mirror of https://github.com/k3s-io/k3s
74 lines
2.2 KiB
Go
74 lines
2.2 KiB
Go
/*
|
|
Copyright 2017 The Kubernetes Authors.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
package explain
|
|
|
|
import (
|
|
"io"
|
|
"strings"
|
|
|
|
"k8s.io/kube-openapi/pkg/util/proto"
|
|
|
|
"k8s.io/apimachinery/pkg/api/meta"
|
|
"k8s.io/apimachinery/pkg/runtime/schema"
|
|
)
|
|
|
|
type fieldsPrinter interface {
|
|
PrintFields(proto.Schema) error
|
|
}
|
|
|
|
func splitDotNotation(model string) (string, []string) {
|
|
var fieldsPath []string
|
|
|
|
// ignore trailing period
|
|
model = strings.TrimSuffix(model, ".")
|
|
|
|
dotModel := strings.Split(model, ".")
|
|
if len(dotModel) >= 1 {
|
|
fieldsPath = dotModel[1:]
|
|
}
|
|
return dotModel[0], fieldsPath
|
|
}
|
|
|
|
// SplitAndParseResourceRequest separates the users input into a model and fields
|
|
func SplitAndParseResourceRequest(inResource string, mapper meta.RESTMapper) (schema.GroupVersionResource, []string, error) {
|
|
inResource, fieldsPath := splitDotNotation(inResource)
|
|
gvr, err := mapper.ResourceFor(schema.GroupVersionResource{Resource: inResource})
|
|
if err != nil {
|
|
return schema.GroupVersionResource{}, nil, err
|
|
}
|
|
return gvr, fieldsPath, nil
|
|
}
|
|
|
|
// PrintModelDescription prints the description of a specific model or dot path.
|
|
// If recursive, all components nested within the fields of the schema will be
|
|
// printed.
|
|
func PrintModelDescription(fieldsPath []string, w io.Writer, schema proto.Schema, gvk schema.GroupVersionKind, recursive bool) error {
|
|
fieldName := ""
|
|
if len(fieldsPath) != 0 {
|
|
fieldName = fieldsPath[len(fieldsPath)-1]
|
|
}
|
|
|
|
// Go down the fieldsPath to find what we're trying to explain
|
|
schema, err := LookupSchemaForField(schema, fieldsPath)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
b := fieldsPrinterBuilder{Recursive: recursive}
|
|
f := &Formatter{Writer: w, Wrap: 80}
|
|
return PrintModel(fieldName, f, b, schema, gvk)
|
|
}
|