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/*
* Copyright 2019 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package androidx.build.uptodatedness
import androidx.build.VERIFY_UP_TO_DATE
import org.gradle.api.GradleException
import org.gradle.api.Project
import org.gradle.api.Task
import org.gradle.api.provider.Provider
import org.gradle.api.services.BuildService
import org.gradle.api.services.BuildServiceParameters
import org.gradle.build.event.BuildEventsListenerRegistry
import org.gradle.tooling.events.FinishEvent
import org.gradle.tooling.events.OperationCompletionListener
import org.gradle.tooling.events.task.TaskExecutionResult
/**
* Validates that all tasks (except a temporary exception list) are considered up-to-date.
* The expected usage of this is that the user will invoke a build with the
* TaskUpToDateValidator disabled, and then reinvoke the same build with the TaskUpToDateValidator
* enabled. If the second build actually runs any tasks, then some tasks don't have the correct
* inputs/outputs declared and are running more often than necessary.
*/
const val DISALLOW_TASK_EXECUTION_VAR_NAME = "DISALLOW_TASK_EXECUTION"
private const val ENABLE_FLAG_NAME = VERIFY_UP_TO_DATE
// Temporary set of exempt tasks that are known to still be out-of-date after running once
// Entries in this set may be task names (like assembleRelease) or task paths
// (like :core:core:assembleRelease)
// Entries in this set do still get rerun because they might produce files that are needed by
// subsequent tasks
val ALLOW_RERUNNING_TASKS = setOf(
"buildOnServer",
"checkExternalLicenses",
// https://youtrack.jetbrains.com/issue/KT-52632
"commonizeNativeDistribution",
"createDiffArchiveForAll",
"externalNativeBuildDebug",
"externalNativeBuildRelease",
"generateDebugUnitTestConfig",
"generateJsonModelDebug",
"generateJsonModelRelease",
/**
* relocateShadowJar is used to configure the ShadowJar hence it does not have any outputs.
* https://github.com/johnrengelman/shadow/issues/561
*/
"relocateShadowJar",
"testDebugUnitTest",
"verifyDependencyVersions",
"zipConstrainedTestConfigsWithApks",
"zipTestConfigsWithApks",
"zipHtmlResultsOfTestDebugUnitTest",
"zipXmlResultsOfTestDebugUnitTest",
":camera:integration-tests:camera-testapp-core:mergeLibDexDebug",
":camera:integration-tests:camera-testapp-core:packageDebug",
":camera:integration-tests:camera-testapp-extensions:mergeLibDexDebug",
":camera:integration-tests:camera-testapp-extensions:packageDebug",
":camera:integration-tests:camera-testapp-extensions:GenerateTestConfigurationdebugAndroidTest",
":camera:integration-tests:camera-testapp-uiwidgets:mergeLibDexDebug",
":camera:integration-tests:camera-testapp-uiwidgets:packageDebug",
":camera:integration-tests:camera-testapp-core:GenerateTestConfigurationdebug",
":camera:integration-tests:camera-testapp-core:GenerateTestConfigurationdebugAndroidTest",
":camera:integration-tests:camera-testapp-view:GenerateTestConfigurationdebug",
":camera:integration-tests:camera-testapp-view:GenerateTestConfigurationdebugAndroidTest",
":camera:integration-tests:camera-testapp-view:mergeLibDexDebug",
":camera:integration-tests:camera-testapp-view:packageDebug",
"configureCMakeDebug[armeabi-v7a]",
"configureCMakeDebug[arm64-v8a]",
"configureCMakeDebug[x86]",
"configureCMakeDebug[x86_64]",
"buildCMakeDebug[armeabi-v7a]",
"buildCMakeDebug[arm64-v8a]",
"buildCMakeDebug[x86]",
"buildCMakeDebug[x86_64]",
"configureCMakeRelWithDebInfo[armeabi-v7a]",
"configureCMakeRelWithDebInfo[arm64-v8a]",
"configureCMakeRelWithDebInfo[x86]",
"configureCMakeRelWithDebInfo[x86_64]",
"buildCMakeRelWithDebInfo[armeabi-v7a]",
"buildCMakeRelWithDebInfo[arm64-v8a]",
"buildCMakeRelWithDebInfo[x86]",
"buildCMakeRelWithDebInfo[x86_64]",
":appsearch:appsearch-local-storage:buildCMakeDebug[armeabi-v7a][icing]",
":appsearch:appsearch-local-storage:buildCMakeDebug[arm64-v8a][icing]",
