// initOnlineNodesGauge counts all nodes with status Online and initializes the
// OnlineNode Gauge with it. It also register a callback with the database to be notified
// of nodes going offline.
func initOnlineNodesGauge(store data.Nodeinfostore) {
OnlineNodes.Set(0.0)
for _, status := range store.GetNodeStatusInfos() {
if status.Online {
OnlineNodes.Inc()
}
}
store.NotifyNodeOffline(decrementOnlineNodes)
}
// ProcessStoredValues needs to be called at startup as soon as the data store is
// ready. This methods takes care if initializing all Metrics with values based on
// the last saved values.
func ProcessStoredValues(store data.Nodeinfostore) {
TotalNodes.Set(float64(len(store.GetNodeStatusInfos())))
initTotalClientsGauge(store)
initTrafficCounter(store)
initOnlineNodesGauge(store)
}
