将多个sbt任务合并为一个

Question

sbt ";set target := file(\"$PWD/package/deb-upstart\"); set serverLoading in Debian := com.typesafe.sbt.packager.archetypes.ServerLoader.Upstart; debian:packageBin; set target := file(\"$PWD/package/deb-systemv\"); set serverLoading in Debian := com.typesafe.sbt.packager.archtypes.ServerLoader.SystemV; debian:packageBin; set target := file(\"$PWD/package/rpm-systemd\"); rpm:packageBin"

 lazy val packageAll = taskKey[Unit]("Creates deb-upstart, deb-systenv and rpm-systemd packages")

packageAll := {
  target := baseDirectory.value / "package" / "deb-upstart"

  serverLoading in Debian := com.typesafe.sbt.packager.archetypes.ServerLoader.Upstart

  (packageBin in Debian).value

  target := baseDirectory.value / "package" / "deb-systemv"

  serverLoading in Debian := com.typesafe.sbt.packager.archetypes.ServerLoader.SystemV

  (packageBin in Debian).value

  target := baseDirectory.value / "package" / "rpm-systemd"

  (packageBin in Rpm).value

}

但问题是.value导致任务在我的任务运行之前就被评估，因此它们无法获得新的目标设置（如另一个问题中所述：如何从我的SBT任务中调用另一个任务？）

Answer 1

所以，我想出了这一点：）正如你已经提到的，将多个任务组合在一个任务中，其中一些任务依赖于相同的设置，并不像预期的那样成功。

相反，我们执行以下操作

1. 为我们的每一个自定义步骤创建一个任务，例如为新贵打包debian
2. 定义按顺序执行这些命令的别名

lazy val packageDebianUpstart = taskKey[File]("creates deb-upstart package")
lazy val packageDebianSystemV = taskKey[File]("creates deb-systenv package")
lazy val packageRpmSystemD = taskKey[File]("creates rpm-systenv package")

// don't forget this
import com.typesafe.sbt.packager.archetypes._

packageDebianUpstart := {
  // define where you want to put your stuff
  val output = baseDirectory.value / "package" / "deb-upstart"

  // run task
  val debianFile = (packageBin in Debian).value

  // place it where  you want
  IO.move(debianFile, output)
  output
}

现在将这些任务组合成一个单独的别名

addCommandAlias("packageAll", "; clean " + 
                          "; set serverLoading in Debian := com.typesafe.sbt.packager.archetypes.ServerLoader.SystemV" +
                          "; packageDebianSystemV " +
                          "; clean " + 
                          "; set serverLoading in Debian := com.typesafe.sbt.packager.archetypes.ServerLoader.Upstart" +
                          "; packageDebianUpstart " + 
                          "; packageRpmSystemD")

您可以在这里查看完整的代码。

在别名内部设置SystemLoader似乎是解决这一问题的正确方法。不幸的是，对于相同的输出格式，在每个构建之间必须进行清理。