[jboss-jira] [JBoss JIRA] (JGRP-2224) Multiple discovery protocols

[Bela Ban (JIRA)]

    [ https://issues.jboss.org/browse/JGRP-2224?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13481164#comment-13481164 ] 

Bela Ban commented on JGRP-2224:
--------------------------------

I don't like the idea of having to point to a different file, that's just another moving part that can be missing.

I ended up picking the solution where {{MULTI_PING}} needs to be somewhere above all other discovery protocols, e.g.
{code:xml}
   <TCP ... />
   <TCPPING initial_hosts="127.0.0.1[7800]" port_range="0"/>
   <PING />  
   <MPING/>
   <FILE_PING/>
   <MULTI_PING async_discovery="true"/> 
   <MERGE3/>
   ...
{code}

The reason I did _not_ pick the embeded configuration above is that it would have required an awkward match between protocol IDs and header IDs, and forwarding of messages up the stack.

> Multiple discovery protocols
> ----------------------------
>
>                 Key: JGRP-2224
>                 URL: https://issues.jboss.org/browse/JGRP-2224
>             Project: JGroups
>          Issue Type: Feature Request
>            Reporter: Bela Ban
>            Assignee: Bela Ban
>             Fix For: 4.0.8
>
>
> Allow for multiple discovery protocols. This would allow us to use a single configuration which includes discovery protocols for multiple cloud providers.
> The discovery protocols could be queried sequentially (return on result), or in parallel.
> Investigate whether we need a super discovery protocol which instantiates the individual protocols, or whether each protocol should be changed e.g. to forward events down the stack.



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