helpful error messages instead of ugly tracebacks.
ERRORS = {
13: "You don't have permission to access that port.",
98: "That port is already in use.",
99: "That IP address can't be assigned-to.",
}
try:
error_text = ERRORS[e.args[0].args[0]]
except (AttributeError, KeyError):
error_text = str(e)
sys.stderr.write(self.style.ERROR("Error: %s" % error_text) + '\n')
# Need to use an OS exit because sys.exit doesn't work in a thread
os._exit(1)
except KeyboardInterrupt:
if shutdown_message:
print shutdown_message
sys.exit(0)
if use_reloader:
from django.utils import autoreload
autoreload.main(inner_run)
else:
inner_run()
|
