Hi Dilli,

Thanks for reaching out to the Sentry dev list. Please see my comments
inline below:

On Thu, Sep 12, 2013 at 11:09 AM, Dilli Arumugam
<[email protected]>wrote:

> Hi Team,
>
> Trying to understand Sentry architecture and layers hoping to adopt and
> contribute to Sentry.
>
> Would appreciate any pointers and clarifications from the current
> committers.
>
> May be I did not find the right documentation or not reading the
> documentation and code  right.
>
> Quickly browsed code checked out from
>       https://github.com/cloudera/access.git
> to get some insight.
>

This was the old repository. The new repository is at
https://git-wip-us.apache.org/repos/asf/incubator-sentry.git

There is also a brief write-up on how to contribute to Sentry that you can
find here:
https://cwiki.apache.org/confluence/display/SENTRY/How+to+Contribute



>
> It appears that Sentry segregates concerns into different layers
>
>
> sentry-core
>
> sentry-provider  with  sublayer sentry-provider-file
>
> sentry-bonding  with  sublayer sentry-binding-hive
>
>
> That is nice.
>
>
> But, code from sentry-core has classes and concepts such as Server,
> Database, Table, View etc.
>
> This, in my opinion does not belong in sentry-core and belongs to
> sentry-binding-hive.
>
> Would appreciate your comments and thoughts.
>

This is a good observation, and we are of the same opinion too. There is no
one model yet for Sentry to implement and hence these concepts need to be
factored out of the core module. We will be doing the refactoring for this
soon to clean things up and make room for more security models to come in.



>
>
> Was debating whether Sentry team evaluated Shiro as an authorization
> framework.
>
>
> Looked into sentry pom file and found that Sentry pulls in Shiro
> dependency.
>
>
> But, looking into Sentry code indicates Sentry is using only a few classes
> from Shiro more like utility classes than using Shiro as authorization
> framework.
>
>
> Did Sentry team evaluate Shiro as authorization framework and then dropped
> it to choose only some utility classes from Shiro?
>
> Would appreciate your comments and thoughts.
>

Yes we did evaluate Shiro to a certain extent early on but decided to
continue without it. However, it is not a hard decision and once we have
more development done, we can certainly take a closer look at bringing it
in if necessary.

Regards,
Arvind Prabhakar


>
> Thanks
>
> Dilli
>
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