":appsearch:appsearch-local-storage:buildCMakeDebug[x86][icing]",
":appsearch:appsearch-local-storage:buildCMakeDebug[x86_64][icing]",
":appsearch:appsearch-local-storage:buildCMakeRelWithDebInfo[armeabi-v7a][icing]",
":appsearch:appsearch-local-storage:buildCMakeRelWithDebInfo[arm64-v8a][icing]",
":appsearch:appsearch-local-storage:buildCMakeRelWithDebInfo[x86][icing]",
":appsearch:appsearch-local-storage:buildCMakeRelWithDebInfo[x86_64][icing]",
":external:libyuv:buildCMakeDebug[armeabi-v7a][yuv]",
":external:libyuv:buildCMakeDebug[arm64-v8a][yuv]",
":external:libyuv:buildCMakeDebug[x86][yuv]",
":external:libyuv:buildCMakeDebug[x86_64][yuv]",
":external:libyuv:buildCMakeRelWithDebInfo[armeabi-v7a][yuv]",
":external:libyuv:buildCMakeRelWithDebInfo[arm64-v8a][yuv]",
":external:libyuv:buildCMakeRelWithDebInfo[x86][yuv]",
":external:libyuv:buildCMakeRelWithDebInfo[x86_64][yuv]",
":hilt:hilt-navigation-compose:kaptGenerateStubsDebugKotlin",
":hilt:hilt-navigation-compose:kaptGenerateStubsReleaseKotlin",
":lint-checks:integration-tests:copyDebugAndroidLintReports",
// https://github.com/gradle/gradle/issues/17262
":doclava:compileJava",
":doclava:processResources",
":doclava:jar",
// https://youtrack.jetbrains.com/issue/KT-49933
"generateProjectStructureMetadata"
)
// Additional tasks that are expected to be temporarily out-of-date after running once
// Tasks in this set we don't even try to rerun, because they're known to be unnecessary
val DONT_TRY_RERUNNING_TASKS = setOf(
":buildSrc-tests:project-subsets:test",
"listTaskOutputs",
"validateProperties",
"tasks",
// More information about the fact that these dokka tasks rerun can be found at b/167569304
"dokkaKotlinDocs",
"zipDokkaDocs",
"dackkaDocs",
// Flakily not up-to-date, b/176120659
"doclavaDocs",
// We know that these tasks are never up to date due to maven-metadata.xml changing
// https://github.com/gradle/gradle/issues/11203
"partiallyDejetifyArchive",
"stripArchiveForPartialDejetification",
"createArchive"
)
val DONT_TRY_RERUNNING_TASK_TYPES = setOf(
"com.android.build.gradle.internal.lint.AndroidLintTextOutputTask_Decorated",
// lint report tasks
"com.android.build.gradle.internal.lint.AndroidLintTask_Decorated",
// lint analysis tasks b/223287425
"com.android.build.gradle.internal.lint.AndroidLintAnalysisTask_Decorated",
// https://github.com/gradle/gradle/issues/11717
"org.gradle.api.publish.tasks.GenerateModuleMetadata_Decorated",
"org.gradle.api.publish.maven.tasks.GenerateMavenPom_Decorated",
// due to GenerateModuleMetadata re-running
"androidx.build.GMavenZipTask_Decorated",
"org.gradle.api.publish.maven.tasks.PublishToMavenRepository_Decorated",
// This task is not cacheable by design due to large number of inputs
"androidx.build.license.CheckExternalDependencyLicensesTask_Decorated",
)
@Suppress("UnstableApiUsage") // usage of BuildService that's incubating
abstract class TaskUpToDateValidator :
BuildService<TaskUpToDateValidator.Parameters>, OperationCompletionListener {
interface Parameters : BuildServiceParameters {
// We check <validate> during task execution rather than during project configuration
// so that any configuration cache created during the first build can be reused during the
// second build, saving build time
var validate: Provider<Boolean>
}
override fun onFinish(event: FinishEvent) {
if (!parameters.validate.get()) {
return
}
val result = event.result
if (result is TaskExecutionResult) {
val name = event.descriptor.name
val executionReasons = result.executionReasons
if (executionReasons.isNullOrEmpty()) {
// empty list means task was actually up-to-date, see docs for
// TaskExecutionResult.executionReasons
// null list means the task already failed, so we'll skip emitting our error
return
}
if (isCausedByAKlibChange(result)) {
// ignore these until this bug in the KMP plugin is fixed.
