gradle - Gradle Task:打开端口以用作TaskInput

Question

希望根据开放端口获得任务输入和输出。

所以像

ext {
  serverReady checkPortOpen()
}

task MyTask {
  inputs.property ext.serverReady
  outputs.property ext.serverReady
}

任何帮助或指示吗？

Answer 1

正如gradle文档中@Opal所指出的，有一个output.upToDate可以完美地完成这项工作。

在运行完整的测试套件之前，我需要启动一些服务，因此我有一个:

 class BaseServiceTask extends com.github.jengelman.gradle.plugins.processes.tasks.JavaFork {
    def BaseServiceTask() {
      super()
      classpath project.configurations.all
      args ["-user","user","-password","password","-env","mydevenv"]
    }
 }

 task startServer (type:BaseServiceTask) {
    main = "com.nico.StartServer"
    jvmArgs += ["-Xmx8096m","-XX:MaxPermSize=256m"] // give more memory to data server
    outputs.upToDateWhen { checkSocket(servicePort) } 
    doLast {waitForSocket(servicePort)}
 }

和较低的细节...

def checkSocket(portS) {
  try {
    new Socket("localhost", portS.toInteger())
    return true 
  } catch (Exception e) {
    return false
    // throw new GradleScriptException("Required ${portS} is closed", e )
  } 
}

def waitForSocket(portS) {
  while(!checkSocket(portS)) {
    println "Waiting on ${portS}"
    Thread.sleep(5000)
  }
}

最后，在运行相关的gradle任务时，输出应正确地保持最新状态:

 :startServer UP-TO-DATE