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Add on_error event for doing something about uncaught exceptions.

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This commit is contained in:
Rapptz 2015-09-05 00:46:18 -04:00
parent 568c2a773b
commit 4aecd5f7b5
2 changed files with 17 additions and 3 deletions
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7
discord/client.py
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@ -38,7 +38,7 @@ import json, re, time, copy
from collections import deque from collections import deque
from threading import Timer from threading import Timer
from ws4py.client.threadedclient import WebSocketClient from ws4py.client.threadedclient import WebSocketClient
from sys import platform as sys_platform import sys
def _null_event(*args, **kwargs): def _null_event(*args, **kwargs):
pass pass
@ -197,7 +197,8 @@ class Client(object):
try: try:
self.events[event_name](*args, **kwargs) self.events[event_name](*args, **kwargs)
except Exception as e: except Exception as e:
pass self.events['error'](event_name, *sys.exc_info())
def _received_message(self, msg): def _received_message(self, msg):
response = json.loads(str(msg)) response = json.loads(str(msg))
@ -511,7 +512,7 @@ class Client(object):
'd': { 'd': {
'token': self.token, 'token': self.token,
'properties': { 'properties': {
'$os': sys_platform, '$os': sys.platform,
'$browser': 'discord.py', '$browser': 'discord.py',
'$device': 'discord.py', '$device': 'discord.py',
'$referrer': '', '$referrer': '',

13
docs/api.rst
View File

@ -30,6 +30,19 @@ All events are 'sandboxed', in that if an exception is thrown while the event is
Called when the client disconnects for whatever reason. Be it error or manually. Called when the client disconnects for whatever reason. Be it error or manually.
.. function:: on_error(event, type, value, traceback)
Usually when an event throws an uncaught exception, it is swallowed. If you want to handle
the uncaught exceptions for whatever reason, this event is called. If an exception is thrown
on this event then it propagates (i.e. it is not swallowed silently).
The parameters for this event are retrieved through the use of ``sys.exc_info()``.
:param event: The event name that had the uncaught exception.
:param type: The type of exception that was swallowed.
:param value: The actual exception that was swallowed.
:param traceback: The traceback object representing the traceback of the exception swallowed.
.. function:: on_message(message) .. function:: on_message(message)
Called when a message is created and sent to a server. Called when a message is created and sent to a server.