Convert dependency version checker to Kotlin source (#162771)

Converts the `dependency_version_checker.kts` script to a Kotlin source
class. Also adds unit tests that depend heavily on mocking, because from
what I can tell you can't create an instance of a Gradle
`org.gradle.api.Project` for testing (so I can't pass a real `Project`
to `DependencyVersionChecker.checkDependencyVersions()`).

Perhaps functionality for unit testing will come in the future:
https://docs.gradle.org/current/userguide/test_kit.html
> At this time, it is focused on functional testing. That is, testing
build logic by exercising it as part of a programmatically executed
build. Over time, the TestKit will likely expand to facilitate other
kinds of tests.

## Pre-launch Checklist

- [x] I read the [Contributor Guide] and followed the process outlined
there for submitting PRs.
- [x] I read the [Tree Hygiene] wiki page, which explains my
responsibilities.
- [x] I read and followed the [Flutter Style Guide], including [Features
we expect every widget to implement].
- [x] I signed the [CLA].
- [x] I listed at least one issue that this PR fixes in the description
above.
- [x] I updated/added relevant documentation (doc comments with `///`).
- [x] I added new tests to check the change I am making, or this PR is
[test-exempt].
- [x] I followed the [breaking change policy] and added [Data Driven
Fixes] where supported.
- [x] All existing and new tests are passing.

If you need help, consider asking for advice on the #hackers-new channel
on [Discord].

<!-- Links -->
[Contributor Guide]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#overview
[Tree Hygiene]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md
[test-exempt]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#tests
[Flutter Style Guide]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md
[Features we expect every widget to implement]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md#features-we-expect-every-widget-to-implement
[CLA]: https://cla.developers.google.com/
[flutter/tests]: https://github.com/flutter/tests
[breaking change policy]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#handling-breaking-changes
[Discord]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Chat.md
[Data Driven Fixes]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Data-driven-Fixes.md

---------

Co-authored-by: Gray Mackall <mackall@google.com>
Co-authored-by: Reid Baker <hamilton.reid.baker@gmail.com>
This commit is contained in:
Gray Mackall 2025-02-12 11:42:38 -08:00 committed by GitHub
parent fecbcbd367
commit c3fc69d18d
No known key found for this signature in database
GPG Key ID: B5690EEEBB952194
6 changed files with 598 additions and 374 deletions

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@ -34,3 +34,6 @@ e.g `./gradlew test --tests "com.flutter.gradle.BaseApplicationNameHandlerTest.s
Sometimes changing a test name and then running it will cause an IDE error. To get Android Studio back
to a good state on Mac, run `Help > "Repair IDE"`, and then in the popup window `"Rescan project indexes > Everything works now."`
To add a new test, add a class under `src/test/kotlin`, with methods annotated with `@Test`.
These tests will get automatically run on CI by `packages/flutter_tools/test/integration.shard/android_run_flutter_gradle_plugin_tests_test.dart`.

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@ -59,6 +59,8 @@ kotlin {
}
dependencies {
compileOnly("androidx.annotation:annotation-jvm:1.9.1")
implementation("org.jetbrains.kotlin:kotlin-gradle-plugin:1.7.10")
// When bumping, also update:
// * ndkVersion in FlutterExtension in packages/flutter_tools/gradle/src/main/groovy/flutter.groovy
// * AGP version in the buildscript block in packages/flutter_tools/gradle/src/main/kotlin_scripts/dependency_version_checker.gradle.kts
@ -68,4 +70,5 @@ dependencies {
testImplementation(kotlin("test"))
testImplementation("com.android.tools.build:gradle:8.7.3")
testImplementation("org.mockito:mockito-core:4.8.0")
testImplementation("io.mockk:mockk:1.13.16")
}

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@ -6,6 +6,7 @@
import com.android.build.OutputFile
import com.flutter.gradle.BaseApplicationNameHandler
import com.flutter.gradle.Deeplink
import com.flutter.gradle.DependencyVersionChecker
import com.flutter.gradle.IntentFilterCheck
import groovy.json.JsonGenerator
import groovy.xml.QName
@ -300,10 +301,7 @@ class FlutterPlugin implements Plugin<Project> {
final Boolean shouldSkipDependencyChecks = project.hasProperty("skipDependencyChecks") && project.getProperty("skipDependencyChecks")
if (!shouldSkipDependencyChecks) {
try {
final String dependencyCheckerPluginPath = Paths.get(flutterRoot.absolutePath,
"packages", "flutter_tools", "gradle", "src", "main", "kotlin_scripts",
"dependency_version_checker.gradle.kts")
project.apply from: dependencyCheckerPluginPath
DependencyVersionChecker.checkDependencyVersions(project)
} catch (Exception e) {
if (!project.hasProperty("usesUnsupportedDependencyVersions") || !project.usesUnsupportedDependencyVersions) {
// Possible bug in dependency checking code - warn and do not block build.

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@ -0,0 +1,331 @@
package com.flutter.gradle
import androidx.annotation.VisibleForTesting
import com.android.build.api.AndroidPluginVersion
import com.android.build.api.variant.AndroidComponentsExtension
import org.gradle.api.JavaVersion
import org.gradle.api.Project
import org.gradle.kotlin.dsl.extra
import org.jetbrains.kotlin.gradle.plugin.KotlinAndroidPluginWrapper
object DependencyVersionChecker {
@VisibleForTesting internal const val GRADLE_NAME: String = "Gradle"
@VisibleForTesting internal const val JAVA_NAME: String = "Java"
@VisibleForTesting internal const val AGP_NAME: String = "Android Gradle Plugin"
@VisibleForTesting internal const val KGP_NAME: String = "Kotlin"
// String constant that defines the name of the Gradle extra property that we set when
// detecting that the project is using versions outside of Flutter's support range.
