Scala: merging two JSON files using AmazonS3Client getObject Futures - json

Question

I'm trying to merge two JSON files from an S3 bucket. First file pulls fine, but not the second file.
val eventLogJsonFuture = Future(new AmazonS3Client(credentials))
.map(_.getObject(logBucket, logDirectory + "/" + id + "/event_log.json"))
.map(_.getObjectContent)
.map(Source.fromInputStream(_))
.map(_.mkString)
.map(Json.parse) map { archiveEvents =>
Json.toJson(Json.obj("success" -> true, "data" -> archiveEvents))
} recover {
case NonFatal(error) =>
Json.obj("success" -> false, "errorCode" -> "archive_does_not_exist", "message" -> error.getMessage)
}
val infoJsonFuture = Future(new AmazonS3Client(credentials))
.map(_.getObject(logBucket, logDirectory + "/" + id + "/info.json"))
.map(_.getObjectContent)
.map(Source.fromInputStream(_))
.map(_.mkString)
.map(Json.parse) map { archiveInfo =>
Json.toJson(Json.obj("success" -> true, "data" -> archiveInfo))
} recover {
case NonFatal(error) =>
Json.obj("success" -> false, "errorCode" -> "archive_does_not_exist", "message" -> error.getMessage)
}
val combinedJson = for {
eventLogJson <- eventLogJsonFuture
infoJson <- infoJsonFuture
}
yield {
Json.obj("info" -> infoJson, "events" -> eventLogJson)
}
This is what the result JSON looks like ...
Is there another (better?) way of writing this?

Answer 1

Should you wait 3 parts of JSON from different source ?
I can recommend solution with case class DTO
Simple example:
val firstJson = Future {
//case class json1(...)
}
val secondJson = Future {
//case class json2(...)
...
}
val finalFson = for {
f <- first
s <- second
} yield (f, s)
finalJson onComplete {
case Success(jsons) => {
//merge json here
jsons._1 + jsons._2 ...
}