Golang package for dynamodb with map, list and JSON support
I am trying to store JSON objects as such in dynamodb using the new added support for JSON type (I understand JSON type is basically maps + lists) so that I can query and modify nested JSON documents.
I couldn't find a golang package for dynamodb with support for the newly added datatypes.
Any suggestion on this please?
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3 answers
The new Amazon-backed Golang API that includes DynamoDB is here: https://github.com/awslabs/aws-sdk-go
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To put JSON in aws-dynamodb, you first need to iterate over each attribute of the JSON structure and convert it to dynamodb.AttributeValue as follows:
func (e *DB) saveToDynamodb(data map[string]interface{}){
var vv=make(map[string]*dynamodb.AttributeValue)
for k,v:=range data{
x:=(v.(string)) //assert type as required
xx:=&(x)
vv[k]=&dynamodb.AttributeValue{S: xx,}
}
//s:=data["asset_id"].(string)
params := &dynamodb.PutItemInput{
Item: vv,
TableName: aws.String("Asset_Data"), // Required
}
resp, err := e.dynamodb.PutItem(params)
if err != nil {
// Print the error, cast err to awserr.Error to get the Code and
// Message from an error.
fmt.Println(err.Error())
return
}
// Pretty-print the response data.
fmt.Println(resp)
}
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