autotag/README.md

Autotag

This action will auto-generate a Github tag whenever a new version is detected. The following "detection strategies" are available:

1. package: Monitor a package.json file for new versions.
2. composer: Monitor a composer.json file for new versions.
3. docker: Monitor a Dockerfile for a LABEL version=x.x.x value.
4. regex: Use a JavaScript regular expression with any file for your own custom extraction.
5. manual: Manually supply the version number (no need to specify this strategy, just specify the version).

When a version is detected, it is compared to the current list of tags in the Github repository. If a tag does not exist, it will be created.

This action works well in combination with:

• actions/create-release (Auto-release)
• author/action-publish (Auto-publish JavaScript/Node modules)
• author/action-rollback (Auto-rollback releases on failures)
• author/template-cross-runtime (a cross-runtime JavaScript repo template)

Usage

The following is an example .github/workflows/main.yml that will execute when a push to the master branch occurs.

name: Create Tag

on:
  push:
    branches:
      - master

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v2
    - uses: butlerlogic/action-autotag@stable
      env:
        GITHUB_TOKEN: "${{ secrets.GITHUB_TOKEN }}"

To make this work, the workflow must have the checkout action before the autotag action.

This order is important!

- uses: actions/checkout@v2
- uses: butlerlogic/action-autotag@stable

If the repository is not checked out first, the autotagger cannot find the package.json file.

Configuration

The GITHUB_TOKEN must be provided. Without this, it is not possible to create a new tag. Make sure the autotag action looks like the following example:

- uses: butlerlogic/action-autotag@stable
  with:
    GITHUB_TOKEN: "${{ secrets.GITHUB_TOKEN }}"

The action will automatically extract the token at runtime. DO NOT MANUALLY ENTER YOUR TOKEN. If you put the actual token in your workflow file, you'll make it accessible (in plaintext) to anyone who ever views the repository (it will be in your git history).

Optional Configurations

There are several options to customize how the tag is created.

strategy (required)

This is the strategy used to identify the version number/tag from within the code base.

1. package: Monitor a package.json for new versions. Use this for JavaScript projects based on Node modules (npm, yarn, etc).
2. composer: Same as package, but uses composer.json instead of package.json.
3. docker: Monitor a Dockerfile for a LABEL version=x.x.x value. Use this for container projects.
4. regex*: Use a JavaScript regular expression with any file for your own custom extraction.

EXCEPTION: This property is not required if the regex_pattern property is defined, because it is assumed to be "regex".

- uses: butlerlogic/action-autotag@1.0.0
  env:
    GITHUB_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
  with:
    strategy: docker

root

Formerly package_root

Depending on the selected strategy, autotagger will look for the package.json or Dockerfile file in the project root. If the file is located in a subdirectory, this option can be used to point to the correct file.

Using the package strategy:

- uses: butlerlogic/action-autotag@1.0.0
  env:
    GITHUB_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
  with:
    strategy: package # Optional, since "package" is the default strategy
    root: "/path/to/subdirectory"

The version number would be extracted from /path/to/subdirectory/package.json.

Using the docker strategy:

- uses: butlerlogic/action-autotag@1.0.0
  env:
    GITHUB_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
  with:
    strategy: docker
    root: "/path/to/subdirectory"

The version number would be extracted from /path/to/subdirectory/Dockerfile, specifically looking for the LABEL version=x.x.x line within the file.

Using the regex strategy:

- uses: butlerlogic/action-autotag@1.0.0
  env:
    GITHUB_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
  with:
    strategy: regex # Optional since regex_pattern is defined
    root: "/path/to/subdirectory/my.file"
    regex_pattern: "version=([0-9\.])"

The version will be extracted by scanning the content of /path/to/subdirectory/my.file for a string like version=1.0.0. See the regex_pattern option for more details.

regex_pattern

An optional attribute containing the regular expression used to extract the version number.

- uses: butlerlogic/action-autotag@1.0.0
  env:
    GITHUB_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
  with:
    regex_pattern: "version=([0-9\.]{5}([-\+][\w\.0-9]+)?)"

This attribute is used as the first argument of a RegExp object. The first "group" (i.e. what's in the main set of parenthesis/the whole version number) will be used as the version number. For an example, see this working example.

