Mercurial > libervia-backend
annotate libervia/backend/tools/async_trigger.py @ 4202:b26339343076
core: use a user specific directory for PID file:
default location of pid file is now specific to logged user, this allow to run several
instances of Libervia by different users on the same machine without PID conflicts.
| author | Goffi <goffi@goffi.org> |
|---|---|
| date | Sun, 14 Jan 2024 17:48:02 +0100 |
| parents | 4b842c1fb686 |
| children | e11b13418ba6 |
| rev | line source |
|---|---|
| 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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parents:
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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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parents:
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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 |