Source Code for Module grassyknoll.concurrent.errors

 1  """errors for the concurrent package""" 
 2   
 3  import traceback 
 4   
 5  __all__=['ConcurrentError', 'TimeoutError', 'SendError', 'ReceiveError', 'BoxFullError', 
 6           'BoxClosedError', 'BoxEmptyError', 'CrashError'] 
 7   
 8 -class ConcurrentError(StandardError): 
 9      """base class for errors in this package""" 
10      pass 
11   
12 -class TimeoutError(ConcurrentError): 
13      """error for general timeouts""" 
14      pass 
15   
16 -class SendError(ConcurrentError): 
17      """error raised when sending fails""" 
18      pass 
19      
20 -class ReceiveError(ConcurrentError): 
21      """error raised when receive fails""" 
22      pass 
23   
24 -class BoxFullError(SendError): 
25      """error raised when a mailbox is full""" 
26      pass 
27   
28 -class BoxClosedError(SendError): 
29      """error raised when a mailbox is closed""" 
30   
31 -class BoxEmptyError(ReceiveError): 
32      """error raised when a mailbox is empty""" 
33      pass 
34   
35  # XXX this is basically identical to Fault 
36 -class CrashError(ConcurrentError): 
37      """error raised when a message recipient chokes 
38       
39      @ivar type: the type of the exception 
40      @type type: type 
41       
42      @ivar value: the exception instance 
43      @type value: instance 
44       
45      @ivar traceback: a stringified traceback that produced the exception. May 
46      be None     
47      @type traceback: traceback 
48      """ 
49      __slots__=['type', 'value', 'traceback'] 
50       
51 -    def __init__(self, etype, value, tb): 
52          self.type=etype 
53          self.value=value 
54          self.traceback="".join(traceback.format_exception(etype, value, tb)) 
55          ## Exception constructors are totally braindamaged, just do something. 
56          ## see http://docs.python.org/lib/module-exceptions.html 
57          Exception.__init__(self, etype, value, self.traceback) 
58