Kubernetes源码-SchemeBuilder

SchemeBuilder

用于存放处理 Scheme 的函数

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1	type SchemeBuilder []func(*Scheme) error

NewSchemeBuilder

创建并初始化 SchemeBuilder

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func NewSchemeBuilder(funcs ...func(*Scheme) error) SchemeBuilder {     var sb SchemeBuilder     sb.Register(funcs...)     return sb }

Register

向 SchemeBuilder 注册处理 Scheme 的函数

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func (sb *SchemeBuilder) Register(funcs ...func(*Scheme) error) {     for _, f := range funcs {         *sb = append(*sb, f)     } }

AddToScheme

将 SchemeBuilder 中的函数作用于 Scheme

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func (sb *SchemeBuilder) AddToScheme(s *Scheme) error {     for _, f := range *sb {         if err := f(s); err != nil {             return err         }     }     return nil }

Usage

v1

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package SchemeBuilderV1   import "k8s.io/apimachinery/pkg/runtime"   var (     SchemeBuilder = runtime.NewSchemeBuilder(addKnownTypes)     AddToScheme = SchemeBuilder.AddToScheme )   func addKnownTypes(scheme *runtime.Scheme) error { ... }

v2

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package SchemeBuilderV2   import "k8s.io/apimachinery/pkg/runtime"   var (     SchemeBuilder = runtime.NewSchemeBuilder()     AddToScheme = SchemeBuilder.AddToScheme )   func init() { SchemeBuilder.Register(addKnownTypes) }   func addKnownTypes(scheme *runtime.Scheme) error { ... }

AddToScheme

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scheme := runtime.NewScheme() if err := SchemeBuilderV1.AddToScheme(scheme); err != nil { ... } if err := SchemeBuilderV2.AddToScheme(scheme); err != nil { ... }