blob: efef158160c520fcf1555835f7753dbfb1fff845 [file] [log] [blame]
import os
import inspect
def trace_function(function, log_calls, log_results, label=''):
def wrapper(*args, **kwargs):
kwarg_strs = ['{}={}'.format(k, v) for (k, v) in kwargs]
arg_str = ', '.join([str(a) for a in args] + kwarg_strs)
call_str = '{}({})'.format(function.func_name, arg_str)
# Perform the call itself, logging before, after, and anything thrown.
if log_calls:
print '{}: Calling {}'.format(label, call_str)
res = function(*args, **kwargs)
if log_results:
print '{}: {} -> {}'.format(label, call_str, res)
return res
except Exception as ex:
if log_results:
print '{}: {} raised {}'.format(label, call_str, type(ex))
raise ex
return wrapper
def trace_object(obj, log_calls, log_results, label=''):
for name, member in inspect.getmembers(obj):
if inspect.ismethod(member):
# Skip meta-functions, decorate everything else
if not member.func_name.startswith('__'):
setattr(obj, name, trace_function(member, log_calls,
log_results, label))
return obj