| // 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. |
| |
| package yml |
| |
| import ( |
| "encoding/json" |
| "fmt" |
| "strings" |
| ) |
| |
| import ( |
| "sigs.k8s.io/yaml" |
| ) |
| |
| // Metadata metadata for a kubernetes resource. |
| type Metadata struct { |
| Name string `json:"name"` |
| Namespace string `json:"namespace"` |
| } |
| |
| // Descriptor a descriptor for a kubernetes resource. |
| type Descriptor struct { |
| Kind string `json:"kind"` |
| Group string `json:"group"` |
| APIVersion string `json:"apiVersion"` |
| Metadata Metadata `json:"metadata"` |
| } |
| |
| // Part is a single-part yaml source, along with its descriptor. |
| type Part struct { |
| Contents string |
| Descriptor Descriptor |
| } |
| |
| // Parse parses the given multi-part yaml text, and returns as Parts. |
| func Parse(yamlText string) ([]Part, error) { |
| splitContent := SplitString(yamlText) |
| parts := make([]Part, 0, len(splitContent)) |
| for _, part := range splitContent { |
| if len(part) > 0 { |
| descriptor, err := ParseDescriptor(part) |
| if err != nil { |
| return nil, err |
| } |
| |
| parts = append(parts, Part{ |
| Contents: part, |
| Descriptor: descriptor, |
| }) |
| } |
| } |
| return parts, nil |
| } |
| |
| // ParseDescriptor parses the given single-part yaml and generates the descriptor. |
| func ParseDescriptor(yamlText string) (Descriptor, error) { |
| d := Descriptor{} |
| jsonText, err := yaml.YAMLToJSON([]byte(yamlText)) |
| if err != nil { |
| return Descriptor{}, fmt.Errorf("failed converting YAML to JSON: %v", err) |
| } |
| |
| if err := json.Unmarshal(jsonText, &d); err != nil { |
| return Descriptor{}, fmt.Errorf("failed parsing descriptor: %v", err) |
| } |
| |
| parts := strings.Split(d.APIVersion, "/") |
| switch len(parts) { |
| case 1: |
| d.APIVersion = parts[0] |
| case 2: |
| d.Group = parts[0] |
| d.APIVersion = parts[1] |
| default: |
| return Descriptor{}, fmt.Errorf("unexpected apiGroup: %q", d.APIVersion) |
| } |
| |
| return d, nil |
| } |