// checkVersion makes a best-effort attempt to verify that fleetctl is at least as new as the
// latest fleet version found registered in the cluster. If any errors are encountered or fleetctl
// is >= the latest version found, it returns true. If it is < the latest found version, it returns
// false and a scary warning to the user.
func checkVersion(reg registry.Registry) (string, bool) {
fv := version.SemVersion
lv, err := reg.LatestVersion()
if err != nil {
log.Errorf("error attempting to check latest fleet version in Registry: %v", err)
} else if lv != nil && fv.LessThan(*lv) {
return fmt.Sprintf(oldVersionWarning, fv.String(), lv.String()), false
}
return "", true
}
