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A GitHub action for reading, bumping, generating, formatting applications versions in release pipelines. Outputs three environment / output variables:

• 'env.CURRENT_VERSION' - a current, extracted version of application without any changes
• 'env.RELEASE_VERSION' - a generated release version with SNAPSHOT suffix removed by default
• 'env.NEXT_VERSION' - a new version supposed to put into version source file instead of CURRENT_VERSION
• 'env.NEXT_RELEASE_VERSION' - the same new version with SNAPSHOT suffix removed by default

Also, there are 5 postfixes for environment variables listed above:

• '_MAJOR'
• '_MINOR'
• '_PATCH'
• '_PRERELEASE'
• '_BUILDMETADATA'

They contain corresponding version fragments, so for release version 5.0.3 environment / output variable RELEASE_VERSION_PATCH will contain 3.

The action uses so-called "Semantic version" system, please check out the specification first to avoid misunderstanding and misuses.

By default, the action increments prerelease version. Basically it picks a number in a substring starting with alpha|beta|rc + a number. It also possible to notate all caps or starting with a capital letter (ALPHA, alpha and Alpha are OK).

E.G.:

• TESTNG7-BETA-7-SNAPSHOT → TESTNG7-BETA-8-SNAPSHOT
• rc1 → rc2
• TESTNG6-Alpha1 → Alpha2

Here are some prerelease fragments and a regex which is used to extract the prerelease number: https://regex101.com/r/O5GUdN/2

If there is no regex match in prerelease section the patch version fragment will be incremented. You can force action increment a specific version fragment you like by configuring Next version parameters. If any of such parameters was specified the default behavior will be ignored.

To use the action introduce it into your job steps of a github actions workflow.

A pretty simple pipeline which launches a release task. To update development version back in a release branch Gradle release plugin needs at least one parameter specified (release.newVersion). This pipeline provides gradle both necessary versions: which to release and which to commit back into the release branch.

name: Release

on:
  push:
    branches:
      - 'master'

jobs:
  build:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout repository
        uses: actions/checkout@v3

      - name: Set up JDK 1.8
        uses: actions/setup-java@v3
        with:
          distribution: 'temurin'
          java-version: '8'

      - name: Generate versions
        uses: HardNorth/github-version-generate@v1.4.0
        with:
          version-source: file
          version-file: gradle.properties
          version-file-extraction-pattern: '(?<=version=).+'

      - name: Grant execute permission for gradlew
        run: chmod +x gradlew

      - name: Release with Gradle
        id: release
        run: |
          ./gradlew release -Prelease.useAutomaticVersion=true \
          -Prelease.releaseVersion=${{ env.RELEASE_VERSION }} \
          -Prelease.newVersion=${{ env.NEXT_VERSION }}

The pipeline demonstrates how you can control which version fragment to increment by a file with a specific keyword:

name: release

on:
  push:
    branches:
      - master

env:
  VERSION_FILE_NAME: 'VERSION'
  VERSION_BUMP_FILE: 'version_fragment'
jobs:
  calculate-version:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout repository
        uses: actions/checkout@v3

      - name: Get version fragment to bump
        id: getVersionFragment
        run: |
          read -r versionFragment < ${{ env.VERSION_BUMP_FILE }}
          echo "'$versionFragment' version will be incremented"
          echo "::set-env name=VERSION_FRAGMENT::${versionFragment}"

      - name: Generate versions
        uses: HardNorth/github-version-generate@v1.4.0
        with:
          version-source: file
          version-file: ${{ env.VERSION_FILE_NAME }}
          next-version-increment-patch: ${{ contains(env.VERSION_FRAGMENT, 'patch') }}
          next-version-increment-minor: ${{ contains(env.VERSION_FRAGMENT, 'minor') }}
          next-version-increment-major: ${{ contains(env.VERSION_FRAGMENT, 'major') }}

If the content of the version_fragment file will be "minor" then minor version will be incremented respectively.

Built-in data extraction mechanism.

Example:

data-extract: true
data-extract-name: 'first_variable'
data-extract-paths: '/path/to/file'
data-extract-patterns: '/(?<=variable.name=).+/i'

There are several use cases depending on RegEx format and flags:

• RegEx Match only - As on example, above. Variable name in 'data-extract-name' parameter will be used 'as is', variable value will be set on matched text. Extraction will fail if 'data-extract-name' is not set.
• One group - Variable name in 'data-extract-name' parameter will be used 'as is', variable value will be set on group value. Extraction will fail if 'data-extract-name' is not set.
• Two or more groups - If 'data-extract-name' value is set then the first group will be used as value, and other groups will be ignored, if it's not set, then the first group will used as variable name and the second group will be used as value.
• Multiple match (multiple RegEx, 'g' flag in RegEx is set, etc) - If 'data-extract-name' value is set the action will extract all RegEx matches and export variables with underscore and variable index as suffix, except the first one. E.G.: first_variable -> FIRST_VARIABLE, FIRST_VARIABLE_1, etc; If 'data-extract-name' value is not set then two groups in every RegEx is a requirement, the first group will used as variable name and the second group will be used as value. If multiple files have the same variable names, output values will be overwritten with the latter matches.

Variable name convert rules:

• Spaces and symbols '-', even multiple in a row, will be converted to single symbol '_';
• Other special characters except digits and letters will be cut off;
• The variable name will be converted to upper case.

• The action builds using itself, check out Release pipeline.
• Report Portal uses the action to build its agents. E.G.: JUnit

Apache License Version 2.0 - repo link.

The action was created by Vadzim Hushchanskou at HardNorth/github-version-generate