[jira] [Commented] (WICKET-6508) Automatically monitoring access to data objects (lambdamodels propertymodels) in wicket gui

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

    [ https://issues.apache.org/jira/browse/WICKET-6508?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16315451#comment-16315451 ] 

manuel barzi commented on WICKET-6508:
--------------------------------------

hi [~mmakundi], here a starting proposal based on Dynamic Proxy API https://github.com/manuelbarzi/wicket-dynamic-proxy-factory (already within a wicket quickstart).

> Automatically monitoring access to data objects (lambdamodels propertymodels) in wicket gui
> -------------------------------------------------------------------------------------------
>
>                 Key: WICKET-6508
>                 URL: https://issues.apache.org/jira/browse/WICKET-6508
>             Project: Wicket
>          Issue Type: New Feature
>          Components: wicket
>    Affects Versions: 8.0.0-M8
>            Reporter: Martin Makundi
>            Priority: Minor
>   Original Estimate: 8h
>  Remaining Estimate: 8h
>
> The [GDPR|https://www.eugdpr.org/] was approved by the EU Parliament on 14 April 2016, and it brings strict requirements to monitoring and logging things like data access (see also [GDPR – A PRACTICAL GUIDE FOR DEVELOPERS|https://techblog.bozho.net/gdpr-practical-guide-developers/]).
> We are investigating ways to automatically monitor and log access to data objects in wicket gui.
> Oldschool solutions would be, for example to override/customize PropertyModel and montor target object and method invoked, and possibly result value, together with necessary information from session (timestamp, user id, authorization level, etc.).
> However, with wicket 8 and java 8 lambda possibilities, I am wondering if there would be  some ingenious suggestion how to do this very nicely by implementing own AuditTrailSerializableFunction or similar?
> Might need to wrap the data objects in some sort of proxy but that would be ok:
> * https://gist.github.com/jhorstmann/de367a42a08d8deb8df9
> * https://stackoverflow.com/questions/13356326/how-can-i-log-every-method-called-in-a-class-automatically-with-log4j
> * https://stackoverflow.com/questions/3291637/alternatives-to-java-lang-reflect-proxy-for-creating-proxies-of-abstract-classes
> Would be nice if wicket would provide reusable blueprints for this, like it does for general authorization functionalities.
> It could have methods like isAuthorized before invoking get or set and log if not authorized and throw exception. 
> When model access is authroized, it would have methods like logAccess() which will log (as necessary) how and what is accessed. Logging implementation will take care of optimizing frequent logs etc.
> Possibly it could be applied to both propertymodel and lamba model as a "model listener" or something.
> Proposals welcome, we will be submitting something soon.



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