// https://docs.gradle.org/current/kotlin-dsl/gradle/org.gradle.api/-project/index.html#-2107180640%2FProperties%2F-1867656071.
@VisibleForTesting internal const val OUT_OF_SUPPORT_RANGE_PROPERTY = "usesUnsupportedDependencyVersions"
// The following messages represent best effort guesses at where a Flutter developer should
// look to upgrade a dependency that is below the corresponding threshold. Developers can
// change some of these locations, so they are not guaranteed to be accurate.
@VisibleForTesting internal fun getPotentialGradleFix(projectDirectory: String): String {
return "Your project's gradle version is typically " +
"defined in the gradle wrapper file. By default, this can be found at " +
"$projectDirectory/gradle/wrapper/gradle-wrapper.properties. \n" +
"For more information, see https://docs.gradle.org/current/userguide/gradle_wrapper.html.\n"
}
// The potential java fix does not make use of the project directory,
// so it left as a constant.
@VisibleForTesting internal const val POTENTIAL_JAVA_FIX: String =
"The Java version used by Flutter can be " +
"set with `flutter config --jdk-dir=<path>`. \nFor more information about how Flutter " +
"chooses which version of Java to use, see the --jdk-dir section of the " +
"output of `flutter config -h`.\n"
@VisibleForTesting internal fun getPotentialAGPFix(projectDirectory: String): String {
return "Your project's AGP version is typically " +
"defined in the plugins block of the `settings.gradle` file " +
"($projectDirectory/settings.gradle), by a plugin with the id of " +
"com.android.application. \nIf you don't see a plugins block, your project " +
"was likely created with an older template version. In this case it is most " +
"likely defined in the top-level build.gradle file " +
"($projectDirectory/build.gradle) by the following line in the dependencies" +
" block of the buildscript: \"classpath 'com.android.tools.build:gradle:<version>'\".\n"
}
@VisibleForTesting internal fun getPotentialKGPFix(projectDirectory: String): String {
return "Your project's KGP version is typically " +
"defined in the plugins block of the `settings.gradle` file " +
"($projectDirectory/settings.gradle), by a plugin with the id of " +
"org.jetbrains.kotlin.android. \nIf you don't see a plugins block, your project " +
"was likely created with an older template version, in which case it is most " +
"likely defined in the top-level build.gradle file " +
"($projectDirectory/build.gradle) by the ext.kotlin_version property.\n"
}
// The following versions define our support policy for Gradle, Java, AGP, and KGP.
// Before updating any "error" version, ensure that you have updated the corresponding
// "warn" version for a full release to provide advanced warning. See
// flutter.dev/go/android-dependency-versions for more.
@VisibleForTesting internal val warnGradleVersion: Version = Version(7, 4, 2)
@VisibleForTesting internal val errorGradleVersion: Version = Version(7, 0, 2)
@VisibleForTesting internal val warnJavaVersion: JavaVersion = JavaVersion.VERSION_11
@VisibleForTesting internal val errorJavaVersion: JavaVersion = JavaVersion.VERSION_1_1
@VisibleForTesting internal val warnAGPVersion: AndroidPluginVersion = AndroidPluginVersion(7, 3, 1)
@VisibleForTesting internal val errorAGPVersion: AndroidPluginVersion = AndroidPluginVersion(7, 0, 0)
@VisibleForTesting internal val warnKGPVersion: Version = Version(1, 8, 10)
@VisibleForTesting internal val errorKGPVersion: Version = Version(1, 7, 0)
/**
* Checks if the project's Android build time dependencies are each within the respective
* version range that we support. When we can't find a version for a given dependency
* we treat it as within the range for the purpose of this check.
*/
@JvmStatic fun checkDependencyVersions(project: Project) {
project.extra.set(OUT_OF_SUPPORT_RANGE_PROPERTY, false)
checkGradleVersion(getGradleVersion(project), project)
checkJavaVersion(getJavaVersion(), project)
val agpVersion: AndroidPluginVersion? = getAGPVersion(project)
if (agpVersion != null) {
checkAGPVersion(agpVersion, project)
} else {
project.logger.error(
"Warning: unable to detect project AGP version. Skipping " +
"version checking. \nThis may be because you have applied AGP after the Flutter Gradle Plugin."
)
}
val kgpVersion: Version? = getKGPVersion(project)
if (kgpVersion != null) {
checkKGPVersion(kgpVersion, project)
}
// KGP is not required, so don't log any warning if we can't find the version.
