From f5566b659c4d52de0ff157713fe920671f23a147 Mon Sep 17 00:00:00 2001
From: adamw <adam@warski.org>
Date: Sat, 8 Jul 2017 20:01:53 +0200
Subject: Setting bodies in the Akka impl

---
 .../sttp/akkahttp/AkkaHttpSttpHandler.scala        | 54 +++++++++++++---------
 1 file changed, 32 insertions(+), 22 deletions(-)

(limited to 'akka-http-handler')

diff --git a/akka-http-handler/src/main/scala/com/softwaremill/sttp/akkahttp/AkkaHttpSttpHandler.scala b/akka-http-handler/src/main/scala/com/softwaremill/sttp/akkahttp/AkkaHttpSttpHandler.scala
index 78d6637..df40fc9 100644
--- a/akka-http-handler/src/main/scala/com/softwaremill/sttp/akkahttp/AkkaHttpSttpHandler.scala
+++ b/akka-http-handler/src/main/scala/com/softwaremill/sttp/akkahttp/AkkaHttpSttpHandler.scala
@@ -7,12 +7,13 @@ import akka.http.scaladsl.model._
 import akka.http.scaladsl.model.headers.`Content-Type`
 import akka.http.scaladsl.model.ContentTypes.`application/octet-stream`
 import akka.stream.ActorMaterializer
-import akka.stream.scaladsl.Source
+import akka.stream.scaladsl.{Source, StreamConverters}
 import akka.util.ByteString
 import com.softwaremill.sttp._
 import com.softwaremill.sttp.model._
 
 import scala.concurrent.Future
+import scala.util.{Failure, Success, Try}
 
 class AkkaHttpSttpHandler(actorSystem: ActorSystem) extends SttpHandler[Future, Source[ByteString, Any]] {
 
@@ -23,7 +24,7 @@ class AkkaHttpSttpHandler(actorSystem: ActorSystem) extends SttpHandler[Future,
   import as.dispatcher
 
   override def send[T](r: Request, responseAs: ResponseAs[T, Source[ByteString, Any]]): Future[Response[T]] = {
-    requestToAkka(r).flatMap(setBodyOnAkka(r, r.body, _)).flatMap(Http().singleRequest(_)).flatMap { hr =>
+    requestToAkka(r).map(setBodyOnAkka(r, r.body, _).get).flatMap(Http().singleRequest(_)).flatMap { hr =>
       val code = hr.status.intValue()
       bodyFromAkka(responseAs, hr).map(Response(code, _))
     }
@@ -65,7 +66,7 @@ class AkkaHttpSttpHandler(actorSystem: ActorSystem) extends SttpHandler[Future,
 
   private def requestToAkka(r: Request): Future[HttpRequest] = {
     val ar = HttpRequest(uri = r.uri.toString, method = methodToAkka(r.method))
-    val parsed = r.headers.map(h => HttpHeader.parse(h._1, h._2))
+    val parsed = r.headers.filterNot(isContentType).map(h => HttpHeader.parse(h._1, h._2))
     val errors = parsed.collect {
       case ParsingResult.Error(e) => e
     }
@@ -80,36 +81,45 @@ class AkkaHttpSttpHandler(actorSystem: ActorSystem) extends SttpHandler[Future,
     }
   }
 
-  private def setBodyOnAkka(r: Request, body: RequestBody, ar: HttpRequest): Future[HttpRequest] = body match {
-    case NoBody => Future.successful(ar)
-    case StringBody(b, encoding) => Future.successful(ar.withEntity(b)) // TODO
-    case ByteArrayBody(b) => Future.successful(ar.withEntity(b))
-    case ByteBufferBody(b) => Future.successful(ar.withEntity(ByteString(b)))
-    case InputStreamBody(b) => Future.successful(ar) //TODO
-    case FileBody(b) =>  Future.successful(ar)//TODO
-    case PathBody(b) => Future.successful(ar)       //TODO
-    case sb@SerializableBody(_, _) => setSerializableBodyOnAkka(r, sb, ar)
-  }
+  private def setBodyOnAkka(r: Request, body: RequestBody, ar: HttpRequest): Try[HttpRequest] = {
+    getContentTypeOrOctetStream(r).map { ct =>
+
+      def doSet(body: RequestBody): HttpRequest = body match {
+        case NoBody => ar
+        case StringBody(b, encoding) =>
+          val ctWithEncoding = HttpCharsets.getForKey(encoding).map(hc => ContentType.apply(ct.mediaType, () => hc)).getOrElse(ct)
+          ar.withEntity(ctWithEncoding, b.getBytes(encoding))
+        case ByteArrayBody(b) => ar.withEntity(b)
+        case ByteBufferBody(b) => ar.withEntity(ByteString(b))
+        case InputStreamBody(b) => ar.withEntity(HttpEntity(ct, StreamConverters.fromInputStream(() => b)))
+        case FileBody(b) => ar.withEntity(ct, b.toPath)
+        case PathBody(b) => ar.withEntity(ct, b)
+        case s@SerializableBody(_, _) => doSetSerializable(s)
+      }
 
-  private def setSerializableBodyOnAkka[T](r: Request, body: SerializableBody[T], ar: HttpRequest): Future[HttpRequest] = body match {
-    case SerializableBody(SourceBodySerializer, t) =>
-      getContentTypeOrOctetStream(r).map(ct => ar.withEntity(HttpEntity(ct, t)))
+      def doSetSerializable[T](body: SerializableBody[T]): HttpRequest = body match {
+        case SerializableBody(SourceBodySerializer, t) => ar.withEntity(HttpEntity(ct, t))
+        case SerializableBody(f, t) => doSet(f(t))
+      }
 
-    case SerializableBody(f, t) => setBodyOnAkka(r, f(t), ar)
+      doSet(body)
+    }
   }
 
-  private def getContentTypeOrOctetStream(r: Request): Future[ContentType] = {
+  private def getContentTypeOrOctetStream(r: Request): Try[ContentType] = {
     r.headers
-      .find(_._1.toLowerCase.contains(`Content-Type`.lowercaseName))
+      .find(isContentType)
       .map(_._2)
       .map { ct =>
         ContentType.parse(ct).fold(
-          errors => Future.failed(new RuntimeException(s"Cannot parse content type: $errors")),
-          Future.successful)
+          errors => Failure(new RuntimeException(s"Cannot parse content type: $errors")),
+          Success(_))
       }
-      .getOrElse(Future.successful(`application/octet-stream`))
+      .getOrElse(Success(`application/octet-stream`))
   }
 
+  private def isContentType(header: (String, String)) = header._1.toLowerCase.contains(`Content-Type`.lowercaseName)
+
   def close(): Future[Terminated] = {
     actorSystem.terminate()
   }
-- 
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