Given some DynamoDB JSON via a DynamoDB NewImage stream event, how do I unmarshall it to regular JSON?
{"updated_at":{"N":"146548182"},"uuid":{"S":"foo"},"status":{"S":"new"}}
Normally I would use AWS.DynamoDB.DocumentClient, however I can't seem to find a generic Marshall/Unmarshall function.
Sidenote: Do I lose anything unmarshalling DynamoDB JSON to JSON and back again?
You can use the AWS.DynamoDB.Converter.unmarshall
function. Calling the following will return { updated_at: 146548182, uuid: 'foo', status: 'new' }
:
AWS.DynamoDB.Converter.unmarshall({
"updated_at":{"N":"146548182"},
"uuid":{"S":"foo"},
"status":{"S":"new"}
})
Everything that can be modeled in DynamoDB's marshalled JSON format can be safely translated to and from JS objects.