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https://issues.apache.org/jira/browse/KNOX-2392?focusedWorklogId=448017&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-448017
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ASF GitHub Bot logged work on KNOX-2392:
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                Author: ASF GitHub Bot
            Created on: 18/Jun/20 20:15
            Start Date: 18/Jun/20 20:15
    Worklog Time Spent: 10m 
      Work Description: pzampino opened a new pull request #350:
URL: https://github.com/apache/knox/pull/350


   ## What changes were proposed in this pull request?
   
   I've created a TokenStateService implementation that avoids the unnecessary 
overhead associated with the AliasBasedTokenStateService (size of keystore and 
associated performance of access).
   
   Since KNOX-2377 added the TokenStateJournal for addressing the potential 
loss of token state due to changes necessary to improve the performance of the 
AliasBasedTokenStateService, this new implementation leverages that journaling 
facility alone to manage token state. It is effectively, the 
AliasBasedTokenStateService without the keystore interactions.
   
   I've not yet made this implementation the default, but I have tested it 
locally, and I foresee this becoming the default for the near future since the 
use of the keystore presents an unnecessary burden now that secrets are no 
longer persisted with token state.
   
   ## How was this patch tested?
   
   - _mvn -T1.5C -Ppackage,release clean install_
   - Added unit tests (JournalBasedTokenStateServiceTest), and augmented 
existing tests.
   - Changed (only locally) DefaultGatewayServices to use the new 
implementation, and tested manually, including concurrent load testing. Even 
with multiple concurrent clients making frequent token requests, the size of 
the persisted content grows at a small fraction of the rate that the keystore 
does under similar load.


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Issue Time Tracking
-------------------

            Worklog Id:     (was: 448017)
    Remaining Estimate: 0h
            Time Spent: 10m

> Simple file-based TokenStateService implementation  
> ----------------------------------------------------
>
>                 Key: KNOX-2392
>                 URL: https://issues.apache.org/jira/browse/KNOX-2392
>             Project: Apache Knox
>          Issue Type: New Feature
>          Components: Server
>    Affects Versions: 1.5.0
>            Reporter: Philip Zampino
>            Assignee: Philip Zampino
>            Priority: Major
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> Since server-managed token state no longer persists any secrets, the use of a 
> keystore for persistence of token state is an unnecessary burden.
> There should be a simple file-based TokenStateService implementation to 
> remove this burden. With the recently-added token state journal facility 
> (KNOX-2377), it should be more easily possible to create such an 
> implementation.
> This implementation should also cache state in memory for improved 
> performance.



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