[infinispan-issues] [JBoss JIRA] (ISPN-8981) Generate Hot Rod parser automatically

[Diego Lovison (Jira)]

     [ https://issues.jboss.org/browse/ISPN-8981?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Diego Lovison closed ISPN-8981.
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> Generate Hot Rod parser automatically
> -------------------------------------
>
>                 Key: ISPN-8981
>                 URL: https://issues.jboss.org/browse/ISPN-8981
>             Project: Infinispan
>          Issue Type: Enhancement
>          Components: Server
>    Affects Versions: 9.2.0.Final
>            Reporter: Radim Vansa
>            Assignee: Radim Vansa
>            Priority: Major
>             Fix For: 9.4.0.Alpha1, 9.4.0.CR3
>
>
> This JIRA has two objectives:
> 1. reduce number of allocated objects
> 2. improve the parsing on server side to avoid chains of lambda mappings
> Manual parsing of Hot Rod protocol, invoking recursive methods that return {{Optional}}s or {{Optional<Optional<...>}}s seems to generate a lot of garbage. A better approach would be a finite state automaton that would read the byte stream and invoke callbacks.
> Such automaton can be generated from a high-level grammar as part of the build process.
> Along with these changes we can remove the {{Response}} abstraction and write responses directly as {{ByteBuf}}s.



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