groovy - Gradle function to define custom maven repository?

Question

I end up having to define my maven repository all over the place in my build.gradle files. The definition can often be very cumbersome:

repositories {
    jcenter()

    maven {
        url "https://mymavenurl/releases"
        credentials(Credentials) {
            username USERNAME
            password PASSWORD
        }
    }
}

Notice above how gradle offers a nice way of defining commonly used maven repositories (i.e. jcenter()). I'd like a way in a plugin or in a parent gradle script to define the repository in a function, or statically, and then just call it inside the repositories block: myMavenRepo().

My knowledge of groovy is lacking, so I don't quite have the understanding I need to parse the groovy sources that I'm seeing to find a nice way to do this. How would I do this?

I'm aware that in a parent gradle file, I could use allProjects or subProjects. I don't want to add these maven repositories to all modules, but instead only specific ones.

Answer 1

Try something like this:

repositories.ext.myRepo = {
    repositories.maven {
        url "https://mymavenurl/releases"
        credentials() {
            username USERNAME
            password PASSWORD
        }
    }
}

Then you should be able to call:

repositories {
    mavenCentral()
    myRepo()
}

The same can be accomplished for buildscript repositories:

buildscript.repositories.ext.myRepo = {
    buildscript.repositories.maven {
        url "https://mymavenurl/releases"
        credentials() {
            username USERNAME
            password PASSWORD
        }
    }
}