├── src
└── main
│ ├── resources
│ ├── testfile.txt
│ └── reference.conf
│ └── scala
│ └── akkahttp
│ ├── TestApp.scala
│ ├── FileDirective.scala
│ └── FileServer.scala
├── .gitignore
├── README.md
├── project
├── plugins.sbt
├── build.properties
└── Build.scala
└── LICENSE
/src/main/resources/testfile.txt:
--------------------------------------------------------------------------------
1 | THIS is a test FILE
--------------------------------------------------------------------------------
/src/main/resources/reference.conf:
--------------------------------------------------------------------------------
1 | akka {
2 | http {
3 | client {
4 | parsing {
5 | max-content-length = 2048m
6 | }
7 | }
8 | server {
9 | parsing {
10 | max-content-length = 2048m
11 | }
12 | }
13 | }
14 | }
15 |
--------------------------------------------------------------------------------
/.gitignore:
--------------------------------------------------------------------------------
1 | # GearPump
2 | logs/
3 |
4 | # Scala
5 | *.class
6 | *.log
7 | .cache/
8 | .history/
9 | .lib/
10 | dist/*
11 | target/
12 | lib_managed/
13 | src_managed/
14 | project/boot/
15 | project/plugins/project/
16 | .scala_dependencies
17 | .worksheet
18 |
19 | # Java
20 | *.jar
21 | *.war
22 | *.ear
23 | hs_err_pid*
24 |
25 | # IntelliJ
26 | /*.iml
27 | out/
28 | .idea/
29 | *.ipr
30 | *.iws
31 | .idea_modules/
32 | atlassian-ide-plugin.xml
33 | com_crashlytics_export_strings.xml
34 |
35 | # Eclipse
36 | .metadata
37 | .project
38 | .cache
39 | .classpath
40 | bin/
41 | tmp/
42 | *.tmp
43 | *.bak
44 | *.swp
45 | *~.nib
46 | local.properties
47 | .settings/
48 | .loadpath
49 | .externalToolBuilders/
50 | *.launch
51 | .target
--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
1 | # akka-http-file-server
2 |
3 | A file server example to download/upload large files with akka-http.
4 |
5 | ## How to use
6 | ```sbt "run-main akkahttp.TestApp"```
7 |
8 | Then Browser http://127.0.0.1:9112/
9 |
10 | ## How it is implemented?
11 | We create a akka-http DSL for this, so it is super easy to create a http file server:
12 |
13 | ```
14 | val route: Route = {
15 | path("upload") {
16 | uploadFile { fileMap =>
17 | complete(ToResponseMarshallable(fileMap))
18 | }
19 | } ~
20 | path("download") {
21 | parameters("file") { file =>
22 | downloadFile(file)
23 | }
24 | }
25 | ```
26 |
27 | ## Used by
28 | Big data streaming engine over Akka:
29 |
30 | Project Gearpump: https://github.com/gearpump/gearpump
31 |
--------------------------------------------------------------------------------
/project/plugins.sbt:
--------------------------------------------------------------------------------
1 | addSbtPlugin("org.scala-js" % "sbt-scalajs" % "0.6.4")
2 |
3 | addSbtPlugin("com.eed3si9n" % "sbt-assembly" % "0.11.2")
4 |
5 | resolvers += Resolver.url("fvunicorn", url("http://dl.bintray.com/fvunicorn/sbt-plugins"))(Resolver.ivyStylePatterns)
6 |
7 | addSbtPlugin("io.gearpump.sbt" % "sbt-pack" % "0.7.6")
8 |
9 | addSbtPlugin("de.johoop" % "jacoco4sbt" % "2.1.6")
10 |
11 | addSbtPlugin("com.gilt" % "sbt-dependency-graph-sugar" % "0.7.4")
12 |
13 | addSbtPlugin("org.xerial.sbt" % "sbt-sonatype" % "0.2.1")
14 |
15 | addSbtPlugin("com.jsuereth" % "sbt-pgp" % "1.0.0")
16 |
17 | addSbtPlugin("com.github.gseitz" % "sbt-release" % "0.8.5")
18 |
19 | resolvers += Classpaths.sbtPluginReleases
20 |
21 | addSbtPlugin("org.scoverage" % "sbt-scoverage" % "1.1.0")
22 |
23 | addSbtPlugin("com.typesafe.sbteclipse" % "sbteclipse-plugin" % "3.0.0")
24 |
--------------------------------------------------------------------------------
/project/build.properties:
--------------------------------------------------------------------------------
1 | #
2 | # Licensed to the Apache Software Foundation (ASF) under one
3 | # or more contributor license agreements. See the NOTICE file
4 | # distributed with this work for additional information
5 | # regarding copyright ownership. The ASF licenses this file
6 | # to you under the Apache License, Version 2.0 (the
7 | # "License"); you may not use this file except in compliance
8 | # with the License. You may obtain a copy of the License at
9 | #
10 | # http://www.apache.org/licenses/LICENSE-2.0
11 | #
12 | # Unless required by applicable law or agreed to in writing, software
13 | # distributed under the License is distributed on an "AS IS" BASIS,
14 | # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 | # See the License for the specific language governing permissions and
16 | # limitations under the License.
