Allura/allura/tasks/event_tasks.py

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#       to you under the Apache License, Version 2.0 (the
#       "License"); you may not use this file except in compliance
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#
#         http://www.apache.org/licenses/LICENSE-2.0
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from __future__ import absolute_import
import sys

from allura.lib.decorators import task, event_handler
from allura.lib.exceptions import CompoundError
import six


@task
def event(event_type, *args, **kwargs):
    exceptions = []
    for t in event_handler.listeners[event_type]:
        try:
            t(event_type, *args, **kwargs)
        except Exception:
            exceptions.append(sys.exc_info())
    if exceptions:
        if len(exceptions) == 1:
            six.reraise(exceptions[0][0], exceptions[0][1], exceptions[0][2])
        else:
            raise CompoundError(*exceptions)