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https://issues.apache.org/jira/browse/TINKERPOP-2389?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17222208#comment-17222208
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ASF GitHub Bot commented on TINKERPOP-2389:
-------------------------------------------

spmallette commented on a change in pull request #1308:
URL: https://github.com/apache/tinkerpop/pull/1308#discussion_r513505446



##########
File path: docs/src/dev/provider/index.asciidoc
##########
@@ -1147,25 +1147,64 @@ one key value pair present (since only one `Traversal` 
is being submitted, there
 single alias).
 |=========================================================
 
-=== Authentication
+=== Authentication and authorization

Review comment:
       As expansive as our documentation is, we still continue to get feedback 
that it is confusing, incomplete, etc. Perhaps reorganization wouldn't be a 
really bad thing except that it means "more work". Let's see what your next 
iteration of this PR looks like and we can discuss further then.




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> Authorization support in TinkerPop
> ----------------------------------
>
>                 Key: TINKERPOP-2389
>                 URL: https://issues.apache.org/jira/browse/TINKERPOP-2389
>             Project: TinkerPop
>          Issue Type: Improvement
>          Components: server
>    Affects Versions: 3.4.7
>            Reporter: Shekhar Bansal
>            Priority: Major
>         Attachments: Screenshot 2020-06-25 at 15.15.04.png
>
>
> Use case:
>  # Tinkerpop supports multiple graphs using a single API and admin might want 
> to restrict access to some of the graphs.
>  # Admin might want to restrict read/write access to certain users.
>  
> Proposal
> Add read/write access restrictions at graph level. We can extend it to 
> executing scripts by adding execute privileges.
>  
> Changes required
> Add `authorizer` block similar to `authentication` block in yaml file
>  
> {code:java}
> authorization: {
>   authorizer: 
> org.apache.tinkerpop.gremlin.server.authorization.AllowAllAuthorizer,
>   authorizationHandler: 
> org.apache.tinkerpop.gremlin.server.handler.SaslAuthorizationHandler,
>   config: {
>    }
> }{code}
>  
> Authorization will be done only if authentication is enabled. Authentication 
> is done at per session basis while authorization will be done for each and 
> every request.
> In `SaslAuthorizationHandler` or `HttpAuthorizationHandler` query will be 
> parsed and depending on the step instructions, the query will be marked as of 
> type read or write and then privilege evaluation will be done by calling 
> `isAccessAllowed` method of `Authorizer`
> {code:java}
> public interface Authorizer {
>     /**
>      * Whether or not the authorization requires check.
>      * If false will not authorzie user.
>      */
>     public boolean requireAuthorization();
>     /**
>      * Setup is called once upon system startup to initialize the {@code 
> Authorizer}.
>      */
>     public void setup(final Map<String, Object> config);
>     /**
>      * A "standard" authorization implementation
>      */
>     public boolean isAccessAllowed(AuthorizationRequest authorizationRequest) 
> throws AuthorizationException;
> }
> {code}
> Access policies can be defined in tools like `Apache Ranger`, sample policy:
> !Screenshot 2020-06-25 at 15.15.04.png|width=1017,height=548!
>  
>  
>  



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