// see the method for details.
return
}
if (!isAllowedToRerunTask(name)) {
throw GradleException(
"Ran two consecutive builds of the same tasks, and in the " +
"second build, observed:\n" +
"task $name not UP-TO-DATE. It was out-of-date because:\n" +
"${result.executionReasons}"
)
}
}
}
companion object {
// Tells whether to create a TaskUpToDateValidator listener
private fun shouldEnable(project: Project): Boolean {
return project.providers.gradleProperty(ENABLE_FLAG_NAME).isPresent
}
/**
* Currently, klibs are not reproducible, which means any task that depends on them
* might get invalidated at no fault of their own.
*
* https://youtrack.jetbrains.com/issue/KT-52741
*/
private fun isCausedByAKlibChange(result: TaskExecutionResult): Boolean {
// the actual message looks something like:
// Input property 'rootSpec$1$3' file <some-path>.klib has changed
return result.executionReasons.orEmpty().any {
it.contains(".klib has changed")
}
}
private fun isAllowedToRerunTask(taskPath: String): Boolean {
if (ALLOW_RERUNNING_TASKS.contains(taskPath)) {
return true
}
val taskName = taskPath.substringAfterLast(":")
if (ALLOW_RERUNNING_TASKS.contains(taskName)) {
return true
}
if (taskName.startsWith("compile") && taskName.endsWith("KotlinMetadata")) {
// these tasks' up-to-date checks might flake.
// https://youtrack.jetbrains.com/issue/KT-52675
// We are not adding the task type to the DONT_TRY_RERUNNING_TASKS list because it
// is a common compilation task that is shared w/ other kotlin native compilations.
// (e.g. similar to the Exec task in Gradle)
return true
}
return false
}
private fun shouldTryRerunningTask(task: Task): Boolean {
return !(
DONT_TRY_RERUNNING_TASKS.contains(task.name) ||
DONT_TRY_RERUNNING_TASKS.contains(task.path) ||
DONT_TRY_RERUNNING_TASK_TYPES.contains(task::class.qualifiedName)
)
}
fun setup(rootProject: Project, registry: BuildEventsListenerRegistry) {
if (!shouldEnable(rootProject)) {
return
}
val validate = rootProject.providers
.environmentVariable(DISALLOW_TASK_EXECUTION_VAR_NAME).map { true }.orElse(false)
// create listener for validating that any task that reran was expected to rerun
val validatorProvider = rootProject.gradle.sharedServices
.registerIfAbsent(
"TaskUpToDateValidator",
TaskUpToDateValidator::class.java
) { spec -> spec.parameters.validate = validate }
registry.onTaskCompletion(validatorProvider)
// skip rerunning tasks that are known to be unnecessary to rerun
rootProject.allprojects { subproject ->
subproject.tasks.configureEach { task ->
task.onlyIf {
shouldTryRerunningTask(task) || !validate.get()
}
}
}
}
}
}