In Gradle, how can I generate a POM file with dynamic dependencies resolved to the actual version used?

Question

In Gradle, how can I generate a POM file with dynamic dependencies resolved to the actual version used?

dependencies {
    testCompile(group: \'junit\', name         


        

Answer 1

I've taken a stab at integrating this into a plugin that can be applied, the specific code is available here: https://github.com/nebula-plugins/nebula-publishing-plugin/blob/master/src/main/groovy/nebula/plugin/publishing/maven/ResolvedMavenPlugin.groovy

And it can be included via jcenter() via 'com.netflix.nebula:nebula-publishing-plugin:1.9.1'.

Answer 2

It will require some effort to code this up. The two main parts are:

• Querying resolved versions using the Configuration#getIncoming or Configuration#getResolvedConfiguration API
• Manipulating the POM using Groovy's XMlParser API (assuming the new maven-publish plugin is used)

Information about the Configuration API can be found in the Gradle Build Language Reference, which further links into the Javadoc. The full Gradle distribution contains a tiny sample that demonstrates POM manipulation. Information about XmlParser can be found in the Groovy docs.

Answer 3

The solution with the pom.withXml() suggested by Peter looks like this:

publishing {
  publications {
    mavenCustom(MavenPublication) {
        from components.java
            pom.withXml {
                // Generate map of resolved versions
                Map resolvedVersionMap = [:]
                Set<ResolvedArtifact> resolvedArtifacts = configurations.compile.getResolvedConfiguration().getResolvedArtifacts()
                resolvedArtifacts.addAll(configurations.testCompile.getResolvedConfiguration().getResolvedArtifacts())
                resolvedArtifacts.each {
                    ModuleVersionIdentifier mvi = it.getModuleVersion().getId();
                    resolvedVersionMap.put("${mvi.getGroup()}:${mvi.getName()}", mvi.getVersion())
                }

              // Update dependencies with resolved versions
              def hasDependencies = !asNode().dependencies.isEmpty()
              if (hasDependencies) {
                  asNode().dependencies.first().each {
                      def groupId = it.get("groupId").first().value().first()
                      def artifactId = it.get("artifactId").first().value().first()
                      it.get("version").first().value = resolvedVersionMap.get("${groupId}:${artifactId}")
              }
          }
      }
   }
}