[Platform] SavedObject Mappings

[rudolf]

Allow plugins to register a Saved Object type with the associated Elasticsearch mappings.

Blocked by #52071

[elasticmachine]

Pinging @elastic/kibana-platform (Team:Platform)

[jasonrhodes]

Is there any rough estimate on when this work will be done? Our NP migration PR is blocked on this work right now, and we're trying to evaluate if we need to hack around it or if we can wait for this. Thanks so much!

[joshdover]

This is expected to be done in the next few weeks. @pgayvallet is working on some of the pre-req work right now.

Though I'm curious, how is this delaying your migration? You should be able to move all parts of your plugin to the New Platform while keeping a legacy plugin around with just these registration bits.

[jasonrhodes]

@joshdover thanks -- @Kerry350 can you say more about what's blocking us here? I guess what Josh describes is what I was referring to as "hacking around it" but I've got no idea how easy or difficult that is :)

[Kerry350]

@jasonrhodes @joshdover Yep - so we have a couple of places using saved objects, things like “saved views” on the metrics page etc. The “blocker” is more that we’re trying to migrate fully to the NP in this PR, and delete our legacy plugin and folder in its entirety. If we need to work around this by reinstating the legacy plugin for these registrations, then we can do that.

[pgayvallet]

#55012 was the blocking prerequisite for registering SO features such as mappings from NP and should be merged before the end of the week.

After that, implementing this issue should be rather easy. I'm expecting to start it next week. I should be done in a couple of week max.

[jasonrhodes]

@Kerry350 sounds like we should go with the legacy plugin work-around for now and revisit in a few weeks. Thanks, both!

[pgayvallet]

FYI, #55012 has been merged and I'm starting working on this issue. In the meantime, the legacy plugin work-around should be the way to go until this is ready.