Description
Acknowledgements
- I have searched (https://github.com/aws/aws-sdk/issues?q=is%3Aissue) for past instances of this issue
- I have verified all of my SDK modules are up-to-date (you can perform a bulk update with
go get -u github.com/aws/aws-sdk-go-v2/...)
Describe the bug
We need a way to convert an a raw json to an object like this []map[string]types.attributevalue using the attributevalue package.
I am trying to use dynamodbattribute.MarshalMap to accomplish this. But, when I do this, the maps aren't flattened, and our usage requires the maps flattened because we're querying dynamo using a step function and passing the results into a lambda.
Here is an example:
package main
import (
"fmt"
"log"
"strings"
"github.com/aws/aws-sdk-go/service/dynamodb/dynamodbattribute"
)
type Item struct {
Title string `json:"title"`
Rating float64 `json:"rating"`
NestedField map[string]interface{} `json:"nestedField"`
}
func main() {
item := Item{
Title: "test1",
Rating: 8.5,
NestedField: map[string]interface{}{
"key1": "value1",
"key2": map[string]interface{}{
"key3": "value2",
},
},
}
av, err := dynamodbattribute.MarshalMap(item)
if err != nil {
log.Fatalf("Got error marshalling map: %s", err)
}
var avStr string
for k, v := range av {
avStr += fmt.Sprintf("%s:%+v ", k, v)
}
fmt.Println(strings.TrimSpace(avStr))
}Is there already way to flatten out the maps? Or is there a work around for this?
Expected Behavior
We would like the maps to be flattened out because we're querying dynamo using a step function and passing the results into a lambda.
Current Behavior
dynamodbattribute.MarshalMap outputs maps that aren't flattened.
Reproduction Steps
Here's an example:
package main
import (
"fmt"
"log"
"strings"
"github.com/aws/aws-sdk-go/service/dynamodb/dynamodbattribute"
)
type Item struct {
Title string `json:"title"`
Rating float64 `json:"rating"`
NestedField map[string]interface{} `json:"nestedField"`
}
func main() {
item := Item{
Title: "test1",
Rating: 8.5,
NestedField: map[string]interface{}{
"key1": "value1",
"key2": map[string]interface{}{
"key3": "value2",
},
},
}
av, err := dynamodbattribute.MarshalMap(item)
if err != nil {
log.Fatalf("Got error marshalling map: %s", err)
}
var avStr string
for k, v := range av {
avStr += fmt.Sprintf("%s:%+v ", k, v)
}
fmt.Println(strings.TrimSpace(avStr))
}Possible Solution
No response
Additional Information/Context
No response
AWS Go SDK V2 Module Versions Used
github.com/aws/aws-sdk-go-v2 v1.30.3
github.com/aws/aws-sdk-go-v2/feature/dynamodb/attributevalue v1.14.10
Compiler and Version used
go version go1.22.4 darwin/arm64
Operating System and version
macOS Sonoma Version 14.4