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[identity] Modify FindUserID response to respect reserved_usernames
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Authored by bartek on Nov 27 2023, 4:59 AM.
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Details

Summary

Addresses ENG-5802.

Added is_reserved field to FindUserIDResponse to indicate if the username/wallet address is in the reserved_usernames list.
Followed the logic that we discussed in the Linear task.

Depends on D10052

Test Plan
  • Created a user (not-reserved) and checked the response: userID != null, is_reserved == false
  • Added the same user to the reserved_usernames list and checked the response: userID != null, is_reserved == false
  • Added a username to the reserved list and checked the response: userID == null, is_reserved == true
  • For other cases, checked the response: userID == null, is_reserved == false

Also tested wallet addresses

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Event Timeline

bartek held this revision as a draft.
bartek published this revision for review.Nov 27 2023, 6:47 AM

Now I think that maybe we should make is_reserved independent of userID, so:

  • userID not null if the user is registered with Identity (current behavior)
  • is_reserved = true if given username is in the reserved_usernames table, regardless of it being registered with Identity (instead of false)

Either way, the client is able to deduce if a username is a) registered with Identity; b) reserved; c) available

I'm okay with that proposed change. The important thing is that the client should be able to deduce whether a username is available or not.

This revision is now accepted and ready to land.Nov 29 2023, 6:27 AM
services/identity/src/grpc_services/authenticated.rs
265 ↗(On Diff #33725)

tokio::join is pretty handy... i wonder if there are other places where we should be using it

Applied the suggested change.

Clients can deduce if username is available with the following condition:

username_available = user_id == null && is_reserved == false;
// or reversed if you prefer
username_taken = user_id != null || is_reserved == true;