我实现了一个简单的任务,将项目目录从项目目录复制到其他目录:
: lazy val publishFiles = taskKey[Unit]("publishes the files")
lazy val publishFilesTask = publishFiles <<= (projectID, target, streams) map { (id, targetDir, streams) =>
val Sprint = "99"
val DestBaseDir = "/some/folder"
val DestDir = new File(s"$DestBaseDir/Sprint$Sprint/${id.name}")
val log = streams.log
val ScoverageReportDir = "scoverage-report"
val CoberturaFileName = "cobertura.xml"
if (DestDir.exists)
log.error(s"Destination Directory $DestDir exists, exiting ...")
else {
log.info(s"Copying test coverage report to $DestDir ...")
sbt.IO.createDirectory(DestDir)
sbt.IO.copyDirectory(targetDir / ScoverageReportDir, DestDir / ScoverageReportDir, overwrite = false)
sbt.IO.copyFile(targetDir / "coverage-report" / CoberturaFileName, DestDir / CoberturaFileName)
}
}
将任务添加到项目的设置中:
lazy val settings = ... ++ publishFilesTask ++ ..
它有效。
现在,我想更改使用新任务语法的任务(在SBT 0.13.0中引入):
lazy val publishFilesTask = taskKey[Unit]("publishes the files")
publishFilesTask := {
val Sprint = "99"
val DestBaseDir = "/some/folder"
val DestDir = new File(s"$DestBaseDir/Sprint$Sprint/${projectID.value.name}")
val log = streams.value.log
val ScoverageReportDir = "scoverage-report"
val CoberturaFileName = "cobertura.xml"
if (DestDir.exists)
log.error(s"Destination Directory $DestDir exists, exiting ...")
else {
log.info(s"Copying test coverage report to $DestDir ...")
sbt.IO.createDirectory(DestDir)
sbt.IO.copyDirectory(target.value / ScoverageReportDir, DestDir / ScoverageReportDir, overwrite = false)
sbt.IO.copyFile(target.value / "coverage-report" / CoberturaFileName, DestDir / CoberturaFileName)
}
}
到目前为止,一切都很好。但是我没有如何将此任务添加到项目中。如果我喜欢旧版本
lazy val settings = ... ++ publishFilesTask ++ ..
我遇到了这个错误:
[error] found : sbt.TaskKey[Unit]
[error] required: scala.collection.GenTraversableOnce[?]
我查看了文档,但没有找到解决此问题的解决方案。我想这应该很容易... 我正在使用SBT 0.13.0(目前无法升级到较新版本),而我的构建脚本是.scala build build定义。
您所写的是两种不同的情况,如果您在第一种情况下检查实际类型,您会看到:Def.Setting[Task[Unit]]
,在您的第二种情况下:TaskKey[Unit]
,这就是错误的来源。您实际上错过了这部分:
lazy val publishFilesTask = publishFiles
新的0.13语法更改已从定义设置的应用方式变为基于宏的应用。要解决这个问题,就像您在第一个版本中写的那样:
lazy val publishFiles = taskKey[Unit]("publishes the files")
lazy val publishFilesTask = publishFiles := { ... }