Play Scala Akka内で、DIをしたい

Play Framework 2.5.x(Scala)にて、Akkaを利用して、定期的に、ジョブを実行しようとしてます。

定期的に実行されるプログラムに、DIを利用して、Databaseを処理するクラスの設定を行っているのですが、
DIの設定方法が悪いせいか、下記のエラーが発生します。

[info] Compiling 1 Scala source to /Users/you/Documents/Aiko/Source/aiko-batch-play/target/scala-2.11/classes...
[error] application - 

! @74efp4d43 - Internal server error, for (GET) [/] ->
 
play.api.UnexpectedException: Unexpected exception[CreationException: Unable to create injector, see the following errors:

1) Error injecting constructor, java.lang.IllegalArgumentException: no matching constructor found on class models.ClearDBActor for arguments []
  at services.CronJob.<init>(CronJob.scala:22)
  at services.CronJob.class(CronJob.scala:22)
  while locating services.CronJob
  at Module.configure(Module.scala:11) (via modules: com.google.inject.util.Modules$OverrideModule -> Module)
  while locating services.Cron

1 error]
	at play.core.server.DevServerStart$$anonfun$mainDev$1$$anon$1$$anonfun$get$1$$anonfun$apply$1$$anonfun$1.apply(DevServerStart.scala:180)
	at play.core.server.DevServerStart$$anonfun$mainDev$1$$anon$1$$anonfun$get$1$$anonfun$apply$1$$anonfun$1.apply(DevServerStart.scala:131)
	at scala.Option.map(Option.scala:146)
	at play.core.server.DevServerStart$$anonfun$mainDev$1$$anon$1$$anonfun$get$1$$anonfun$apply$1.apply(DevServerStart.scala:131)
	at play.core.server.DevServerStart$$anonfun$mainDev$1$$anon$1$$anonfun$get$1$$anonfun$apply$1.apply(DevServerStart.scala:129)
	at scala.util.Success.flatMap(Try.scala:231)
	at play.core.server.DevServerStart$$anonfun$mainDev$1$$anon$1$$anonfun$get$1.apply(DevServerStart.scala:129)
	at play.core.server.DevServerStart$$anonfun$mainDev$1$$anon$1$$anonfun$get$1.apply(DevServerStart.scala:121)
	at scala.concurrent.impl.Future$PromiseCompletingRunnable.liftedTree1$1(Future.scala:24)
	at scala.concurrent.impl.Future$PromiseCompletingRunnable.run(Future.scala:24)
Caused by: com.google.inject.CreationException: Unable to create injector, see the following errors:

1) Error injecting constructor, java.lang.IllegalArgumentException: no matching constructor found on class models.ClearDBActor for arguments []
  at services.CronJob.<init>(CronJob.scala:22)
  at services.CronJob.class(CronJob.scala:22)
  while locating services.CronJob
  at Module.configure(Module.scala:11) (via modules: com.google.inject.util.Modules$OverrideModule -> Module)
  while locating services.Cron

1 error
	at com.google.inject.internal.Errors.throwCreationExceptionIfErrorsExist(Errors.java:466)
	at com.google.inject.internal.InternalInjectorCreator.injectDynamically(InternalInjectorCreator.java:184)
	at com.google.inject.internal.InternalInjectorCreator.build(InternalInjectorCreator.java:110)
	at com.google.inject.Guice.createInjector(Guice.java:96)
	at com.google.inject.Guice.createInjector(Guice.java:84)
	at play.api.inject.guice.GuiceBuilder.injector(GuiceInjectorBuilder.scala:181)
	at play.api.inject.guice.GuiceApplicationBuilder.build(GuiceApplicationBuilder.scala:123)
	at play.api.inject.guice.GuiceApplicationLoader.load(GuiceApplicationLoader.scala:21)
	at play.core.server.DevServerStart$$anonfun$mainDev$1$$anon$1$$anonfun$get$1$$anonfun$apply$1$$anonfun$1$$anonfun$2.apply(DevServerStart.scala:168)
	at play.core.server.DevServerStart$$anonfun$mainDev$1$$anon$1$$anonfun$get$1$$anonfun$apply$1$$anonfun$1$$anonfun$2.apply(DevServerStart.scala:164)
Caused by: java.lang.IllegalArgumentException: no matching constructor found on class models.ClearDBActor for arguments []
	at akka.util.Reflect$.error$1(Reflect.scala:81)
	at akka.util.Reflect$.findConstructor(Reflect.scala:105)
	at akka.actor.NoArgsReflectConstructor.<init>(IndirectActorProducer.scala:103)
	at akka.actor.IndirectActorProducer$.apply(IndirectActorProducer.scala:60)
	at akka.actor.Props.producer(Props.scala:131)
	at akka.actor.Props.<init>(Props.scala:144)
	at akka.actor.Props$.apply(Props.scala:86)
	at services.CronJob.<init>(CronJob.scala:26)
	at services.CronJob$$FastClassByGuice$$50d5309f.newInstance(<generated>)
	at com.google.inject.internal.cglib.reflect.$FastConstructor.newInstance(FastConstructor.java:40)

