Gradle, je t’aime: moi non plus.

Un outil de build de qualité est essentiel dans un projet IT. On attend de lui qu’il soit rapide, facile à configurer et qu’il se fasse oublier le reste du temps. Même si l’écosystème Java utilise encore fortement Maven, Gradle est une alternative à considérer, particulièrement avec les dernières fonctionnalités apportées.

Pourquoi avoir choisi Gradle ? Quelles sont les fonctionnalités de l’outil qui nous satisfont le plus ? Quelles sont nos bonnes pratiques ? Quelles sont les problèmes que nous avons rencontrés ? Comment nos builds sont maintenant organisés avec cet outil ?

Cette session répondra à ces questions et vous aidera à choisir votre prochain outil de build.

Devoxx France 2019 - 19 Avril 2019

Transcript

1. Gradle, je t’aime, 
 … moi non plus @JeremMartinez - @dwursteisen
3. David Wursteisen Jeremie Martinez
4. Satisfait de votre banque ?
5. Une banque pour entreprise
6. Nous construisons notre propre CBS.
7. Nous construisons notre propre Core Banking System.
8. Data Payments Backend Core
9. 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
10. 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.
11. Choix de l’outil de build : 2017 Choix de l’outil de build : 2017
12. Bazel Buck
13. Construction incrementale DSL en Groovy Dynamisme du produit
14. Système à base de tâche.
15. Tâche Entrée Sortie
16. Assemble
17. Jar Assemble
18. Compile Jar Assemble
19. Compile Jar Assemble
20. Compile Jar Assemble Compile [ Up-to-date ] [ Up-to-date ] [ Up-to-date ] Jar Assemble
21. On ne construit que le nécessaire. On ne construit que le nécessaire.
22. Développeur Mainteneur de scripts Build master 1 2 3
23. Développeur Mainteneur de scripts Build master 1
24. Support IDE.
30. Gradle Wrapper.
32. 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
33. 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
34. 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
35. 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
36. 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
37. distributionhttps://internal/gradle/gradle/gradle/5.3/gradle-5.3-bin.zip distributionSha256Sum=53b71812f18cdb2777e9f1b2a0f2038683907c90bdc406bc6 Ne sont pas des variables d’environment valides !
39. 4 Go =
40. Gestion des dépendances
41. src main module kotlin test kotlin resources custom kotlin
42. dependencies { }
43. dependencies { compile("io.swagger:swagger-annotations:1.5.0") }
44. dependencies { compile("io.swagger:swagger-annotations:1.5.0") compile(group = "io.swagger", name = "swagger-annotations", version = "1.5.0") }
45. dependencies { compile("io.swagger:swagger-annotations:1.5.0") compile(group = "io.swagger", name = "swagger-annotations", version = "1.5.0") compile(project(":otherProject")) }
46. 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") }
47. 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") customCompile("org.codehaus.janino:janino:2.5.16") }
48. customCompile("org.codehaus.janino:janino:2.5.16") sourceSet configuration
49. 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")
50. 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")
51. 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")
52. runtimeOnly("org.codehaus.janino:janino:2.5.16") api("org.codehaus.janino:janino:2.5.16") implementation("org.codehaus.janino:janino:2.5.16")
53. mailer-service mailer-api amazing-mail com.lib.mailer.api com.lib.mailer.impl MailerService MailerApi webapp fr.amazing.client ClientMail
54. 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
55. Repositories.
56. repositories { }
57. repositories { mavenCentral() }
58. repositories { mavenCentral() jcenter() google() }
59. repositories { mavenCentral() jcenter() google() maven { url = uri("https://oss.sonatype.org/content/repositories/snapshots/") } }
60. repositories { mavenCentral() jcenter() google() maven { url = uri("https://oss.sonatype.org/content/repositories/snapshots/") } maven { url = uri("https://internal") content { includeGroupByRegex("com\\.mycompany.*") } } } Selection des dépendances
61. 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") } }
62. 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") } mavenLocal() } Devrait être inutile
63. projectA projectB mavenLocal publishToMavenLocal Dépend de…
64. Composite Build.
65. projectA projectB compositeBuild includeBuild(…)
66. projectA projectB dependencySource gitRepository(https://github.com/…) version = branch/tag
67. mailer 1.0.0 Master dev/feature superProject otherProject projectZ
68. mailer 1.0.0 Master dev/feature superProject OK otherProject OK projectZ OK
69. mailer 1.0.0 master superProject OK OK otherProject OK OK projectZ OK KO Dependency sources
70. mailer 1.0.0 master dev/feature superProject OK OK KO otherProject OK OK OK projectZ OK KO OK Dependency sources Dependency sources
71. Performance.
73. 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
75. Daemon Gradle 5.1.1 Daemon Gradle 4.10
78. Simplicité d’utilisation Performance Fonctionnalités
79. Développeur Mainteneur de scripts Build master 2
80. 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
