Unleash Codegen Gradle Plugin

Gradle plugin for Unleash Feature Toggles code generation

Reason

1. Increase the reliability of feature toggles, the default Unleash SDK rely on strings to identify the feature toggles, which is error-prone and hard to maintain.
2. See description, tags, and other meta information directly in the code, which improves the readability of feature toggles in general.
3. It's hard to maintain stale features once using pure Strings, this plugin will help to find out the stale features and remove them from the codebase.

Notes

1. This plugin is not a replacement for the Unleash SDK, it is a code generation tool that generates the Unleash SDK code for you.
2. This plugin generates git-tracked sources, so the generation doesn't block developers that does not create new unleash features and doesn't want to export their Unleash Tokens.
3. It's suggested to use unleash-codegen together with ktlint gradle plugins (like kotlinter or ktlint-gradle), to keep the generated code clean and readable. Example configuration:

   tasks.named("generateFeatures") {
      finalizedBy("formatKotlin")
   }

Installation

You need to add the following lines to your build.gradle.kts file:

plugins { 
  id("com.superside.unleash.codegen") version "<latest version from the Gradle plugin portal>"
}

Gradle Task

Usage

gradle generateFeatures

Plugin Extension properties

Property	Default	Type	Description	Required
url	null	String	Unleash API URL	*
token	null	String	Unleash API Client Token	*
fileName	Features	String?	Name for generated features class
packageName		String?	Package name for the generated files
projects	ALL	List<String>	Unleash projects to generate Features from

Description

This task will generate a $fileName.kt file in the $packageName directory of your project. This file will contain all the feature toggles defined in your Unleash instance, filtered by $projects if set.

Extension example

unleash {
  url = "https://app.unleash-hosted.com/random/api/"
  token = System.getenv("UNLEASH_TOKEN")
  fileName = "ChatMicroserviceFeatures"
  packageName = "com.superside.chat.unleash.constants"
  projects = listOf("chat")
}

Generated Features example

Building from source

You don’t need to build from source to use unleash-codegen, but if you want to try out the latest, unleash-codegen can be built and published to your local Maven cache using the Gradle wrapper.

You also need following to:

• Kotlin 1.6.21 or higher
• Gradle 7.x or higher

./gradlew publishToMavenLocal

License

Unleash codegen gradle plugin is released under version 2.0 of the Apache License.