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Allow exec and function transformers to generate resources

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This commit is contained in:
Katrina Verey
2021-02-04 10:24:01 -08:00
parent f927cf0b8e
commit 97a2b15be6
3 changed files with 65 additions and 11 deletions
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45
api/internal/plugins/utils/utils.go
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@@ -15,6 +15,7 @@ import (
"sigs.k8s.io/kustomize/api/konfig"
"sigs.k8s.io/kustomize/api/resid"
"sigs.k8s.io/kustomize/api/resmap"
"sigs.k8s.io/kustomize/api/resource"
"sigs.k8s.io/kustomize/api/types"
"sigs.k8s.io/yaml"
)
@@ -147,34 +148,46 @@ func GetResMapWithIDAnnotation(rm resmap.ResMap) (resmap.ResMap, error) {
// UpdateResMapValues updates the Resource value in the given ResMap
// with the emitted Resource values in output.
func UpdateResMapValues(pluginName string, h *resmap.PluginHelpers, output []byte, rm resmap.ResMap) error {
outputRM, err := h.ResmapFactory().NewResMapFromBytes(output)
resFactory := h.ResmapFactory().RF()
resources, err := resFactory.SliceFromBytes(output)
if err != nil {
return err
}
for _, r := range outputRM.Resources() {
for _, r := range resources {
// for each emitted Resource, find the matching Resource in the original ResMap
// using its id
annotations := r.GetAnnotations()
idString, ok := annotations[idAnnotation]
// Transformer-generated resource--add to resMap
if !ok {
return fmt.Errorf("the transformer %s should not remove annotation %s",
pluginName, idAnnotation)
if err := rm.Append(r); err != nil {
return err
}
continue
}
id := resid.ResId{}
err := yaml.Unmarshal([]byte(idString), &id)
err = yaml.Unmarshal([]byte(idString), &id)
if err != nil {
return err
}
// Outdated ID is likely a duplicated resource--add to resMap
if !id.Equals(r.CurId()) {
removeIDAnnotation(r)
if err := rm.Append(r); err != nil {
return err
}
continue
}
// Existing resource--update in resMap
res, err := rm.GetByCurrentId(id)
if err != nil {
return fmt.Errorf("unable to find unique match to %s", id.String())
}
// remove the annotation set by Kustomize to track the resource
delete(annotations, idAnnotation)
if len(annotations) == 0 {
annotations = nil
}
r.SetAnnotations(annotations)
removeIDAnnotation(r)
// update the resource value with the transformed object
res.ResetPrimaryData(r)
@@ -182,6 +195,16 @@ func UpdateResMapValues(pluginName string, h *resmap.PluginHelpers, output []byt
return nil
}
func removeIDAnnotation(r *resource.Resource) {
// remove the annotation set by Kustomize to track the resource
annotations := r.GetAnnotations()
delete(annotations, idAnnotation)
if len(annotations) == 0 {
annotations = nil
}
r.SetAnnotations(annotations)
}
// UpdateResourceOptions updates the generator options for each resource in the
// given ResMap based on plugin provided annotations.
func UpdateResourceOptions(rm resmap.ResMap) (resmap.ResMap, error) {