[wildfly-dev] JBoss MSC Plans

[Rostislav Svoboda]

> Hi everyone,
> 
> I would like to outline a brief JBoss MSC Plans for Year 2018.
> 
> Goals defined below address both:
> * Cloud First Effort
> - Reduce WildFly memory footprint
> - Speed up WildFly boot time
> * Potential Migration to MSC 2
> 
> MSC Library Goals:
> * SHORT TERM GOALS (MSC 1.2.x, 1.3.x)
> [1] simplify MSC state machine - deprecate useless MSC internal states
> (e.g. REMOVED, WONT_START, WAITING, REMOVING, STOPPING maybe others)
> [2] deprecate API exposing MSC internals
> (e.g. replace ServiceListener with LifecycleListener)
> [3] deprecate MSC Values, Injections & Injectors and provide alternative API
> (alternative API should have same minimalistic memory requirements like MSC
> 2)
> * LONG TERM GOALS (MSC 1.4.x)
> [4] remove deprecated APIs and all deprecated stuff

Could you map MSC 1.2.x, 1.3.x and 1.4.x to planned WF 12/13/14/15 releases ?

Especially interested in MSC 1.4.x due to removal of deprecated stuff.

Thank you.
Rostislav

> WildFly MSC Integration Goals:
> + SHORT TERM GOALS (WildFly 12)
> * replace ServiceListeners with LifecycleListeners (LifecycleListeners don't
> expose MSC internals)
> * eliminate MSC optional dependencies from WildFLy Core
> * eliminate MSC Values, Injections & Injectors and migrate to alternative API
> * WildFly Management Layer should not expose MSC APIs as its public API
> (complicates potential migration to MSC2 and breaks encapsulation)
> + LONG TERM GOALS (WildFly versions targeting next major EAP)
> * eliminate MSC optional dependencies from WildFly (probably via
> Capabilities)
> (MSC Optional Dependencies have been fixed recently but there's still
> performance issue
> - in worst case scenario if service A has N optional dependencies
> it may happen service A is restarted N times before it is stabilized in UP
> state)
> 
> Feedback and comments more than welcome!
> 
> --
> Rio
> 
> 
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