MavenCentral Publisher

A gradle plugin to easily upload libraries to MavenCentral for distribution.

Requirements

• Create a project at Sonatype Jira
• Create a GPG key pair

Usage

1.- Apply the plugin

Apply the plugin in your build.gradle:

Groovy

plugins {
	id 'dev.sarquella.mavencentral-publisher' version '1.0.0'
}

Kotlin

plugins {
	id("dev.sarquella.mavencentral-publisher") version "1.0.0"
}

2.- Configure credentials

Add the following to your local.properties file, or create your own *.properties file (e.g. maven-publish.properties). If you use a custom properties file, you should specify its path in the publication configuration (See next step).

Important: Make sure it is listed in your .gitignore file to avoid publishing your credentials

ossrhUsername=OSSRH_USERNAME
ossrhPassword=OSSR_PASSWORD
signingKeyId=SIGNING_KEY_ID
signingKeyPassword=SIGNING_KEY_PASSWORD
signingKeyFile=SIGNING_KEY_FILE.gpg

Replace with your own values:

• OSSRH_USERNAME and OSSR_PASSWORD are your Sonatype Jira's account credentials. See more
• SIGNING_KEY_ID, SIGNING_KEY_PASSWORD and SIGNING_KEY_FILE are your GPG key id, passphrase and file path respectively. See more

3.- Configure publication

Add the following to your build.gradle and replace with your own values:

Note: Your library will be finally published as groupId:artifact:version

Only the mandatory parameters are listed in this example. For a full list of all the available parameters, as well as a brief explanation of each, see the Parameters section

Groovy

mavenCentralPublication {
  groupId = 'GROUP_ID'
  artifact = 'ARTIFACT'
  version = 'VERSION'

  repoUrl = 'REPO_URL'
  vcsUrl = 'VCS_URL'

  developer {
  	id = 'DEVELOPER_ID'
  	name = 'DEVELOPER_NAME'
  	email = 'DEVELOPER_EMAIL'
  }

  license {
  	name = 'LICENSE_NAME'
  	url = 'LICENSE_URL'
  }
}

Kotlin

mavenCentralPublication {
  groupId.set("GROUP_ID")
  artifact.set("ARTIFACT")
  version.set("VERSION")

  repoUrl.set("REPO_URL")
  vcsUrl.set("VCS_URL")

  developer {
  	id.set("DEVELOPER_ID")
  	name.set("DEVELOPER_NAME")
  	email.set("DEVELOPER_EMAIL")
  }

  license {
  	name.set("LICENSE_NAME")
  	url.set("LICENSE_URL")
  }
}

4.- Publish to MavenCentral

Run the following command to upload the library to MavenCentral

./gradlew publishToMavenCentral

5.- Promote to Release

Promote library to release

Parameters

• groupId: Library's group name (e.g., com.company.library)

• artifact: Library's concrete artifact name

• version: Library's current version (e.g., 1.0.0)

• description [Optional]: Short description about the library. If not set, defaults to "-" char.

• repoUrl: Code repository url (e.g., https://github.com/<username>/<repository>)

• vcsUrl: Version control url (e.g., https://github.com/<username>/<repository>.git)

• webUrl [Optional]: Library's website url. If not set, defaults to repoUrl value.

• developer

  • id: Library's developer id
  • name: Library's developer name
  • email: Library's developer email

• license

  • name: Library's license name (e.g., The Apache Software License, Version 2.0)
  • url: Library's license url (e.g., http://www.apache.org/licenses/LICENSE-2.0.txt)

• archiveFileName [Optional]: Custom build output file name if different from defaults (e.g. mylibrary-<flavor>-release.aar). In Android, defaults to <project>-release.aar. In non-Android, defaults to <project>-<version>.jar

• propertiesFile [Optional]: Path to custom *.properties file where credentials are defined. If not set, defaults to local.properties.

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Thanks to Márton Braun for this great article which this plugin is inspired on.

License

LICENSE

Copyright 2021 Adrià Sarquella Farrés

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.