| // 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 ast |
| |
| import ( |
| "encoding/json" |
| ) |
| |
| import ( |
| "sigs.k8s.io/yaml" |
| ) |
| |
| import ( |
| "github.com/apache/dubbo-go-pixiu/pkg/config/validation" |
| "github.com/apache/dubbo-go-pixiu/pkg/util/strcase" |
| ) |
| |
| // Metadata is the top-level container. |
| type Metadata struct { |
| Collections []*Collection `json:"collections"` |
| Resources []*Resource `json:"resources"` |
| } |
| |
| var _ json.Unmarshaler = &Metadata{} |
| |
| // Collection metadata. Describes basic structure of collections. |
| type Collection struct { |
| Name string `json:"name"` |
| VariableName string `json:"variableName"` |
| Description string `json:"description"` |
| Group string `json:"group"` |
| Kind string `json:"kind"` |
| Pilot bool `json:"pilot"` |
| Builtin bool `json:"builtin"` |
| Deprecated bool `json:"deprecated"` |
| } |
| |
| // Resource metadata for resources contained within a collection. |
| type Resource struct { |
| Group string `json:"group"` |
| Version string `json:"version"` |
| Kind string `json:"kind"` |
| Plural string `json:"plural"` |
| ClusterScoped bool `json:"clusterScoped"` |
| Proto string `json:"proto"` |
| ProtoPackage string `json:"protoPackage"` |
| StatusProto string `json:"statusProto"` |
| StatusProtoPackage string `json:"statusProtoPackage"` |
| Validate string `json:"validate"` |
| Description string `json:"description"` |
| } |
| |
| // FindResourceForGroupKind looks up a resource with the given group and kind. Returns nil if not found. |
| func (m *Metadata) FindResourceForGroupKind(group, kind string) *Resource { |
| for _, r := range m.Resources { |
| if r.Group == group && r.Kind == kind { |
| return r |
| } |
| } |
| return nil |
| } |
| |
| // UnmarshalJSON implements json.Unmarshaler |
| func (m *Metadata) UnmarshalJSON(data []byte) error { |
| var in struct { |
| Collections []*Collection `json:"collections"` |
| Resources []*Resource `json:"resources"` |
| } |
| |
| if err := json.Unmarshal(data, &in); err != nil { |
| return err |
| } |
| |
| m.Collections = in.Collections |
| m.Resources = in.Resources |
| |
| // Process resources. |
| for i, r := range m.Resources { |
| if r.Validate == "" { |
| validateFn := "Validate" + asResourceVariableName(r.Kind) |
| if !validation.IsValidateFunc(validateFn) { |
| validateFn = "EmptyValidate" |
| } |
| m.Resources[i].Validate = validateFn |
| } |
| } |
| |
| // Process collections. |
| for i, c := range m.Collections { |
| // If no variable name was specified, use default. |
| if c.VariableName == "" { |
| m.Collections[i].VariableName = asCollectionVariableName(c.Name) |
| } |
| |
| if c.Description == "" { |
| m.Collections[i].Description = "describes the collection " + c.Name |
| } |
| } |
| |
| return nil |
| } |
| |
| // Parse and return a yaml representation of Metadata |
| func Parse(yamlText string) (*Metadata, error) { |
| var s Metadata |
| err := yaml.Unmarshal([]byte(yamlText), &s) |
| if err != nil { |
| return nil, err |
| } |
| return &s, nil |
| } |
| |
| func asResourceVariableName(n string) string { |
| return strcase.CamelCase(n) |
| } |
| |
| func asCollectionVariableName(n string) string { |
| n = strcase.CamelCaseWithSeparator(n, "/") |
| n = strcase.CamelCaseWithSeparator(n, ".") |
| return n |
| } |