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Revert "stasis_cache: Stop caching stasis subscription change messages"

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This reverts commit 5ec6d2c33e.

This commit caused issues with polling when combined with
the revert commit "Revert "app_voicemail: Remove need to subscribe to stasis"

ASTERISK-28222
Reported by: abelbeck

Change-Id: I1e83a433e4202574181bc128dce876ef24936a52
This commit is contained in:
George Joseph
2018-12-26 11:26:36 -05:00
parent 31bacc2354
commit 4c084c6b1b
1 changed files with 22 additions and 9 deletions
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31
main/stasis_cache.c
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@@ -854,16 +854,29 @@ static void caching_topic_exec(void *data, struct stasis_subscription *sub,
msg_type = stasis_message_type(message);
/*
* app_voicemail used to rely on the cache containing every topic subscribe and
* unsubscribe in order to determine if anyone was currently subscribed to a
* particular mailbox. This caused the cache to grow unabated for the life of
* the asterisk instance. Since it no longer needs the cache of these message
* types, and no other function needs them, we no longer cache them.
*/
if (stasis_subscription_change_type() == msg_type) {
ao2_cleanup(caching_topic_needs_unref);
return;
struct stasis_subscription_change *change = stasis_message_data(message);
/*
* If this change type is an unsubscribe, we need to find the original
* subscribe and remove it from the cache otherwise the cache will
* continue to grow unabated.
*/
if (strcmp(change->description, "Unsubscribe") == 0) {
struct stasis_cache_entry *sub;
ao2_wrlock(caching_topic->cache->entries);
sub = cache_find(caching_topic->cache->entries, stasis_subscription_change_type(), change->uniqueid);
if (sub) {
cache_remove(caching_topic->cache->entries, sub, stasis_message_eid(message));
ao2_cleanup(sub);
}
ao2_unlock(caching_topic->cache->entries);
ao2_cleanup(caching_topic_needs_unref);
return;
}
msg_put = message;
msg = message;
} else if (stasis_cache_clear_type() == msg_type) {
/* Cache clear event. */
msg_put = NULL;