[asterisk-dev] [Code Review] 3929: ARI: Holding bridge issues with bridge Music on Hold, playback operations, and default channel roles

rmudgett reviewboard at asterisk.org
Fri Aug 29 20:30:31 CDT 2014


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Ship it!


Don't have anything else to say about the patch.

- rmudgett


On Aug. 29, 2014, 7:31 p.m., Matt Jordan wrote:
> 
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> https://reviewboard.asterisk.org/r/3929/
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> 
> (Updated Aug. 29, 2014, 7:31 p.m.)
> 
> 
> Review request for Asterisk Developers.
> 
> 
> Bugs: ASTERISK-24264
>     https://issues.asterisk.org/jira/browse/ASTERISK-24264
> 
> 
> Repository: Asterisk
> 
> 
> Description
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> 
> When ARI manipulates a bridge, it generally doesn't care what the mixing technology is. Operations should initiate on the bridge regardless of its mixing technology - and while that mixing technology may determine the experience channels within the bridge have, the actual operations themselves should be the same.
> 
> This isn't the case with holding bridges. Currently, the following issues exist:
>  * Music on Hold is played into a bridge using an Announcer channel. There are two issues with it currently:
>    (1) The Music on Hold channel is also not marked as being allowed within a Stasis bridge, so it generally never makes it into the bridge (of any type).
>    (2) Even if it did, because it does not have a bridge role of "announcer", it joins the holding bridge as a participant. Additionally, the holding bridge starts MoH on the Announcer channel (which is ironic, but not super useful).
>  * Playback channels do not join as an announcer. Playing back announcements using the /play operation would not be heard by participants.
>  * Participants join without a role. As such, MoH is started for the channels automatically; however, subsequent bridge operations that would stop MoH would fail (as there is no Announcer channel playing MoH to the bridge). From the perspective of ARI users, this is counter-intuitive - I would not expect MoH to be started for me. The mixing technology determines how media is shared between participants, not the application experience.
> 
> This patch does the following:
>  * The Stasis bridge class now inspects channels as they are going into a bridge. If the bridge has a holding capability, and the channel has no roles, we give it a participant role and mark the default behaviour to have no entertainment. This allows addChannel operations to continue to set a participant role with an entertainment option if it felt like it (or could do it).
>  * The playback channel now gets a role of announcer, as does the music on hold channel. For mixing technologies this is a NoOp; for holding bridges it means the channels should have the expected behaviour.
>  * The music on hold channel is now Stasis approved (tm)
>  * Finally, a small bug in 'core show channel' was observed, in that we attempted to calculate CDR variables for internal channels. That generates an annoying warning; internal channels now no longer attempt to access CDR data.
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> 
> Diffs
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>   /branches/12/res/stasis/stasis_bridge.c 422438 
>   /branches/12/res/res_stasis.c 422438 
>   /branches/12/main/cli.c 422438 
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> Diff: https://reviewboard.asterisk.org/r/3929/diff/
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> 
> Testing
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> The bridge-infinite-wait examples on the wiki (that Sam and I are working on) now ... work.
> 
> 
> Thanks,
> 
> Matt Jordan
> 
>

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