// start initializes the infostore with the rpc server address and
// then begins processing connecting clients in an infinite select
// loop via goroutine. Periodically, clients connected and awaiting
// the next round of gossip are awoken via the conditional variable.
func (s *server) start(rpcServer *rpc.Server, addr net.Addr) {
s.is.NodeAddr = util.MakeUnresolvedAddr(addr.Network(), addr.String())
if err := rpcServer.Register("Gossip.Gossip", s.Gossip, &Request{}); err != nil {
log.Fatalf("unable to register gossip service with RPC server: %s", err)
}
rpcServer.AddOpenCallback(s.onOpen)
rpcServer.AddCloseCallback(s.onClose)
updateCallback := func(_ string, _ roachpb.Value) {
// Wakeup all pending clients.
s.ready.Broadcast()
}
unregister := s.is.registerCallback(".*", updateCallback)
s.stopper.RunWorker(func() {
<-s.stopper.ShouldStop()
s.mu.Lock()
defer s.mu.Unlock()
unregister()
s.ready.Broadcast() // wake up clients
})
}