func parseNodeSelectorWithPrompt(
oldSelector klabels.Selector,
newSelectorString string,
applicator labels.Applicator,
) (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.Applicator) 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 waitForPodLabel(applicator labels.Applicator, hasDSIDLabel bool, podPath string) (labels.Labeled, error) {
var labeled labels.Labeled
var err error
condition := func() error {
var val bool
labeled, err = applicator.GetLabels(labels.POD, podPath)
if err == nil {
val = labeled.Labels.Has(DSIDLabel)
if hasDSIDLabel == val {
return nil
}
}
return util.Errorf("Expected hasIDLabel to be '%v', got '%v'", hasDSIDLabel, val)
}
err = waitForCondition(condition)
return labeled, err
}
func createRC(
rcs rcstore.Store,
applicator labels.Applicator,
manifest manifest.Manifest,
desired int,
nodes map[types.NodeName]bool,
) (rc_fields.RC, error) {
created, err := rcs.Create(manifest, nil, nil)
if err != nil {
return rc_fields.RC{}, fmt.Errorf("Error creating RC: %s", err)
}
podID := string(manifest.ID())
for node := range nodes {
if err = applicator.SetLabel(labels.POD, node.String()+"/"+podID, rc.RCIDLabel, string(created.ID)); err != nil {
return rc_fields.RC{}, fmt.Errorf("Error applying RC ID label: %s", err)
}
}
return created, rcs.SetDesiredReplicas(created.ID, desired)
}
func applyLabels(applicator labels.Applicator, 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
}
func scheduledPods(t *testing.T, pods labels.Applicator) []labels.Labeled {
podSelector := klabels.Everything().Add("podTest", klabels.EqualsOperator, []string{"successful"})
labeled, err := pods.GetMatches(podSelector, labels.POD)
Assert(t).IsNil(err, "expected no error matching pods")
return labeled
}