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

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 Fix For: 9.4.0.Final 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.