Source Code for Module grassyknoll.concurrent.Fault

 1  """contains L{Fault}""" 
 2   
 3  import sys 
 4  import traceback 
 5  from functools import partial 
 6   
 7  import Message 
 8   
 9  __all__=['Fault', 'current_tb_message'] 
10   
11  # XXX this is basically identical to CrashError 
12 -class Fault(object): 
13      """handy encapsulation of an exception 
14       
15      @ivar type: the type of the exception 
16      @type type: type 
17       
18      @ivar value: the exception instance 
19      @type value: instance 
20       
21      @ivar traceback: a stringified traceback that produced the exception. May 
22      be None     
23      @type traceback: traceback 
24      """ 
25      __slots__=['type', 'value', 'traceback'] 
26       
27 -    def __init__(self, etype, value, tb=None): 
28          self.type=etype 
29          self.value=value 
30          if tb is not None: 
31              self.traceback="".join(traceback.format_exception(etype, value, tb)) 
32          else: 
33              self.traceback=None 
34   
35 -def current_tb_message(re_id=None, reply_box=None, include_tb=False): 
36      """create a message from the current exception 
37       
38      @arg re_id: the id of the message this is a response to 
39      @type re_id: L{Messsage.id} 
40       
41      @ivar reply_box: where responses for this message should be 
42      sent to. May be None. 
43      @type reply_box: L{MailBox.MailBox}     
44       
45      @arg include_tb: should a stringified traceback of the current exception 
46      @be included in the L{Fault} 
47      @type include_tb: Boolean 
48      """ 
49   
50      m = (partial(Message.Message, re_id=re_id) if re_id is not None 
51           else Message.Message) 
52       
53      return m(Fault(*(sys.exc_info()[:3 if include_tb else 2])), 
54               reply_box=reply_box) 
55