The pattern described in this example is a simple one used. If you need a more complex one complete pattern is:

^((0|[1-9]\d*)\.(0|[1-9]\d*)\.(0|[1-9]\d*)(?:-((?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*)(?:\.(?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*))*))?(?:\+([0-9a-zA-Z-]+(?:\.[0-9a-zA-Z-]+)*))?)$

As of 1.1.2, JavaScript named patterns are supported, where the group named version will be used to populate the tag. For example:

- uses: butlerlogic/action-autotag@1.0.0
  env:
    GITHUB_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
  with:
    regex_pattern: "(version=)(?<version>[\d+\.]{3}([-\+][\w\.0-9]+)?)"

tag_prefix

By default, semantic versioning is used, such as 1.0.0. A prefix can be used to add text before the tag name. For example, if tag_prefix is set to v, then the tag would be labeled as v1.0.0.

- uses: butlerlogic/action-autotag@1.0.0
  env:
    GITHUB_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
  with:
    tag_prefix: "v"

tag_suffix

Text can be applied to the end of the tag by setting tag_suffix. For example, if tag_suffix is (beta), the tag would be 1.0.0 (beta). Please note this example violates semantic versioning and is merely here to illustrate how to add text to the end of a tag name if you really want to.

- uses: butlerlogic/action-autotag@1.0.0
  env:
    GITHUB_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
  with:
    tag_suffix: " (beta)"

tag_message

This is the annotated commit message associated with the tag. By default, a changelog will be generated from the commits between the latest tag and the current reference (HEAD). Setting this option will override the message.

- uses: butlerlogic/action-autotag@1.0.0
  env:
    GITHUB_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
  with:
    tag_message: "Custom message goes here."

commit_message_template

By default, a changelog is generated, containing the commit messages since the last release. The message is generated by applying a commit message template to each commit's data attributes.

- uses: butlerlogic/action-autotag@1.0.0
  env:
    GITHUB_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
  with:
    commit_message_template: "({{sha}} by {{author}}) {{message}}"

Optional data points:

1. number The commit number (relevant to the overall list)
2. message The commit message.
3. author The author of the commit.
4. sha The SHA value representing the commit.

The default is {{number}}) {{message}} ({{author}})\nSHA: {{sha}}\n.

Example output:

1) Update README.md (coreybutler)
(SHA: c5e09fc45106a4b27b8f4598fb79811b589a4684)

2) Added metadoc capability to introspect the shell/commands. (coreybutler)
(SHA: b690be366a5636d51b1245a1b39c86102ddb8a81)

version

Explicitly set the version instead of using automatic detection (forces "manual" strategy).

Useful for projects where the version number may be output by a previous action.

- uses: butlerlogic/action-autotag@1.0.0
  env:
    GITHUB_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
  with:
    version: "${{ steps.previous_step.outputs.version }}"

min_version

Set the minimum version which would be used to create a tag.

The default value (0.0.1) prevents a 0.0.0 from being created. This can also be used when introducing Autotag to a repository which has already tagged.

For example, if the version 0.1.0 would already have been published, set the minVersion to the next patch to prevent a duplicate tag for that version.

- uses: butlerlogic/action-autotag@1.0.0
  with:
    GITHUB_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
    min_version: "0.1.1"

dry_run

If this value is true, the tag will not be pushed. You can check for duplicate versions when creating a pull request.

- uses: butlerlogic/action-autotag@1.0.0
  with:
    GITHUB_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
    dry_run: true

Developer Notes

If you are building an action that runs after this one, be aware this action produces several outputs:

1. tagname will be empty if no tag was created, or it will be the value of the new tag.
2. tagrequested: The name of the requested tag. This will be populated even if the tag is not created. This will usually be the same as tagname and/or version for successful executions. This output is typically used for rollbacks/notifications when the creation of a tag fails.
3. tagsha: The SHA of the new tag.
4. taguri: The URI/URL of the new tag reference.
5. tagmessage: The message applied to the tag reference (this is what shows up on the tag screen on Github).
6. tagcreated: yes or no.
7. version will be the extracted/provided version.
8. prerelease: "yes" or "no", indicating the tag represents a semantic version pre-release.
9. build: "yes" or "no", indicating the tag represents a semantic version build.

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Credits

This action was written and is primarily maintained by Corey Butler.

This project has had great contributions from these wonderful people. Additional gratitude goes to Jaliborc, who came up with the idea and original implementation for a pattern-based tag extraction (the Regex strategy).

Active Sponsors

These sponsors are helping make this project possible.

Our Ask...

If you use this or find value in it, please consider contributing in one or more of the following ways:

1. Click the "Sponsor" button at the top of the page and make a contribution.
2. Star it!
3. Tweet about it!
4. Fix an issue.
5. Add a feature (post a proposal in an issue first!).

Copyright © 2020 Butler Logic, Corey Butler, and Contributors.