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Merge pull request #91295 from ingvagabund/have-kubectl-explain-check-all-gvks

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kubectl explain: detect resource group in case there are two or more groups discovered
This commit is contained in:
Kubernetes Prow Robot 2021-03-07 08:31:42 -08:00 committed by GitHub
commit e19c88fbf6
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2 changed files with 53 additions and 6 deletions
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22
staging/src/k8s.io/kubectl/pkg/cmd/explain/explain.go
View File

@ -120,12 +120,22 @@ func (o *ExplainOptions) Run(args []string) error {
recursive := o.Recursive
apiVersionString := o.APIVersion
// TODO: After we figured out the new syntax to separate group and resource, allow
// the users to use it in explain (kubectl explain <group><syntax><resource>).
// Refer to issue #16039 for why we do this. Refer to PR #15808 that used "/" syntax.
fullySpecifiedGVR, fieldsPath, err := explain.SplitAndParseResourceRequest(args[0], o.Mapper)
if err != nil {
return err
var fullySpecifiedGVR schema.GroupVersionResource
var fieldsPath []string
var err error
if len(apiVersionString) == 0 {
fullySpecifiedGVR, fieldsPath, err = explain.SplitAndParseResourceRequestWithMatchingPrefix(args[0], o.Mapper)
if err != nil {
return err
}
} else {
// TODO: After we figured out the new syntax to separate group and resource, allow
// the users to use it in explain (kubectl explain <group><syntax><resource>).
// Refer to issue #16039 for why we do this. Refer to PR #15808 that used "/" syntax.
fullySpecifiedGVR, fieldsPath, err = explain.SplitAndParseResourceRequest(args[0], o.Mapper)
if err != nil {
return err
}
}
gvk, _ := o.Mapper.KindFor(fullySpecifiedGVR)

37
staging/src/k8s.io/kubectl/pkg/explain/explain.go
View File

@ -50,6 +50,43 @@ func SplitAndParseResourceRequest(inResource string, mapper meta.RESTMapper) (sc
if err != nil {
return schema.GroupVersionResource{}, nil, err
}
return gvr, fieldsPath, nil
}
// SplitAndParseResourceRequestWithMatchingPrefix separates the users input into a model and fields
// while selecting gvr whose (resource, group) prefix matches the resource
func SplitAndParseResourceRequestWithMatchingPrefix(inResource string, mapper meta.RESTMapper) (gvr schema.GroupVersionResource, fieldsPath []string, err error) {
// ignore trailing period
inResource = strings.TrimSuffix(inResource, ".")
dotParts := strings.Split(inResource, ".")
gvrs, err := mapper.ResourcesFor(schema.GroupVersionResource{Resource: dotParts[0]})
if err != nil {
return schema.GroupVersionResource{}, nil, err
}
for _, gvrItem := range gvrs {
// Find first gvr whose gr prefixes requested resource
groupResource := gvrItem.GroupResource().String()
if strings.HasPrefix(inResource, groupResource) {
resourceSuffix := inResource[len(groupResource):]
if len(resourceSuffix) > 0 {
dotParts := strings.Split(resourceSuffix, ".")
if len(dotParts) > 0 {
fieldsPath = dotParts[1:]
}
}
return gvrItem, fieldsPath, nil
}
}
// If no match, take the first (the highest priority) gvr
if len(gvrs) > 0 {
gvr = gvrs[0]
_, fieldsPath = splitDotNotation(inResource)
}
return gvr, fieldsPath, nil
}