kallithea Files · rhodecode/lib/profiler.py

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Location: kallithea/rhodecode/lib/profiler.py

c734686b3cf2 1.6 KiB text/x-python Show Annotation Show as Raw Download as Raw

Marcin Kuzminski

moved permission management into separate entity.
- this solves issues when whole form submision could influence permission management
particular case is that when repo group permission is revoked and user is no longer able to update repository settings

from __future__ import with_statement

import gc
import objgraph
import cProfile
import pstats
import cgi
import pprint
import threading

from StringIO import StringIO


class ProfilingMiddleware(object):
    def __init__(self, app):
        self.lock = threading.Lock()
        self.app = app

    def __call__(self, environ, start_response):
        with self.lock:
            profiler = cProfile.Profile()

            def run_app(*a, **kw):
                self.response = self.app(environ, start_response)

            profiler.runcall(run_app, environ, start_response)

            profiler.snapshot_stats()

            stats = pstats.Stats(profiler)
            stats.sort_stats('calls') #cummulative

            # Redirect output
            out = StringIO()
            stats.stream = out

            stats.print_stats()

            resp = ''.join(self.response)

            # Lets at least only put this on html-like responses.
            if resp.strip().startswith('<'):
                ## The profiling info is just appended to the response.
                ##  Browsers don't mind this.
                resp += ('<pre style="text-align:left; '
                         'border-top: 4px dashed red; padding: 1em;">')
                resp += cgi.escape(out.getvalue(), True)

                ct = objgraph.show_most_common_types()
                print ct

                resp += ct if ct else '---'

                output = StringIO()
                pprint.pprint(environ, output, depth=3)

                resp += cgi.escape(output.getvalue(), True)
                resp += '</pre>'

            return resp