Added default endpoint based on http4s

.gitignore

@@ -12,6 +12,10 @@ src_managed/
 project/boot/
 project/plugins/project/
 
+# ensime
+.ensime
+.ensime_cache/
+
 # Scala-IDE specific
 .scala_dependencies
 .worksheet

.travis.yml

@@ -0,0 +1,17 @@
+language: scala
+sudo: required
+scala:
+  - 2.11.7
+jdk:
+  - oraclejdk8
+cache:
+  directories:
+    - $HOME/.coursier/cache	
+    - $HOME/.ivy2/cache
+    - $HOME/.sbt/boot/
+env:
+  global:
+    JAVA_OPTS=-Xmx2g
+    SBT_OPTS="-XX:+UseConcMarkSweepGC -XX:MaxPermSize=512m"
+script:
+  - sbt test

build.sbt

@@ -0,0 +1,13 @@
+scalaVersion := "2.11.8" 
+
+lazy val http4sVersion = "0.15.0-SNAPSHOT"
+
+resolvers += Resolver.sonatypeRepo("snapshots")
+
+libraryDependencies ++= Seq(
+  "org.http4s" %% "http4s-dsl" % http4sVersion,
+  "org.http4s" %% "http4s-blaze-server" % http4sVersion,
+  "org.http4s" %% "http4s-blaze-client" % http4sVersion,
+  "org.log4s" %% "log4s" % "1.3.0",
+  "org.slf4j" % "slf4j-simple" % "1.7.21"
+)

src/main/scala/services.scala

@@ -0,0 +1,42 @@
+package org.scalaexercises.evaluator
+
+import org.http4s._, org.http4s.dsl._, org.http4s.server._
+import org.http4s.server.blaze._
+import org.log4s.getLogger
+
+import scalaz.concurrent.Task
+
+object services {
+
+  private val logger = getLogger
+
+  val service = HttpService {
+    case GET -> Root / "eval" =>
+      Ok(s"Hello, evaluator!.")
+  }
+
+}
+
+object EvaluatorServer extends App {
+
+  import services._
+
+  private[this] val logger = getLogger
+
+  val ip = Option(System.getenv("EVALUATOR_SERVER_IP")).getOrElse("0.0.0.0")
+
+  val port = (Option(System.getenv("EVALUATOR_SERVER_PORT")) orElse
+              Option(System.getenv("HTTP_PORT")))
+          .map(_.toInt)
+          .getOrElse(8080)
+
+  logger.info(s"Initializing Evaluator at $ip:$port")
+
+  BlazeBuilder
+    .bindHttp(port, ip)
+    .mountService(service)
+    .start
+    .run
+    .awaitShutdown()
+
+}