Alexander Klimetschek updated OAK-4825:
    Attachment: OAK-4825-b.patch

Attached [new patch|^OAK-4825-b.patch] (alternatively [on 

* introduce {{SyncResult.Status.ENABLE}} and {{DISABLE}} for more accurate 
status reporting (it is already detailed, so I figured this new feature should 
be covered)
* one caveat: if a user is re-enabled and updated along the way, you get 
{{ENABLE}} and not {{UPDATE}}
* only re-enable users if the {{users.disableMissing}} config is {{true}}; the 
at this point unlikely case of systems migrating from disable to the remove 
option would have to be handled by "manually" enabling affected users
* added a test that ensures this, i.e. that if the default remove option is on, 
the disabled status of users is not touched

> Support disabling of users instead of removal in DefaultSyncHandler
> -------------------------------------------------------------------
>                 Key: OAK-4825
>                 URL: https://issues.apache.org/jira/browse/OAK-4825
>             Project: Jackrabbit Oak
>          Issue Type: Improvement
>          Components: auth-external
>            Reporter: Alexander Klimetschek
>         Attachments: OAK-4825-b.patch, OAK-4825.patch
> The DefaultSyncHandler by default will remove (local) users when they are no 
> longer active in the external system aka no longer provided by the 
> ExternalIdentityProvider. It would be useful to have an option to _disable_ 
> users instead of removing them completely.
> This is good for use cases that need to keep the user's data around in the 
> JCR and can't just delete it. Also, we have seen cases where the user is only 
> temporarily removed from the external identity system (e.g. accidentally 
> removed from group that maps them to the JCR system and quickly added back), 
> where a full removal can do harm.
> (Note: There is an [option in the SyncContext 
> interface|https://github.com/apache/jackrabbit-oak/blob/trunk/oak-auth-external/src/main/java/org/apache/jackrabbit/oak/spi/security/authentication/external/SyncContext.java#L38]
>  to suppress purging, and the JMX sync commands such as 
> [purgeOrphanedUsers()|https://github.com/apache/jackrabbit-oak/blob/trunk/oak-auth-external/src/main/java/org/apache/jackrabbit/oak/spi/security/authentication/external/impl/jmx/Delegatee.java#L256]
>  "use" it. However, the JCR users look like "valid" users then locally. Even 
> if the authentication is done completely through the IDP and will fail 
> properly for these missing users, it can be difficult for other uses like 
> administration, monitoring, other application code to detect that such a user 
> is not active anymore.)

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