[jira] [Commented] (OAK-5210) Ability to resolve principal name from ExternalIdentityRef without IDP roundtrip

["angela (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/OAK-5210?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15712493#comment-15712493 ] 

angela commented on OAK-5210:
-----------------------------

Initial suggestion as provided by [~baedke] in OAK-5209:

{quote}
[...] for instance by adding a getter for the principal name to the interface ExternalIdentityRef.
{quote}

> Ability to resolve principal name from ExternalIdentityRef without IDP roundtrip
> --------------------------------------------------------------------------------
>
>                 Key: OAK-5210
>                 URL: https://issues.apache.org/jira/browse/OAK-5210
>             Project: Jackrabbit Oak
>          Issue Type: New Feature
>          Components: auth-external
>            Reporter: angela
>
> Currently the only way to reliably determine the principal name for a given external identity is by calling {{ExternalIdentity.getPrincipalName()}}. This also means that there is currently no way to resolve the principal name from a given {{ExternalIdentityRef}}, without calling {{ExternalIdentityProvider.getIdentity(ExternalIdentityRef)}}.
> In the default sync mode a given identity-ref will always be resolved to the associated identity once a given identity is up for (re)sync and thus the identity resolution is part of the synchronization. On the other hand the partial sync as provided by the {{DynamicSyncContext}} doesn't require the resolution of group identities but only needs to be able to obtain the principal name, which is needed to proper populate the subject upon repository login (and for permission setup for those group principals). In this setup it would be preferrable if the principal name could be resolved from the {{ExternalIdentityRef}} without the intermediate identity resolution.
> This aim of this issue is to discuss the different options on how to achieve this improvement in a generic way that doesn't make any assumptions regarding the relationship between {{ExternalIdentity.getId}}, {{ExternalIdentity.getPrincipalName}} and {{ExternalIdentityRef.getId}}.
> See also OAK-4930 and OAK-5200 for additional information.



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