gradle: how to share a build.gradle which contains information I am the only one to have?

Question

My build.gradle file contains a section like this to upload archives to SonaType:

uploadArchives {
    repositories {
        mavenDeployer {
            beforeDeployment {
                MavenDeployment deployment -> signing.signPom(deployment);
            }

            // HERE
            repository(url: sonatypeRepoURI) { 
                authentication(userName: sonatypeUsername,
                    password: sonatypePassword);
            }

            pom.project {
                // etc etc
            }
        }
    }
}

At the point marked HERE, other users wishing to use my build file will fail, because at least the first variable is not defined:

FAILURE: Build failed with an exception.

* Where:
Build file '/path/to/build.gradle' line: 144

* What went wrong:
A problem occurred evaluating root project 'whateverTheProject'.
> No such property: sonatypeRepoURI for class: 
  org.gradle.api.publication.maven.internal.ant.DefaultGroovyMavenDeployer

How do I modify the section above so that users are not affected by these variables not being defined for them?

Answer 1

You could try to add all the needed properties to your gradle.properties file, which you add to version control, but leave the values empty.

Eg:

version=1.0
signing.keyId=
signing.password=
signing.secretKeyRingFile=

sonatypeUsername=
sonatypePassword=

Then you override these in your own ${USER}/.gradle/gradle.properties. As an example take a look at a working project https://github.com/judoole/monitorino. Should be able to run all tasks at any machine except snapshot, stage and build.

Edit: I would not do it like this today. Follow the Gradle guide, using required. Just as the example from @jb-nizet Gradle ref 53.3.3 Conditional Signing: http://www.gradle.org/docs/current/userguide/signing_plugin.html