func parseFlags() error {
flag.Parse()
validArgs := true
errorMsg := ""
if style == "" {
validArgs = false
errorMsg = "Missing `style` argument."
} else if style != "stress" && style != "real" {
validArgs = false
errorMsg = "Invalid `style` argument passed to program: " + style + ". The only acceptable values are \"stress\" and \"real\"."
} else if opsFilename == "" {
validArgs = false
errorMsg = "Missing required `ops_filename` argument."
} else if workers <= 0 {
validArgs = false
errorMsg = "The `workers` argument must be a positive number."
}
if !validArgs {
fmt.Println(errorMsg)
fmt.Println("\nUsage:")
flag.PrintDefaults()
os.Exit(1)
}
var err error
if logger, err = flashback.NewLogger(stdout, stderr); err != nil {
return err
}
return nil
}
func parseFlags() error {
flag.Parse()
if style != "stress" && style != "real" {
return errors.New("Missing or invalid `style` argument passed to program: " + style)
}
if opsFilename == "" {
return errors.New("Missing required `ops_filename` argument")
}
if workers <= 0 {
return errors.New("The `workers` argument must be a positive number")
}
if maxOps == 0 {
maxOps = math.MaxUint32
}
var err error
if logger, err = flashback.NewLogger(stdout, stderr); err != nil {
return err
}
return nil
}