// updateNodeUpdateResponse assumes the n.srv.peerLock is held for reading.
func (n *Node) constructNodeServerInfoResponse(snap *state.StateSnapshot, reply *structs.NodeUpdateResponse) error {
reply.LeaderRPCAddr = n.srv.raft.Leader()
// Reply with config information required for future RPC requests
reply.Servers = make([]*structs.NodeServerInfo, 0, len(n.srv.localPeers))
for k, v := range n.srv.localPeers {
reply.Servers = append(reply.Servers,
&structs.NodeServerInfo{
RPCAdvertiseAddr: k,
RPCMajorVersion: int32(v.MajorVersion),
RPCMinorVersion: int32(v.MinorVersion),
Datacenter: v.Datacenter,
})
}
// TODO(sean@): Use an indexed node count instead
//
// Snapshot is used only to iterate over all nodes to create a node
// count to send back to Nomad Clients in their heartbeat so Clients
// can estimate the size of the cluster.
iter, err := snap.Nodes()
if err == nil {
for {
raw := iter.Next()
if raw == nil {
break
}
reply.NumNodes++
}
}
return nil
}