81. Data Payments Backend Reporting Accounting Regulators Data sciences GDPR Users Transfers Customers Collections Cards KYC Limit controller
82. Backend GDPR Users Customers KYC Limit controller kotlin nexus release lint Configuration
83. Plugin interne.
84. apply(plugin = "com.your.company.commons")
86. Configurer une seule fois, Exécuter partout.
87. buildSrc.
92. src main buildSrc kotlin myProject
93. open class MyExtension(var yourName: String = "not defined!")
94. open class MyExtension(var yourName: String = "not defined!") class MyPlugin : Plugin<Project> { override fun apply(project: Project) { } }
95. open class MyExtension(var yourName: String = "not defined!") class MyPlugin : Plugin<Project> { override fun apply(project: Project) { val exts = project.extensions.create("myPlugin", MyExtension::class) } }
96. open class MyExtension(var yourName: String = "not defined!") class MyPlugin : Plugin<Project> { override fun apply(project: Project) { val exts = project.extensions.create("myPlugin", MyExtension::class) project.task("myTask") { doLast { println("hello ${exts.yourName}") } } } }
97. apply<MyPlugin>() configure<MyExtension> { yourName = "Devoxx France" }
99. DSL.
100. Groovy DSL.
101. sourceSets { } Groovy
102. sourceSets { integrationTest { } } DSL Dynamique Groovy
104. Type safety IDE Support Navigation Refactoring
105. sourceSets { integrationTest { } } Groovy
106. sourceSets.create("integrationTest") { … } Kotlin
110. idea { project { settings { runConfigurations { "Start Application"(Application) { // … } } } } } Groovy
111. idea { project { this as ExtensionAware configure<ProjectSettings> { this as ExtensionAware configure<NamedDomainObjectContainer<RunConfiguration>> { // cast to PolymorphicDomainObjectContainer to access the create method used bellow. @Suppress("UnstableApiUsage") this as PolymorphicDomainObjectContainer<RunConfiguration> create("Start Application", Application::class) { // … } } } } } Kotlin
112. « Un langage pour les gouverner tous. »
113. Migration vers Kotlin DSL.
114. object Versions { val assertj = "3.10.0" val junit = "4.12" val mockito = "2.19.1" val mockito_kotlin = "1.6.0" val postgres = "42.2.4" val prometheus = "0.6.0" val springboot = "2.1.3.RELEASE" val swagger = "1.5.20" }
115. object TestDeps { val assertj = "org.assertj:assertj-core:${Versions.assertj}" val junit = "junit:junit:${Versions.junit}" val mockito = "org.mockito:mockito-core:${Versions.mockito}" }
116. dependencies { testImplementation(TestDeps.assertj) testImplementation(TestDeps.junit) testImplementation(TestDeps.mockito) }
117. 1. Doublez vos quotes.
118. allprojects { group = 'com.margo.backend' version = '1.0' } Groovy
119. allprojects { group = 'com.margo.backend' version = '1.0' } Groovy
120. allprojects { group = "com.margo.backend" version = "1.0" } Kotlin
121. 2. Explicitez vos assignations.
122. repositories { maven { url 'https://plugins.gradle.org/m2/' } } Groovy
123. repositories { maven { url = uri("https://plugins.gradle.org/m2/") } } Kotlin
124. dependencies { compile project(":service") } Groovy
125. dependencies { compile(project(":service")) } Kotlin
126. val commit by extra { Git.commit() } Kotlin
127. object Git { fun commit() = Runtime.getRuntime() .exec("git rev-parse --short HEAD") .inputStream.bufferedReader() .readText() } buildSrc
128. 3. Fichier par fichier.
129. web buildSrc src build.gradle settings.gradle build.gradle src build.gradle
130. build.gradle.kts web buildSrc src settings.gradle build.gradle src build.gradle
131. settings.gradle.kts build.gradle.kts web buildSrc src build.gradle src build.gradle
132. build.gradle.kts settings.gradle.kts build.gradle.kts web buildSrc src src build.gradle
133. web buildSrc src build.gradle.kts settings.gradle.kts build.gradle.kts src build.gradle.kts
134. Quelques difficultés.
135. 1. Documentation.
137. 2. Exemples.
140. 3. Utilisation avancée.
141. processResources { filesMatching('**/*.properties') { expand(project.properties) } } Groovy
142. tasks .withType(ProcessResources::class) .named("processResources") .configure { filesMatching("**/*.properties") { expand(project.properties) } } Kotlin
143. tasks .withType(ProcessResources::class) .named("processResources") .configure { filesMatching("**/*.properties") { expand(project.properties) } } Kotlin
144. tasks .withType(ProcessResources::class) .named("processResources") .configure { filesMatching("**/*.properties") { expand(project.properties) } } Kotlin
145. tasks .withType(ProcessResources::class) .named("processResources") .configure { filesMatching("**/*.properties") { expand(project.properties) } } Kotlin
146. tasks .withType(ProcessResources::class) .named("processResources") .configure { filesMatching("**/*.properties") { expand(project.properties) } } Kotlin
147. tasks .withType(ProcessResources::class) .named("processResources") .configure { filesMatching("**/*.properties") { expand(project.properties) } } Kotlin
148. 4. Migration du plugin interne.
149. Si c’était à refaire ?
150. buildSrc Performance Plugin interne IDE Support
151. Prochaines étapes. Consommation mémoire Build cache
152. Questions ?