func parseNodeSelectorWithPrompt(
oldSelector klabels.Selector,
newSelectorString string,
applicator labels.ApplicatorWithoutWatches,
) (klabels.Selector, error) {
newSelector, err := parseNodeSelector(newSelectorString)
if err != nil {
return newSelector, err
}
if oldSelector.String() == newSelector.String() {
return newSelector, nil
}
newNodeLabels, err := applicator.GetMatches(newSelector, labels.NODE, false)
if err != nil {
return newSelector, util.Errorf("Error getting matching labels: %v", err)
}
oldNodeLabels, err := applicator.GetMatches(oldSelector, labels.NODE, false)
if err != nil {
return newSelector, util.Errorf("Error getting matching labels: %v", err)
}
toRemove, toAdd := makeNodeChanges(oldNodeLabels, newNodeLabels)
fmt.Printf("Changing deployment from '%v' to '%v':\n", oldSelector.String(), newSelectorString)
fmt.Printf("Removing:%9s hosts %s\n", fmt.Sprintf("-%v", len(toRemove)), toRemove)
fmt.Printf("Adding: %9s hosts %s\n", fmt.Sprintf("+%v", len(toAdd)), toAdd)
fmt.Println("Continue?")
if !confirm() {
return newSelector, util.Errorf("User cancelled")
}
return newSelector, nil
}
func confirmMinheathForSelector(minHealth int, selector klabels.Selector, applicator labels.ApplicatorWithoutWatches) error {
matches, err := applicator.GetMatches(selector, labels.NODE, false)
if err != nil {
return err
}
if len(matches) < minHealth {
fmt.Printf("Your selector matches %d nodes but your minhealth is set to only %d, this daemon set will not replicate. Continue?\n", len(matches), minHealth)
if !confirm() {
return util.Errorf("User cancelled")
}
}
return nil
}
func applyLabels(applicator labels.ApplicatorWithoutWatches, entityID string, labelType labels.Type, additiveLabels map[string]string, destructiveKeys []string) error {
var err error
if !confirm(fmt.Sprintf("mutate the labels for %s/%s", labelType, entityID)) {
return nil
}
if len(additiveLabels) > 0 {
for k, v := range additiveLabels {
err = applicator.SetLabel(labelType, entityID, k, v)
if err != nil {
fmt.Fprintf(os.Stderr, "Error while appyling label. k/v: %s/%s.\n%v\n", k, v, err)
}
}
}
if len(destructiveKeys) > 0 {
for _, key := range destructiveKeys {
err = applicator.RemoveLabel(labelType, entityID, key)
if err != nil {
fmt.Fprintf(os.Stderr, "Error while destroying label with key: %s.\n%v\n", key, err)
}
}
}
return nil
}