almost Making use of a third-party Gradle plugin as a composite plugin

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This submit reveals you wrap a third-party Gradle plugin in your personal plugin, so you’ll be able to work together with it programmatically. We’ll use Gradle composite builds to permit us to construct unexpectedly, lowering the construct, take a look at, and launch cycle.

Have you ever ever used a Gradle plugin and needed to do some tweaking to it, however don’t need the trouble of forking it or deploying one other model to rely upon? Carrying Gradle Composite Builds you’ll be able to create a Gradle plugin that your construct could rely upon. Then, inside that plugin, have it apply the third occasion plugin you wish to use/modify.

Word: A 3rd-party plugin means one developed individually from its repository. It doesn’t essentially imply one written by different individuals. Examples of such plugins might be ktlint, android gradle plugin, affected module detectorsomething you may have written your self or on your group/firm that’s in a gradle root.

What is a composite construction?

A composite construct is solely a construct that features different builds. In some ways, a composite construct is just like a Gradle multi-project construct, besides that as an alternative of together with solely tasksfull builds are included.

Composite builds permit you to:
– mix builds which are sometimes developed independently, for instance when testing a bug repair in a library your app makes use of

– break a big construct of a number of tasks into smaller, remoted components that may be labored on independently or collectively as wanted

For this instance, we’re going to use the Affected Module Detector (AMD) Gradle plugin from mailbox. We’ll create our personal Gradle plugin, embody it as a composite construct, after which have that plugin apply the AMD plugin.

The end result will likely be that our multi-module mission will rely upon the AMD plugin and we can run AMD duties, whereas on the similar time with the ability to increase the habits of the AMD plugin nonetheless we would like as a result of it’s wrapped in our personal plugin.

All of the code for this submit is on the market at the repository here. One thing we’re not going to cowl is apply the AMD plugin in a typical Gradle manner, nonetheless that is lined within the repository and out there. in this branch. If you wish to go on to the composite resolution then it’s out there in this branch.

The very first thing to do whenever you wish to create a composite construct is to create the Gradle folder and construction. Our mission is a brand new primary Android mission from the Android Studio IDE clean template. It has an app module and we’ve got additionally added an android library module (mylibrary) to make it multimodule. Giving it a folder construction like so:

/ 
 construct.gradle
 settings.gradle
 app/
    src/
    construct.gradle
 mylibrary/
    src/
    construct.gradle

We’re going to make our utility depending on a plugin that we created as a composite plugin. To create a composite plugin, begin with a folder that incorporates construct.gradle, settings.gradle, and the opposite common Gradle information. (You need to use the gradle init command to create them, or copy them from a earlier mission). Along with the information within the Gradle root folder we simply mentioned, we added a subproject referred to as ‘plugin’ and this additionally has a construct.gradle file. Supplying you with an up to date folder construction like so:

/ 
 amd-plugin/
    gradle/
    construct.gradle
    gradlew
    settings.gradle
    plugin/
      construct.gradle
      src/
 app/
    src/ 
    construct.gradle
 mylibrary/
    src/
    construct.gradle
 construct.gradle
 settings.gradle

Reminder, you’ll be able to see the settings of this folder construction, here on GitHub.

filling /amd-plugin/settings.gradle It appears like this:

pluginManagement  // Declare the place we wish to discover plugin dependencies
    repositories 
        gradlePluginPortal()
        google()
        mavenCentral()
    

dependencyResolutionManagement  // Declare the place we wish to discover code dependencies
    repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
    repositories 
        google()
        mavenCentral()
    


rootProject.identify = "blundell-amd-plugin" // Identify this mission

embody(":plugin") // Guarantee our module (mission) is used

filling /amd-plugin/construct.gradle It appears like this:

plugins 
    // We wish to use Kotlin
    id("org.jetbrains.kotlin.jvm") model "1.7.21" apply false
    // We wish to have the ability to publish the plugin
    id("com.gradle.plugin-publish") model "1.1.0" apply false

filling /amd-plugin/plugin/construct.gradle It appears like this:

plugins 
    id("java-gradle-plugin")
    id("org.jetbrains.kotlin.jvm")
    id("com.gradle.plugin-publish")


dependencies 
    testImplementation("junit:junit:4.13.2")


java 
    sourceCompatibility = JavaVersion.VERSION_11
    targetCompatibility = JavaVersion.VERSION_11

These 3 information (settings.gradle2x construct.gradle) make up the infrastructure of our new mission. Gradle ought to now have the ability to construct that mission efficiently, nonetheless it would not do something, so it is nonetheless not of a lot use.

Hopefully you’ll be able to discover that all the pieces beneath amd-plugin appears like a standalone Gradle mission, and that is as a result of it’s. 🙂

Now we’re going to create a composite construct of our unique mission with this newly created one. After getting two Gradle tasks, it is a single line to mix them right into a composite construct. Right here we’re composing a plugin, so we embody it in pluginManagementin the event you needed to compose supply code you’d put it with the everyday embody on the finish.

