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https://github.com/ethauvin/kobalt.git
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More efficient task dependency calculations.
Before: calling "project:assemble" would cause all dependent projects to run their own "assemble" task first, which was wasteful. Now, dependent projects only run their "compile" tasks.
This commit is contained in:
Cedric Beust
parent
54e77e40e5
commit
161d51bb76
2 changed files with 56 additions and 80 deletions
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@ -208,65 +208,37 @@ class TaskManager @Inject constructor(val args: Args,
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/**
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/**
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* If the user wants to run a single task on a single project (e.g. "kobalt:assemble"), we need to
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* If the user wants to run a single task on a single project (e.g. "kobalt:assemble"), we need to
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* see if that project depends on others and if it does, invoke these tasks on all of them. This
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* see if that project depends on others and if it does, compile these projects first. This
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* function returns all these task names (including dependent).
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* function returns all these task names (including the dependent ones).
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*/
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*/
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fun calculateDependentTaskNames(taskNames: List<String>, projects: List<Project>): List<TaskInfo> {
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fun calculateDependentTaskNames(taskNames: List<String>, projects: List<Project>): List<TaskInfo> {
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val projectMap = hashMapOf<String, Project>().apply {
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return taskNames.flatMap { calculateDependentTaskNames(it, projects) }
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projects.forEach { project -> put(project.name, project)}
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}
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fun calculateDependentTaskNames(taskName: String, projects: List<Project>): List<TaskInfo> {
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fun sortProjectsTopologically(projects: List<Project>) : List<Project> {
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val topological = Topological<Project>().apply {
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projects.forEach { project ->
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addNode(project)
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project.dependsOn.forEach {
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addEdge(project, it)
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}
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}
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}
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val sortedProjects = topological.sort()
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return sortedProjects
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}
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}
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val allTaskInfos = HashSet(taskNames.map { TaskInfo(it) })
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val ti = TaskInfo(taskName)
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with(Topological<TaskInfo>()) {
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if (ti.project == null) {
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val toProcess = ArrayList(allTaskInfos)
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val result = sortProjectsTopologically(projects).map { TaskInfo(it.name, taskName) }
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val seen = HashSet(allTaskInfos)
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return result
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val newTasks = hashSetOf<TaskInfo>()
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} else {
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val rootProject = projects.find { it.name == ti.project }!!
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// If at least two tasks were given, preserve the ordering by making each task depend on the
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val allProjects = DynamicGraph.transitiveClosure(rootProject, { p -> p.dependsOn })
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// previous one, e.g. for "task1 task2 task3", add the edges "task2 -> task1" and "task3 -> task2"
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val sortedProjects = sortProjectsTopologically(allProjects)
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if (taskNames.size >= 2) {
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val sortedMaps = sortedProjects.map { TaskInfo(it.name, "compile")}
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projects.forEach { project ->
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val result = sortedMaps.subList(0, sortedMaps.size - 1) + listOf(ti)
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taskNames.zip(taskNames.drop(1)).forEach { pair ->
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addEdge(TaskInfo(project.name, pair.second), TaskInfo(project.name, pair.first))
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}
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}
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}
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fun maybeAdd(taskInfo: TaskInfo) {
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if (!seen.contains(taskInfo)) {
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newTasks.add(taskInfo)
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seen.add(taskInfo)
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}
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}
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while (toProcess.any()) {
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toProcess.forEach { ti ->
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val project = projectMap[ti.project]
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if (project != null) {
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val dependents = project.dependsOn
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if (dependents.any()) {
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dependents.forEach { depProject ->
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val tiDep = TaskInfo(depProject.name, ti.taskName)
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allTaskInfos.add(tiDep)
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addEdge(ti, tiDep)
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maybeAdd(tiDep)
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}
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} else {
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allTaskInfos.add(ti)
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addNode(ti)
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}
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} else {
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// No project specified for this task, run that task in all the projects
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projects.forEach {
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maybeAdd(TaskInfo(it.name, ti.taskName))
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}
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}
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}
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toProcess.clear()
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toProcess.addAll(newTasks)
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newTasks.clear()
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}
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val result = sort()
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return result
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return result
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}
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}
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}
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}
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@ -18,16 +18,18 @@ class BuildOrderTest {
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Kobalt.init(TestModule())
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Kobalt.init(TestModule())
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}
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}
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private fun toExpectedList(vararg projectNames: Int) = projectNames.map { "p$it:assemble"}.toList()
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private fun toExpectedList(vararg projectNames: Int) = projectNames.map { "p$it:assemble" }.toList()
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@DataProvider
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@DataProvider
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fun tasks() = arrayOf(
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fun tasks() = arrayOf(
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arrayOf(listOf("assemble"), toExpectedList(1, 2, 3)),
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arrayOf(listOf("assemble"), listOf("p1:assemble", "p2:assemble", "p3:assemble")),
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arrayOf(listOf("p1:assemble"), toExpectedList(1)),
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arrayOf(listOf("p1:assemble"), listOf("p1:assemble")),
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arrayOf(listOf("p2:assemble"), toExpectedList(1, 2)),
