Skipping tasks

Sometimes, we want tasks to be excluded from a build. In certain circumstances, we just want to skip a task and continue executing other tasks. We can use several methods to skip tasks in Gradle.

Using onlyIf predicates

Every task has a method onlyIf that accepts a closure as an argument. The result of the closure must be true or false. If the task must be skipped, the result of the closure must be false, otherwise the task is executed. The task object is passed as a parameter to the closure. Gradle evaluates the closure just before the task is executed.

The following build file will skip the task longrunning, if the file is executed during weekdays, but will execute it during the weekend:

import static java.util.Calendar.*

task longrunning {
    onlyIf { task ->
        def now = Calendar.instance
        def weekDay = now[DAY_OF_WEEK]
        def weekDayInWeekend = weekDay in [SATURDAY, SUNDAY]
        return weekDayInWeekend
    }
    doLast {
        println "Do long running...