您可以在命令中访问 SBT SettingKey 吗?

问题描述

我正在编写一个命令并想在 TaskStreams 中使用 Logger 但这不可能，因为您无法访问一个命令的 .value命令中的设置键.有什么办法吗?

I am writing a Command and want to use the Logger in TaskStreams but this is not possible since you cannot access .value of a SettingKey in a Command. Is there some way?

def myCommand = Command.single("myCommand") {
  case (currentState, userInput) =>
    val extracted = Project.extract(currentState)
    val log = streams.value.log   <--- not allowed
    log.info("Some logging")
    currentState
}

推荐答案

streams 用于任务，而不是命令.

streams is intended for tasks, not commands.

所以一种方法是创建一个持有者"TaskKey 并获得一个流，例如 sbt-pgp 创建和使用 pgpCmdContext - 参见 pgp-cmd.

So one way is to create a "holder" TaskKey and get a stream of that, for instance sbt-pgp creates and uses pgpCmdContext - see the definition of pgp-cmd.

另一种方法是使用 sLog，但我不确定这里是否应该使用 sLog:

Another way is using sLog, but I'm not sure if sLog should be used here:

val myCommand = Command.single("myCommand") { case (s, arg) =>
  val extracted = Project extract s
  val log = extracted get sLog
  log info "Some logging"
  currentState
}

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