Gradle
Gradle has a built in dependency management component that supports the Maven repository format. In order to configure a Gradle project to resolve dependencies declared in build.gradle file, a maven repository as shown in Minimal Gradle Setup has to be declared.
repositories {
maven {
url "http://localhost:8081/repository/maven-public/"
}
}These minimal settings allow Gradle to download the declared dependencies.
The above setup is specific to each project. Alternatively an init.gradle file placed e.g., in ~/.gradle can establish the repository as the source for dependencies in all projects. A simple implementation could look like:
allprojects {
ext.RepoConfigurator = {
maven {
url = uri('http://localhost:8081/nexus/content/groups/public') }
}
buildscript.repositories RepoConfigurator
repositories RepoConfiguratorOther setup could be an expansion of the following example allowing file system based repositories:
/**
* init.gradle file for development using the Nexus Repository Manager as proxy repository
*
* @author Manfred Moser <manfred@simpligility.com>
*/
apply plugin:NexusRepositoryPlugin
class NexusRepositoryPlugin implements Plugin<Gradle> {
final static String LOG_PREFIX = "init.gradle/NexusRepositoryPlugin:"
final Closure NexusConfig = {
maven {
name = 'standard-nexus'
url = 'http://localhost:8081/nexus/content/groups/public'
}
// if required you can add further repositories or groups here
// and they will be left intact if the name starts with standard-
// although it is better to just add those repositories in Nexus
// and expose them via the public group
}
final Closure RepoHandler = {
all { ArtifactRepository repo ->
if (repo.name.toString().startsWith("standard-") ) {
println "$LOG_PREFIX $repo.name at $repo.url activated as repository."
} else {
if (repo instanceof MavenArtifactRepository) {
remove repo
println "$LOG_PREFIX $repo.name at $repo.url removed."
} else {
println "$LOG_PREFIX $repo.name kept (not a Maven repository)."
}
}
}
}
void apply(Gradle gradle) {
// Override all project specified Maven repos with standard
// defined in here
gradle.allprojects{ project ->
println "$LOG_PREFIX Reconfiguring repositories."
project.repositories RepoHandler
project.buildscript.repositories RepoHandler
project.repositories NexusConfig
project.buildscript.repositories NexusConfig
}
}
}Gradle init scripts can be much more powerful and customized and are explained with more examples in the official Gradle documentation.
To deploy build outputs to a repository with the uploadArchives task, user authentication can be declared in e.g., gradle.properties:
nexusUrl=http://localhost:8081/nexus nexusUsername=admin nexusPassword=admin123
and then used in the uploadArchives task with a mavenDeployer configuration from the Maven plugin:
uploadArchives {
repositories {
mavenDeployer {
repository(
url: "${nexusUrl}/content/repositories/releases") {
authentication(userName: nexusUsername, password: nexusPassword)
}
snapshotRepository(
url: "${nexusUrl}/content/repositories/snapshots") {
authentication(userName: nexusUsername, password: nexusPassword)
}
}
}
}Full example projects can be found in the gradle folder of the documentation book examples. A full build of the simple-project, including downloading the declared dependencies and uploading the build output to the repository manager can be invoked with
cd gradle/simple-project gradle upload