| // 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 |
| } |