Get Transitive dependencies in Plugin

Karthik1 · February 12, 2018, 8:41pm

#1. I am trying to fetch transitive dependencies inside a gradle plugin . I tried to use getAllDependencies api for configuration object. But I am still unable to get transitive dependencies. Is there anything I am missing ?

for (Configuration cfg : project.getConfigurations()) {
DefaultDependencySet depset = (DefaultDependencySet) cfg.getAllDependencies();
…
}

#2. How does cfg.getIncoming().getDependencies differ from cfg.getAllDependencies or cfg.getDependencies ?

st_oehme · February 13, 2018, 10:11am

Configuration.dependencies gives you the declared dependencies, i.e. what the user wrote in their build script. It does not resolve anything.

Configurationincoming.resolutionResult gives you the resolved dependency graph. There is also Configurationincoming.artifacts when you only need a flat list of artifacts and their origin.

Configuration.incoming.dependencies is just an alias for Configuration.allDependencies.

Gradle 4.6 will have much improved documentation on this in the user guide

Please note that resolving dependencies is costly, so doing this in a loop over all projects and all configurations will be a slow process. What’s your use case?

Lance · February 14, 2018, 8:33am

You might find the following code helpful where I determine the set of transitive dependencies for a given artifact

github.com

uklance/gradle-java-monkey-patch/blob/master/java-monkey-patch/src/main/groovy/com/lazan/JavaMonkeyPatchPlugin.groovy#L68


        ModuleVersionIdentifier mvi = artifact.moduleVersion.id
        def dependency = [
                group  : mvi.group,
                name   : mvi.name,
                version: mvi.version,
                ext    : artifact.extension
        ]
        if (artifact.classifier) {
            dependency['classifier'] = artifact.classifier
        }
        depSet << dependency
    }
}


depSet.each { Map dependency ->
    logger.info "Adding $dependency"
    dependencies.compile(dependency) {
        transitive = false
    }
}

st_oehme · February 14, 2018, 9:19am

@Lance your example is using the resolvedConfiguration API which we’ll deprecated and remove soon. Please always use Configuration.incoming.

Lance · February 14, 2018, 10:03am

Thanks for the code review

Karthik1 · February 16, 2018, 4:53am

@Lance, @st_oehme

Thanks for your reply. I tried your inputs. Please help me how I can distinguish between transitive dependencies and declared/original dependencies from Configuration.incoming.dependencies ?