17 | #
18 |
19 | sbt.version=0.13.7
20 |
--------------------------------------------------------------------------------
/src/main/scala/akkahttp/TestApp.scala:
--------------------------------------------------------------------------------
1 | package akkahttp
2 |
3 | import java.io.File
4 |
5 | import akka.actor.ActorSystem
6 | import com.typesafe.config.{Config, ConfigFactory}
7 |
8 | import scala.concurrent.Await
9 | import scala.io.Source
10 |
11 | object TestApp extends App {
12 |
13 | val testConf: Config = ConfigFactory.load()
14 |
15 | implicit val system = ActorSystem("ServerTest", testConf)
16 | implicit val dispatcher = system.dispatcher
17 | val host = "127.0.0.1"
18 | val port = 9112
19 |
20 | val server = new FileServer(system, host, 9112)
21 |
22 | //start file server
23 | val binding = server.start
24 | val client = new FileServer.Client(system, host, port)
25 |
26 | // upload the file
27 | val testFile = new File(getClass.getResource("/testfile.txt").toURI())
28 | val fileHandler = client.upload(testFile)
29 |
30 | //download the file
31 | val target = File.createTempFile("testapp_download", "")
32 | val future = fileHandler.flatMap{handler =>
33 | client.download(handler, target)
34 | }
35 |
36 | import scala.concurrent.duration._
37 | Await.result(future, 10 seconds)
38 |
39 | // check the file content.
40 | Source.fromFile(testFile).foreach{
41 | print
42 | }
43 |
44 | println()
45 | // now you can try to browser http://127.0.0.1:9112/
46 | println(s"Browser http://${host}:${port} to test download and upload")
47 | system.awaitTermination()
48 | }
--------------------------------------------------------------------------------
/project/Build.scala:
--------------------------------------------------------------------------------
1 | import com.typesafe.sbt.SbtPgp.autoImport._
2 | import de.johoop.jacoco4sbt.JacocoPlugin.jacoco
3 | import sbt.Keys._
4 | import sbt._
5 | import xerial.sbt.Sonatype._
6 |
7 | object Build extends sbt.Build {
8 | val copySharedSourceFiles = TaskKey[Unit]("copied shared services source code")
9 |
10 | val akkaVersion = "2.3.6"
11 | val slf4jVersion = "1.7.7"
12 |
13 | val commonSettings = Seq(jacoco.settings:_*) ++ sonatypeSettings ++ net.virtualvoid.sbt.graph.Plugin.graphSettings ++
14 | Seq(
15 | scalaVersion := "2.11.5",
16 | resolvers ++= Seq(
17 | "patriknw at bintray" at "http://dl.bintray.com/patriknw/maven",
18 | "maven-repo" at "http://repo.maven.apache.org/maven2",
19 | "maven1-repo" at "http://repo1.maven.org/maven2",
20 | "maven2-repo" at "http://mvnrepository.com/artifact",
21 | "sonatype" at "https://oss.sonatype.org/content/repositories/releases",
22 | "bintray/non" at "http://dl.bintray.com/non/maven"
23 | )
24 | )
25 |
26 | val coreDependencies = Seq(
27 | libraryDependencies ++= Seq(
28 | "org.slf4j" % "slf4j-api" % slf4jVersion,
29 | "org.slf4j" % "slf4j-log4j12" % slf4jVersion,
30 | "com.typesafe.akka" %% "akka-actor" % akkaVersion,
31 | "com.typesafe.akka" %% "akka-remote" % akkaVersion,
32 | "com.typesafe.akka" %% "akka-agent" % akkaVersion,
33 | "com.typesafe.akka" %% "akka-slf4j" % akkaVersion,
34 | "com.typesafe.akka" %% "akka-http-experimental" % "1.0",
35 | "com.typesafe.akka" %% "akka-http-core-experimental" % "1.0",
36 | "com.typesafe.akka" %% "akka-stream-experimental" % "1.0",
37 | "com.typesafe.akka" %% "akka-http-spray-json-experimental"% "1.0",
