annotate sat/tools/async_trigger.py @ 2774:95321f233387

plugin pubsub schema: code formatting minor update
author Goffi <goffi@goffi.org>
date Sat, 12 Jan 2019 16:50:13 +0100
parents 003b8b4b56a7
children ab2696e34d29
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1 #!/usr/bin/env python2
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2 # -*- coding: utf-8 -*-
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3
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4 # SAT: a jabber client
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5 # Copyright (C) 2009-2019 Jérôme Poisson (goffi@goffi.org)
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6
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7 # This program is free software: you can redistribute it and/or modify
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8 # it under the terms of the GNU Affero General Public License as published by
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9 # the Free Software Foundation, either version 3 of the License, or
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10 # (at your option) any later version.
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11
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12 # This program is distributed in the hope that it will be useful,
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13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 # GNU Affero General Public License for more details.
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16
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17 # You should have received a copy of the GNU Affero General Public License
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18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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19
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20 """Misc usefull classes"""
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21
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22 from sat.tools import trigger as sync_trigger
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23 from twisted.internet import defer
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24
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25 class TriggerManager(sync_trigger.TriggerManager):
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26 """This is a TriggerManager with an new asyncPoint method"""
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27
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28 @defer.inlineCallbacks
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29 def asyncPoint(self, point_name, *args, **kwargs):
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30 """This put a trigger point with potentially async Deferred
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31
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32 All the triggers for that point will be run
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33 @param point_name: name of the trigger point
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34 @param *args: args to transmit to trigger
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35 @param *kwargs: kwargs to transmit to trigger
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36 if "triggers_no_cancel" is present, it will be popped out
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37 when set to True, this argument don't let triggers stop
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38 the workflow
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39 @return D(bool): True if the action must be continued, False else
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40 """
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41 if point_name not in self.__triggers:
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42 defer.returnValue(True)
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43
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44 can_cancel = not kwargs.pop('triggers_no_cancel', False)
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45
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46 for priority, trigger in self.__triggers[point_name]:
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47 try:
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48 cont = yield trigger(*args, **kwargs)
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49 if can_cancel and not cont:
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50 defer.returnValue(False)
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51 except sync_trigger.SkipOtherTriggers:
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52 break
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53 defer.returnValue(True)