Gradle, je t’aime: moi non plus.

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Gradle, je t’aime,   … moi non plus @JeremMartinez - @dwursteisen

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David Wursteisen Jeremie Martinez

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Satisfait de votre banque ?

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Une banque pour entreprise

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Nous construisons notre propre CBS.

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Nous construisons notre propre Core Banking System.

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Data Payments Backend Core

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Data Payments Backend Core Created Deposited Withdraw Withdraw Closed WRITE Event store Reporting Accounting Regulators Data sciences GDPR Users Transfers Customers Collections Cards KYC Limit controller

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Un outil de build est comme une banque. On ne choisit pas le meilleur mais le moins pire. Un outil de build est comme une banque. On ne choisit pas le meilleur mais le moins pire.

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Choix de l’outil de build : 2017 Choix de l’outil de build : 2017

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Bazel Buck

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Construction incrementale DSL en Groovy Dynamisme du produit

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Système à base de tâche.

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Tâche Entrée Sortie

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Assemble

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Jar Assemble

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Compile Jar Assemble

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Compile Jar Assemble

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Compile Jar Assemble Compile [ Up-to-date ] [ Up-to-date ] [ Up-to-date ] Jar Assemble

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On ne construit que le nécessaire. On ne construit que le nécessaire.

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Développeur Mainteneur de scripts Build master 1 2 3

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Développeur Mainteneur de scripts Build master 1

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Support IDE.

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Gradle Wrapper.

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distributionBase=GRADLE_USER_HOME distributionPath=wrapper/dists zipStoreBase=GRADLE_USER_HOME zipStorePath=wrapper/dists distributionUrl=https://services.gradle.org/distributions/gradle-5.3-bin.zip

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distributionBase=GRADLE_USER_HOME distributionPath=wrapper/dists zipStoreBase=GRADLE_USER_HOME zipStorePath=wrapper/dists distributionUrl=https://services.gradle.org/distributions/gradle-5.3-bin.zip

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distributionBase=GRADLE_USER_HOME distributionPath=wrapper/dists zipStoreBase=GRADLE_USER_HOME zipStorePath=wrapper/dists distributionUrl=https://internal/gradle/gradle/gradle/5.3/gradle-5.3-bin.zip

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distributionBase=GRADLE_USER_HOME distributionPath=wrapper/dists zipStoreBase=GRADLE_USER_HOME zipStorePath=wrapper/dists distributionUrl=https://internal/gradle/gradle/gradle/5.3/gradle-5.3-bin.zip distributionSha256Sum=53b71812f18cdb2777e9f1b2a0f2038683907c90bdc406bc6

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distributionhttps://internal/gradle/gradle/gradle/5.3/gradle-5.3-bin.zip distributionSha256Sum=53b71812f18cdb2777e9f1b2a0f2038683907c90bdc406bc6 Ne sont pas des variables d’environment valides !

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4 Go =

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Gestion des dépendances

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src main module kotlin test kotlin resources custom kotlin

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dependencies { }

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dependencies { compile("io.swagger:swagger-annotations:1.5.0") }

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dependencies { compile("io.swagger:swagger-annotations:1.5.0") compile(group = "io.swagger", name = "swagger-annotations", version = "1.5.0") }

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dependencies { compile("io.swagger:swagger-annotations:1.5.0") compile(group = "io.swagger", name = "swagger-annotations", version = "1.5.0") compile(project(":otherProject")) }

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dependencies { compile("io.swagger:swagger-annotations:1.5.0") compile(group = "io.swagger", name = "swagger-annotations", version = "1.5.0") compile(project(":otherProject")) testCompile("io.mockk:mockk:1.9.3") }

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customCompile("org.codehaus.janino:janino:2.5.16") sourceSet configuration

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compile("org.codehaus.janino:janino:2.5.16") compileOnly("org.codehaus.janino:janino:2.5.16") runtime("org.codehaus.janino:janino:2.5.16") annotationProcessor("org.codehaus.janino:janino:2.5.16")

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compile("org.codehaus.janino:janino:2.5.16") compileOnly("org.codehaus.janino:janino:2.5.16") runtime("org.codehaus.janino:janino:2.5.16") annotationProcessor("org.codehaus.janino:janino:2.5.16")

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compile("org.codehaus.janino:janino:2.5.16") compileOnly("org.codehaus.janino:janino:2.5.16") runtime("org.codehaus.janino:janino:2.5.16") annotationProcessor("org.codehaus.janino:janino:2.5.16") runtimeOnly("org.codehaus.janino:janino:2.5.16") api("org.codehaus.janino:janino:2.5.16") implementation("org.codehaus.janino:janino:2.5.16")

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runtimeOnly("org.codehaus.janino:janino:2.5.16") api("org.codehaus.janino:janino:2.5.16") implementation("org.codehaus.janino:janino:2.5.16")

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mailer-service mailer-api amazing-mail com.lib.mailer.api com.lib.mailer.impl MailerService MailerApi webapp fr.amazing.client ClientMail

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mailer-service mailer-api amazing-mail com.lib.mailer.api com.lib.mailer.impl MailerService MailerApi webapp fr.amazing.client ClientMail compilation compilation compilation est visible est visible implementation implementation api

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Repositories.

