[jira] [Created] (HBASE-12579) Move obtainAuthTokenForJob() methods out of User

["Gary Helmling (JIRA)" <ji...@apache.org>]

Gary Helmling created HBASE-12579:
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             Summary: Move obtainAuthTokenForJob() methods out of User
                 Key: HBASE-12579
                 URL: https://issues.apache.org/jira/browse/HBASE-12579
             Project: HBase
          Issue Type: Improvement
          Components: security
            Reporter: Gary Helmling


The {{User}} class currently contains some utility methods to obtain HBase authentication tokens for the given user.  However, these methods initiate an RPC to the {{TokenProvider}} coprocessor endpoint, an action which should not be part of the User class' responsibilities.

This leads to a couple of problems:
# The way the methods are currently structured, it is impossible to integrate them with normal connection management for the cluster (the TokenUtil class constructs its own HTable instance internally).
# The User class is logically part of the hbase-common module, but uses the TokenUtil class (part of hbase-server, though it should probably be moved to hbase-client) through reflection, leading to a hidden dependency.

The {{obtainAuthTokenForJob()}} methods should be deprecated and the process of obtaining authentication tokens should be moved to use the normal connection lifecycle.



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