gin/binding/default_validator.go

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package binding
import (
"reflect"
"sync"
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"gopkg.in/go-playground/validator.v8"
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)
type defaultValidator struct {
once sync.Once
validate *validator.Validate
}
var _ StructValidator = &defaultValidator{}
func (v *defaultValidator) ValidateStruct(obj interface{}) error {
if kindOfData(obj) == reflect.Struct {
v.lazyinit()
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if err := v.validate.Struct(obj); err != nil {
return error(err)
}
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}
return nil
}
func (v *defaultValidator) lazyinit() {
v.once.Do(func() {
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config := &validator.Config{TagName: "binding"}
v.validate = validator.New(config)
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})
}
func kindOfData(data interface{}) reflect.Kind {
value := reflect.ValueOf(data)
valueType := value.Kind()
if valueType == reflect.Ptr {
valueType = value.Elem().Kind()
}
return valueType
}