[KARAF-4496] UserPrincipal lookup in the JAAS' BackingEngine

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 4.2.0, 4.1.5
• Component/s: karaf
• Labels: jaas
• Assignee: Jean-Baptiste Onofré
• Reporter: Yurii Rashkovskii
• Created: 16/Apr/16 17:21
• Updated: 15/Sep/18 05:45
• Resolved: 07/Feb/18 10:07

Description

I have a suggestion for improving org.apache.karaf.jaas.modules.BackingEngine

Currently, the only way to lookup an individual user (as far as I can tell) is to iterate through the result of BackingEngine#listUsers() and find the required user. This is fine if the number of users is reasonably low. However, when JAAS infrastructure is used for public systems (say, a SaaS), it quickly becomes a bottleneck.

I suggest adding something like `public UserPrincipal lookupUser(String name)` to avoid this problem (also, it should return `null` if no such user found , or throw an exception)

I am happy to contribute a PR promptly if this change will be approved.

Thoughts?

Issue Links

• links to: GitHub Pull Request #441