}
// https://docs.gradle.org/current/kotlin-dsl/gradle/org.gradle.api.invocation/-gradle/index.html#-837060600%2FFunctions%2F-1793262594
@VisibleForTesting internal fun getGradleVersion(project: Project): Version {
val untrimmedGradleVersion: String = project.gradle.gradleVersion
// Trim to handle candidate gradle versions (example 7.6-rc-4). This means we treat all
// candidate versions of gradle as the same as their base version
// (i.e., "7.6"="7.6-rc-4").
return Version.fromString(untrimmedGradleVersion.substringBefore('-'))
}
// https://docs.gradle.org/current/kotlin-dsl/gradle/org.gradle.api/-java-version/index.html#-1790786897%2FFunctions%2F-1793262594
@VisibleForTesting internal fun getJavaVersion(): JavaVersion {
return JavaVersion.current()
}
@VisibleForTesting internal fun getAGPVersion(project: Project): AndroidPluginVersion? {
val androidPluginVersion: AndroidPluginVersion? =
project.extensions.findByType(
AndroidComponentsExtension::class.java
)?.pluginVersion
return androidPluginVersion
}
// TODO(gmackall): AGP has a getKotlinAndroidPluginVersion(), and KGP has a
// getKotlinPluginVersion(). Consider replacing this implementation with one of
// those.
@VisibleForTesting internal fun getKGPVersion(project: Project): Version? {
val kotlinVersionProperty = "kotlin_version"
val firstKotlinVersionFieldName = "pluginVersion"
val secondKotlinVersionFieldName = "kotlinPluginVersion"
// This property corresponds to application of the Kotlin Gradle plugin in the
// top-level build.gradle file.
if (project.hasProperty(kotlinVersionProperty)) {
return Version.fromString(project.properties[kotlinVersionProperty] as String)
}
val kotlinPlugin =
project.plugins
.findPlugin(KotlinAndroidPluginWrapper::class.java)
val versionField =
kotlinPlugin?.javaClass?.kotlin?.members?.first {
it.name == firstKotlinVersionFieldName || it.name == secondKotlinVersionFieldName
}
val versionString = versionField?.call(kotlinPlugin)
return if (versionString == null) {
null
} else {
Version.fromString(versionString as String)
}
}
@VisibleForTesting internal fun getErrorMessage(
dependencyName: String,
versionString: String,
errorVersion: String,
potentialFix: String
): String {
return "Error: Your project's $dependencyName version ($versionString) is lower " +
"than Flutter's minimum supported version of $errorVersion. Please upgrade " +
"your $dependencyName version. \nAlternatively, use the flag " +
"\"--android-skip-build-dependency-validation\" to bypass this check.\n\n" +
"Potential fix: $potentialFix"
}
@VisibleForTesting internal fun getWarnMessage(
dependencyName: String,
versionString: String,
warnVersion: String,
potentialFix: String
): String {
return "Warning: Flutter support for your project's $dependencyName version " +
"($versionString) will soon be dropped. Please upgrade your $dependencyName " +
"version to a version of at least $warnVersion soon." +
"\nAlternatively, use the flag \"--android-skip-build-dependency-validation\"" +
" to bypass this check.\n\nPotential fix: $potentialFix"
}
@VisibleForTesting internal fun checkGradleVersion(
version: Version,
project: Project
) {
if (version < errorGradleVersion) {
val errorMessage: String =
getErrorMessage(
GRADLE_NAME,
version.toString(),
errorGradleVersion.toString(),
getPotentialGradleFix(project.rootDir.path)
)
project.extra.set(OUT_OF_SUPPORT_RANGE_PROPERTY, true)
throw DependencyValidationException(errorMessage)
} else if (version < warnGradleVersion) {
val warnMessage: String =
getWarnMessage(
GRADLE_NAME,
version.toString(),
warnGradleVersion.toString(),
getPotentialGradleFix(project.rootDir.path)
)
project.logger.error(warnMessage)
}
}
@VisibleForTesting internal fun checkJavaVersion(
version: JavaVersion,
project: Project
) {
if (version < errorJavaVersion) {
val errorMessage: String =
getErrorMessage(
JAVA_NAME,
version.toString(),
errorJavaVersion.toString(),
POTENTIAL_JAVA_FIX
)
project.extra.set(OUT_OF_SUPPORT_RANGE_PROPERTY, true)
throw DependencyValidationException(errorMessage)
} else if (version < warnJavaVersion) {
val warnMessage: String =
getWarnMessage(
JAVA_NAME,
version.toString(),
warnJavaVersion.toString(),
POTENTIAL_JAVA_FIX
)
project.logger.error(warnMessage)
}
}
@VisibleForTesting internal fun checkAGPVersion(
androidPluginVersion: AndroidPluginVersion,
project: Project
) {
if (androidPluginVersion < errorAGPVersion) {
val errorMessage: String =
getErrorMessage(
AGP_NAME,
androidPluginVersion.toString(),
errorAGPVersion.toString(),
getPotentialAGPFix(project.rootDir.path)
)
project.extra.set(OUT_OF_SUPPORT_RANGE_PROPERTY, true)
throw DependencyValidationException(errorMessage)
} else if (androidPluginVersion < warnAGPVersion) {
val warnMessage: String =
getWarnMessage(
AGP_NAME,
androidPluginVersion.toString(),
warnAGPVersion.toString(),
getPotentialAGPFix(project.rootDir.path)
)
project.logger.error(warnMessage)
}
}
@VisibleForTesting internal fun checkKGPVersion(
version: Version,
project: Project
) {
if (version < errorKGPVersion) {
val errorMessage: String =
getErrorMessage(
KGP_NAME,
version.toString(),
errorKGPVersion.toString(),
getPotentialKGPFix(project.rootDir.path)
)
project.extra.set(OUT_OF_SUPPORT_RANGE_PROPERTY, true)
throw DependencyValidationException(errorMessage)
} else if (version < warnKGPVersion) {
val warnMessage: String =
getWarnMessage(
KGP_NAME,
version.toString(),
warnKGPVersion.toString(),
getPotentialKGPFix(project.rootDir.path)
)
project.logger.error(warnMessage)
}
}
}
// Helper class to parse the versions that are provided as plain strings (Gradle, Kotlin) and
// perform easy comparisons. All versions will have a major, minor, and patch value. These values
// default to 0 when they are not provided or are otherwise unparseable.
