Configure Maven publications with Gradle

Prior to this commit, the build would use a custom task to create a BOM
and manually include/exclude/customize dependencies. It would also use
the "maven" plugin to customize the POM before publication.

This commit now uses a Gradle Java Platform for publishing the Spring
Framework BOM. We're also now using the "maven-publish" plugin to
prepare and customize publications.

This commit also tells the artifactory plugin (which is currently
applied only on the CI) not to publish internal modules.

See gh-23282

build.gradle

@@ -45,7 +45,7 @@ ext {
 	}
 }
 
-configure(allprojects.findAll { (it.name != "spring-framework-bom") } ) { project ->
+configure(allprojects.findAll { (it.name != "framework-bom") } ) { project ->
 	group = "org.springframework"
 
 	apply plugin: "java"
@@ -177,6 +177,7 @@ configure(rootProject) {
 	apply plugin: "kotlin"
 	apply plugin: "io.spring.nohttp"
 	apply plugin: 'org.springframework.build.api-diff'
+	apply from: "${rootDir}/gradle/publications.gradle"
 	apply from: "${rootDir}/gradle/docs.gradle"
 
 	nohttp {
@@ -200,10 +201,14 @@ configure(rootProject) {
 		asciidoctor("io.spring.asciidoctor:spring-asciidoctor-extensions:0.1.3.RELEASE")
 	}
 
-	artifacts {
-		archives docsZip
-		archives schemaZip
-		archives distZip
+	publishing {
+		publications {
+			springFramework(MavenPublication) {
+				artifact docsZip
+				artifact schemaZip
+				artifact distZip
+			}
+		}
 	}
 }
 

framework-bom/framework-bom.gradle

@@ -1,35 +1,23 @@
 description = "Spring Framework (Bill of Materials)"
 
-apply plugin: "java"
-apply plugin: "maven"
+apply plugin: 'java-platform'
+apply from: "$rootDir/gradle/publications.gradle"
 
-configurations.archives.artifacts.clear()
-artifacts {
-	// work around GRADLE-2406 by attaching text artifact
-	archives(file("spring-framework-bom.txt"))
-}
+group = "org.springframework"
 
-install {
-	repositories.mavenInstaller {
-		pom.whenConfigured {
-			packaging = "pom"
-			withXml {
-				asNode().children().last() + {
-					delegate.dependencyManagement {
-						delegate.dependencies {
-							parent.moduleProjects.sort { "$it.name" }.each { p ->
-								if (p != project) {
-									delegate.dependency {
-										delegate.groupId(p.group)
-										delegate.artifactId(p.name)
-										delegate.version(p.version)
-									}
-								}
-							}
-						}
-					}
-				}
-			}
+dependencies {
+	constraints {
+		parent.moduleProjects.sort { "$it.name" }.each {
+			api it
 		}
 	}
 }
+
+publishing {
+	publications {
+		springFramework(MavenPublication) {
+			artifactId = 'spring-framework-bom'
+			from components.javaPlatform
+		}
+	}
+}

framework-bom/spring-framework-bom.txt

@@ -1,4 +0,0 @@
-This meta-project is used to generate a bill-of-materials POM that contains the other
-projects in a dependencyManagement section.
-
-<https://docs.spring.io/spring-framework/docs/current/spring-framework-reference/overview.html#overview-getting-started>

gradle/publications.gradle

@@ -0,0 +1,40 @@
+apply plugin: "maven-publish"
+
+publishing {
+	publications {
+		springFramework(MavenPublication) {
+			pom {
+				name = project.description
+				description = project.description
+				url = "https://github.com/spring-projects/spring-framework"
+				organization {
+					name = "Spring IO"
+					url = "https://spring.io/projects/spring-framework"
+				}
+				licenses {
+					license {
+						name = "Apache License, Version 2.0"
+						url = "https://www.apache.org/licenses/LICENSE-2.0"
+						distribution = "repo"
+					}
+				}
+				scm {
+					url = "https://github.com/spring-projects/spring-framework"
+					connection = "scm:git:git://github.com/spring-projects/spring-framework"
+					developerConnection = "scm:git:git://github.com/spring-projects/spring-framework"
+				}
+				developers {
+					developer {
+						id = "jhoeller"
+						name = "Juergen Hoeller"
+						email = "jhoeller@pivotal.io"
+					}
+				}
+				issueManagement {
+					system = "GitHub"
+					url = "https://github.com/spring-projects/spring-framework/issues"
+				}
+			}
+		}
+	}
+}

