Mercurial > libervia-backend
annotate libervia/backend/tools/async_trigger.py @ 4087:f8284f994948
tools (common/data_objects): fix import of Markup following change after Jinja2 version bump
author | Goffi <goffi@goffi.org> |
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date | Thu, 08 Jun 2023 21:26:09 +0200 |
parents | 4b842c1fb686 |
children | e11b13418ba6 |
rev | line source |
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3028 | 1 #!/usr/bin/env python3 |
3137 | 2 |
2645 | 3 |
4 # SAT: a jabber client | |
3479 | 5 # Copyright (C) 2009-2021 Jérôme Poisson (goffi@goffi.org) |
2645 | 6 |
7 # This program is free software: you can redistribute it and/or modify | |
8 # it under the terms of the GNU Affero General Public License as published by | |
9 # the Free Software Foundation, either version 3 of the License, or | |
10 # (at your option) any later version. | |
11 | |
12 # This program is distributed in the hope that it will be useful, | |
13 # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 # GNU Affero General Public License for more details. | |
16 | |
17 # You should have received a copy of the GNU Affero General Public License | |
18 # along with this program. If not, see <http://www.gnu.org/licenses/>. | |
19 | |
20 """Misc usefull classes""" | |
21 | |
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22 from typing import Tuple, Any |
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23 from . import trigger as sync_trigger |
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24 from . import utils |
2645 | 25 from twisted.internet import defer |
26 | |
27 class TriggerManager(sync_trigger.TriggerManager): | |
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28 """This is a TriggerManager with an new async_point method""" |
2645 | 29 |
30 @defer.inlineCallbacks | |
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31 def async_point(self, point_name, *args, **kwargs): |
2645 | 32 """This put a trigger point with potentially async Deferred |
33 | |
34 All the triggers for that point will be run | |
35 @param point_name: name of the trigger point | |
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36 @param *args: args to transmit to trigger |
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37 @param *kwargs: kwargs to transmit to trigger |
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38 if "triggers_no_cancel" is present, it will be popped out |
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39 when set to True, this argument don't let triggers stop |
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40 the workflow |
2645 | 41 @return D(bool): True if the action must be continued, False else |
42 """ | |
43 if point_name not in self.__triggers: | |
44 defer.returnValue(True) | |
45 | |
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46 can_cancel = not kwargs.pop('triggers_no_cancel', False) |
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47 |
2645 | 48 for priority, trigger in self.__triggers[point_name]: |
49 try: | |
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50 cont = yield utils.as_deferred(trigger, *args, **kwargs) |
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51 if can_cancel and not cont: |
2645 | 52 defer.returnValue(False) |
53 except sync_trigger.SkipOtherTriggers: | |
54 break | |
55 defer.returnValue(True) | |
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56 |
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57 async def async_return_point( |
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58 self, |
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59 point_name: str, |
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60 *args, **kwargs |
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61 ) -> Tuple[bool, Any]: |
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62 """Async version of return_point""" |
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63 if point_name not in self.__triggers: |
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64 return True, None |
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65 |
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66 for priority, trigger in self.__triggers[point_name]: |
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67 try: |
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68 cont, ret_value = await utils.as_deferred(trigger, *args, **kwargs) |
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69 if not cont: |
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70 return False, ret_value |
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71 except sync_trigger.SkipOtherTriggers: |
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72 break |
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73 return True, None |
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74 |