// For example the version strings "8.2", "8.2.2hfd", and "8.2.0" would parse to the same version.
internal class Version(val major: Int, val minor: Int, val patch: Int) : Comparable<Version> {
companion object {
fun fromString(version: String): Version {
val asList: List<String> = version.split(".")
val convertedToNumbers: List<Int> = asList.map { it.toIntOrNull() ?: 0 }
return Version(
major = convertedToNumbers.getOrElse(0) { 0 },
minor = convertedToNumbers.getOrElse(1) { 0 },
patch = convertedToNumbers.getOrElse(2) { 0 }
)
}
}
override fun compareTo(other: Version): Int {
if (major != other.major) {
return major - other.major
}
if (minor != other.minor) {
return minor - other.minor
}
if (patch != other.patch) {
return patch - other.patch
}
return 0
}
override fun toString(): String {
return "$major.$minor.$patch"
}
}
// Custom error for when the dependency_version_checker.kts script finds a dependency out of
// the defined support range.
@VisibleForTesting internal class DependencyValidationException(
message: String? = null,
cause: Throwable? = null
) : Exception(message, cause)

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@ -1,370 +0,0 @@
// Copyright 2014 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import org.gradle.api.JavaVersion
import org.jetbrains.kotlin.gradle.plugin.KotlinAndroidPluginWrapper
// This buildscript block supplies dependencies for this file's own import
// declarations above. It exists solely for compatibility with projects that
// have not migrated to declaratively apply the Flutter Gradle Plugin;
// for those that have, FGP's `build.gradle.kts` takes care of this.
buildscript {
repositories {
google()
mavenCentral()
}
dependencies {
// When bumping, also update:
// * ndkVersion in FlutterExtension in packages/flutter_tools/gradle/src/main/groovy/flutter.groovy
// * AGP version in the buildscript block in packages/flutter_tools/gradle/src/main/groovy/flutter.groovy
// * AGP version constants in packages/flutter_tools/lib/src/android/gradle_utils.dart
// * AGP version in dependencies block in packages/flutter_tools/gradle/build.gradle.kts
classpath("com.android.tools.build:gradle:7.3.0")
classpath("org.jetbrains.kotlin:kotlin-gradle-plugin:1.7.10")
}
}
apply<FlutterDependencyCheckerPlugin>()
class FlutterDependencyCheckerPlugin : Plugin<Project> {
override fun apply(project: Project) {
DependencyVersionChecker.checkDependencyVersions(project)
}
}
class DependencyVersionChecker {
companion object {
private const val GRADLE_NAME: String = "Gradle"
private const val JAVA_NAME: String = "Java"
private const val AGP_NAME: String = "Android Gradle Plugin"
private const val KGP_NAME: String = "Kotlin"
// String constant that defines the name of the Gradle extra property that we set when
// detecting that the project is using versions outside of Flutter's support range.
// https://docs.gradle.org/current/kotlin-dsl/gradle/org.gradle.api/-project/index.html#-2107180640%2FProperties%2F-1867656071.
private const val OUT_OF_SUPPORT_RANGE_PROPERTY = "usesUnsupportedDependencyVersions"
// The following messages represent best effort guesses at where a Flutter developer should
// look to upgrade a dependency that is below the corresponding threshold. Developers can
// change some of these locations, so they are not guaranteed to be accurate.
private fun getPotentialGradleFix(projectDirectory: String): String {
return "Your project's gradle version is typically " +
"defined in the gradle wrapper file. By default, this can be found at " +
"$projectDirectory/gradle/wrapper/gradle-wrapper.properties. \n" +
"For more information, see https://docs.gradle.org/current/userguide/gradle_wrapper.html.\n"
}
// The potential java fix does not make use of the project directory,
// so it left as a constant.
private const val POTENTIAL_JAVA_FIX: String =
"The Java version used by Flutter can be " +
"set with `flutter config --jdk-dir=<path>`. \nFor more information about how Flutter " +
"chooses which version of Java to use, see the --jdk-dir section of the " +
"output of `flutter config -h`.\n"
private fun getPotentialAGPFix(projectDirectory: String): String {
return "Your project's AGP version is typically " +
"defined in the plugins block of the `settings.gradle` file " +
"($projectDirectory/settings.gradle), by a plugin with the id of " +
"com.android.application. \nIf you don't see a plugins block, your project " +
"was likely created with an older template version. In this case it is most " +
"likely defined in the top-level build.gradle file " +
"($projectDirectory/build.gradle) by the following line in the dependencies" +
" block of the buildscript: \"classpath 'com.android.tools.build:gradle:<version>'\".\n"
}
private fun getPotentialKGPFix(projectDirectory: String): String {
return "Your project's KGP version is typically " +
"defined in the plugins block of the `settings.gradle` file " +
"($projectDirectory/settings.gradle), by a plugin with the id of " +
"org.jetbrains.kotlin.android. \nIf you don't see a plugins block, your project " +
"was likely created with an older template version, in which case it is most " +
"likely defined in the top-level build.gradle file " +
"($projectDirectory/build.gradle) by the ext.kotlin_version property.\n"
}
// The following versions define our support policy for Gradle, Java, AGP, and KGP.
