Add a new hello-world endpoint

http/src/main/scala/org/broadinstitute/dsde/workbench/leonardo/http/AppDependenciesBuilder.scala

@@ -95,6 +95,7 @@ class AppDependenciesBuilder(baselineDependenciesBuilder: BaselineDependenciesBu
     as: ActorSystem,
     dbReference: DbReference[IO]
   ): Resource[IO, ServicesDependencies] = {
+    val helloService = new HelloService()
     val statusService = new StatusService(baselineDependencies.samDAO, dbReference)
     val diskV2Service = new DiskV2ServiceInterp[IO](
       ConfigReader.appConfig.persistentDisk,
@@ -125,6 +126,7 @@ class AppDependenciesBuilder(baselineDependenciesBuilder: BaselineDependenciesBu
     Resource.make[IO, ServicesDependencies](
       IO(
         ServicesDependencies(
+          helloService,
           statusService,
           dependenciesRegistry,
           diskV2Service,

http/src/main/scala/org/broadinstitute/dsde/workbench/leonardo/http/Boot.scala

@@ -60,6 +60,7 @@ object Boot extends IOApp {
 
       val httpRoutes = new HttpRoutes(
         servicesDependencies.baselineDependencies.openIDConnectConfiguration,
+        servicesDependencies.helloService,
         servicesDependencies.statusService,
         servicesDependencies.cloudSpecificDependenciesRegistry,
         servicesDependencies.diskV2Service,

http/src/main/scala/org/broadinstitute/dsde/workbench/leonardo/http/CloudDependenciesBuilder.scala

@@ -70,6 +70,7 @@ final case class LeoAppDependencies(
  * Contains all dependencies for the creation of the HTTP routes (services).
  */
 final case class ServicesDependencies(
+  helloService: HelloService,
   statusService: StatusService,
   cloudSpecificDependenciesRegistry: ServicesRegistry,
   diskV2Service: DiskV2Service[IO],

http/src/main/scala/org/broadinstitute/dsde/workbench/leonardo/http/api/HelloRoutes.scala

@@ -0,0 +1,17 @@
+package org.broadinstitute.dsde.workbench.leonardo.http.api
+
+import akka.http.scaladsl.model.StatusCodes
+import akka.http.scaladsl.server
+import akka.http.scaladsl.server.Directives.{complete, get, pathEndOrSingleSlash, pathPrefix}
+import org.broadinstitute.dsde.workbench.leonardo.http.service.HelloService
+
+class HelloRoutes(helloService: HelloService) {
+  val routes: server.Route =
+    pathPrefix("hello") {
+      pathEndOrSingleSlash {
+        get {
+          complete(StatusCodes.OK -> helloService.getResponse)
+        }
+      }
+    }
+}

http/src/main/scala/org/broadinstitute/dsde/workbench/leonardo/http/api/HttpRoutes.scala

@@ -29,6 +29,7 @@ import scala.concurrent.{ExecutionContext, Future}
 
 class HttpRoutes(
   oidcConfig: OpenIDConnectConfiguration,
+  helloService: HelloService,
   statusService: StatusService,
   gcpOnlyServicesRegistry: ServicesRegistry,
   diskV2Service: DiskV2Service[IO],
@@ -41,6 +42,7 @@ class HttpRoutes(
   enableAzureOnlyRoutes: Boolean = false
 )(implicit ec: ExecutionContext, ac: ActorSystem, metrics: OpenTelemetryMetrics[IO], logger: StructuredLogger[IO]) {
 
+  private val helloRoutes = new HelloRoutes(helloService)
   private val statusRoutes = new StatusRoutes(statusService)
   private val corsSupport = new CorsSupport(contentSecurityPolicy, refererConfig)
   private val kubernetesRoutes = new AppRoutes(kubernetesService, userInfoDirectives)
@@ -123,7 +125,8 @@ class HttpRoutes(
                 "swagger/api-docs.yaml"
               ) ~ oidcConfig.oauth2Routes ~ proxyRoutes.get.route ~ statusRoutes.route ~
               pathPrefix("api") {
-                runtimeRoutes.get.routes ~ runtimeV2Routes.routes ~
+                helloRoutes.routes ~
+                  runtimeRoutes.get.routes ~ runtimeV2Routes.routes ~
                   diskRoutes.get.routes ~ kubernetesRoutes.routes ~ appV2Routes.routes ~ diskV2Routes.routes ~ adminRoutes.routes ~
                   resourcesRoutes.get.routes
               }

http/src/main/scala/org/broadinstitute/dsde/workbench/leonardo/http/service/HelloService.scala

@@ -0,0 +1,7 @@
+package org.broadinstitute.dsde.workbench.leonardo.http.service;
+
+import cats.effect.IO
+
+class HelloService {
+  def getResponse: IO[String] = IO.pure("Hello, World!")
+}