[jboss-jira] [JBoss JIRA] (JGRP-1937) Configuration: revert order of protocols in configuration

[Bela Ban (JIRA)]

     [ https://issues.jboss.org/browse/JGRP-1937?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Bela Ban closed JGRP-1937.
--------------------------
    Resolution: Won't Do


Big resistance from the wildfly folks

> Configuration: revert order of protocols in configuration
> ---------------------------------------------------------
>
>                 Key: JGRP-1937
>                 URL: https://issues.jboss.org/browse/JGRP-1937
>             Project: JGroups
>          Issue Type: Feature Request
>            Reporter: Bela Ban
>            Assignee: Bela Ban
>             Fix For: 4.0
>
>
> Currently, a JGroups configuration lists the protocols in *bottom to top* order, e.g.
> {noformat}
> <UDP/>
> <PING/>
> ...
> <FRAG2/>
> {noformat}
> This is somewhat misleading as {{UDP}} is not the top protocol in the resulting stack, but the bottom protocol stack:
> {noformat}
> FRAG2
>    |
> PING
>    |
>   ...
>  UDP
> {noformat}
> Therefore, it would be better to define the configuration as follows:
> {noformat}
> <FRAG2/>
> ...
> <PING/>
> <UDP/>
> {noformat}
> To prevent reuse of older configurations in 4.0, we could replace {{<config>}} with {{<jgroups>}}.
> A configuration starting with {{<config>}} would be parsed in the old style (plus a warning would be issued) and a config starting with {{<jgroups>}} would be parsed in the new style.
> If programmatic configuration is used, we could check which protocol is at the head of the list. If it is a transport protocol ({{UDP}} or {{TCP}}), we could dynamically revert the order and issue a warning.



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