kubernetes internal 源码
kubernetes internal 代码
文件路径：/staging/src/k8s.io/code-generator/cmd/applyconfiguration-gen/generators/internal.go
/*
Copyright 2021 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 generators
import (
"io"
"gopkg.in/yaml.v2"
"k8s.io/kube-openapi/pkg/schemaconv"
"k8s.io/gengo/generator"
"k8s.io/gengo/namer"
"k8s.io/gengo/types"
)
// utilGenerator generates the ForKind() utility function.
type internalGenerator struct {
generator.DefaultGen
outputPackage string
imports namer.ImportTracker
typeModels *typeModels
filtered bool
}
var _ generator.Generator = &internalGenerator{}
func (g *internalGenerator) Filter(*generator.Context, *types.Type) bool {
// generate file exactly once
if !g.filtered {
g.filtered = true
return true
}
return false
}
func (g *internalGenerator) Namers(*generator.Context) namer.NameSystems {
return namer.NameSystems{
"raw": namer.NewRawNamer(g.outputPackage, g.imports),
"singularKind": namer.NewPublicNamer(0),
}
}
func (g *internalGenerator) Imports(*generator.Context) (imports []string) {
return g.imports.ImportLines()
}
func (g *internalGenerator) GenerateType(c *generator.Context, _ *types.Type, w io.Writer) error {
sw := generator.NewSnippetWriter(w, c, "{{", "}}")
schema, err := schemaconv.ToSchema(g.typeModels.models)
if err != nil {
return err
}
schemaYAML, err := yaml.Marshal(schema)
if err != nil {
return err
}
sw.Do(schemaBlock, map[string]interface{}{
"schemaYAML": string(schemaYAML),
"smdParser": smdParser,
"smdNewParser": smdNewParser,
"yamlObject": yamlObject,
"yamlUnmarshal": yamlUnmarshal,
})
return sw.Error()
}
var schemaBlock = `
func Parser() *{{.smdParser|raw}} {
parserOnce.Do(func() {
var err error
parser, err = {{.smdNewParser|raw}}(schemaYAML)
if err != nil {
panic(fmt.Sprintf("Failed to parse schema: %v", err))
}
})
return parser
}
var parserOnce sync.Once
var parser *{{.smdParser|raw}}
var schemaYAML = {{.yamlObject|raw}}(` + "`{{.schemaYAML}}`" + `)
`
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