[mod_callcenter] fix queue periodic announcement

[greenbea]

• Fixes announcement playing to channel even agent answered or member
  broke or timed out from the queue
• Fixes frequency counted when announcement starts playing causing
  announcements to overlap fixed by counting only when last announcement
  finishes

[laflammefrancois]

FYI the same happens when you set the Lua Script to announce members position as defined in the mod_callcenter documentation;

The caller must wait until the Lua Script execution goes back to freeswitch.msleep(mseconds) because the execution of api:executeString(uuid_broadcast, is never stopped by mod_callcenter.

[yois615]

@laflammefrancois - Have you tested this patch to see if it helps your issue?

[laflammefrancois]

@laflammefrancois - Have you tested this patch to see if it helps your issue?

No, I needed a solution for my production servers. I have instead implemented a patch in my lua script; I subscribe for the CUSTOM/Answer-State/CC-Queue event and send uuid_break to the call when the answered Answer-State event is received.

Sadly, I do not have the setup to test the fix, sorry about that.

[greenbea]

I've been using this fix in production without any issues for a couple of months

[yois615]

@greenbea - You're using it with uuid_broadcast in a LUA script? I don't see how your fix addresses @laflammefrancois problem.

I recompiled FS with this patch:
acbe390

But I haven't tested yet.

[greenbea]

I have a lua script I use for announcing the queue position, but that takes quickly to announce, so I didn't notice any issues.

The solution would be to have mod_callcenter control any announcement to the member session.

[yois615]

@greenbea Can you dynamically calculate the member position?

[greenbea]

@greenbea Can you dynamically calculate the member position?

A SQL query

[yois615]

@laflammefrancois I tested my patch listed above (acbe390) and it solves our problem.

[greenbea]

I force pushed some fixes

1. queue was being used after queue_rwunlock(queue) causing queue to point to unsafe memory.
2. fixed if queue gets reloaded with a new announcement the old announcement wasn't stopped

[yois615]

@andywolk This PR might also conflict with #1974

[yois615]

Correction - it does not conflict as it solves a different issue

[signalwire-ci]

Unit-tests failed: https://public-artifacts.signalwire.cloud/drone/signalwire/freeswitch/1036/artifacts.html

[signalwire-ci]

Unit-tests failed: https://public-artifacts.signalwire.cloud/drone/signalwire/freeswitch/1041/artifacts.html

[signalwire-ci]

Scan-build compilation failed: https://public-artifacts.signalwire.cloud/drone/signalwire/freeswitch/1043/scan-build-result.txt

[signalwire-ci]

Unit-tests failed: https://public-artifacts.signalwire.cloud/drone/signalwire/freeswitch/1043/artifacts.html

[signalwire-ci]

Scan-build compilation failed: https://public-artifacts.signalwire.cloud/drone/signalwire/freeswitch/1044/scan-build-result.txt

[signalwire-ci]

Unit-tests failed: https://public-artifacts.signalwire.cloud/drone/signalwire/freeswitch/1044/artifacts.html