Question

我正在尝试让Gradle的mustRunAfter和finalizedBy仅用于特定任务。举个例子build.gradle：

task removeTestDatabaseContainer {
  doLast {
    println '\ninside removeTestDatabaseContainer\n'
  }
}

task startTestDatabaseContainer {
  doLast {
    println '\ninside startTestDatabaseContainer\n'
  }
  finalizedBy removeTestDatabaseContainer
}

task flywayMigrate { t->
  doLast {
    println '\n inside flywayMigrate\n'
  }
}

task flywayClean { t->
  doLast {
    println '\n inside flywayClean\n'
  }
}

task testEverything {
    dependsOn startTestDatabaseContainer
    dependsOn flywayMigrate
    dependsOn flywayClean

    flywayMigrate.mustRunAfter startTestDatabaseContainer
    flywayMigrate.finalizedBy flywayClean

    flywayClean.mustRunAfter flywayMigrate
    flywayClean.finalizedBy removeTestDatabaseContainer
}

我对testEverything的工作原理感到满意。我想要从那个任务得到的输出：

➜  gradle testEverything
Parallel execution is an incubating feature.
:startTestDatabaseContainer

inside startTestDatabaseContainer

:flywayMigrate

 inside flywayMigrate

:flywayClean

 inside flywayClean

:removeTestDatabaseContainer

inside removeTestDatabaseContainer

:testEverything

BUILD SUCCESSFUL

Total time: 0.597 secs

然而，当我只运行flywayMigrate时，我遇到了意想不到的问题。这是输出：

➜  gradle flywayMigrate                
Parallel execution is an incubating feature.
:flywayMigrate

 inside flywayMigrate

:flywayClean

 inside flywayClean

:removeTestDatabaseContainer

inside removeTestDatabaseContainer


BUILD SUCCESSFUL

Total time: 0.605 secs

这不是我想要的输出。我希望只有flywayMigrate才能运行。 问题1）如何让testEverything正常工作，同时gradle flywayMigrate仅调用flywayMigrate - 任务？

问题2）
我被告知这与task testEverything {}括号内的所有内容都是配置有关，这一点总是由Gradle处理。因此，在任务中设置的任何mustRunAfter / finalizedBy都将具有“全局效果”。但在这种情况下，为什么gradle flywayMigrate不会调用startTestDatabaseContainer？（因为flywayMigrate.mustRunAfter startTestDatabaseContainer任务中的行testEverything。）

编辑：我被引导到Gradle文档中的Ordering tasks和Finalizer tasks，他们回答问题2：mustRunAfter仅在运行两个任务时生效。另一方面，finalizedBy仅在运行它所设置的任务时生效。这解释了我执行flywayClean时运行removeTestDatabasContainer和gradle flywayMigrate的原因。

我仍然在努力让gradle testEverything像上面一样工作，同时让gradle flywayMigrate只执行flywayMigrate。

Answer 1

感谢freenode上#gradle上eskatos的帮助，我找到了解决方案。这只是删除我有的最终版本。更新了有效的build.gradle：

task removeTestDatabaseContainer {
  doLast {
    println '\ninside removeTestDatabaseContainer\n'
  }
}

task startTestDatabaseContainer {
  doLast {
    println '\ninside startTestDatabaseContainer\n'
  }
  finalizedBy removeTestDatabaseContainer
}

task flywayMigrate { t->
  doLast {
    println '\n inside flywayMigrate\n'
  }
}

task flywayClean { t->
  doLast {
    println '\n inside flywayClean\n'
  }
}

task testEverything {
    dependsOn startTestDatabaseContainer
    dependsOn flywayMigrate
    dependsOn flywayClean

    flywayMigrate.mustRunAfter startTestDatabaseContainer
    //flywayMigrate.finalizedBy flywayClean

    flywayClean.mustRunAfter flywayMigrate
    //flywayClean.finalizedBy removeTestDatabaseContainer
}

Gradle的mustRunAfter / finalized仅适用于特定任务？

1 个答案: