59 lines
2.1 KiB
Python
59 lines
2.1 KiB
Python
"""The debug module contains utilities and functions for better
|
|
debugging Eventlet-powered applications."""
|
|
|
|
__all__ = ['spew', 'unspew']
|
|
|
|
|
|
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 = '\t'
|
|
tokens = line.translate(
|
|
string.maketrans(' ,.()', '\0' * 5)).split('\0')
|
|
for tok in tokens:
|
|
if tok in frame.f_globals:
|
|
details += '%s=%r ' % (tok, frame.f_globals[tok])
|
|
if tok in frame.f_locals:
|
|
details += '%s=%r ' % (tok, frame.f_locals[tok])
|
|
if details.strip():
|
|
print 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) |