In your root mission settings.gradle:

pluginManagement 
    repositories 
        gradlePluginPortal()
        google()
        mavenCentral()
    
    includeBuild("amd-plugin") // This line permits our plugin mission to be included as a composite construct

dependencyResolutionManagement 
    repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
    repositories 
        google()
        mavenCentral()
    

rootProject.identify = "CompositePlugin"
embody ':app'
embody ':mylibrary'

As soon as you have declared the composite construct like this, it is best to have the ability to ‘sync’ your Android Studio IDE and the amd-plugin it can begin exhibiting up as a multi-module mission that’s included.

The synced mission (Mission View) in Android Studio.

We now have now linked two Gradle tasks collectively to construct them as a composite. The very last thing left is to fill our plugin to do one thing. Reminder; We’re going to wrap the Dropbox Affected Module Detector plugin, so we will enhance its performance.

To create a plugin, we have to declare to Gradle what our plugin is and the place it’s, this helps Gradle to create the container by which our plugin exists. This implies altering our /amd-plugin/plugin/construct.gradle and including the gradlePlugin closing:

gradlePlugin 
    plugins 
        blundAffectedModsPlugin 
            id = "com.blundell.amd.plugin" 
            implementationClass = "com.blundell.amd.BlundellAffectedModulesPlugin" // That is the totally certified identify and path to the plugin ( we are going to create subsequent )
        
    
 

Whereas we’re at this file, let’s add a dependency on the third-party (AMD) plugin to our dependencies to dam:

dependencies 
  implementation(
    "com.dropbox.affectedmoduledetector:affectedmoduledetector:0.2.0"
  )
  testImplementation("junit:junit:4.13.2")

Now that we’ve got a dependency on the AMD plugin, we will entry its public API. We additionally declare our plugin class, create the corresponding supply code for that. Create a brand new file: amd-plugin/plugin/src/predominant/kotlin/com/blundell/amd/BlundellAffectedModulesPlugin.kt

BlundellAffectedModulesPlugin.kt is our plugin, subsequently we lengthen from Gradle org.gradle.api.Plugin:

package deal com.blundell.amd

import com.dropbox.affectedmoduledetector.AffectedModuleConfiguration
import com.dropbox.affectedmoduledetector.AffectedModuleDetectorPlugin
import org.gradle.api.Plugin
import org.gradle.api.Mission

class BlundellAffectedModulesPlugin : Plugin<Mission> 

    override enjoyable apply(mission: Mission) = mission.run 
        mission.plugins.apply(AffectedModuleDetectorPlugin::class.java)
        pluginManager.withPlugin("com.dropbox.affectedmoduledetector") 
            val config = rootProject.extensions.findByType(AffectedModuleConfiguration::class.java)!!
            config.logFolder = "$mission.buildDir/amd-output"
            config.logFilename = "output.log"
            logger.lifecycle("We will now work together with the plugin programmatically (as above).")
        
    

That is what this code does:

  • We apply the AffectedModuleDetectorPlugin in order that anybody who applies this plugin applies the third occasion plugin
  • With the AMD plugin utilized, we get the AMD plugin configuration and configure it to print logs to our /construct folder when working

As soon as the plugin is created, the very last thing we have to do is have our predominant mission apply our BlundellAffectedModulesPlugin in order that it may be used. That is carried out within the root of the principle mission. construct.gradle:

buildscript 
    ext 
        compose_ui_version = '1.3.2'
    

// Prime-level construct file the place you'll be able to add configuration choices widespread to all sub-projects/modules.
plugins 
    id 'com.android.utility' model '7.3.1' apply false
    id 'com.android.library' model '7.3.1' apply false
    id 'org.jetbrains.kotlin.android' model '1.6.10' apply false
    id 'com.blundell.amd.plugin' // This is applicable our composite plugin

And that’s! As soon as you have utilized the plugin, you’ll be able to sync your IDE to select up the newest modifications. Then in the event you run an AMD plugin command like:

./gradlew runAffectedUnitTests -Paffected_module_detector.allow

You will notice your personal plugin working and wrapping the third one.

Congratulations in your composite compilation. You may take this additional and create your own tasks so you’ll be able to have much more management of what runs and when, the being the main pointNow that you’ve got a composite construct, you’ll be able to programmatically work together with different plugins and have all that code in your IDE. Permitting you to debug in a single place issues that had been usually tough to trace throughout a number of tasks, and break your work down into smaller, remoted components.

I hope the article roughly Making use of a third-party Gradle plugin as a composite plugin

provides sharpness to you and is helpful for including collectively to your information

Applying a third-party Gradle plugin as a composite plugin

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