// Before updating any "error" version, ensure that you have updated the corresponding
// "warn" version for a full release to provide advanced warning. See
// flutter.dev/go/android-dependency-versions for more.
val warnGradleVersion: Version = Version(7, 4, 2)
val errorGradleVersion: Version = Version(7, 0, 2)
val warnJavaVersion: JavaVersion = JavaVersion.VERSION_11
val errorJavaVersion: JavaVersion = JavaVersion.VERSION_1_1
val warnAGPVersion: Version = Version(7, 3, 1)
val errorAGPVersion: Version = Version(7, 0, 0)
val warnKGPVersion: Version = Version(1, 8, 10)
val errorKGPVersion: Version = Version(1, 7, 0)
/**
* Checks if the project's Android build time dependencies are each within the respective
* version range that we support. When we can't find a version for a given dependency
* we treat it as within the range for the purpose of this check.
*/
fun checkDependencyVersions(project: Project) {
project.extra.set(OUT_OF_SUPPORT_RANGE_PROPERTY, false)
var agpVersion: Version?
var kgpVersion: Version?
checkGradleVersion(getGradleVersion(project), project)
checkJavaVersion(getJavaVersion(), project)
agpVersion = getAGPVersion(project)
if (agpVersion != null) {
checkAGPVersion(agpVersion, project)
} else {
project.logger.error(
"Warning: unable to detect project AGP version. Skipping " +
"version checking. \nThis may be because you have applied AGP after the Flutter Gradle Plugin."
)
}
kgpVersion = getKGPVersion(project)
if (kgpVersion != null) {
checkKGPVersion(kgpVersion, project)
}
// KGP is not required, so don't log any warning if we can't find the version.
}
// https://docs.gradle.org/current/kotlin-dsl/gradle/org.gradle.api.invocation/-gradle/index.html#-837060600%2FFunctions%2F-1793262594
fun getGradleVersion(project: Project): Version {
val untrimmedGradleVersion: String = project.gradle.getGradleVersion()
// Trim to handle candidate gradle versions (example 7.6-rc-4). This means we treat all
// candidate versions of gradle as the same as their base version
// (i.e., "7.6"="7.6-rc-4").
return Version.fromString(untrimmedGradleVersion.substringBefore('-'))
}
// https://docs.gradle.org/current/kotlin-dsl/gradle/org.gradle.api/-java-version/index.html#-1790786897%2FFunctions%2F-1793262594
fun getJavaVersion(): JavaVersion {
return JavaVersion.current()
}
// This approach is taken from AGP's own version checking plugin:
// https://android.googlesource.com/platform/tools/base/+/1839aa23b8dc562005e2f0f0cc8e8b4c5caa37d0/build-system/gradle-core/src/main/java/com/android/build/gradle/internal/utils/agpVersionChecker.kt#58.
fun getAGPVersion(project: Project): Version? {
val agpPluginName: String = "com.android.base"
val agpVersionFieldName: String = "ANDROID_GRADLE_PLUGIN_VERSION"
var agpVersion: Version?
try {
agpVersion =
Version.fromString(
project.plugins.getPlugin(agpPluginName)::class.java.classLoader.loadClass(
com.android.Version::class.java.name
).fields.find { it.name == agpVersionFieldName }!!
.get(null) as String
)
} catch (ignored: ClassNotFoundException) {
// Use deprecated Version class as it exists in older AGP (com.android.Version) does
// not exist in those versions.
@Suppress("deprecation")
agpVersion =
Version.fromString(
project.plugins.getPlugin(agpPluginName)::class.java.classLoader.loadClass(
com.android.builder.model.Version::class.java.name
).fields.find { it.name == agpVersionFieldName }!!
.get(null) as String
)
}
return agpVersion
}
fun getKGPVersion(project: Project): Version? {
val kotlinVersionProperty: String = "kotlin_version"
val firstKotlinVersionFieldName: String = "pluginVersion"
val secondKotlinVersionFieldName: String = "kotlinPluginVersion"
// This property corresponds to application of the Kotlin Gradle plugin in the
// top-level build.gradle file.
