mirror of https://github.com/kubernetes/kops.git
127 lines
2.9 KiB
Go
127 lines
2.9 KiB
Go
/*
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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 kubemanifest
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import (
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"fmt"
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"strings"
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"k8s.io/klog/v2"
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)
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type visitorBase struct{}
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func (m *visitorBase) VisitString(path []string, v string, mutator func(string)) error {
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klog.V(10).Infof("string value at %s: %s", strings.Join(path, "."), v)
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return nil
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}
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func (m *visitorBase) VisitBool(path []string, v bool, mutator func(bool)) error {
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klog.V(10).Infof("string value at %s: %v", strings.Join(path, "."), v)
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return nil
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}
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func (m *visitorBase) VisitFloat64(path []string, v float64, mutator func(float64)) error {
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klog.V(10).Infof("float64 value at %s: %f", strings.Join(path, "."), v)
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return nil
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}
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func (m *visitorBase) VisitMap(path []string, v map[string]interface{}) error {
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klog.V(10).Infof("object value at %s: %v", strings.Join(path, "."), v)
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return nil
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}
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type Visitor interface {
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VisitBool(path []string, v bool, mutator func(bool)) error
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VisitString(path []string, v string, mutator func(string)) error
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VisitFloat64(path []string, v float64, mutator func(float64)) error
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VisitMap(path []string, v map[string]interface{}) error
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}
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func visit(visitor Visitor, data interface{}, path []string, mutator func(interface{})) error {
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if data == nil {
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return nil
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}
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switch data := data.(type) {
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case string:
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err := visitor.VisitString(path, data, func(v string) {
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mutator(v)
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})
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if err != nil {
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return err
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}
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case bool:
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err := visitor.VisitBool(path, data, func(v bool) {
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mutator(v)
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})
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if err != nil {
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return err
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}
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case float64:
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err := visitor.VisitFloat64(path, data, func(v float64) {
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mutator(v)
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})
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if err != nil {
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return err
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}
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case nil:
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case map[string]interface{}:
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m := data
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if err := visitor.VisitMap(path, m); err != nil {
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return err
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}
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for k, v := range m {
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path = append(path, k)
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err := visit(visitor, v, path, func(v interface{}) {
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m[k] = v
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})
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if err != nil {
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return err
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}
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path = path[:len(path)-1]
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}
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case []interface{}:
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s := data
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for i, v := range s {
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path = append(path, fmt.Sprintf("[%d]", i))
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err := visit(visitor, v, path, func(v interface{}) {
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s[i] = v
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})
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if err != nil {
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return err
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}
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path = path[:len(path)-1]
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}
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case []string:
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// ignore - we don't have any visitors for this currently
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default:
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return fmt.Errorf("unhandled type in manifest: %T", data)
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}
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return nil
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}
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