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repositories { }

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repositories { mavenCentral() }

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repositories { mavenCentral() jcenter() google() }

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repositories { mavenCentral() jcenter() google() maven { url = uri("https://oss.sonatype.org/content/repositories/snapshots/") } }

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repositories { mavenCentral() jcenter() google() maven { url = uri("https://oss.sonatype.org/content/repositories/snapshots/") } maven { url = uri("https://internal") content { includeGroupByRegex("com\\.mycompany.*") } } ivy { url = uri("https://oss.sonatype.org/content/repositories/releases/") } flatDir { dirs("libs") } }

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projectA projectB mavenLocal publishToMavenLocal Dépend de…

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Composite Build.

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projectA projectB compositeBuild includeBuild(…)

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projectA projectB dependencySource gitRepository(https://github.com/…) version = branch/tag

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mailer 1.0.0 Master dev/feature superProject otherProject projectZ

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mailer 1.0.0 Master dev/feature superProject OK otherProject OK projectZ OK

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mailer 1.0.0 master superProject OK OK otherProject OK OK projectZ OK KO Dependency sources

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mailer 1.0.0 master dev/feature superProject OK OK KO otherProject OK OK OK projectZ OK KO OK Dependency sources Dependency sources

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Performance.

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org.gradle.caching=true org.gradle.configureondemand=true org.gradle.jvmargs=-Xmx2048M -Xms2048M org.gradle.parallel=true Réutilisation des résultats de build Execution des tâches en parallèle Utilisation d’un maximum de mémoire Configuration uniquement des tâches nécessaires

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Daemon Gradle 5.1.1 Daemon Gradle 4.10

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Simplicité d’utilisation Performance Fonctionnalités

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Développeur Mainteneur de scripts Build master 2

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Data Payments Backend Reporting Accounting Regulators Data sciences GDPR Users Transfers Customers Collections Cards KYC Limit controller

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Backend GDPR Users Customers KYC Limit controller kotlin nexus release lint Configuration

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Plugin interne.

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apply(plugin = "com.your.company.commons")

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Configurer une seule fois, Exécuter partout.

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buildSrc.

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src main buildSrc kotlin myProject

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open class MyExtension(var yourName: String = "not defined!")

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open class MyExtension(var yourName: String = "not defined!") class MyPlugin : Plugin { override fun apply(project: Project) { } }

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open class MyExtension(var yourName: String = "not defined!") class MyPlugin : Plugin { override fun apply(project: Project) { val exts = project.extensions.create("myPlugin", MyExtension::class) } }

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open class MyExtension(var yourName: String = "not defined!") class MyPlugin : Plugin { override fun apply(project: Project) { val exts = project.extensions.create("myPlugin", MyExtension::class) project.task("myTask") { doLast { println("hello ${exts.yourName}") } } } }

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apply() configure { yourName = "Devoxx France" }

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DSL.

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Groovy DSL.

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sourceSets { } Groovy

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sourceSets { integrationTest { } } DSL Dynamique Groovy

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Type safety IDE Support Navigation Refactoring

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sourceSets { integrationTest { } } Groovy

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sourceSets.create("integrationTest") { … } Kotlin

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idea { project { settings { runConfigurations { "Start Application"(Application) { // … } } } } } Groovy

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idea { project { this as ExtensionAware configure { this as ExtensionAware configure> { // cast to PolymorphicDomainObjectContainer to access the create method used bellow. @Suppress("UnstableApiUsage") this as PolymorphicDomainObjectContainer create("Start Application", Application::class) { // … } } } } } Kotlin

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« Un langage pour les gouverner tous. »

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Migration vers Kotlin DSL.

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object Versions { val assertj = "3.10.0" val junit = "4.12" val mockito = "2.19.1" val mockito_kotlin = "1.6.0" val postgres = "42.2.4" val prometheus = "0.6.0" val springboot = "2.1.3.RELEASE" val swagger = "1.5.20" }

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object TestDeps { val assertj = "org.assertj:assertj-core:${Versions.assertj}" val junit = "junit:junit:${Versions.junit}" val mockito = "org.mockito:mockito-core:${Versions.mockito}" }

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dependencies { testImplementation(TestDeps.assertj) testImplementation(TestDeps.junit) testImplementation(TestDeps.mockito) }

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1. Doublez vos quotes.

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allprojects { group = 'com.margo.backend' version = '1.0' } Groovy

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allprojects { group = 'com.margo.backend' version = '1.0' } Groovy

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allprojects { group = "com.margo.backend" version = "1.0" } Kotlin

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2. Explicitez vos assignations.

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repositories { maven { url 'https://plugins.gradle.org/m2/' } } Groovy

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repositories { maven { url = uri("https://plugins.gradle.org/m2/") } } Kotlin

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dependencies { compile project(":service") } Groovy

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dependencies { compile(project(":service")) } Kotlin

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val commit by extra { Git.commit() } Kotlin

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object Git { fun commit() = Runtime.getRuntime() .exec("git rev-parse --short HEAD") .inputStream.bufferedReader() .readText() } buildSrc

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3. Fichier par fichier.

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web buildSrc src build.gradle settings.gradle build.gradle src build.gradle

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build.gradle.kts web buildSrc src settings.gradle build.gradle src build.gradle

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settings.gradle.kts build.gradle.kts web buildSrc src build.gradle src build.gradle

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build.gradle.kts settings.gradle.kts build.gradle.kts web buildSrc src src build.gradle

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web buildSrc src build.gradle.kts settings.gradle.kts build.gradle.kts src build.gradle.kts

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Quelques diﬀicultés.

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1. Documentation.

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2. Exemples.

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3. Utilisation avancée.

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