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Use one copy of EnforcePtr

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This commit is contained in:
Clayton Coleman 2014-10-09 18:38:34 -04:00
parent d488e238dd
commit 13992837ea
3 changed files with 6 additions and 17 deletions
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2
pkg/conversion/encode.go
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@ -51,7 +51,7 @@ import (
// //
func (s *Scheme) EncodeToVersion(obj interface{}, destVersion string) (data []byte, err error) { func (s *Scheme) EncodeToVersion(obj interface{}, destVersion string) (data []byte, err error) {
obj = maybeCopy(obj) obj = maybeCopy(obj)
v, _ := enforcePtr(obj) // maybeCopy guarantees a pointer v, _ := EnforcePtr(obj) // maybeCopy guarantees a pointer
if _, registered := s.typeToVersion[v.Type()]; !registered { if _, registered := s.typeToVersion[v.Type()]; !registered {
return nil, fmt.Errorf("type %v is not registered and it will be impossible to Decode it, therefore Encode will refuse to encode it.", v.Type()) return nil, fmt.Errorf("type %v is not registered and it will be impossible to Decode it, therefore Encode will refuse to encode it.", v.Type())
} }

13
pkg/conversion/scheme.go
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@ -228,7 +228,7 @@ func (s *Scheme) DataVersionAndKind(data []byte) (version, kind string, err erro
// ObjectVersionAndKind returns the API version and kind of the go object, // ObjectVersionAndKind returns the API version and kind of the go object,
// or an error if it's not a pointer or is unregistered. // or an error if it's not a pointer or is unregistered.
func (s *Scheme) ObjectVersionAndKind(obj interface{}) (apiVersion, kind string, err error) { func (s *Scheme) ObjectVersionAndKind(obj interface{}) (apiVersion, kind string, err error) {
v, err := enforcePtr(obj) v, err := EnforcePtr(obj)
if err != nil { if err != nil {
return "", "", err return "", "", err
} }
@ -261,14 +261,3 @@ func maybeCopy(obj interface{}) interface{} {
v2.Elem().Set(v) v2.Elem().Set(v)
return v2.Interface() return v2.Interface()
} }
// enforcePtr ensures that obj is a pointer of some sort. Returns a reflect.Value
// of the dereferenced pointer, ensuring that it is settable/addressable.
// Returns an error if this is not possible.
func enforcePtr(obj interface{}) (reflect.Value, error) {
v := reflect.ValueOf(obj)
if v.Kind() != reflect.Ptr {
return reflect.Value{}, fmt.Errorf("expected pointer, but got %v", v.Type().Name())
}
return v.Elem(), nil
}

8
pkg/runtime/scheme.go
View File

@ -222,7 +222,7 @@ func (s *Scheme) Convert(in, out interface{}) error {
// FindTypeMeta takes an arbitary api type, returns pointer to its TypeMeta field. // FindTypeMeta takes an arbitary api type, returns pointer to its TypeMeta field.
// obj must be a pointer to an api type. // obj must be a pointer to an api type.
func FindTypeMeta(obj Object) (TypeMetaInterface, error) { func FindTypeMeta(obj Object) (TypeMetaInterface, error) {
v, err := enforcePtr(obj) v, err := conversion.EnforcePtr(obj)
if err != nil { if err != nil {
return nil, err return nil, err
} }
@ -231,11 +231,11 @@ func FindTypeMeta(obj Object) (TypeMetaInterface, error) {
if v.Kind() != reflect.Struct { if v.Kind() != reflect.Struct {
return nil, fmt.Errorf("expected struct, but got %v: %v (%#v)", v.Kind(), name, v.Interface()) return nil, fmt.Errorf("expected struct, but got %v: %v (%#v)", v.Kind(), name, v.Interface())
} }
jsonBase := v.FieldByName("TypeMeta") typeMeta := v.FieldByName("TypeMeta")
if !jsonBase.IsValid() { if !typeMeta.IsValid() {
return nil, fmt.Errorf("struct %v lacks embedded JSON type", name) return nil, fmt.Errorf("struct %v lacks embedded JSON type", name)
} }
g, err := newGenericTypeMeta(jsonBase) g, err := newGenericTypeMeta(typeMeta)
if err != nil { if err != nil {
return nil, err return nil, err
} }