gradle/spring-module.gradle

@@ -1,7 +1,7 @@
 apply plugin: 'org.springframework.build.compile'
 apply plugin: 'org.springframework.build.optional-dependencies'
 apply plugin: 'org.springframework.build.test-sources'
-apply plugin: "maven"
+apply from: "$rootDir/gradle/publications.gradle"
 
 jar {
 	manifest.attributes["Implementation-Title"] = project.name
@@ -47,66 +47,14 @@ task javadocJar(type: Jar) {
 	from javadoc
 }
 
-artifacts {
-	archives sourcesJar
-	archives javadocJar
-}
-
-install {
-	repositories.mavenInstaller {
-		customizePom(pom, project)
+publishing {
+	publications {
+		springFramework(MavenPublication) {
+			from components.java
+			artifact sourcesJar
+			artifact javadocJar
+		}
 	}
 }
 
-def customizePom(pom, gradleProject) {
-	pom.whenConfigured { generatedPom ->
-		// eliminate test-scoped dependencies (no need in maven central poms)
-		generatedPom.dependencies.removeAll { dep ->
-			dep.scope == "test"
-		}
-
-		// sort to make pom dependencies order consistent to ease comparison of older poms
-		generatedPom.dependencies = generatedPom.dependencies.sort { dep ->
-			"$dep.scope:$dep.groupId:$dep.artifactId"
-		}
 
-		def managedVersions = dependencyManagement.managedVersions
-		generatedPom.dependencies.findAll{dep -> !dep.version }.each { dep ->
-			dep.version = managedVersions["${dep.groupId}:${dep.artifactId}"]
-		}
-
-		// add all items necessary for maven central publication
-		generatedPom.project {
-			name = gradleProject.description
-			description = gradleProject.description
-			url = "https://github.com/spring-projects/spring-framework"
-			organization {
-				name = "Spring IO"
-				url = "https://projects.spring.io/spring-framework"
-			}
-			licenses {
-				license {
-					name "Apache License, Version 2.0"
-					url "https://www.apache.org/licenses/LICENSE-2.0"
-					distribution "repo"
-				}
-			}
-			scm {
-				url = "https://github.com/spring-projects/spring-framework"
-				connection = "scm:git:git://github.com/spring-projects/spring-framework"
-				developerConnection = "scm:git:git://github.com/spring-projects/spring-framework"
-			}
-			developers {
-				developer {
-					id = "jhoeller"
-					name = "Juergen Hoeller"
-					email = "jhoeller@pivotal.io"
-				}
-			}
-			issueManagement {
-				system = "GitHub"
-				url = "https://github.com/spring-projects/spring-framework/issues"
-			}
-		}
-	}
-}

integration-tests/integration-tests.gradle

@@ -19,4 +19,9 @@ dependencies {
 	testCompile("org.aspectj:aspectjweaver:${aspectjVersion}")
 	testCompile("org.hsqldb:hsqldb:${hsqldbVersion}")
 	testCompile("org.hibernate:hibernate-core:5.1.17.Final")
-}
+}
+
+// Avoid publishing JAR to the artifact repository
+if (pluginManager.hasPlugin("com.jfrog.artifactory")) {
+	artifactoryPublish.skip = true
+}

spring-core/kotlin-coroutines/kotlin-coroutines.gradle

@@ -10,8 +10,8 @@ dependencies {
 	compile("org.jetbrains.kotlinx:kotlinx-coroutines-reactor")
 }
 
-// Avoid publishing coroutines JAR to the artifact repository
-if (pluginManager.hasPlugin("artifactoryPublish")) {
+// Avoid publishing JAR to the artifact repository
+if (pluginManager.hasPlugin("com.jfrog.artifactory")) {
 	artifactoryPublish.skip = true
 }