[asterisk-bugs] [JIRA] (ASTERISK-21571) API Enhancements - CEL refactoring - cleanup

[Matt Jordan (JIRA)]

Matt Jordan created ASTERISK-21571:
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             Summary: API Enhancements - CEL refactoring - cleanup
                 Key: ASTERISK-21571
                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-21571
             Project: Asterisk
          Issue Type: New Feature
          Components: CEL/General, Core/Stasis
            Reporter: Matt Jordan


Yay, CEL!

With Stasis-Core, we no longer need a bunch of CEL events all over the code, as the state of channels and bridges is conveyed across the Stasis-Core message bus. The final step is to refactor the following:

* Determine when a call is being forwarded. We currently don't have a Stasis-Core message for this, and we typically infer this by a dial message. If needed, add a new JSON blob to the various Dial messages raised when a call forward occurs and raise AST_CEL_FORWARD. Note both {{app_dial}} and {{app_queue}} do this currently.
* Remove AST_CEL_BRIDGE_UPDATE. Masquerades shouldn't occur in situations that aren't accounted for both other operations.
* Add a CEL topic with a generic JSON blob message. Add a message router for this.
** Refactor the generic CEL user event to publish to this topic. Send the message as JSON; put out over CEL.
** Refactor instances of AST_CEL_HOOKFLASH, AST_CEL_3WAY_START, AST_CEL_3WAY_END to use JSON to the CEL topic.


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