Login

pycallgraph

Author:
roppert
Posted:
February 9, 2009
Language:
Python
Version:
1.0
Score:
2 (after 2 ratings)

Simple debug middleware that uses pycallgraph to get a visual representation of the call graph, including number of calls and execution times.

Usage:

  1. Replace myapp in the snippet with the name of your application and or adjust include and exclude according to your needs

  2. Add CallgraphMiddleware to your middlewares in settings.py

  3. Append ?prof to any URL in your application to trigger the callgraph creation

Each callgraph cerated will be named callgraph-timestamp.png. This is because multiple callgraphs will be created when a re-direction occurs for example.

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
import time
import pycallgraph
from django.conf import settings

class CallgraphMiddleware(object):
    def process_view(self, request, callback, callback_args, callback_kwargs):
        if settings.DEBUG and 'graph' in request.GET:
            filter_func = pycallgraph.GlobbingFilter(include=['myapp.*'],
                    exclude=['myapp.debug.*'])
            pycallgraph.start_trace(filter_func=filter_func)

    def process_response(self, request, response):
        if settings.DEBUG and 'graph' in request.GET:
            pycallgraph.make_dot_graph('callgraph-' + str(time.time()) + '.png')
        return response

More like this

  1. Stuff by NixonDash 1 month ago
  2. Add custom fields to the built-in Group model by jmoppel 3 months, 1 week ago
  3. Month / Year SelectDateWidget based on django SelectDateWidget by pierreben 6 months, 3 weeks ago
  4. Python Django CRUD Example Tutorial by tuts_station 7 months ago
  5. Browser-native date input field by kytta 8 months, 3 weeks ago

Comments

Please login first before commenting.