I'm setting up a new multi-module project (sbt/scala/play/IntejjiJ) and I would like to have two things:
- A multi-module project with one build.sbt file with this layout
project
|_Dependencies.scala
|_plugin.sbt
modules
|_adapters
|_api (Play REST API)
|_app
|_conf
|_infrastructure (bare bone scala)
|-src/main/scala
|_application (bare bone scala)
|_src/main/scala
|_domain (bare bone scala)
|_src/main/scala
|_query (bare bone scala)
|_src/main/scala
build.sbt
- I would like to be able to use IntelliJ Play2 plugin (Run/Debug Configuration)
So far, I'm getting the following error when I run the application using Play2 Run/Debug Configuration settings:
[error] java.lang.RuntimeException: No main class detected.
[error] at scala.sys.package$.error(package.scala:26)
[error] (Compile / bgRun) No main class detected.
[error] Total time: 2 s, completed Jun 1, 2019 11:21:31 PM
Here is what I have so far:
build.sbt
import Dependencies._
lazy val commonSettings = Seq(
organization := "com.borkke.rally",
version := "0.1.0-SNAPSHOT",
scalaVersion := "2.12.8",
scalacOptions := Seq(
"-deprecation",
"-feature"
),
libraryDependencies ++= CommonDependencies
)
//PROJECTS
lazy val rally = project
.in(file("."))
.aggregate(domain,application,query,api,infrastructure)
.settings(
name := "rally",
commonSettings,
publishArtifact := false
)
lazy val api = project
.in(file("modules/adapter/api"))
.enablePlugins(PlayScala)
.dependsOn(domain,application,query,infrastructure)
.settings(
name := "api",
commonSettings,
libraryDependencies ++= ApiDependencies
)
lazy val domain = project
.in(file("modules/domain"))
.settings(
name := "domain",
commonSettings
)
lazy val application = project
.in(file("modules/application"))
.dependsOn(domain)
.settings(
name := "application",
commonSettings
)
lazy val query = project
.in(file("modules/query"))
.settings(
name := "query",
commonSettings
)
lazy val infrastructure = project
.in(file("modules/adapter/infrastructure"))
.dependsOn(domain)
.settings(
name := "infrastructure",
commonSettings,
libraryDependencies ++= InfrastructureDependencies
)
Dependencies.scala
import sbt._
import play.sbt.PlayImport._
object Dependencies {
private val scalatest_version = "3.0.5"
private val v2Db_version = "1.4.198"
private val logback_version = "5.3"
private val play_version = "2.7.2"
private val cassandra_driver_version = "3.7.1"
private val postgresql_driver_version = "42.2.5"
private val kafka_client_version = "2.2.0"
private val scalatest = "org.scalatest" %% "scalatest" % scalatest_version
private val scalatic = "org.scalactic" %% "scalactic" % scalatest_version
private val h2Db = "com.h2database" %% "h2" % v2Db_version
private val logback = "net.logstash.logback" % "logstash-logback-encoder" % logback_version
private val play = "com.typesafe.play" %% "play" % play_version
private val cassandra_driver = "com.datastax.cassandra" % "cassandra-driver-extras" % cassandra_driver_version
private val postgresql_driver = "org.postgresql" % "postgresql" % postgresql_driver_version
private val kafka_client = "org.apache.kafka" %% "kafka" % kafka_client_version
lazy val CommonDependencies = Seq(scalatic, scalatest % "test", logback, guice)
lazy val InfrastructureDependencies = Seq(cassandra_driver, postgresql_driver, kafka_client)
lazy val ApiDependencies = Seq(play)
}
plugin.sbt
logLevel := Level.Warn
//wrapper around play console.
addSbtPlugin("com.typesafe.play" % "sbt-plugin" % "2.7.2")
//dependency resolver. parallel downloads
addSbtPlugin("io.get-coursier" % "sbt-coursier" % "1.1.0-M11")
//shows available updates. dependencyUpdates || dependencyUpdatesReport
addSbtPlugin("com.timushev.sbt" % "sbt-updates" % "0.4.0")
//create one jar for application.
addSbtPlugin("com.eed3si9n" % "sbt-assembly" % "0.14.5")
//linter
addSbtPlugin("org.wartremover" % "sbt-wartremover" % "2.2.1")
application.conf
wchis is probable one of many difficulties about Play Framework plugin configuration: playframework.com/documentation/2.1.x/SBTSubProjects - try runningsbt "show resourceDirectory"
to check what are the resource directories in your project. – Mateusz Kubuszok.enablePlugins(PlayScala)
to the api module... and after that when I run the app using cli commandsbt api/run
it works fine. But using scala plugin, it does not. It throws this error: ``` [error] java.lang.RuntimeException: No main class detected. [error] at scala.sys.package$.error(package.scala:26) [error] (Compile / bgRun) No main class detected. [error] Total time: 1 s, completed Jun 1, 2019 10:44:14 PM Process finished with exit code 1 ``` – Aleksandar Borkovac