38 | "com.typesafe.akka" %% "akka-kernel" % akkaVersion
39 | )
40 | )
41 |
42 | lazy val root = Project(
43 | id = "akka-http-file-server",
44 | base = file("."),
45 | settings = commonSettings ++ coreDependencies
46 | )
47 | }
--------------------------------------------------------------------------------
/src/main/scala/akkahttp/FileDirective.scala:
--------------------------------------------------------------------------------
1 | package akkahttp
2 |
3 | import java.io.File
4 |
5 | import akka.http.scaladsl.model.{HttpEntity, MediaTypes, Multipart}
6 | import akka.http.scaladsl.server.Directives._
7 | import akka.http.scaladsl.server._
8 | import akka.stream.Materializer
9 | import akka.stream.io.{SynchronousFileSink, SynchronousFileSource}
10 |
11 | import scala.concurrent.{ExecutionContext, Future}
12 |
13 |
14 | object FileDirective {
15 |
16 | //form field name
17 | type Name = String
18 |
19 | case class FileInfo(fileName: String, targetFile: String, length: Long)
20 |
21 | private def uploadFileImpl(implicit mat: Materializer, ec: ExecutionContext): Directive1[Future[Map[Name, FileInfo]]] = {
22 | Directive[Tuple1[Future[Map[Name, FileInfo]]]] { inner =>
23 | entity(as[Multipart.FormData]) { (formdata: Multipart.FormData) =>
24 | val fileNameMap = formdata.parts.mapAsync(1) { p =>
25 | if (p.filename.isDefined) {
26 | val targetPath = File.createTempFile(s"userfile_${p.name}_${p.filename.getOrElse("")}", "")
27 | val written = p.entity.dataBytes.runWith(SynchronousFileSink(targetPath))
28 | written.map(written =>
29 | Map(p.name -> FileInfo(p.filename.get, targetPath.getAbsolutePath, written)))
30 | } else {
31 | Future(Map.empty[Name, FileInfo])
32 | }
33 | }.runFold(Map.empty[Name, FileInfo])((set, value) => set ++ value)
34 | inner(Tuple1(fileNameMap))
35 | }
36 | }
37 | }
38 |
39 | def uploadFile: Directive1[Map[Name, FileInfo]] = {
40 | Directive[Tuple1[Map[Name, FileInfo]]] { inner =>
41 | extractMaterializer {implicit mat =>
42 | extractExecutionContext {implicit ec =>
43 | uploadFileImpl(mat, ec) { filesFuture =>
44 | ctx => {
45 | filesFuture.map(map => inner(Tuple1(map))).flatMap(route => route(ctx))
46 | }
47 | }
48 | }
49 | }
50 | }
51 | }
52 |
53 | def downloadFile(file: String): Route = {
54 | val f = new File(file)
55 | val responseEntity = HttpEntity(
56 | MediaTypes.`application/octet-stream`,
57 | f.length,
58 | SynchronousFileSource(f, chunkSize = 262144))
59 | complete(responseEntity)
60 | }
61 | }
--------------------------------------------------------------------------------
/src/main/scala/akkahttp/FileServer.scala:
--------------------------------------------------------------------------------
1 | package akkahttp
2 |
3 | import java.io.File
4 |
5 | import akka.actor.ActorSystem
6 | import akka.http.scaladsl.Http
7 | import akka.http.scaladsl.Http.ServerBinding
8 | import akka.http.scaladsl.marshalling.{ToResponseMarshallable, Marshal}
9 | import akka.http.scaladsl.model.Uri.Path
10 | import akka.http.scaladsl.model.{HttpEntity, HttpRequest, MediaTypes, Multipart, _}
11 | import akka.http.scaladsl.server.Directives._
12 | import akka.http.scaladsl.server._
13 | import akka.http.scaladsl.unmarshalling.Unmarshal
14 | import akka.stream.ActorMaterializer
15 | import akka.stream.io.{SynchronousFileSink, SynchronousFileSource}
16 | import akka.stream.scaladsl.{Sink, Source}
17 | import akkahttp.FileDirective.FileInfo
