Re: [wildfly-dev] Management Model: Squatter Resources

I’m integrating HornetQ 2.5 in WildFly and I have a new use case for resources that is related to singleton/squatter resources. In HornetQ 2.5 they have completely rewritten the HA configuration. Basically, a server can be configured as live-only, replicated (master, slave, or colocated) or using shared-store (again as a master, slave or colocated). To represent this in the management model, I have added several resources under hornetq-server: /subsystem=messaging/ hornetq-server=*/ ha-policy=live-only ha-policy=replicated-master ha-policy=replicated-slave ha-policy=replicated-colocated ha-policy=shared-store-master ha-policy=shared-store-slave ha-policy=shared-store-colocated I have constraints for this ha-policy resource: * There can at most one child for this type of resource (no child means no HA). This is enforces during the MODEL stage. * The child can only be named using one of the 7 values above (i.e. there is no resource definition for ha-policy=*, using any other name would fail) Each ha-policy definition has a different set of attributes. Using an attribute group to represent the HA policy does not seem a good fit as some of them have subresources too. I wonder if that representation fits with our roadmap and whether it can be considered as a singleton (as there can only be one resource of that type among). I have the additional constraints of having only one chile for that type that is not covered by your proposal though. I especially wonder how the console (and to a lesser extent the cli) can deal with this resource. Heiko, is it something that would make sense for the console based on this resource description: [standalone@localhost:9990 hornetq-server=default] ./ha-policy=*:read-resource-description(recursive-depth=1) { "outcome" => "success", "result" => [ { "address" => [ ("subsystem" => "messaging"), ("hornetq-server" => "default"), ("ha-policy" => "replication-colocated") ], "outcome" => "success", "result" => { ... } }, { "address" => [ ("subsystem" => "messaging"), ("hornetq-server" => "default"), ("ha-policy" => "replication-master") ], "outcome" => "success", "result" => { ... } }, { "address" => [ ("subsystem" => "messaging"), ("hornetq-server" => "default"), ("ha-policy" => "shared-store-slave") ], "outcome" => "success", "result" => { ... } }, { "address" => [ ("subsystem" => "messaging"), ("hornetq-server" => "default"), ("ha-policy" => "live-only") ], "outcome" => "success", "result" => { ... } }, { "address" => [ ("subsystem" => "messaging"), ("hornetq-server" => "default"), ("ha-policy" => "shared-store-master") ], "outcome" => "success", "result" => { ... } }, { "address" => [ ("subsystem" => "messaging"), ("hornetq-server" => "default"), ("ha-policy" => "replication-slave") ], "outcome" => "success", "result" => { ... } }, { "address" => [ ("subsystem" => "messaging"), ("hornetq-server" => "default"), ("ha-policy" => "shared-store-colocated") ], "outcome" => "success", "result" => { ... } } ] } jeff