You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
69 lines
2.2 KiB
69 lines
2.2 KiB
# -*- coding: utf-8 -
|
|
#
|
|
# This file is part of gunicorn released under the MIT license.
|
|
# See the NOTICE for more information.
|
|
|
|
"""The debug module contains utilities and functions for better
|
|
debugging Gunicorn."""
|
|
|
|
import sys
|
|
import linecache
|
|
import re
|
|
import inspect
|
|
|
|
__all__ = ['spew', 'unspew']
|
|
|
|
_token_spliter = re.compile(r'\W+')
|
|
|
|
|
|
class Spew(object):
|
|
|
|
def __init__(self, trace_names=None, show_values=True):
|
|
self.trace_names = trace_names
|
|
self.show_values = show_values
|
|
|
|
def __call__(self, frame, event, arg):
|
|
if event == 'line':
|
|
lineno = frame.f_lineno
|
|
if '__file__' in frame.f_globals:
|
|
filename = frame.f_globals['__file__']
|
|
if (filename.endswith('.pyc') or
|
|
filename.endswith('.pyo')):
|
|
filename = filename[:-1]
|
|
name = frame.f_globals['__name__']
|
|
line = linecache.getline(filename, lineno)
|
|
else:
|
|
name = '[unknown]'
|
|
try:
|
|
src = inspect.getsourcelines(frame)
|
|
line = src[lineno]
|
|
except IOError:
|
|
line = 'Unknown code named [%s]. VM instruction #%d' % (
|
|
frame.f_code.co_name, frame.f_lasti)
|
|
if self.trace_names is None or name in self.trace_names:
|
|
print('%s:%s: %s' % (name, lineno, line.rstrip()))
|
|
if not self.show_values:
|
|
return self
|
|
details = []
|
|
tokens = _token_spliter.split(line)
|
|
for tok in tokens:
|
|
if tok in frame.f_globals:
|
|
details.append('%s=%r' % (tok, frame.f_globals[tok]))
|
|
if tok in frame.f_locals:
|
|
details.append('%s=%r' % (tok, frame.f_locals[tok]))
|
|
if details:
|
|
print("\t%s" % ' '.join(details))
|
|
return self
|
|
|
|
|
|
def spew(trace_names=None, show_values=False):
|
|
"""Install a trace hook which writes incredibly detailed logs
|
|
about what code is being executed to stdout.
|
|
"""
|
|
sys.settrace(Spew(trace_names, show_values))
|
|
|
|
|
|
def unspew():
|
|
"""Remove the trace hook installed by spew.
|
|
"""
|
|
sys.settrace(None)
|
|
|