Profiling. Also, preliminary dummy code for tracking in capa_problem

courseware/capa_module.py

@@ -306,4 +306,9 @@ class LoncapaModule(XModule):
 
         filename=settings.DATA_DIR+"problems/"+self.filename+".xml"
         self.lcp=LoncapaProblem(filename, self.item_id, self.lcp.get_state())
+
+        event_info = self.lcp.get_state()
+        event_info.update({'filename':filename})
+        #server_track(request, 'reset_problem', event_info)
+
         return json.dumps(self.get_problem_html(encapsulate=False))

perfstats/middleware.py

+import views, json, tempfile
+import hotshot
+import hotshot.stats
+from django.conf import settings
+
+tmpfile = None
+prof = None
+
+def restart_profile():
+    global prof, tmpfile
+    try: 
+        oldname = tmpfile.name
+    except: 
+        oldname = ""
+    if prof != None:
+        prof.close()
+    tmpfile = tempfile.NamedTemporaryFile(prefix='prof',delete=False)
+    prof = hotshot.Profile(tmpfile.name)
+    print "Filename", tmpfile.name
+    return (tmpfile.name, oldname)
+
+restart_profile()
+
+class ProfileMiddleware:
+    def process_request (self, request):
+        prof.start()
+        print "Process request"
+
+    def process_response (self, request, response):
+        try: 
+            prof.stop()
+        except:
+            print "Profiler not active. If you didn't just restart, this is an error"
+        print "Process response"
+        return response

perfstats/models.py

+from django.db import models
+
+# Create your models here.

perfstats/tests.py

+"""
+This file demonstrates writing tests using the unittest module. These will pass
+when you run "manage.py test".
+
+Replace this with more appropriate tests for your application.
+"""
+
+from django.test import TestCase
+
+
+class SimpleTest(TestCase):
+    def test_basic_addition(self):
+        """
+        Tests that 1 + 1 always equals 2.
+        """
+        self.assertEqual(1 + 1, 2)

perfstats/views.py

+# Create your views here.
+import middleware
+from django.http import HttpResponse
+
+def end_profile(request):
+    names = middleware.restart_profile()
+    return HttpResponse(str(names))

settings.py

@@ -13,6 +13,8 @@ DEFAULT_FEEDBACK_EMAIL = 'feedback@mitx.mit.edu'
 WIKI_REQUIRE_LOGIN_EDIT = True
 WIKI_REQUIRE_LOGIN_VIEW = True
 
+PROFILE = False
+
 HTTPS = 'on'
 
 DEBUG = True
@@ -68,14 +70,14 @@ TEMPLATE_LOADERS = (
 )
 
 MIDDLEWARE_CLASSES = (
-    'django.middleware.common.CommonMiddleware',
-    'django.contrib.sessions.middleware.SessionMiddleware',
-    'django.middleware.csrf.CsrfViewMiddleware',
-    'django.contrib.auth.middleware.AuthenticationMiddleware',
-    'django.contrib.messages.middleware.MessageMiddleware',
-    'track.middleware.TrackMiddleware',
-    'djangomako.middleware.MakoMiddleware',
-    #'debug_toolbar.middleware.DebugToolbarMiddleware',
+   'django.middleware.common.CommonMiddleware',
+   'django.contrib.sessions.middleware.SessionMiddleware',
+   'django.middleware.csrf.CsrfViewMiddleware',
+   'django.contrib.auth.middleware.AuthenticationMiddleware',
+   'django.contrib.messages.middleware.MessageMiddleware',
+   'track.middleware.TrackMiddleware',
+   'djangomako.middleware.MakoMiddleware',
+   #'debug_toolbar.middleware.DebugToolbarMiddleware',
 )
 
 ROOT_URLCONF = 'mitx.urls'
@@ -96,6 +98,7 @@ INSTALLED_APPS = (
     'simplewiki',
     'track',
     'circuit',
+    'perfstats',
     # Uncomment the next line to enable the admin:
     # 'django.contrib.admin',
     # Uncomment the next line to enable admin documentation:
@@ -134,6 +137,9 @@ MAXLOG = 500
 
 execfile("../settings.py")
 
+if PROFILE :
+   MIDDLEWARE_CLASSES = ( 'perfstats.middleware.ProfileMiddleware',) + MIDDLEWARE_CLASSES
+
 if 'TRACK_DIR' not in locals():
    TRACK_DIR = BASE_DIR+'/track_dir/'
 if 'ASKBOT_EXTRA_SKINS_DIR' not in locals():

urls.py

@@ -2,6 +2,7 @@ from django.conf.urls.defaults import patterns, include, url
 import django.contrib.auth.views
 from django.conf import settings
 from django.contrib import admin
+import perfstats
 
 # Uncomment the next two lines to enable the admin:
 # from django.contrib import admin
@@ -30,6 +31,9 @@ urlpatterns = ('',
     url(r'^courseware/$', 'courseware.views.index'),
 )
 
+if settings.PROFILE:
+   urlpatterns=urlpatterns + (url(r'^reprofile$','perfstats.views.end_profile'),)
+
 if settings.COURSEWARE_ENABLED:
    urlpatterns=urlpatterns + (url(r'^wiki/', include('simplewiki.urls')),
    url(r'^courseware/(?P<course>[^/]*)/(?P<chapter>[^/]*)/(?P<section>[^/]*)/$', 'courseware.views.index'),