| 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. |
| try: |
| 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 |
