Allow easy pass-through of other recommendations.

[noel-yap]

We would like to be able easily to pass through other recommendations BOM, something like:

dependencies {
  recommendation 'netflix.grpc:netflix-grpc-recommendations:latest.release@pom'
}

where netflix.grpc:netflix-grpc-recommendations:latest.release@pom is the other recommendations BOM to be passed through. This can be done with some logic in the build.gradle file. It would be more readable and less complex to the maintainer of that file if that logic were abstracted away and hidden within the recommendations plugin itself.

[noel-yap]

It looks like MavenBomRecommendationProvider exists. Let me try that.

[noel-yap]

MavenBomRecommendationProvider has the BOM include the pom file itself, not what it's recommending.

[DanielThomas]

netflix.nebula.dependency.recommender.publisher.MavenBomXmlGenerator is the guy responsible for generating the dependencyManagement XML. That's where we'd need to pull any POMs and merge any dependencies or dependencyManagement sections.

[noel-yap]

For others who may want to be doing something similar and possibly as a foundation for implementing this functionality directly in the plugin, the following is what I did:

configurations {
  passThroughRecommendationsOf
}

dependencies {
  passThroughRecommendationsOf 'netflix.grpc:netflix-grpc-recommendations:latest.release@pom'

  project.configurations.passThroughRecommendationsOf.resolvedConfiguration.getFiles(org.gradle.api.specs.Specs.SATISFIES_ALL).each {
    final pomXml = new XmlSlurper().parseText(it.text)

    pomXml.dependencyManagement.dependencies.dependency.each {
      recommendation "${it.groupId.text()}:${it.artifactId.text()}:${it.version.text()}"
    }
  }
}

[gregallen]

slight simplification:

configurations.passThroughRecommendationsOf.resolvedConfiguration.resolvedArtifacts.each {
    logger.info "Importing bom: $it.id"
    new XmlSlurper().parse(it.file).dependencyManagement.dependencies.dependency.each {
        compile "${it.groupId.text()}:${it.artifactId.text()}:${it.version.text()}"
    }
}