Mercurial > kallithea
view pylons_app/lib/profiler.py @ 15:c8265b4f0c2a
added log4j to development,
author | Marcin Kuzminski |
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date | Sun, 21 Feb 2010 14:24:50 +0100 |
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from __future__ import with_statement 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('cumulative') # 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) output = StringIO() pprint.pprint(environ, output, depth=3) resp += cgi.escape(output.getvalue(), True) resp += '</pre>' return resp