[jira] [Created] (SOLR-7275) Pluggable authorization module in Solr

["Anshum Gupta (JIRA)" <ji...@apache.org>]

Anshum Gupta created SOLR-7275:
----------------------------------

             Summary: Pluggable authorization module in Solr
                 Key: SOLR-7275
                 URL: https://issues.apache.org/jira/browse/SOLR-7275
             Project: Solr
          Issue Type: Sub-task
            Reporter: Anshum Gupta
            Assignee: Anshum Gupta


Solr needs an interface that makes it easy for different authorization systems to be plugged into it. Here's what I plan on doing:

Define an interface {{SolrAuthorizationPlugin}} with one single method {{isAuthorized}}. This would take in a {{SolrRequestContext}} object and return an {{SolrAuthorizationResponse}} object. The object as of now would only contain a single boolean value but in the future could contain more information e.g. ACL for document filtering etc.

The reason why we need a context object is so that the plugin doesn't need to understand Solr's capabilities e.g. how to extract the name of the collection or other information from the incoming request as there are multiple ways to specify the target collection for a request. Similarly request type can be specified by {{qt}} or {{/handler_name}}.

Flow:
Request -> SolrDispatchFilter -> isAuthorized(context) -> Process/Return.

{code}
public interface SolrAuthorizationPlugin {
  public AuthResponse isAuthorized();
}
{code}

{code}
public  class SolrRequestContext {
  UserInfo; // Will contain user context from the authentication layer.
  HTTPRequest request;
  Enum OperationType; // Correlated with user roles.
  String[] CollectionsAccessed;
  String[] FieldsAccessed;
  String Resource;
}

{code}

{code}
public class SolrAuthorizationResponse {
  boolean authorized;

  public boolean isAuthorized();
}
{code}

User Roles: 
* Admin
* Collection Level:
  * Query
  * Update
  * Admin

Using this framework, an implementation could be written for specific security systems e.g. Apache Ranger or Sentry. It would keep all the security system specific code out of Solr.



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