package ncutils import ( "fmt" "time" "github.com/gravitl/netmaker/logger" ) // BackOff - back off any function while there is an error func BackOff(isExponential bool, maxTime int, f interface{}) (interface{}, error) { // maxTime seconds startTime := time.Now() sleepTime := time.Second for time.Now().Before(startTime.Add(time.Second * time.Duration(maxTime))) { if result, err := f.(func() (interface{}, error))(); err == nil { return result, nil } time.Sleep(sleepTime) if isExponential { sleepTime = sleepTime << 1 } logger.Log(1, "retrying...") } return nil, fmt.Errorf("could not find result") }