[jira] [Created] (JAMES-2272) Add a TaskManager

["Tellier Benoit (JIRA)" <se...@james.apache.org>]

Tellier Benoit created JAMES-2272:
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             Summary: Add a TaskManager
                 Key: JAMES-2272
                 URL: https://issues.apache.org/jira/browse/JAMES-2272
             Project: James Server
          Issue Type: Improvement
          Components: task
    Affects Versions: master
            Reporter: Tellier Benoit


As mentioned by [~matthieu-at-arkoon] in https://github.com/linagora/james-project/pull/1199 ( JAMES-2266) we have long running tasks that deserves a better support.

We want an entity running tasks, and allowing to monitor / cancel them.

Hence, I got a try, and proposes a Task Manager implementation. I use it in the context of Cassandra migration.

 1. Cassandra migration schedule a task and return the corresponding ID
 2. Webadmin task API can then be called to get execution details / await task end / cancel task

Note that the context of task is more generic, and might apply to:
 - JAMES-2266 solving ghost mailbox bug
 - mailbox re-indexing
 - Quota re-calculation
 - Mail repository re-processing
 - etc...

Its use should later on be extended to CLI.



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