18 | import spray.json.{JsonFormat, RootJsonFormat}
19 | import scala.concurrent.{ExecutionContext, Future}
20 | import spray.json.DefaultJsonProtocol._
21 | import akka.http.scaladsl.marshallers.sprayjson.SprayJsonSupport._
22 | import FileDirective._
23 |
24 | class FileServer(system: ActorSystem, host: String, port: Int) {
25 | import system.dispatcher
26 | implicit val actorSystem = system
27 | implicit val materializer = ActorMaterializer()
28 | import FileServer.fileInfoFormat
29 |
30 | val route: Route = {
31 | path("upload") {
32 | uploadFile { fileMap =>
33 | complete(ToResponseMarshallable(fileMap))
34 | }
35 | } ~
36 | path("download") {
37 | parameters("file") { file =>
38 | downloadFile(file)
39 | }
40 | } ~
41 | pathEndOrSingleSlash {
42 | val entity = HttpEntity(MediaTypes.`text/html`,
43 | """
44 | |
45 | |Please specify a file to upload:
46 | |
53 | """.stripMargin)
54 | complete(entity)
55 | }
56 | }
57 |
58 | private var connection: Future[ServerBinding] = null
59 |
60 | def start: Unit = {
61 | connection = Http().bindAndHandle(Route.handlerFlow(route), host, port = port)
62 | }
63 |
64 | def stop: Future[Unit] = {
65 | connection.flatMap(_.unbind())
66 | }
67 | }
68 |
69 | object FileServer {
70 | implicit def fileInfoFormat: JsonFormat[FileInfo] = jsonFormat3(FileInfo.apply)
71 |
72 | class Client(system: ActorSystem, host: String, port: Int) {
73 | private implicit val actorSystem = system
74 | private implicit val materializer = ActorMaterializer()
75 | private implicit val ec = system.dispatcher
76 |
77 | val server = Uri(s"http://$host:$port")
78 | val httpClient = Http(system).outgoingConnection(server.authority.host.address(), server.authority.port)
79 |
80 | case class FileHandle(private[Client] val info: FileInfo)
81 |
82 | def upload(file: File): Future[FileHandle] = {
83 | val target = server.withPath(Path("/upload"))
84 |
85 | val request = entity(file).map{entity =>
86 | HttpRequest(HttpMethods.POST, uri = target, entity = entity)
87 | }
88 |
89 | val response = Source(request).via(httpClient).runWith(Sink.head)
90 | response.flatMap(some => Unmarshal(some).to[Map[Name, FileInfo]]).map(map => FileHandle(map.head._2))
91 | }
92 |
93 | def download(remoteFile: FileHandle, saveAs: File): Future[Unit] = {
94 | val serverFile = remoteFile.info.targetFile
95 | val downoad = server.withPath(Path("/download")).withQuery("file" -> serverFile)
96 | //download file to local
97 | val response = Source.single(HttpRequest(uri = downoad)).via(httpClient).runWith(Sink.head)
98 | val downloaded = response.flatMap { response =>
99 | response.entity.dataBytes.runWith(SynchronousFileSink(saveAs))
100 | }
101 | downloaded.map(written => Unit)
102 | }
103 |
104 | private def entity(file: File)(implicit ec: ExecutionContext): Future[RequestEntity] = {
105 | val entity = HttpEntity(MediaTypes.`application/octet-stream`, file.length(), SynchronousFileSource(file, chunkSize = 100000))
106 | val body = Source.single(
107 | Multipart.FormData.BodyPart(
108 | "uploadfile",
109 | entity,
110 | Map("filename" -> file.getName)))
111 | val form = Multipart.FormData(body)
112 |
113 | Marshal(form).to[RequestEntity]
114 | }
115 | }
116 | }
--------------------------------------------------------------------------------
/LICENSE:
--------------------------------------------------------------------------------
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