[asterisk-dev] [Code Review] 4549: ARI: Add the ability to intercept hold and raise an event

[Mark Michelson]

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One thing to take into consideration here is that there are some places within Asterisk where we will send an AST_CONTROL_UNHOLD frame on a channel, even though it may not currently be on hold. This means you may send some unhold ARI events that don't match up with a previous hold event. This is probably worth documenting somewhere so that ARI application writers know what they might have to deal with.

- Mark Michelson


On March 28, 2015, 3:19 a.m., Matt Jordan wrote:
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> This is an automatically generated e-mail. To reply, visit:
> https://reviewboard.asterisk.org/r/4549/
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> (Updated March 28, 2015, 3:19 a.m.)
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> 
> Review request for Asterisk Developers and Joshua Colp.
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> Bugs: ASTERISK-24922
>     https://issues.asterisk.org/jira/browse/ASTERISK-24922
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> Repository: Asterisk
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> Description
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> For some applications - such as SLA - a phone pressing hold should not behave in the fashion that the Asterisk core would like it to. Instead, the hold action has some application specific behaviour associated with it - such as disconnecting the channel that initiated the hold; only playing MoH to channels in the bridge if the channels are of a particular type, etc.
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> One way of accomplishing this is to use a framehook to intercept the hold/unhold frames, raise an event, and eat the frame. Tasty. The patch attached to this issue accomplished that as a new dialplan function, HOLD_INTERCEPT.
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> In addition:
> * ARI now queues hold/unhold frames instead of indicating frames directly. This allows for the Stasis hold/unhold messages to be raised.
> * Some general cleanup of raising hold/unhold Stasis messages was done, including removing some RAII_VAR usage.
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> 
> Diffs
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>   /branches/13/rest-api/api-docs/events.json 433677 
>   /branches/13/res/stasis/control.c 433677 
>   /branches/13/res/stasis/app.c 433677 
>   /branches/13/res/ari/ari_model_validators.c 433677 
>   /branches/13/res/ari/ari_model_validators.h 433677 
>   /branches/13/main/stasis_channels.c 433677 
>   /branches/13/main/manager_channels.c 433677 
>   /branches/13/main/channel.c 433677 
>   /branches/13/main/bridge_channel.c 433677 
>   /branches/13/funcs/func_holdintercept.c PRE-CREATION 
>   /branches/13/CHANGES 433677 
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> Diff: https://reviewboard.asterisk.org/r/4549/diff/
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> Testing
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> See Gerrit reviews:
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> https://gerrit.asterisk.org/#/c/16
> https://gerrit.asterisk.org/#/c/17
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> 
> Thanks,
> 
> Matt Jordan
> 
>

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