├── project
    ├── build.properties
    ├── assembly.sbt
    └── Dependencies.scala
├── README.md
├── src
    ├── test
    │   └── scala
    │   │   └── example
    │   │       └── HelloSpec.scala
    └── main
    │   └── scala
    │       └── bootstrap
    │           └── Main.scala
├── .gitignore
└── Dockerfile


/project/build.properties:
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1 | sbt.version=1.1.1
2 | 


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/project/assembly.sbt:
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1 | addSbtPlugin("com.eed3si9n" % "sbt-assembly" % "0.14.9")


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/project/Dependencies.scala:
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1 | import sbt._
2 | 
3 | object Dependencies {
4 |   lazy val scalaTest = "org.scalatest" %% "scalatest" % "3.0.5"
5 | }
6 | 


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/README.md:
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 1 | # scala-graalvm-lambda
 2 | 
 3 | Sample application of Native Scala with GraalVM.
 4 | 
 5 | 
 6 | ## How to deploy to AWS Lambda
 7 | 
 8 | 1. Run `$ sbt nativeCompile`
 9 | 1. Upload zipped code (target/bundle.zip) into AWS Lambda
10 | 


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/src/test/scala/example/HelloSpec.scala:
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 1 | package example
 2 | 
 3 | import org.scalatest._
 4 | 
 5 | class HelloSpec extends FlatSpec with Matchers {
 6 |   "The Hello object" should "say hello" in {
 7 |     Hello.greeting shouldEqual "hello"
 8 |   }
 9 | }
10 | 


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/.gitignore:
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 1 | *.class
 2 | *.log
 3 | 
 4 | # sbt specific
 5 | .cache/
 6 | .history/
 7 | .lib/
 8 | dist/*
 9 | target/
10 | lib_managed/
11 | src_managed/
12 | project/boot/
13 | project/plugins/project/
14 | 
15 | # Scala-IDE specific
16 | .scala_dependencies
17 | .worksheet
18 | .idea


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/Dockerfile:
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1 | FROM oracle/graalvm-ce:1.0.0-rc15
2 | RUN yum  install -y java-1.8.0-openjdk-headless \
3 |     && update-alternatives --set java $JAVA_HOME/bin/java \
4 |         && mv $JAVA_HOME/jre/lib/security/cacerts $JAVA_HOME/jre/lib/security/cacerts.bak \
5 |     && ln -s /usr/lib/jvm/jre-1.8.0/lib/security/cacerts $JAVA_HOME/jre/lib/security/cacerts
6 | 
7 | CMD tail -f /dev/null


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/src/main/scala/bootstrap/Main.scala:
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 1 | package bootstrap
 2 | 
 3 | import spray.json._
 4 | import scalaj.http._
 5 | 
 6 | object Main {
 7 | 
 8 |   def main(args: Array[String]): Unit = {
 9 |     val runtime = System.getenv("AWS_LAMBDA_RUNTIME_API")
10 | 
11 |     while (true) {
12 |       val HttpResponse(body, _, headers) = Http(s"http://$runtime/2018-06-01/runtime/invocation/next").asString
13 |       val requestId = headers("lambda-runtime-aws-request-id").head
14 | 
15 |       try {
16 |         val name = body.parseJson.asJsObject.getFields("name").headOption match {
17 |           case Some(JsString(value)) => value
18 |           case _ => throw new Exception("unable to parse json")
19 |         }
20 |         val responseJson = JsObject("message" -> JsString(s"hello, $name!")).compactPrint
21 |         Http(s"http://$runtime/2018-06-01/runtime/invocation/$requestId/response").postData(responseJson).asString
22 |       } catch {
23 |         case e: Exception =>
24 |           Http(s"http://$runtime/2018-06-01/runtime/invocation/$requestId/error").postData(e.getMessage).asString
25 |       }
26 |     }
27 |   }
28 | }
29 | 


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