[jira] [Created] (JAMES-3736) Kill IMAP processing chain

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

Benoit Tellier created JAMES-3736:
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             Summary: Kill IMAP processing chain
                 Key: JAMES-3736
                 URL: https://issues.apache.org/jira/browse/JAMES-3736
             Project: James Server
          Issue Type: Improvement
          Components: IMAPServer
    Affects Versions: 3.7.0
            Reporter: Benoit Tellier
             Fix For: 3.8.0


Today we create a processor chain to manage IMAP request: each processor passes the request to the next until the request is managed.

This leads to absurdly, needlessly long call stacks as we easily have 40+ processors.

 - This have a performance impact as feeling thread stacks do not come for free
 - Exceptions are hard to read (longer stacktraces)
 - Reading flame graphs is also harder!

We should in my opinion just use a map to directly get the processor for a given request, simply using the request class as a key.



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