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