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JuliaRegistries / TagBot

Creates tags, releases, and changelogs for your Julia packages when they're registered

Home Page:https://github.com/marketplace/actions/julia-tagbot

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Julia TagBot

TagBot creates tags, releases, and changelogs for your Julia packages when they're registered.

When we talk about tags and releases, we mean Git tags and GitHub releases, and not releases in a registry that allow the Julia package manager to install your package. TagBot does not register your package for you, see the documentation in General and Registrator for that. Instead, it reacts to versions of your packages that have been registered, making TagBot a set-and-forget solution to keep your repository in sync with your package releases. Tags and releases aren't at all necessary, but it's considered a good practice.

Other benefits of using TagBot include the ability for you and your users to browse package code at specific releases, and automatically-generated changelogs for each release that keep your users in the loop.

Setup

Create a file at .github/workflows/TagBot.yml with the following contents:

name: TagBot
on:
  issue_comment:
    types:
      - created
  workflow_dispatch:
    inputs:
      lookback:
        default: "3"
permissions:
  actions: read
  checks: read
  contents: write
  deployments: read
  issues: read
  discussions: read
  packages: read
  pages: read
  pull-requests: read
  repository-projects: read
  security-events: read
  statuses: read
jobs:
  TagBot:
    if: github.event_name == 'workflow_dispatch' || github.actor == 'JuliaTagBot'
    runs-on: ubuntu-latest
    steps:
      - uses: JuliaRegistries/TagBot@v1
        with:
          token: ${{ secrets.GITHUB_TOKEN }}
          # Edit the following line to reflect the actual name of the GitHub Secret containing your private key
          ssh: ${{ secrets.DOCUMENTER_KEY }}
          # ssh: ${{ secrets.NAME_OF_MY_SSH_PRIVATE_KEY_SECRET }}

Check that workflows have the correct permissions on your repo.

Workflow permissions

Note

No further action should be required on your part, but if TagBot fails and you see 403: Resource not accessible by integration errors, try adding (or refreshing) an SSH key with the correct permissions. See the SSH Deploy Keys section below.

When you add a new release to a registry with Registrator, TagBot will create a GitHub release on your package's repository.

You may, however, want to customize the behaviour via the available configuration options.

For example, if you use GitHub Actions to build the documentation for your package, you will find that with the default TagBot configuration, your documentation build is not triggered when a new tag is created. In this case, you will need to use SSH Deploy Keys.

Read on for a full description of all of the available configuration options.

Table of Contents

Basic Configuration Options

SSH Deploy Keys

Sometimes, instead of using the default secrets.GITHUB_TOKEN, it is better to use an SSH deploy key. The most notable reason is that the default token does not have permission to trigger events for other GitHub Actions, such as documentation builds for new tags.

To use an SSH deploy key:

  • Create an SSH key and add it to your repository by following the instructions here. Make sure to give it write permissions.
  • Create a repository secret by following the instructions here. Use whatever you like as the name, such as SSH_KEY. Use the private key contents as the value.
  • Add the ssh input:
with:
  token: ${{ secrets.GITHUB_TOKEN }}
  ssh: ${{ secrets.SSH_KEY }}

If you already have a Base64-encoded deploy key and matching repository secret for Documenter, you can reuse it instead of creating a new one.

If your key is password-protected, you'll also need to include the password in another repository secret (not Base64-encoded):

with:
  token: ${{ secrets.GITHUB_TOKEN }}
  ssh: ${{ secrets.SSH_KEY }}
  ssh_password: ${{ secrets.SSH_PASSWORD }}

Changelogs

TagBot creates a changelog for each release based on the issues that have been closed and the pull requests that have been merged. Additionally, you can write custom release notes in the same place that you register your packages. See Registrator or PkgDev for specifics.

