expiry time functionality & request validation

vaildator.go

@@ -0,0 +1,48 @@
+package main
+
+import (
+	"reflect"
+	"sync"
+
+	"gopkg.in/gin-gonic/gin.v1/binding"
+	"gopkg.in/go-playground/validator.v9"
+)
+
+// DefaultValidator override.
+type DefaultValidator struct {
+	once     sync.Once
+	validate *validator.Validate
+}
+
+var _ binding.StructValidator = &DefaultValidator{}
+
+// ValidateStruct override.
+func (v *DefaultValidator) ValidateStruct(obj interface{}) error {
+	if kindOfData(obj) == reflect.Struct {
+		v.lazyinit()
+
+		if err := v.validate.Struct(obj); err != nil {
+			return error(err)
+		}
+	}
+
+	return nil
+}
+
+func (v *DefaultValidator) lazyinit() {
+	v.once.Do(func() {
+		v.validate = validator.New()
+		v.validate.SetTagName("binding")
+	})
+}
+
+func kindOfData(data interface{}) reflect.Kind {
+
+	value := reflect.ValueOf(data)
+	valueType := value.Kind()
+
+	if valueType == reflect.Ptr {
+		valueType = value.Elem().Kind()
+	}
+	return valueType
+}