Resetting the UP-TO-DATE property of gradle tasks?

Groovy Gradle

Groovy Problem Overview

Is there a way I can force a gradle task to run again, or reset all tasks back to the not UP-TO-DATE state?

Groovy Solutions

Solution 1 - Groovy

Try to run your build with -C rebuild that rebuilds Gradle's cache.

In newer versions of Gradle, use --rerun-tasks

Solution 2 - Groovy

If you want just a single task to always run, you can set the outputs property inside of the task.

outputs.upToDateWhen { false }

Please be aware that if your task does not have any defined file inputs, Gradle may skip the task, even when using the above code. For example, in a Zip or Copy task there needs to be at least one file provided in the configuration phase of the task definition.

Solution 3 - Groovy

You can use cleanTaskname

Let's say you have

:someproject:sometask1 UP-TO-DATE
:someproject:sometask2 UP-TO-DATE
:someproject:sometask3 UP-TO-DATE

And you want to force let's say sometask2 to run again you can

someproject:cleanSometask2

before you run the task that runs it all.

Apparently in gradle, every task that understands UP-TO-DATE also understand how to clean itself.

Solution 4 - Groovy

I had a tough case where setting outputs.upToDateWhen { false } inside the task or adding the flag --rerun-tasks didn't help since the task's setOnlyIf kept being set to false each time I ran it.

Adding the following to build.gradle forced the execution of myTask:

gradle.taskGraph.whenReady { taskGraph ->
  def tasks = taskGraph.getAllTasks()
  tasks.each {
    def taskName = it.getName()
    if(taskName == 'myTask') {
      println("Found $taskName")

      it.setOnlyIf { true }
      it.outputs.upToDateWhen { false }
    }
  }
}

Solution 5 - Groovy

You can run:

./gradlew cleanBuildCache
./gradlew clean

It will force the gradle to rebuild.

Content Type	Original Author	Original Content on Stackoverflow
Question	Stefan Kendall	View Question on Stackoverflow
Solution 1 - Groovy	Rene Groeschke	View Answer on Stackoverflow
Solution 2 - Groovy	cmcginty	View Answer on Stackoverflow
Solution 3 - Groovy	c_maker	View Answer on Stackoverflow
Solution 4 - Groovy	Matthias Braun	View Answer on Stackoverflow
Solution 5 - Groovy	acmpo6ou	View Answer on Stackoverflow