// 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
}
func parseTaints(spec []string) ([]v1.Taint, []v1.Taint, error) {
var taints, taintsToRemove []v1.Taint
uniqueTaints := map[v1.TaintEffect]sets.String{}
for _, taintSpec := range spec {
if strings.Index(taintSpec, "=") != -1 && strings.Index(taintSpec, ":") != -1 {
newTaint, err := utiltaints.ParseTaint(taintSpec)
if err != nil {
return nil, nil, err
}
// validate if taint is unique by <key, effect>
if len(uniqueTaints[newTaint.Effect]) > 0 && uniqueTaints[newTaint.Effect].Has(newTaint.Key) {
return nil, nil, fmt.Errorf("duplicated taints with the same key and effect: %v", newTaint)
}
// add taint to existingTaints for uniqueness check
if len(uniqueTaints[newTaint.Effect]) == 0 {
uniqueTaints[newTaint.Effect] = sets.String{}
}
uniqueTaints[newTaint.Effect].Insert(newTaint.Key)
taints = append(taints, newTaint)
} else if strings.HasSuffix(taintSpec, "-") {
taintKey := taintSpec[:len(taintSpec)-1]
var effect v1.TaintEffect
if strings.Index(taintKey, ":") != -1 {
parts := strings.Split(taintKey, ":")
taintKey = parts[0]
effect = v1.TaintEffect(parts[1])
}
taintsToRemove = append(taintsToRemove, v1.Taint{Key: taintKey, Effect: effect})
} else {
return nil, nil, fmt.Errorf("unknown taint spec: %v", taintSpec)
}
}
return taints, taintsToRemove, nil
}