func parseLabels(spec []string) (map[string]string, []string, error) {
labels := map[string]string{}
var remove []string
for _, labelSpec := range spec {
if strings.Index(labelSpec, "=") != -1 {
parts := strings.Split(labelSpec, "=")
if len(parts) != 2 {
return nil, nil, fmt.Errorf("invalid label spec: %v", labelSpec)
}
if errs := validation.IsValidLabelValue(parts[1]); len(errs) != 0 {
return nil, nil, fmt.Errorf("invalid label value: %q: %s", labelSpec, strings.Join(errs, ";"))
}
labels[parts[0]] = parts[1]
} else if strings.HasSuffix(labelSpec, "-") {
remove = append(remove, labelSpec[:len(labelSpec)-1])
} else {
return nil, nil, fmt.Errorf("unknown label spec: %v", labelSpec)
}
}
for _, removeLabel := range remove {
if _, found := labels[removeLabel]; found {
return nil, nil, fmt.Errorf("can not both modify and remove a label in the same command")
}
}
return labels, remove, nil
}
// ParseTaint parses a taint from a string. Taint must be off the format '<key>=<value>:<effect>'.
func ParseTaint(st string) (v1.Taint, error) {
var taint v1.Taint
parts := strings.Split(st, "=")
if len(parts) != 2 || len(parts[1]) == 0 || len(validation.IsQualifiedName(parts[0])) > 0 {
return taint, fmt.Errorf("invalid taint spec: %v", st)
}
parts2 := strings.Split(parts[1], ":")
effect := v1.TaintEffect(parts2[1])
errs := validation.IsValidLabelValue(parts2[0])
if len(parts2) != 2 || len(errs) != 0 {
return taint, fmt.Errorf("invalid taint spec: %v, %s", st, strings.Join(errs, "; "))
}
if effect != v1.TaintEffectNoSchedule && effect != v1.TaintEffectPreferNoSchedule {
return taint, fmt.Errorf("invalid taint spec: %v, unsupported taint effect", st)
}
taint.Key = parts[0]
taint.Value = parts2[0]
taint.Effect = effect
return taint, nil
}
// ValidateLabels validates that a set of labels are correctly defined.
func ValidateLabels(labels map[string]string, fldPath *field.Path) field.ErrorList {
allErrs := field.ErrorList{}
for k, v := range labels {
allErrs = append(allErrs, ValidateLabelName(k, fldPath)...)
for _, msg := range validation.IsValidLabelValue(v) {
allErrs = append(allErrs, field.Invalid(fldPath, v, msg))
}
}
return allErrs
}
func validateLabelValue(v string) error {
if errs := validation.IsValidLabelValue(v); len(errs) != 0 {
return fmt.Errorf("invalid label value: %q: %s", v, strings.Join(errs, "; "))
}
return nil
}