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Working with the Gradle registry

You can configure Gradle to publish packages to the GitHub Packages Gradle registry and to use packages stored on GitHub Packages as dependencies in a Java project.

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Observação: atualmente, o GitHub Packages está em versão beta no GitHub AE.

Authenticating to GitHub Packages

You need an access token to publish, install, and delete private, internal, and public packages.

You can use a personal access token to authenticate to GitHub Packages or the GitHub AE API. When you create a personal access token, you can assign the token different scopes depending on your needs. For more information about packages-related scopes for a personal access token, see "About permissions for GitHub Packages."

To authenticate to a GitHub Packages registry within a GitHub Actions workflow, you can use:

  • GITHUB_TOKEN to publish packages associated with the workflow repository.
  • a personal access token with at least packages:read scope to install packages associated with other private repositories (which GITHUB_TOKEN can't access).

Para obter mais informações sobre o GITHUB_TOKEN usado em fluxos de trabalho do GitHub Actions, confira "Autenticação em um fluxo de trabalho". For more information about using GITHUB_TOKEN with Gradle, see "Publishing Java packages with Gradle."

Authenticating with a personal access token

You must use a personal access token with the appropriate scopes to publish and install packages in GitHub Packages. For more information, see "About GitHub Packages."

You can authenticate to GitHub Packages with Gradle using either Gradle Groovy or Kotlin DSL by editing your build.gradle file (Gradle Groovy) or build.gradle.kts file (Kotlin DSL) file to include your personal access token. You can also configure Gradle Groovy and Kotlin DSL to recognize a single package or multiple packages in a repository.

Replace REGISTRY-URL with the URL for your enterprise's Maven registry, maven.HOSTNAME. Replace HOSTNAME with the host name of your enterprise.

Replace USERNAME with your GitHub username, TOKEN with your personal access token, REPOSITORY with the name of the repository containing the package you want to publish, and OWNER with the name of the user or organization account on GitHub that owns the repository. Because uppercase letters aren't supported, you must use lowercase letters for the repository owner even if the GitHub user or organization name contains uppercase letters.

Note: O GitHub Packages dá suporte às versões de SNAPSHOT do Apache Maven. Para usar o repositório do GitHub Packages para baixar artefatos SNAPSHOT, habilite SNAPSHOTS no POM do projeto de consumo ou no arquivo ~/.m2/settings.xml. For an example, see "Configuring Apache Maven for use with GitHub Packages."

Example using Gradle Groovy for a single package in a repository

plugins {
    id("maven-publish")
}
publishing {
    repositories {
        maven {
            name = "GitHubPackages"
            url = uri("https://REGISTRY-URL/OWNER/REPOSITORY")
            credentials {
                username = project.findProperty("gpr.user") ?: System.getenv("USERNAME")
                password = project.findProperty("gpr.key") ?: System.getenv("TOKEN")
            }
        }
    }
    publications {
        gpr(MavenPublication) {
            from(components.java)
        }
    }
}

Example using Gradle Groovy for multiple packages in the same repository

plugins {
    id("maven-publish") apply false
}
subprojects {
    apply plugin: "maven-publish"
    publishing {
        repositories {
            maven {
                name = "GitHubPackages"
                url = uri("https://REGISTRY-URL/OWNER/REPOSITORY")
                credentials {
                    username = project.findProperty("gpr.user") ?: System.getenv("USERNAME")
                    password = project.findProperty("gpr.key") ?: System.getenv("TOKEN")
                }
            }
        }
        publications {
            gpr(MavenPublication) {
                from(components.java)
            }
        }
    }
}

Example using Kotlin DSL for a single package in the same repository

plugins {
    `maven-publish`
}
publishing {
    repositories {
        maven {
            name = "GitHubPackages"
            url = uri("https://REGISTRY-URL/OWNER/REPOSITORY")
            credentials {
                username = project.findProperty("gpr.user") as String? ?: System.getenv("USERNAME")
                password = project.findProperty("gpr.key") as String? ?: System.getenv("TOKEN")
            }
        }
    }
    publications {
        register<MavenPublication>("gpr") {
            from(components["java"])
        }
    }
}

Example using Kotlin DSL for multiple packages in the same repository

plugins {
    `maven-publish` apply false
}
subprojects {
    apply(plugin = "maven-publish")
    configure<PublishingExtension> {
        repositories {
            maven {
                name = "GitHubPackages"
                url = uri("https://REGISTRY-URL/OWNER/REPOSITORY")
                credentials {
                    username = project.findProperty("gpr.user") as String? ?: System.getenv("USERNAME")
                    password = project.findProperty("gpr.key") as String? ?: System.getenv("TOKEN")
                }
            }
        }
        publications {
            register<MavenPublication>("gpr") {
                from(components["java"])
            }
        }
    }
}

Publishing a package

Por padrão, o GitHub publica o pacote em um repositório existente com o mesmo nome do pacote. For example, GitHub will publish a package named com.example.test in the OWNER/test GitHub Packages repository.

Após publicar um pacote, você poderá visualizá-lo no GitHub. Para obter mais informações, confira "Como ver pacotes".

  1. Autenticar para GitHub Packages. Para obter mais informações, confira "Autenticação no GitHub Packages".

  2. After creating your package, you can publish the package.

    $ gradle publish

Using a published package

To use a published package from GitHub Packages, add the package as a dependency and add the repository to your project. For more information, see "Declaring dependencies" in the Gradle documentation.

  1. Autenticar para GitHub Packages. Para obter mais informações, confira "Autenticação no GitHub Packages".

  2. Add the package dependencies to your build.gradle file (Gradle Groovy) or build.gradle.kts file (Kotlin DSL) file.

    Example using Gradle Groovy:

    dependencies {
        implementation 'com.example:package'
    }

    Example using Kotlin DSL:

    dependencies {
        implementation("com.example:package")
    }
  3. Add the repository to your build.gradle file (Gradle Groovy) or build.gradle.kts file (Kotlin DSL) file.

    Example using Gradle Groovy:

    repositories {
        maven {
            url = uri("https://REGISTRY-URL/OWNER/REPOSITORY")
            credentials {
                username = project.findProperty("gpr.user") ?: System.getenv("USERNAME")
                password = project.findProperty("gpr.key") ?: System.getenv("TOKEN")
            }
        }
    }

    Example using Kotlin DSL:

    repositories {
        maven {
            url = uri("https://REGISTRY-URL/OWNER/REPOSITORY")
            credentials {
                username = project.findProperty("gpr.user") as String? ?: System.getenv("USERNAME")
                password = project.findProperty("gpr.key") as String? ?: System.getenv("TOKEN")
            }
        }
    }

Further reading