scala - 是否可以从 sbt 重新启动和测试 xsbti.AppMain 派生应用程序？

Question

我正在开发一个带有自定义命令行界面的 sbt 启动应用程序。问题是每次我想测试它时，我都必须删除以前发布的目录，然后重新编译并在本地发布人工制品，然后最后运行应用程序并手动测试它。其中一部分是通过运行外部 shell 脚本来完成的。boot

我怎么能sbt为我做这份工作？我已经为它制作了骨架命令：

  lazy val root = Project(
    id       = "app",
    base     = file("."),
    settings = buildSettings ++ Seq( resolvers := rtResolvers,
      libraryDependencies ++= libs,
      scalacOptions  ++= Seq("-encoding", "UTF-8", "-deprecation", "-unchecked"),
      commands ++= Seq(launchApp))
  )


  val launchApp = Command.command("launch") { state =>
    state.log.info("Re-launching app")
    state
  }

Answer 1

1. 创建启动器配置文件，例如fqb.build.properties在项目的主目录中。

2. 创建启动应用程序的脚本

   #!/usr/bin/env bash
   
   java -jar /path/to/sbt-launch.jar "$@"
   

3. 定义任务和命令：

   lazy val launcherTask = TaskKey[Unit]("launch", "Starts the application from the locally published JAR")
   
   lazy val launchApp: Seq[Setting[_]] = Seq(
       commands += Command.command("publish-launch") { state =>
       state.log.info("Re-launching app")
       val modulesProj = modules.id
       s"$modulesProj/publishLocal" ::
         "publishLocal" ::
         launcherTask.key.label ::
         state
     },
     launcherTask := {
       "launch @fqb.build.properties" !<
     }
   )
   

4. 将其作为设置添加到项目中：

   lazy val root = Project(
       id       = "app",
       base     = file("."),
       settings = buildSettings ++ Seq( resolvers := rtResolvers,
         libraryDependencies ++= libs,
         scalacOptions  ++= Seq("-encoding", "UTF-8", "-deprecation", "-unchecked"),
         launchApp)
   )
   

重新部署时记得删除旧~/.<app_name>目录，以便更改生效。