Add shutdown to HttpRestClient trait

build.sbt

@@ -37,6 +37,7 @@ publishTo := {
 // Dependencies
 libraryDependencies += "io.spray" %% "spray-json" % "1.3.2"
 libraryDependencies += "com.typesafe.scala-logging" %% "scala-logging" % "3.5.0"
+libraryDependencies += "com.typesafe" % "config" % "1.3.1"
 
 // Http client adapters. Provided.
 libraryDependencies += "com.typesafe.play" %% "play-ws" % "2.5.14" % "provided"
@@ -53,6 +54,7 @@ libraryDependencies += "com.typesafe.play" %% "play-ws" % "2.5.14" % "test"
 // build settings
 pomIncludeRepository := { _ => false }
 publishMavenStyle := true
+publishArtifact in Test := false
 
 lazy val root = project.in(file("."))
     .settings(releaseProcess := ReleaseProcess.process)

src/main/scala/com/github/jeanadrien/evrythng/scala/httpclient/ApacheHttpClient.scala

@@ -39,6 +39,10 @@ class ApacheHttpClient extends HttpRestClient with LazyLogging {
         apacheResponse.close()
     }
 
+    override def shutDown: Unit = {
+        httpClient.close()
+    }
+
     override def buildRequest(
         url : String,
         headers         : Seq[(String, String)],

src/main/scala/com/github/jeanadrien/evrythng/scala/httpclient/PlayHttpClient.scala

@@ -54,7 +54,7 @@ class PlayHttpClient extends HttpRestClient {
 
     }
 
-    def shutDown() : Unit = {
+    override def shutDown() : Unit = {
         wsClient.close()
         system.terminate().onComplete {
             case Failure(t) =>

src/main/scala/com/github/jeanadrien/evrythng/scala/rest/HttpRestClient.scala

@@ -11,4 +11,6 @@ trait HttpRestClient {
         queryParameters : Seq[(String, String)]
     ) : HttpRestRequest
 
+    def shutDown : Unit
+
 }