34 lines
635 B
Go
34 lines
635 B
Go
package metadata
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import (
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"reflect"
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)
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type Metadata struct {
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ID string `json:"id"`
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ETag string `json:"etag"`
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Generation int64 `json:"generation"`
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}
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func HasMetadata(obj any) bool {
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return getMetadataField(obj).IsValid()
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}
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func GetMetadata(obj any) *Metadata {
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return getMetadataField(obj).Addr().Interface().(*Metadata)
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}
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func ClearMetadata(obj any) {
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SetMetadata(obj, &Metadata{})
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}
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func SetMetadata(obj any, md *Metadata) {
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getMetadataField(obj).Set(reflect.ValueOf(*md))
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}
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func getMetadataField(obj any) reflect.Value {
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v := reflect.ValueOf(obj)
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return reflect.Indirect(v).FieldByName("Metadata")
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}
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