[Asterisk-code-review] endpoint/stasis: Eliminate duplicate events on endpoint stat... (asterisk[13])

[Matt Jordan]

Matt Jordan has uploaded a new patch set (#11).

Change subject: endpoint/stasis: Eliminate duplicate events on endpoint status change
......................................................................

endpoint/stasis: Eliminate duplicate events on endpoint status change

When an endpoint is created, its messages are forwarded to both the tech
endpoint topic and the all endpoints topic. This is done so that various
parties interested in endpoint messages can subscribe to just the tech
endpoint and receive all messages associated with that particular technology,
as opposed to subscribing to the all endpoints topic. Unfortunately, when the
tech endpoint is created, it also forwards all of its messages to the all
topic. This results in duplicate messages whenever an endpoint publishes its
messages.

This patch resolves the duplicate message issue by creating a new function
for Stasis caching topics, stasis_cp_sink_create. In most respects, this acts
as a normal caching topic, save that it no longer forwards messages it receives
to the all endpoints topic. This allows it to act as an aggregation "sink",
while preserving the necessary caching behaviour.

ASTERISK-25137 #close
Reported-by: Vitezslav Novy

ASTERISK-25116 #close
Reported-by: George Joseph <george.joseph at fairview5.com>
Tested-by: George Joseph <george.joseph at fairview5.com>

Change-Id: Ie47784adfb973ab0063e59fc18f390d7dd26d17b
---
M include/asterisk/stasis_cache_pattern.h
M main/endpoints.c
M main/stasis_cache_pattern.c
3 files changed, 86 insertions(+), 21 deletions(-)


  git pull ssh://gerrit.asterisk.org:29418/asterisk refs/changes/70/570/11
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Gerrit-MessageType: newpatchset
Gerrit-Change-Id: Ie47784adfb973ab0063e59fc18f390d7dd26d17b
Gerrit-PatchSet: 11
Gerrit-Project: asterisk
Gerrit-Branch: 13
Gerrit-Owner: George Joseph <george.joseph at fairview5.com>
Gerrit-Reviewer: Anonymous Coward #1000019
Gerrit-Reviewer: Ashley Sanders <asanders at digium.com>
Gerrit-Reviewer: David M. Lee <dlee at digium.com>
Gerrit-Reviewer: George Joseph <george.joseph at fairview5.com>
Gerrit-Reviewer: Joshua Colp <jcolp at digium.com>
Gerrit-Reviewer: Matt Jordan <mjordan at digium.com>