if (project.hasProperty(kotlinVersionProperty)) {
return Version.fromString(project.properties.get(kotlinVersionProperty) as String)
}
val kotlinPlugin =
project.getPlugins()
.findPlugin(KotlinAndroidPluginWrapper::class.java)
val versionfield =
kotlinPlugin?.javaClass?.kotlin?.members?.first {
it.name == firstKotlinVersionFieldName || it.name == secondKotlinVersionFieldName
}
val versionString = versionfield?.call(kotlinPlugin)
if (versionString == null) {
return null
} else {
return Version.fromString(versionString as String)
}
}
private fun getErrorMessage(
dependencyName: String,
versionString: String,
errorVersion: String,
potentialFix: String
): String {
return "Error: Your project's $dependencyName version ($versionString) is lower " +
"than Flutter's minimum supported version of $errorVersion. Please upgrade " +
"your $dependencyName version. \nAlternatively, use the flag " +
"\"--android-skip-build-dependency-validation\" to bypass this check.\n\n" +
"Potential fix: $potentialFix"
}
private fun getWarnMessage(
dependencyName: String,
versionString: String,
warnVersion: String,
potentialFix: String
): String {
return "Warning: Flutter support for your project's $dependencyName version " +
"($versionString) will soon be dropped. Please upgrade your $dependencyName " +
"version to a version of at least $warnVersion soon." +
"\nAlternatively, use the flag \"--android-skip-build-dependency-validation\"" +
" to bypass this check.\n\nPotential fix: $potentialFix"
}
fun checkGradleVersion(
version: Version,
project: Project
) {
if (version < errorGradleVersion) {
val errorMessage: String =
getErrorMessage(
GRADLE_NAME,
version.toString(),
errorGradleVersion.toString(),
getPotentialGradleFix(project.getRootDir().getPath())
)
project.extra.set(OUT_OF_SUPPORT_RANGE_PROPERTY, true)
throw DependencyValidationException(errorMessage)
} else if (version < warnGradleVersion) {
val warnMessage: String =
getWarnMessage(
GRADLE_NAME,
version.toString(),
warnGradleVersion.toString(),
getPotentialGradleFix(project.getRootDir().getPath())
)
project.logger.error(warnMessage)
}
}
fun checkJavaVersion(
version: JavaVersion,
project: Project
) {
if (version < errorJavaVersion) {
val errorMessage: String =
getErrorMessage(
JAVA_NAME,
version.toString(),
errorJavaVersion.toString(),
POTENTIAL_JAVA_FIX
)
project.extra.set(OUT_OF_SUPPORT_RANGE_PROPERTY, true)
throw DependencyValidationException(errorMessage)
} else if (version < warnJavaVersion) {
val warnMessage: String =
getWarnMessage(
JAVA_NAME,
version.toString(),
warnJavaVersion.toString(),
POTENTIAL_JAVA_FIX
)
project.logger.error(warnMessage)
}
}
fun checkAGPVersion(
version: Version,
project: Project
) {
if (version < errorAGPVersion) {
val errorMessage: String =
getErrorMessage(
AGP_NAME,
version.toString(),
errorAGPVersion.toString(),
getPotentialAGPFix(project.getRootDir().getPath())
)
project.extra.set(OUT_OF_SUPPORT_RANGE_PROPERTY, true)
throw DependencyValidationException(errorMessage)
} else if (version < warnAGPVersion) {
val warnMessage: String =
getWarnMessage(
AGP_NAME,
version.toString(),
warnAGPVersion.toString(),
getPotentialAGPFix(project.getRootDir().getPath())
)
project.logger.error(warnMessage)
}
}
fun checkKGPVersion(
version: Version,
project: Project
) {
if (version < errorKGPVersion) {
val errorMessage: String =
getErrorMessage(
KGP_NAME,
version.toString(),
errorKGPVersion.toString(),
getPotentialKGPFix(project.getRootDir().getPath())
)
project.extra.set(OUT_OF_SUPPORT_RANGE_PROPERTY, true)
throw DependencyValidationException(errorMessage)
} else if (version < warnKGPVersion) {
val warnMessage: String =
getWarnMessage(
KGP_NAME,
version.toString(),
warnKGPVersion.toString(),
getPotentialKGPFix(project.getRootDir().getPath())
)
project.logger.error(warnMessage)
}
}
}
}
// Helper class to parse the versions that are provided as plain strings (Gradle, Kotlin) and
// perform easy comparisons. All versions will have a major, minor, and patch value. These values
// default to 0 when they are not provided or are otherwise unparseable.
// For example the version strings "8.2", "8.2.2hfd", and "8.2.0" would parse to the same version.
class Version(val major: Int, val minor: Int, val patch: Int) : Comparable<Version> {
companion object {
fun fromString(version: String): Version {
val asList: List<String> = version.split(".")
val convertedToNumbers: List<Int> = asList.map { it.toIntOrNull() ?: 0 }
return Version(
major = convertedToNumbers.getOrElse(0, { 0 }),
minor = convertedToNumbers.getOrElse(1, { 0 }),
patch = convertedToNumbers.getOrElse(2, { 0 })
)
}
}
override fun compareTo(other: Version): Int {
if (major != other.major) {
return major - other.major
}
if (minor != other.minor) {
return minor - other.minor
}
if (patch != other.patch) {
return patch - other.patch
}
return 0
}
override fun toString(): String {
return major.toString() + "." + minor.toString() + "." + patch.toString()
}
}
// Custom error for when the dependency_version_checker.kts script finds a dependency out of
// the defined support range.
