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"""
SleekXMPP: The Sleek XMPP Library
Copyright (C) 2010 Nathanael C. Fritz
This file is part of SleekXMPP.
See the file LICENSE for copying permission.
"""
import logging
import traceback
import sys
from sleekxmpp.exceptions import XMPPError
from sleekxmpp.stanza import Error
from sleekxmpp.xmlstream import ET, StanzaBase, register_stanza_plugin
log = logging.getLogger(__name__)
class RootStanza(StanzaBase):
"""
A top-level XMPP stanza in an XMLStream.
The RootStanza class provides a more XMPP specific exception
handler than provided by the generic StanzaBase class.
Methods:
exception -- Overrides StanzaBase.exception
"""
def exception(self, e):
"""
Create and send an error reply.
Typically called when an event handler raises an exception.
The error's type and text content are based on the exception
object's type and content.
Overrides StanzaBase.exception.
Arguments:
e -- Exception object
"""
self.reply()
if isinstance(e, XMPPError):
# We raised this deliberately
self['error']['condition'] = e.condition
self['error']['text'] = e.text
if e.extension is not None:
# Extended error tag
extxml = ET.Element("{%s}%s" % (e.extension_ns, e.extension),
e.extension_args)
self['error'].append(extxml)
self['error']['type'] = e.etype
self.send()
else:
# We probably didn't raise this on purpose, so send an error stanza
self['error']['condition'] = 'undefined-condition'
self['error']['text'] = "SleekXMPP got into trouble."
self.send()
# log the error
log.exception('Error handling {%s}%s stanza' %
(self.namespace, self.name))
# Finally raise the exception, so it can be handled (or not)
# at a higher level by using sys.excepthook.
raise e
register_stanza_plugin(RootStanza, Error)
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