Idiomatic Gradle Plugins
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Idiomatic Gradle Plugins

25 Recipes for Authors

About the Book

A key consideration when writing a plugin is aesthetics and readability. The DSL must read like a description,not appear to be someone writing a Groovy program. This leads to easier adoption of both the plugin and Gradle in general as a build tool. This form of expressiveness sometimes referred to a being `gradlesque`, is key to producing a good plugin. All of the idioms in this book are presented in Groovy. Although it is possible to write plugins in other JVM languages, Groovy providesthe easiest and most readable medium for implementing plugins. This book also assumes a minimum Gradle version of 2.0 and that the reader can program in Groovy. All examples in the book have been tested with all major Gradle releases from 2.0 through to the latest 4.x release.

About the Author

Schalk Cronjé
Schalk Cronjé

Schalk Cronjé is an international product delivery coach. With his A-skill profile he brings an unique user-centric approach to software delivery at both a business and technical levels. e is well known and very active in the Gradle and Groovy communities. He has authored or contributed to a number of Gradle plugins. He is also the author of the well known Groovy VFS library. He also serves on the international steering committee of the Agile Testing Alliance.

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Table of Contents

    • Preface
  • Getting Started
    • Basic Build Script
    • Build for Wide Gradle Compatibility
    • Avoiding Groovy Version Mismatch
    • Maintain JDK Compatibility
    • Change transitive dependency of plugin
  • Testing Plugins
    • Disable Network Tests When Offline
    • Compatibility Testing
  • Expressive Task Configuration
    • Expressive Single File
    • Collection of Files
    • Collection of Strings
    • Property Maps
    • Advanced Property Maps
    • Include Files Using Patterns
  • Plugin Dependencies
    • Allow user to override specific version of underlying in-process library
    • Default Repositories
  • Working with SourceSets
    • Add Generated Files to Existing JVM Sourceset
    • Add Source Set for Existing JVM Language
  • Adding New JVM Languages
    • Add SourceSet Support for JVM Language
    • Add Assemble Task Support for JVM Language
    • Add Source Layout Conventions for JVM Language
    • Add Documentation Task for JVM Language
  • Miscellaneous
    • Create Safe Filenames From Inputs
    • Honour Offline
    • Self-referencing plugin
    • Operating System
    • Bibliography

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