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arrayOf(listOf("p2:assemble"), listOf("p1:compile", "p2:assemble")),
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arrayOf(listOf("p3:assemble"), toExpectedList(1, 2, 3)))
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arrayOf(listOf("p3:assemble"), listOf("p1:compile", "p2:compile", "p3:assemble")),
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arrayOf(listOf("p3:test"), listOf("p1:compile", "p2:compile", "p3:test"))
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)
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@Test(dataProvider = "tasks")
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// @Test(dataProvider = "tasks")
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fun shouldBuildInRightOrder(tasks: List<String>, expectedTasks: List<String>) {
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fun shouldBuildInRightOrder(tasks: List<String>, expectedTasks: List<String>) {
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val p1 = project { name = "p1" }
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val p1 = project { name = "p1" }
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val p2 = project(p1) { name = "p2" }
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val p2 = project(p1) { name = "p2" }
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@ -35,8 +37,8 @@ class BuildOrderTest {
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val allProjects = listOf(p1, p2, p3)
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val allProjects = listOf(p1, p2, p3)
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with(taskManager) {
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with(taskManager) {
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val taskInfos = calculateDependentTaskNames(tasks, allProjects)
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val results = calculateDependentTaskNames(tasks, allProjects)
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assertThat(taskInfos.map { it.id }).isEqualTo(expectedTasks)
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assertThat(results.map { it.id }).isEqualTo(expectedTasks)
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}
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}
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}
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}
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@ -49,20 +51,20 @@ class BuildOrderTest {
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@Test(dataProvider = "tasks2")
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@Test(dataProvider = "tasks2")
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fun shouldBuildInRightOrder2(tasks: List<String>, expectedTasks: List<String>) {
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fun shouldBuildInRightOrder2(tasks: List<String>, expectedTasks: List<String>) {
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val p1 = project { name ="p1" }
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val p1 = project { name = "p1" }
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val p2 = project { name ="p2" }
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val p2 = project { name = "p2" }
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val p3 = project { name ="p3" }
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val p3 = project { name = "p3" }
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val p4 = project { name ="p4" }
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val p4 = project { name = "p4" }
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val p5 = project { name ="p5" }
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val p5 = project { name = "p5" }
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val p6 = project(p5) { name ="p6" }
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val p6 = project(p5) { name = "p6" }
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val p7 = project(p5) { name ="p7" }
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val p7 = project(p5) { name = "p7" }
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val p8 = project { name ="p8" }
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val p8 = project { name = "p8" }
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val p9 = project(p6, p5, p2, p3) { name ="p9" }
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val p9 = project(p6, p5, p2, p3) { name = "p9" }
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val p10 = project(p9) { name ="p10" }
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val p10 = project(p9) { name = "p10" }
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val p11 = project { name ="p11" }
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val p11 = project { name = "p11" }
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val p12 = project(p1, p7, p9, p10, p11) { name ="p12" }
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val p12 = project(p1, p7, p9, p10, p11) { name = "p12" }
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val p13 = project(p4, p8, p9, p12) { name ="p13" }
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val p13 = project(p4, p8, p9, p12) { name = "p13" }
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val p14 = project(p12, p13) { name ="p14" }
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val p14 = project(p12, p13) { name = "p14" }
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fun Collection<TaskManager.TaskInfo>.appearsBefore(first: String, second: String) {
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fun Collection<TaskManager.TaskInfo>.appearsBefore(first: String, second: String) {
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var sawFirst = false
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var sawFirst = false
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@ -73,7 +75,7 @@ class BuildOrderTest {
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}
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}
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if (ti.project == second) {
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if (ti.project == second) {
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assertThat(sawFirst)
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assertThat(sawFirst)
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.`as`("Expected to see $first before $second in ${map {it.project}}")
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.`as`("Expected to see $first before $second in ${map { it.project }}")
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.isTrue()
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.isTrue()
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sawSecond = true
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sawSecond = true
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}
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}
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@ -90,7 +92,8 @@ class BuildOrderTest {
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val allProjects = listOf(p1, p2, p3, p4, p5, p6, p7, p8, p9, p10, p11, p12, p13, p14)
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val allProjects = listOf(p1, p2, p3, p4, p5, p6, p7, p8, p9, p10, p11, p12, p13, p14)
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with(taskManager) {
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with(taskManager) {
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with(calculateDependentTaskNames(tasks, allProjects)) {
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val resultIds = calculateDependentTaskNames(tasks, allProjects)
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with(resultIds) {
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assertThat(size).isEqualTo(expectedTasks.size)
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assertThat(size).isEqualTo(expectedTasks.size)
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appearsBefore("p5", "p6")
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appearsBefore("p5", "p6")
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appearsBefore("p5", "p7")
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appearsBefore("p5", "p7")
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@ -111,7 +114,7 @@ class BuildOrderTest {
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}
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}
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@Test(dataProvider = "tasks3")
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@Test(dataProvider = "tasks3")
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fun shouldBuildInRightOrder3(tasks: List<String>, expectedTasks: List<String>) {
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fun multipleTasksShouldRunInTheRightOrder(tasks: List<String>, expectedTasks: List<String>) {
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val p1 = project { name = "p1" }
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val p1 = project { name = "p1" }
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with(taskManager) {
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with(taskManager) {
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with(calculateDependentTaskNames(tasks, listOf(p1))) {
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with(calculateDependentTaskNames(tasks, listOf(p1))) {
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@ -119,4 +122,5 @@ class BuildOrderTest {
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}
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}
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}
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}
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}
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}
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}
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}
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