class DependencyValidationException(message: String? = null, cause: Throwable? = null) : Exception(message, cause) {
constructor(cause: Throwable) : this(null, cause)
}

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package com.flutter.gradle
import com.android.build.api.AndroidPluginVersion
import com.android.build.api.variant.AndroidComponentsExtension
import com.flutter.gradle.DependencyVersionChecker.AGP_NAME
import com.flutter.gradle.DependencyVersionChecker.GRADLE_NAME
import com.flutter.gradle.DependencyVersionChecker.JAVA_NAME
import com.flutter.gradle.DependencyVersionChecker.KGP_NAME
import com.flutter.gradle.DependencyVersionChecker.OUT_OF_SUPPORT_RANGE_PROPERTY
import com.flutter.gradle.DependencyVersionChecker.POTENTIAL_JAVA_FIX
import com.flutter.gradle.DependencyVersionChecker.errorAGPVersion
import com.flutter.gradle.DependencyVersionChecker.errorGradleVersion
import com.flutter.gradle.DependencyVersionChecker.errorKGPVersion
import com.flutter.gradle.DependencyVersionChecker.getErrorMessage
import com.flutter.gradle.DependencyVersionChecker.getPotentialAGPFix
import com.flutter.gradle.DependencyVersionChecker.getPotentialGradleFix
import com.flutter.gradle.DependencyVersionChecker.getPotentialKGPFix
import com.flutter.gradle.DependencyVersionChecker.getWarnMessage
import com.flutter.gradle.DependencyVersionChecker.warnAGPVersion
import com.flutter.gradle.DependencyVersionChecker.warnGradleVersion
import com.flutter.gradle.DependencyVersionChecker.warnJavaVersion
import com.flutter.gradle.DependencyVersionChecker.warnKGPVersion
import io.mockk.every
import io.mockk.mockk
import io.mockk.mockkStatic
import io.mockk.verify
import org.gradle.api.JavaVersion
import org.gradle.api.Project
import org.gradle.api.logging.Logger
import org.gradle.api.plugins.ExtraPropertiesExtension
import org.gradle.internal.extensions.core.extra
import kotlin.test.Test
import kotlin.test.assertFailsWith
const val FAKE_PROJECT_ROOT_DIR = "/fake/root/dir"
// The following values will need to be modified when the corresponding "warn$DepName" versions
// are updated in DependencyVersionChecker.kt
const val SUPPORTED_GRADLE_VERSION: String = "7.4.2"
val SUPPORTED_JAVA_VERSION: JavaVersion = JavaVersion.VERSION_11
val SUPPORTED_AGP_VERSION: AndroidPluginVersion = AndroidPluginVersion(7, 3, 1)
const val SUPPORTED_KGP_VERSION: String = "1.8.10"
class DependencyVersionCheckerTest {
@Test
fun `AGP version in error range results in DependencyValidationException`() {
val exampleErrorAgpVersion = AndroidPluginVersion(4, 2, 0)
val mockProject = MockProjectFactory.createMockProjectWithSpecifiedDependencyVersions(agpVersion = exampleErrorAgpVersion)
val mockExtraPropertiesExtension = mockProject.extra
every { mockExtraPropertiesExtension.set(any(), any()) } returns Unit
val dependencyValidationException =
assertFailsWith<DependencyValidationException> { DependencyVersionChecker.checkDependencyVersions(mockProject) }
assert(
dependencyValidationException.message ==
getErrorMessage(
AGP_NAME,
exampleErrorAgpVersion.toString(),
errorAGPVersion.toString(),
getPotentialAGPFix(FAKE_PROJECT_ROOT_DIR)
)
)
verify { mockExtraPropertiesExtension.set(OUT_OF_SUPPORT_RANGE_PROPERTY, true) }
}
@Test
fun `AGP version in warn range results in warning logs`() {
val exampleWarnAgpVersion = AndroidPluginVersion(7, 1, 0)
val mockProject = MockProjectFactory.createMockProjectWithSpecifiedDependencyVersions(agpVersion = exampleWarnAgpVersion)
val mockExtraPropertiesExtension = mockProject.extra
every { mockExtraPropertiesExtension.set(OUT_OF_SUPPORT_RANGE_PROPERTY, false) } returns Unit
val mockLogger = mockProject.logger
every { mockLogger.error(any()) } returns Unit
DependencyVersionChecker.checkDependencyVersions(mockProject)
verify {
mockLogger.error(
getWarnMessage(
AGP_NAME,
exampleWarnAgpVersion.toString(),
warnAGPVersion.toString(),
getPotentialAGPFix(FAKE_PROJECT_ROOT_DIR)
)
)
}
verify(exactly = 0) { mockExtraPropertiesExtension.set(OUT_OF_SUPPORT_RANGE_PROPERTY, true) }
}
@Test
fun `KGP version in error range results in DependencyValidationException`() {
val exampleErrorKgpVersion = "1.6.0"
val mockProject = MockProjectFactory.createMockProjectWithSpecifiedDependencyVersions(kgpVersion = exampleErrorKgpVersion)
val mockExtraPropertiesExtension = mockProject.extra
every { mockExtraPropertiesExtension.set(any(), any()) } returns Unit
val dependencyValidationException =
assertFailsWith<DependencyValidationException> { DependencyVersionChecker.checkDependencyVersions(mockProject) }
println(dependencyValidationException.message)
assert(
dependencyValidationException.message ==
getErrorMessage(
KGP_NAME,
exampleErrorKgpVersion,
errorKGPVersion.toString(),
getPotentialKGPFix(FAKE_PROJECT_ROOT_DIR)
)
)
verify { mockExtraPropertiesExtension.set(OUT_OF_SUPPORT_RANGE_PROPERTY, true) }
}
@Test
fun `KGP version in warn range results in warning logs`() {
val exampleWarnKgpVersion = "1.8.0"
val mockProject = MockProjectFactory.createMockProjectWithSpecifiedDependencyVersions(kgpVersion = exampleWarnKgpVersion)
val mockExtraPropertiesExtension = mockProject.extra
every { mockExtraPropertiesExtension.set(OUT_OF_SUPPORT_RANGE_PROPERTY, false) } returns Unit
val mockLogger = mockProject.logger
every { mockLogger.error(any()) } returns Unit
DependencyVersionChecker.checkDependencyVersions(mockProject)
verify {
mockLogger.error(
getWarnMessage(
KGP_NAME,
exampleWarnKgpVersion,
warnKGPVersion.toString(),
getPotentialKGPFix(FAKE_PROJECT_ROOT_DIR)
)
)
}
verify(exactly = 0) { mockExtraPropertiesExtension.set(OUT_OF_SUPPORT_RANGE_PROPERTY, true) }
}
// No test for Java version in error range, as the lowest supported Java version is also the
// lowest possible.
