mirror of https://github.com/kubernetes/kops.git
79 lines
2.2 KiB
Go
79 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 edit
|
|
|
|
import (
|
|
"bytes"
|
|
|
|
"k8s.io/apimachinery/pkg/runtime"
|
|
"sigs.k8s.io/yaml"
|
|
|
|
"k8s.io/kops/pkg/apis/kops"
|
|
"k8s.io/kops/pkg/diff"
|
|
"k8s.io/kops/pkg/kopscodecs"
|
|
"k8s.io/kops/upup/pkg/fi/utils"
|
|
)
|
|
|
|
// HasExtraFields checks if the yaml has fields that were not mapped to the object
|
|
// (for example due to a typo in the field name)
|
|
// If there are extra fields it returns a string with a description of the diffs
|
|
// If there are no extra fields it returns an empty string
|
|
func HasExtraFields(yamlString string, object runtime.Object) (string, error) {
|
|
switch object.(type) {
|
|
case *kops.Cluster:
|
|
editedObj := kops.Cluster{}
|
|
err := yaml.UnmarshalStrict([]byte(yamlString), &editedObj)
|
|
if err == nil {
|
|
return "", nil
|
|
}
|
|
case *kops.InstanceGroup:
|
|
editedObj := kops.InstanceGroup{}
|
|
err := yaml.UnmarshalStrict([]byte(yamlString), &editedObj)
|
|
if err == nil {
|
|
return "", nil
|
|
}
|
|
default:
|
|
panic("unknown object")
|
|
}
|
|
|
|
// Convert the cluster back to YAML for comparison purposes
|
|
newYaml, err := kopscodecs.ToVersionedYaml(object)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
|
|
// Marshal the edited YAML to a map; this will prevent bad diffs due to sorting
|
|
var editedYamlObj map[string]interface{}
|
|
err = yaml.UnmarshalStrict([]byte(yamlString), &editedYamlObj)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
|
|
// Convert the object back to YAML so that we can compare it to the cluster YAML
|
|
editedYaml, err := utils.YamlMarshal(editedYamlObj)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
|
|
if !bytes.Equal(editedYaml, newYaml) {
|
|
discardedChanges := diff.FormatDiff(string(newYaml), string(editedYaml))
|
|
return discardedChanges, nil
|
|
}
|
|
|
|
return "", nil
|
|
}
|