如何创建和使用gradle任务工厂函数

如何创建创建函数的函数，或者我应该请求调用它

// 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
}

---

我使用的是Gradle 4.8

出现该错误的原因是，正在计算的闭包没有找到主文件中声明的函数

尝试将函数更改为闭包作为variabe引用，然后它就可以工作了。

webRollbackFactory={parentTask->
创建（名称：“webRollback.${parentTask.name}”，类型：Copy，dependsOn:[webBackup]）{
onlyIf{patentTask.state.failure！=null}
从（zipTree（${webPublishPath}/./${getWebBackupName（）}”）{include'*}
进入webPublishPath
多拉斯特{
println“\nwebRollback.${parentTask.name}.doLast”
}
}
}