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comparison libervia/backend/tools/async_trigger.py @ 4231:e11b13418ba6

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plugin XEP-0353, XEP-0234, jingle: WebRTC data channel signaling implementation: Implement XEP-0343: Signaling WebRTC Data Channels in Jingle. The current version of the XEP (0.3.1) has no implementation and contains some flaws. After discussing this on xsf@, Daniel (from Conversations) mentioned that they had a sprint with Larma (from Dino) to work on another version and provided me with this link: https://gist.github.com/iNPUTmice/6c56f3e948cca517c5fb129016d99e74 . I have used it for my implementation. This implementation reuses work done on Jingle A/V call (notably XEP-0176 and XEP-0167 plugins), with adaptations. When used, XEP-0234 will not handle the file itself as it normally does. This is because WebRTC has several implementations (browser for web interface, GStreamer for others), and file/data must be handled directly by the frontend. This is particularly important for web frontends, as the file is not sent from the backend but from the end-user's browser device. Among the changes, there are: - XEP-0343 implementation. - `file_send` bridge method now use serialised dict as output. - New `BaseTransportHandler.is_usable` method which get content data and returns a boolean (default to `True`) to tell if this transport can actually be used in this context (when we are initiator). Used in webRTC case to see if call data are available. - Support of `application` media type, and everything necessary to handle data channels. - Better confirmation message, with file name, size and description when available. - When file is accepted in preflight, it is specified in following `action_new` signal for actual file transfer. This way, frontend can avoid the display or 2 confirmation messages. - XEP-0166: when not specified, default `content` name is now its index number instead of a UUID. This follows the behaviour of browsers. - XEP-0353: better handling of events such as call taken by another device. - various other updates. rel 441
author Goffi <goffi@goffi.org>
date Sat, 06 Apr 2024 12:57:23 +0200
parents 4b842c1fb686
children 0d7bb4df2343
comparison
equal deleted inserted replaced
4230:314d3c02bb67 4231:e11b13418ba6
18 # along with this program. If not, see <http://www.gnu.org/licenses/>. 18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
19 19
20 """Misc usefull classes""" 20 """Misc usefull classes"""
21 21
22 from typing import Tuple, Any 22 from typing import Tuple, Any
23
24 from libervia.backend.core.xmpp import SatXMPPEntity
23 from . import trigger as sync_trigger 25 from . import trigger as sync_trigger
24 from . import utils 26 from . import utils
25 from twisted.internet import defer 27 from twisted.internet import defer
26 28
27 class TriggerManager(sync_trigger.TriggerManager): 29 class TriggerManager(sync_trigger.TriggerManager):
28 """This is a TriggerManager with an new async_point method""" 30 """This is a TriggerManager with an new async_point method"""
29 31
30 @defer.inlineCallbacks 32 async def async_point(
31 def async_point(self, point_name, *args, **kwargs): 33 self,
34 point_name: str,
35 *args, **kwargs
36 ) -> bool:
32 """This put a trigger point with potentially async Deferred 37 """This put a trigger point with potentially async Deferred
33 38
34 All the triggers for that point will be run 39 All the triggers for that point will be run
35 @param point_name: name of the trigger point 40 @param point_name: name of the trigger point
36 @param *args: args to transmit to trigger 41 @param *args: args to transmit to trigger
39 when set to True, this argument don't let triggers stop 44 when set to True, this argument don't let triggers stop
40 the workflow 45 the workflow
41 @return D(bool): True if the action must be continued, False else 46 @return D(bool): True if the action must be continued, False else
42 """ 47 """
43 if point_name not in self.__triggers: 48 if point_name not in self.__triggers:
44 defer.returnValue(True) 49 return True
45 50
46 can_cancel = not kwargs.pop('triggers_no_cancel', False) 51 can_cancel = not kwargs.pop('triggers_no_cancel', False)
47 52
48 for priority, trigger in self.__triggers[point_name]: 53 for __, trigger in self.__triggers[point_name]:
49 try: 54 try:
50 cont = yield utils.as_deferred(trigger, *args, **kwargs) 55 cont = await utils.as_deferred(trigger, *args, **kwargs)
51 if can_cancel and not cont: 56 if can_cancel and not cont:
52 defer.returnValue(False) 57 return False
53 except sync_trigger.SkipOtherTriggers: 58 except sync_trigger.SkipOtherTriggers:
54 break 59 break
55 defer.returnValue(True) 60 return True
56 61
57 async def async_return_point( 62 async def async_return_point(
58 self, 63 self,
59 point_name: str, 64 point_name: str,
60 *args, **kwargs 65 *args, **kwargs