@Test
fun `Java version in warn range results in warning logs`() {
val exampleWarnJavaVersion = JavaVersion.VERSION_1_8
val mockProject = MockProjectFactory.createMockProjectWithSpecifiedDependencyVersions(javaVersion = exampleWarnJavaVersion)
val mockExtraPropertiesExtension = mockProject.extra
every { mockExtraPropertiesExtension.set(OUT_OF_SUPPORT_RANGE_PROPERTY, false) } returns Unit
val mockLogger = mockProject.logger
every { mockLogger.error(any()) } returns Unit
DependencyVersionChecker.checkDependencyVersions(mockProject)
verify {
mockLogger.error(
getWarnMessage(
JAVA_NAME,
exampleWarnJavaVersion.toString(),
warnJavaVersion.toString(),
POTENTIAL_JAVA_FIX
)
)
}
verify(exactly = 0) { mockExtraPropertiesExtension.set(OUT_OF_SUPPORT_RANGE_PROPERTY, true) }
}
@Test
fun `Gradle version in error range results in DependencyValidationException`() {
val exampleErrorGradleVersion = "7.0.0"
val mockProject = MockProjectFactory.createMockProjectWithSpecifiedDependencyVersions(gradleVersion = exampleErrorGradleVersion)
val mockExtraPropertiesExtension = mockProject.extra
every { mockExtraPropertiesExtension.set(any(), any()) } returns Unit
val dependencyValidationException =
assertFailsWith<DependencyValidationException> { DependencyVersionChecker.checkDependencyVersions(mockProject) }
assert(
dependencyValidationException.message ==
getErrorMessage(
GRADLE_NAME,
exampleErrorGradleVersion,
errorGradleVersion.toString(),
getPotentialGradleFix(FAKE_PROJECT_ROOT_DIR)
)
)
verify { mockExtraPropertiesExtension.set(OUT_OF_SUPPORT_RANGE_PROPERTY, true) }
}
@Test
fun `Gradle version in warn range results in warning logs`() {
val exampleWarnGradleVersion = "7.4.0"
val mockProject = MockProjectFactory.createMockProjectWithSpecifiedDependencyVersions(gradleVersion = exampleWarnGradleVersion)
val mockExtraPropertiesExtension = mockProject.extra
every { mockExtraPropertiesExtension.set(OUT_OF_SUPPORT_RANGE_PROPERTY, false) } returns Unit
val mockLogger = mockProject.logger
every { mockLogger.error(any()) } returns Unit
DependencyVersionChecker.checkDependencyVersions(mockProject)
verify {
mockLogger.error(
getWarnMessage(
GRADLE_NAME,
exampleWarnGradleVersion,
warnGradleVersion.toString(),
getPotentialGradleFix(FAKE_PROJECT_ROOT_DIR)
)
)
}
verify(exactly = 0) { mockExtraPropertiesExtension.set(OUT_OF_SUPPORT_RANGE_PROPERTY, true) }
}
}
// There isn't a way to create a real org.gradle.api.Project object for testing unfortunately, so
// these tests rely heavily on mocking.
//
// TODO(gmackall): We should consider adding functional tests built on top of a testing framework
// perhaps like
// https://github.com/autonomousapps/dependency-analysis-gradle-plugin/tree/main/testkit
// as a way to fill this gap in testing (combined with moving functionality to individual tasks
// that can be tested independently).
object MockProjectFactory {
fun createMockProjectWithSpecifiedDependencyVersions(
javaVersion: JavaVersion = SUPPORTED_JAVA_VERSION,
gradleVersion: String = SUPPORTED_GRADLE_VERSION,
agpVersion: AndroidPluginVersion = SUPPORTED_AGP_VERSION,
kgpVersion: String = SUPPORTED_KGP_VERSION
): Project {
// Java
mockkStatic(JavaVersion::class)
every { JavaVersion.current() } returns javaVersion
// Gradle
val mockProject = mockk<Project>()
every { mockProject.gradle.gradleVersion } returns gradleVersion
// AGP
val mockAndroidComponentsExtension = mockk<AndroidComponentsExtension<*, *, *>>()
every { mockProject.extensions.findByType(AndroidComponentsExtension::class.java) } returns mockAndroidComponentsExtension
every { mockAndroidComponentsExtension.pluginVersion } returns agpVersion
// KGP
every { mockProject.hasProperty(eq("kotlin_version")) } returns true
every { mockProject.properties["kotlin_version"] } returns kgpVersion
// Logger
val mockLogger = mockk<Logger>()
every { mockProject.logger } returns mockLogger
// Extra properties extension
val mockExtraPropertiesExtension = mockk<ExtraPropertiesExtension>()
every { mockProject.extra } returns mockExtraPropertiesExtension
// Project path
every { mockProject.rootDir.path } returns FAKE_PROJECT_ROOT_DIR
return mockProject
}
}