[WIP] MSC3865: User-given attributes for users

[Zocker1999NET]

• rendered
• split from MSC3864, which now only declares user-given attributes for rooms
• Matrix Room for discussion #mscs-3015-3864-3865:matrix.org

Signed-off-by: Felix Stupp felix.stupp+github@banananet.work

[dklimpel]

Related to:

• WIPish: MSC1769: Extensible profiles as rooms #1769

[Mart-Bogdan]

As I understend size of single item in User Config is limited at 64 KiB

https://matrix.to/#/!NasysSDfxKxZBzJJoE:matrix.org/$ArNvLz_XK2CoXVb64g99ns6o-8DYIbDz0Ze_6NXMBaI?via=matrix.org&via=envs.net&via=element.io

So it can be an issue if somebody store too much data in m.user_given.user.description

Perhaps we need to store data for each user individually? like m.user_given.@alice:example.com.description.

Sadly it would explode amount of user data stored, IDK if this can cause problems.

Other option is to create m.user_given.user.description.2 when first one run out of storage.

[tusooa]

Just so you know, I am implementing this in kazv: https://iron.lily-is.land/T77

[tusooa]

As this is done in kazv ( https://iron.lily-is.land/T77 ) I think we should remove the needs-implementation label.

[uhoreg]

Suggested change

	To get the new event type, the prefix `m.user_given.user.` shall be appended to the attribute's name.
	To get the new event type, the prefix `m.user_given.user.` shall be prepended to the attribute's name.

is more appropriate, since it goes at the beginning.