gradle - 如何创建和使用Gradle Task Factory函数

Question

如何创建可以创建函数的函数，或者也许我应该要求调用它

// cant use this method see comment tagged ERROR further down
def webRollbackFactory(parentTask) {
  tasks.create(name: "webRollback.${parentTask.name}", type: Copy, dependsOn: [webBackup]) {
    onlyIf { patentTask.state.failure != null }
    from(zipTree("${webPublishPath}/../${getWebBackupName()}")) { include '*' }
    into webPublishPath
    doLast {
      println "\nwebRollback.${parentTask.name}.doLast"
    }
  }
}

// this task which do the same works with out problems
task webRollback_webPublish(type: Copy) {
  onlyIf { webPublish.state.failure != null }
  from(zipTree("${webPublishPath}/../${getWebBackupName()}")) { include '*' }
  into webPublishPath
  doLast {
    println "\nwebRollback.webPublish.doLast"
  }
}

task webPublish(type: com.ullink.Msbuild) {
  dependsOn msbuild, webBackup
  projectFile = "${webPublishProjectDir}/${webPublishProjectFileName}"
  targets = ['Publish']
  parameters = [PublishProfile: webPublishProfile]
  configuration = BUILD_TYPE
  parameters.maxcpucount
  doLast {
    println '\nwebPublish.doLast'
  }

  // ERROR: fails with: Could not find method webRollbackFactoy() for arguments [task ':webAccessTest'] on task ':webAccessTest' of type org.gradle.api.tasks.Exec.
  //finalizedBy webRollbackFactory(webPublish)

  // the version that works
  finalizedBy webRollback_webPublish
}

我在Gradle 4.8上

Answer 1

出现该错误的原因是，正在评估的闭包找不到在主文件中声明的函数。

尝试将您的函数更改为作为variabe引用的闭包，然后它应该起作用。webRollbackFactory = { parentTask ->
tasks.create(name: "webRollback.${parentTask.name}", type: Copy, dependsOn: [webBackup]) {
onlyIf { patentTask.state.failure != null }
from(zipTree("${webPublishPath}/../${getWebBackupName()}")) { include '*' }
into webPublishPath
doLast {
println "\nwebRollback.${parentTask.name}.doLast"
}
}
}