Is there a way to list task dependencies in Gradle?

Question

./gradle tasks lists \"some\" of the tasks. Looking at http://gradle.org/docs/current/userguide/java_plugin.html there are hidden ones not listed. Also, othe

Answer 1

You can stick this into your build.gradle:

gradle.taskGraph.whenReady {taskGraph ->
    println "Found task graph: " + taskGraph
    println "Found " + taskGraph.allTasks.size() + " tasks."
    taskGraph.allTasks.forEach { task ->
        println task
        task.dependsOn.forEach { dep ->
            println "  - " + dep
        }
    }
}

or this into your build.gradle.kts:

gradle.taskGraph.whenReady(closureOf {
    println("Found task graph: $this")
    println("Found " + allTasks.size + " tasks.")
    allTasks.forEach { task ->
        println(task)
        task.dependsOn.forEach { dep ->
            println("  - $dep")
        }
    }
})

Then run your task with gradle:

./gradlew build

And you should see this:

Found task graph: org.gradle.execution.taskgraph.DefaultTaskGraphExecuter@36eb780c
Found 19 tasks.
task ':compileJava'
  - task 'compileJava' input files
task ':compileScala'
  - task 'compileScala' input files
  - compileJava
task ':processResources'
  - task 'processResources' input files
task ':classes'
  - org.gradle.api.internal.tasks.DefaultTaskDependency@287a7782
  - task 'classes' input files
  - compileJava
  - dirs
  - compileScala
  - processResources
task ':jar'
  - task 'jar' input files
task ':assemble'
  - task 'assemble' input files
  - org.gradle.api.internal.artifacts.DefaultPublishArtifactSet$ArtifactsTaskDependency@5bad9616
task ':compileTestJava'
    - task 'compileTestJava' input files
task ':compileTestScala'
  - task 'compileTestScala' input files
  - compileTestJava
task ':processTestResources'
  - task 'processTestResources' input files
task ':testClasses'
  - processTestResources
  - task 'testClasses' input files
  - compileTestScala
  - org.gradle.api.internal.tasks.DefaultTaskDependency@42c1fa08
  - compileTestJava
  - dirs
task ':compileIntegrationTestJava'
  - task 'compileIntegrationTestJava' input files
task ':compileIntegrationTestScala'
  - task 'compileIntegrationTestScala' input files
  - compileIntegrationTestJava
task ':processIntegrationTestResources'
  - task 'processIntegrationTestResources' input files
task ':integrationTestClasses'
  - processIntegrationTestResources
  - compileIntegrationTestJava
  - org.gradle.api.internal.tasks.DefaultTaskDependency@7c8aa0fe
  - compileIntegrationTestScala
  - dirs
  - task 'integrationTestClasses' input files
task ':composeUp'
  - task 'composeUp' input files
task ':integrationTest'
  - task ':composeUp'
  - task 'integrationTest' input files
task ':test'
  - task 'test' input files
task ':check'
  - task 'check' input files
  - task ':test'
  - task ':integrationTest'
task ':build'
  - task 'build' input files
  - check
  - assemble