Hi all,
Sorry if this is a dumb question, but I'm only starting with akka-http
and don't know anything (yet) about akka-streams.
While migrating a client from spray to akka-http, I found myself doing
this kind of thing:
httpBackend.singleRequest(request).flatMap { r =>
r.entity.dataBytes.runFold(ByteString.empty)(_ ++ _).
map(_.utf8String).map { body ⇒
import DefaultJsonProtocol._
body.parseJson.asJsObject("Unknown response format " +
body)
}
}
The idea is to return a Spray JsObject from the response entity (or fail
the future if not).
But I've mostly seen examples written with the flow variant (ie
Source.single(request).mapAsync(1)).
It is my understanding that the first way materializes the stream
earlier than the second one.
But I'm wondering what are the downsides of the first approach compared
to the second one?
--
Brice Figureau <[email protected]>
--
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