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https://issues.apache.org/jira/browse/ISIS-2626?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17334519#comment-17334519
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Andi Huber commented on ISIS-2626:
----------------------------------

Having another Filter should do the trick, while nicely separating concerns.

Though we do have one similar interception mechanism in place, that is when the 
meta-model is invalid, a special page is served, listing all the validation 
failures. I was wondering whether we can just reuse this hook for the case, 
when the app is not yet fully initialized.

Perhaps the "not yet ready" page could include a hyperlink to whatever the user 
submitted, allowing the user to retry.

> Do not serve HTTP requests until the Application is fully initialized.
> ----------------------------------------------------------------------
>
>                 Key: ISIS-2626
>                 URL: https://issues.apache.org/jira/browse/ISIS-2626
>             Project: Isis
>          Issue Type: Improvement
>          Components: Isis Core
>            Reporter: Andi Huber
>            Assignee: Andi Huber
>            Priority: Major
>             Fix For: 2.0.0-M6
>
>
> That's currently a denial of service vector, as HTTP requests that happen too 
> early during bootstrapping have the side effect of triggering meta-model 
> validation too early, which leaves the application in an unusable state. As 
> meta-model validation, while yet only partly inspected, will most likely lead 
> to a validation failure that renders the application permanently broken until 
> restarted.



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