Runtime info about cluster

[ravi2box]

HI,

I need to collect some statistics about object serialization when one cluster node fails over to another node in the partition.Specifically I would like to observe how long it takes to fail over and replicate objects on another node.Is there some way I can write a small agent app that joins the partition and listens to notifications?

Can i use the jgroups library and connect with a small client app?

TIA
Ravi

[belaban]

Sure, you could even write a small MBean that collects the stats and makes the available via JMX

[ravi2box]

Bela,

Can u give me an idea of where to find code snippets to understand how this can be done..Am i correct in assuming that if ANY agent that joins a channel called "Defaultpartition" automatically is part of the cluster??

Specifically, where can i find code in the jboss CVS tree that handles new nodes being added to the cluster and how notifications are processed at each node?

Thanks
Ravi

[belaban]

Look at ClusterPartition (in cluster/src/main/org/jboss/ha/framework/server) for an example