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// Copyright Istio 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.
/*
util.go contains utility function for dealing with trees.
*/
package tpath
import (
"gopkg.in/yaml.v2"
yaml2 "sigs.k8s.io/yaml"
)
import (
"github.com/apache/dubbo-go-pixiu/operator/pkg/util"
)
// AddSpecRoot adds a root node called "spec" to the given tree and returns the resulting tree.
func AddSpecRoot(tree string) (string, error) {
t, nt := make(map[string]interface{}), make(map[string]interface{})
if err := yaml.Unmarshal([]byte(tree), &t); err != nil {
return "", err
}
nt["spec"] = t
out, err := yaml.Marshal(nt)
if err != nil {
return "", err
}
return string(out), nil
}
// GetSpecSubtree returns the subtree under "spec".
func GetSpecSubtree(yml string) (string, error) {
return GetConfigSubtree(yml, "spec")
}
// GetConfigSubtree returns the subtree at the given path.
func GetConfigSubtree(manifest, path string) (string, error) {
root := make(map[string]interface{})
if err := yaml2.Unmarshal([]byte(manifest), &root); err != nil {
return "", err
}
nc, _, err := GetPathContext(root, util.PathFromString(path), false)
if err != nil {
return "", err
}
out, err := yaml2.Marshal(nc.Node)
if err != nil {
return "", err
}
return string(out), nil
}