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Heroku Gradle Plugin

This plugin is used to deploy Gradle based JVM applications directly to Heroku without pushing to a Git repository. This can be useful when deploying from a CI server.

Using the Plugin

Add the plugin to your build.gradle:

plugins {
  id "com.heroku.sdk.heroku-gradle" version "2.0.0"
}

Create a Heroku app using the Heroku CLI:

$ heroku create

Build your application, and run the deployHeroku task:

$ ./gradlew build deployHeroku

Configuration

You can configure the heroku-gradle plugin by using the heroku directive in your build.gradle configuration.

You can configure your Heroku app name like this:

heroku {
  appName = "sushi"
}

You can include extra files like this:

heroku {
  includes = ["README.md"]
}

You can exclude all files except your fat-jar like this:

heroku {
  includes = ["build/libs/my-app.jar"]
  includeBuildDir = false
}

You can strip the path from the file paths (e.g. turning "foo/bar/build/foobar.tgz" into "foobar.tgz" ). This will default to project.rootDir (i.e. the root of all modules)

heroku {
  includeRootDir = project.buildDir
}

You can explicitly define the required jdk version (in system.properties)

heroku {
  jdkVersion = 11
}

You can customize the command used to run your app (in Procfile) like this:

heroku {
  processTypes(
      web: "java -jar build/libs/my-app.jar"
  )
}

Development

The heavy lifting for this plugin is done by the heroku-deploy library. The source code for that project can be found in the heroku-maven-plugin repository. If you need to update that library, do this:

$ git clone https://github.com/heroku/heroku-maven-plugin
$ cd heroku-maven-plugin/heroku-deploy
# make your changes
$ mvn clean install

Then update the heroku-deploy dependency version in the heroku-gradle build.gradle to 0.1.0 (or whatever version is specified in the heroku-deploy pom.xml). The next time you run the scripted tests it will pick up the snapshot version from your local Maven repository.