CODEWITHSUNDEEP
scalajacksonbase64akka
slwr
slwr

Reputation: 23

Base64 encoding for akka ByteString

I've been searching a way to change Scala's Array[Byte] to some other immutable collection class. I'd like to refactor those said bytearrays to a more elegant Akka ByteStrings, however I've ran into a problem with encoding. As far as I know (I'm a scala newbie) encoding ByteStrings and Array[Bytes] with Jackson serialization returns different results for both datatypes using same values using Base64. So my question is, is there a nice and clean way to refactor Arrays to immutable collections while keeping the same Base64 serialized values as the old Array had?

Upvotes: 2

Views: 1082

Answers (1)

Stephen
Stephen

Reputation: 4296

I'd use circe or argonaut instead of Jackson for the json serialization. They easily allow you to provide a custom encoder for different types.

implicit val byteArrayEncoder = 
    Encoder.encodeString.contramap[Array[Byte]](new String(_))
implicit val byteStringEncoder = 
    Encoder.encodeString.contramap[ByteString](_.UTF_8)

Then you can use it like ..

import io.circe._, io.circe.generic.auto._, io.circe.parser._, io.circe.syntax._

case class Whatever(bytes: Array[Byte], bstring: ByteString)

Whatever(???).asJson.nospaces

for more see

https://circe.github.io/circe/

Upvotes: 2

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