airframe-di session sample

gistfile1.txt

2020-04-29 21:18:53.719+0900  info [LifeCycleManager] [session:35d176f7] Starting a new lifecycle ...  - (LifeCycleManager.scala:260)
2020-04-29 21:18:53.741+0900  info [LifeCycleManager] [session:35d176f7] ======== STARTED ========  - (LifeCycleManager.scala:264)
2020-04-29 21:18:54.584+0900  info [LifeCycleManager] [session:35d176f7 -> session:18025ced] Starting a new lifecycle ...  - (LifeCycleManager.scala:260)
2020-04-29 21:18:54.585+0900  info [LifeCycleManager] [session:35d176f7 -> session:18025ced] ======== STARTED ========  - (LifeCycleManager.scala:264)
2020-04-29 21:18:54.588+0900  info [Inner] init...  - (Main.scala:36)
2020-04-29 21:18:54.590+0900  info [Inner] [1] exec...  - (Main.scala:44)
2020-04-29 21:18:54.590+0900  info [LifeCycleManager] [session:35d176f7 -> session:18025ced] Stopping the lifecycle ...  - (LifeCycleManager.scala:268)
2020-04-29 21:18:54.593+0900  info [Inner] shutdown...  - (Main.scala:40)
2020-04-29 21:18:54.594+0900  info [LifeCycleManager] [session:35d176f7 -> session:18025ced] The lifecycle has stopped.  - (LifeCycleManager.scala:272)
2020-04-29 21:18:54.594+0900  info [LifeCycleManager] [session:35d176f7 -> session:1af146] Starting a new lifecycle ...  - (LifeCycleManager.scala:260)
2020-04-29 21:18:54.595+0900  info [LifeCycleManager] [session:35d176f7 -> session:1af146] ======== STARTED ========  - (LifeCycleManager.scala:264)
2020-04-29 21:18:54.595+0900  info [Inner] init...  - (Main.scala:36)
2020-04-29 21:18:54.595+0900  info [Inner] [2] exec...  - (Main.scala:44)
2020-04-29 21:18:54.595+0900  info [LifeCycleManager] [session:35d176f7 -> session:1af146] Stopping the lifecycle ...  - (LifeCycleManager.scala:268)
2020-04-29 21:18:54.595+0900  info [Inner] shutdown...  - (Main.scala:40)
2020-04-29 21:18:54.596+0900  info [LifeCycleManager] [session:35d176f7 -> session:1af146] The lifecycle has stopped.  - (LifeCycleManager.scala:272)
2020-04-29 21:18:54.596+0900  info [LifeCycleManager] [session:35d176f7 -> session:4da602fc] Starting a new lifecycle ...  - (LifeCycleManager.scala:260)
2020-04-29 21:18:54.596+0900  info [LifeCycleManager] [session:35d176f7 -> session:4da602fc] ======== STARTED ========  - (LifeCycleManager.scala:264)
2020-04-29 21:18:54.597+0900  info [Inner] init...  - (Main.scala:36)
2020-04-29 21:18:54.597+0900  info [Inner] [3] exec...  - (Main.scala:44)
2020-04-29 21:18:54.597+0900  info [LifeCycleManager] [session:35d176f7 -> session:4da602fc] Stopping the lifecycle ...  - (LifeCycleManager.scala:268)
2020-04-29 21:18:54.597+0900  info [Inner] shutdown...  - (Main.scala:40)
2020-04-29 21:18:54.598+0900  info [LifeCycleManager] [session:35d176f7 -> session:4da602fc] The lifecycle has stopped.  - (LifeCycleManager.scala:272)
2020-04-29 21:18:54.598+0900  info [LifeCycleManager] [session:35d176f7] Stopping the lifecycle ...  - (LifeCycleManager.scala:268)

sample.scala

import wvlet.airframe._

object Main extends App {
  log.init

  newDesign.build[Outer] { outer =>
    outer.run()
  }
}

trait Outer {
  private val session = bind[Session]

  def run(): Unit = {
    val innerDesign = newDesign
      .bind[Inner].toSingleton
      .onInit(_.init())
      .onShutdown(_.shutdown())

    for (i <- 1 to 3) {
      session.withChildSession(innerDesign) { innerSession =>
        val inner = innerSession.build[Inner]
        inner.exec(i)
      }
    }
  }
}

trait Inner {

  private val logger = wvlet.log.Logger.of[Inner]

  def init(): Unit = {
    logger.info("init...")
  }

  def shutdown(): Unit = {
    logger.info("shutdown...")
  }

  def exec(i: Int): Unit = {
    logger.info(s"[$i] exec...")
  }
}