[jboss-jira] [JBoss JIRA] (AS7-3023) Move topology information to JGroups subsystem

[Tristan Tarrant (Commented) (JIRA)]

    [ https://issues.jboss.org/browse/AS7-3023?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12655192#comment-12655192 ] 

Tristan Tarrant commented on AS7-3023:
--------------------------------------

Quoting Brian

This is one of the use cases for expressions in the configuration model. 
So in the JGroups/Infinispan subsystem the relevant attributes would 
need to support expressions and the domain.xml configuration would use 
expressions:

<host-topology site="${host-topology.site}" rack="${host-topology.rack}" 
machine="${host-topology.machine}"/>

The host.xml server element can be used to specify the values:

<server name="server-one" ...>
  <system-properties>
    <property name="host-topology.site" value="s1"/>
   ...
  </system-properties>
</server>
                
> Move topology information to JGroups subsystem
> ----------------------------------------------
>
>                 Key: AS7-3023
>                 URL: https://issues.jboss.org/browse/AS7-3023
>             Project: Application Server 7
>          Issue Type: Bug
>          Components: Clustering
>    Affects Versions: 7.1.0.Beta1b
>            Reporter: Tristan Tarrant
>            Assignee: Tristan Tarrant
>             Fix For: 7.1.0.Final
>
>
> In order to support topology aware clusters, the addresses generated by MuxChannel must be of type TopologyUUID, otherwise Infinispan cannot compare address topology (this currently generates a ClassCastException). Also topology must be set before the channel is started. For this reason the topology tuple (site,rack,machine) should be set at the jgroups subsystem transport configuration and the Infinispan subsystem should merely retrieve it from there.

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