Support Gradle RepositoryContentDescriptor

[marverix]

Gradle has RepositoryContentDescriptor which allows you to configure which packages, modules, groups, etc should be excluded/included . One can use it to tell Gradle to (not) look into given repository if given package is processed.

Example, settings.gradle:

dependencyResolutionManagement {
    repositories {
        mavenCentral {
            content {
                excludeGroupByRegex("company.*")
            }
        }
        maven {
            url 'https://my.custom.registry/maven/'
        }
    }
}

This could be translated to Renovate's:

"packageRules": [
  {
    "matchCategories": ["java"],
    "registryUrls": ["https://my.custom.registry/maven/"]
  },
  {
    "matchCategories": ["java"],
    "matchDepNames": ["!/company.*"],
    "registryUrls": ["https://repo.maven.apache.org/maven2/"]
  }
]

[Churro]

This feature request is related to #14208 but should probably be tracked separately anyway, due to the different patterns that need addition. renovate's gradle manager currently lacks support for RepositoryContentDescriptor. The proposal to translate parsed statements into package rules seems appealing, but by the time parsing happens, it is already too late to add package rules.

Note that excludeGroupByRegex is just one possible flavor but there's also include{Group,Module,Version}, then include{GroupByRegex, ModuleByRegex, VersionByRegex}, and the corresponding exclude counterparts that would each need separate parsing and handling.

[rarkins]

Does it need a reproduction before converting to an Issue?

[Churro]

Would be great to test any implementation against it but I wouldn't expect it to cover all possible flavors (as mentioned before).