service/dynamodb/dynamodbattribute: UnmarshalTypeError: cannot unmarshal string into Go value of type kind.UserStatus

[zero-master]

Version of AWS SDK for Go?

Updated using go get -u github.com/aws/aws-sdk-go/... today

Version of Go (go version)?

go version go1.10.1 linux/amd64

What issue did you see?

`2018/04/27 18:28:36 UnmarshalTypeError: cannot unmarshal string into Go value of type kind.UserStatus

Steps to reproduce

I am using:
https://github.com/campoy/jsonenums
https://godoc.org/golang.org/x/tools/cmd/stringer

package kind


//go:generate stringer -type=UserStatus
//go:generate jsonenums -type=UserStatus
type UserStatus int

const (
	IN_ACTIVE UserStatus = iota
	EMAIL_UNVERIFIED
	ACTIVE
	CLOSED
	DELETED
)

type User struct {
	ID                 string             `json:"id"`
	Status             kind.UserStatus    `json:"status"`
}

user := model.User{}
	resp, err := db.GetItem(&dynamodb.GetItemInput{
		TableName: aws.String(userTable),
		Key: map[string]*dynamodb.AttributeValue{
			"id": {
				S: aws.String(ID),
			},
		},
	})
	if err != nil {
		return user, err
	}
	if len(resp.Item) == 0 {
		return user, userNotFound
	}
	log.Println(resp)
	err = dynamodbattribute.Unmarshal(&dynamodb.AttributeValue{M: resp.Item}, &user)

Then I get:

`2018/04/27 18:28:36 UnmarshalTypeError: cannot unmarshal string into Go value of type kind.UserStatus

Put and Update has no issue with marshaling, I get errors only while unmarshalling.

Does it support enum in struct fields?

[zero-master]

Solved by defining:

func (r UserStatus) MarshalDynamoDBAttributeValue(av *dynamodb.AttributeValue) error {
	s, ok := _UserStatusValueToName[r]
	if !ok {
		return fmt.Errorf("invalid UserStatus: %d", r)
	}
	av.S = &s
	return nil
}

func (r *UserStatus) UnmarshalDynamoDBAttributeValue(av *dynamodb.AttributeValue) error {
	s := *av.S
	v, ok := _UserStatusNameToValue[s]
	if !ok {
		return fmt.Errorf("invalid UserStatus %q", s)
	}
	*r = v
	return nil
}