Injectionに登録する際に、指定のクラスのコンストラクタがみつからないですよということですが、どのように登録してあげればよいか方法がわからずにおります。

▼Module.scala

scala
1import com.google.inject._
2import models.ClearDBActor
3import play.api.libs.concurrent.AkkaGuiceSupport
4import services._
5
6class Module extends AbstractModule with AkkaGuiceSupport {
7
8  override def configure() = {
9
10    bind(classOf[Cron]).to(classOf[CronJob]).asEagerSingleton()
11
12  }
13
14}
15

▼CronJob.scala

package services

import com.google.inject._
import play.api.libs.concurrent.Akka
import akka.actor.{Actor, ActorRef, ActorSystem, Props}
import com.google.inject.ImplementedBy

import scala.concurrent.ExecutionContext.Implicits.global
import play.api.inject.ApplicationLifecycle

import scala.concurrent.{ExecutionContext, Future}
import com.typesafe.akka.extension.quartz.QuartzSchedulerExtension
import models.ClearDBActor
import models.dao.RustPrevDao
import play.api.db.slick.DatabaseConfigProvider
import play.api.i18n.MessagesApi

@ImplementedBy(classOf[CronJob])
trait Cron

@Singleton
class CronJob @Inject()(protected val dbConfigProvider: DatabaseConfigProvider, val messagesApi: MessagesApi, rustPrevDao: RustPrevDao, system: ActorSystem, lifeCycle: ApplicationLifecycle)(implicit executionContext: ExecutionContext) extends Cron {

  import scala.concurrent.duration._

  val ClearDBActor = system.actorOf(Props(classOf[ClearDBActor]))
  QuartzSchedulerExtension(system).schedule("ClearDB", ClearDBActor, "")
}

こちらのサイトを参考にさせて頂きました。

http://zuqqhi2.com/scala-play-request-driven

大変、お手数をおかけしますが、ご教授宜しくお願い致します。

行動規範の内容に同意します

回答1件

ベストアンサー

自己解決しました。

下記のURLに書いてあったのですが、コンストラクタ付きのものを呼び出す方法が記載してありました。

リンク内容

▼CronJob

scala
1@Singleton
2class CronJob @Inject()(protected val dbConfigProvider: DatabaseConfigProvider, val messagesApi: MessagesApi, rustPrevDao: RustPrevDao, system: ActorSystem, lifeCycle: ApplicationLifecycle)(implicit executionContext: ExecutionContext) extends Cron {
3
4  import scala.concurrent.duration._
5
6  val actor = system.actorOf(ClearDBActor.props(rustPrevDao))
7  QuartzSchedulerExtension(system).schedule("ClearDB", actor, "")
8}

▼ClearDBActor

scala
1object ClearDBActor {
2  def props(rustPrevDao: RustPrevDao) = Props(new ClearDBActor(rustPrevDao))
3}
4
5//class ConfiguredActor @Inject() (configuration: Configuration) extends Actor {
6//  import ConfiguredActor._
7//
8//  val config = configuration.getString("my.config").getOrElse("none")
9
10
11class ClearDBActor @Inject()(rustPrevDao: RustPrevDao) extends Actor {
12
13  def receive = {
14    case msg: String => {
15
16      val shots = rustPrevDao.limitSearch()
17      Logger.info("Old DB records were cleared.")
18    }
19  }
20}