gradle-release-plugin

Gradle plugin providing very minimal release version numbering.

The plugin assumes a MAJOR.MINOR.PATCH[-SNAPSHOT] version pattern kept in a version.txt file.

It provides the following functionality:

• Initializes project.version from version.txt
• Offers tasks for different release strategies:
  • release - Creates a tagged non-SNAPSHOT release (using the current version as specified in the version.txt file)
  • releaseMajorVersion - Upgrades to next major version & creates a tagged non-SNAPSHOT release.
  • releaseMinorVersion - Upgrades to next minor version & creates a tagged non-SNAPSHOT release.
• Prepares version.txt for next SNAPSHOT iteration (i.e. bumps PATCH portion)

Usage

IMPORTANT: In multi-module builds, these steps should only be performed on the root project

1. Create a version.txt (with e.g. 0.1.0-SNAPSHOT) right next to your build script
2. Apply the plugin in your build script (see below)
3. Call gradle clean release

Applying the plugin

The plugin is hosted on Bintray and can be applied as follows:

New plugin mechanism (as of Gradle 2.1):

plugins {

id 'ch.netzwerg.release' version 'x.y.z' 
}

Older Gradle versions:

buildscript {

repositories {

  jcenter()

}

dependencies {

  classpath 'ch.netzwerg:gradle-release-plugin:x.y.z'

}
 
}
 apply plugin: 'ch.netzwerg.release'

Details

During the application phase, the plugin initializes the project.version according to the contents of a version.txt file (e.g. 1.2.3-SNAPSHOT).

During the configuration phase, the plugin checks if any of the releaseXXX tasks is called explicitly. It then upgrades the project.version and version.txt contents according to the following strategies:

• Task release: Remove -SNAPSHOT from current version (e.g. 1.2.3)
• Task releaseMajorVersion: Upgrade to next major version (e.g. 2.0.0)
• Task releaseMinorVersion: Upgrade to next minor version (e.g. 1.3.0)

During the execution phase, the releaseXXX tasks tag the Git repository and prepare the version.txt contents for the next SNAPSHOT iteration. The tasks perform the following steps:

• Commit modified version.txt
• Tag Git repo (e.g. v1.2.3)
• Increment version number in version.txt to next SNAPSHOT (e.g. 1.2.4-SNAPSHOT)
• Again commit modified version.txt
• Optionally push changes to Git remote (works from any branch)

Note that all releaseXXX tasks run non-interactively and are thus well suited for continuous integration.

Configuration

This plugin follows a "no surprise" policy. Consequently, no configuration is needed in the majority of cases. The following snippet illustrates all configuration options, their default values, and possible alternatives:

release {

dependsOn build // 'distZip' could e.g be used in combination with the 'application' plugin
push = false // 'true' would e.g. be useful when triggering the release task on a CI server
versionSuffix = '-SNAPSHOT' // '.DEV' or '' (empty) could be useful alternatives
tagPrefix = 'v' // 'r' or '' (empty) could be useful alternatives 
}

Note: In multi-projects scenarios, the root project usually does not have a build task. Consequently, the release task will fail with its current default settings. Please use release.dependsOn subprojects.build ( after the subprojects block) to work around this issue.

Read-Only Properties

Use project.release.versionFile to e.g. include the version.txt file in your final release bundle. The Git release tag can be accessed via project.release.tagName.

Acknowledgements

• etiennestuder (underlying plugindev)
• RichardGottschalk ( PR #16)

License

This plugin is available under the Apache License, Version 2.0.

© by Rahel Lüthy