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package attributevalue
import (
"fmt"
ddb "github.com/aws/aws-sdk-go-v2/service/dynamodb/types"
streams "github.com/aws/aws-sdk-go-v2/service/dynamodbstreams/types"
)
// FromDynamoDBMap converts a map of Amazon DynamoDB
// AttributeValues, and all nested members.
func FromDynamoDBMap(from map[string]ddb.AttributeValue) (to map[string]streams.AttributeValue, err error) {
to = make(map[string]streams.AttributeValue, len(from))
for field, value := range from {
to[field], err = FromDynamoDB(value)
if err != nil {
return nil, err
}
}
return to, nil
}
// FromDynamoDBList converts a slice of Amazon DynamoDB
// AttributeValues, and all nested members.
func FromDynamoDBList(from []ddb.AttributeValue) (to []streams.AttributeValue, err error) {
to = make([]streams.AttributeValue, len(from))
for i := 0; i < len(from); i++ {
to[i], err = FromDynamoDB(from[i])
if err != nil {
return nil, err
}
}
return to, nil
}
// FromDynamoDB converts an Amazon DynamoDB AttributeValue, and
// all nested members.
func FromDynamoDB(from ddb.AttributeValue) (streams.AttributeValue, error) {
switch tv := from.(type) {
case *ddb.AttributeValueMemberNULL:
return &streams.AttributeValueMemberNULL{Value: tv.Value}, nil
case *ddb.AttributeValueMemberBOOL:
return &streams.AttributeValueMemberBOOL{Value: tv.Value}, nil
case *ddb.AttributeValueMemberB:
return &streams.AttributeValueMemberB{Value: tv.Value}, nil
case *ddb.AttributeValueMemberBS:
bs := make([][]byte, len(tv.Value))
for i := 0; i < len(tv.Value); i++ {
bs[i] = append([]byte{}, tv.Value[i]...)
}
return &streams.AttributeValueMemberBS{Value: bs}, nil
case *ddb.AttributeValueMemberN:
return &streams.AttributeValueMemberN{Value: tv.Value}, nil
case *ddb.AttributeValueMemberNS:
return &streams.AttributeValueMemberNS{Value: append([]string{}, tv.Value...)}, nil
case *ddb.AttributeValueMemberS:
return &streams.AttributeValueMemberS{Value: tv.Value}, nil
case *ddb.AttributeValueMemberSS:
return &streams.AttributeValueMemberSS{Value: append([]string{}, tv.Value...)}, nil
case *ddb.AttributeValueMemberL:
values, err := FromDynamoDBList(tv.Value)
if err != nil {
return nil, err
}
return &streams.AttributeValueMemberL{Value: values}, nil
case *ddb.AttributeValueMemberM:
values, err := FromDynamoDBMap(tv.Value)
if err != nil {
return nil, err
}
return &streams.AttributeValueMemberM{Value: values}, nil
default:
return nil, fmt.Errorf("unknown AttributeValue union member, %T", from)
}
}
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