The changelog is completely customizable with the Jinja templating engine. To supply your own template, use the changelog input:

with:
  token: ${{ secrets.GITHUB_TOKEN }}
  changelog: |
    This is release {{ version }} of {{ package }}.
    {% if custom %}
    Here are my release notes!
    {{ custom }}
    {% endif %}

The data available to you looks like this:

{
  "compare_url": "https://github.com/Owner/Repo/compare/previous_version...current_version (or null for first release)",
  "custom": "your custom release notes",
  "issues": [
    {
      "author": {
        "name": "Real Name",
        "url": "https://github.com/username",
        "username": "their login"
      },
      "body": "issue body",
      "labels": ["label1", "label2"],
      "closer": {"same format as": "issue author but sometimes null"},
      "number": 123,
      "title": "issue title",
      "url": "https://github.com/Owner/Repo/issues/123"
    }
  ],
  "package": "PackageName",
  "previous_release": "v1.1.2 (or null for first release)",
  "pulls": [
    {
      "author": {"same format as": "issue author"},
      "body": "pull request body",
      "labels": ["label1", "label2"],
      "merger": {"same format as": "issue author"},
      "number": 123,
      "title": "pull request title",
      "url": "https://github.com/Owner/Repo/pull/123"
    }
  ],
  "sha": "commit SHA",
  "version": "v1.2.3",
  "version_url": "https://github.com/Owner/Repo/tree/v1.2.3"
}

You can see the default template in action.yml.

Issues and pull requests with specified labels are not included in the changelog data. By default, the following labels are ignored:

  • changelog skip
  • duplicate
  • exclude from changelog
  • invalid
  • no changelog
  • question
  • wont fix

To supply your own labels, use the changelog_ignore input:

with:
  token: ${{ secrets.GITHUB_TOKEN }}
  changelog_ignore: ignore this label, ignore this label too

White-space, case, dashes, and underscores are ignored when comparing labels.

Custom Registries

If you're using a custom registry, add the registry input:

with:
  token: ${{ secrets.GITHUB_TOKEN }}
  registry: MyOrg/MyRegistry

If your registry is public, this is all you need to do. If your registry is private, you'll need to configure access to it via one of two options.

The first option is to change the token input to a PAT that has access to both your package repository and the registry. Take a look at the warnings about PATs if you choose this option.

The other option is to use the registry_ssh input, like so:

with:
  token: ${{ secrets.GITHUB_TOKEN }}
  registry: MyOrg/MyRegistry
  registry_ssh: ${{ secrets.REGISTRY_SSH_KEY }}

Here, the REGISTRY_SSH_KEY is the private key portion of a read-only SSH deploy key for your registry. By using this method, the only extra access that TagBot receives is read access to your private registry, not to any other repositories in your user/organization account.

Advanced Configuration Options

Self-Hosted GitHub

If your company is running their own GitHub server, then you'll need to update the relevant GitHub URL inputs, github and github_api:

with:
  github: git.corp.com
  github_api: api.git.corp.com

Git Configuration

By default, the Git tags that TagBot creates are authored by a user called github-actions[bot], whose email is 41898282+github-actions[bot]@users.noreply.github.com. If you want to use your own Git author info, you can set the user and email inputs:

with:
  token: ${{ secrets.GITHUB_TOKEN }}
  user: My Name
  email: my.email@web.site

Draft Releases

If you'd prefer to create a draft GitHub release instead of a full Git tag + GitHub release, use the draft input:

with:
  token: ${{ secrets.GITHUB_TOKEN }}
  draft: true

GPG Signing

If you want to create signed tags, you can supply your own GPG private key. Your key can be exported with gpg --export-secret-keys --armor <ID>, and optionally Base64-encoded. Create the repository secret, then use the gpg input:

with:
  token: ${{ secrets.GITHUB_TOKEN }}
  gpg: ${{ secrets.GPG_KEY }}

If your key is password-protected, you'll also need to include the password in another repository secret (not Base64-encoded):

with:
  token: ${{ secrets.GITHUB_TOKEN }}
  gpg: ${{ secrets.GPG_KEY }}
  gpg_password: ${{ secrets.GPG_PASSWORD }}

It's also recommended to set your Git email address to one that is attached to the GPG key (see Git Configuration). If you fail to do so, your tags will be marked "Unverified" in the GitHub UI.

Lookback Period

By default, TagBot checks for new releases that are at most 3 days old. Therefore, if you only run TagBot every five days, it might miss some releases. To fix this, you can specify a custom number of days to look back in time with the lookback input:

with:
  token: ${{ secrets.GITHUB_TOKEN }}
  lookback: 14

An extra hour is always added, so if you run TagBot every 5 days, you can safely set this input to 5.

Personal Access Tokens (PATs)

We highly recommend that you use an SSH deploy key instead of a personal access token (PAT).

Please keep in mind that there are security concerns with using a PAT. For example, a PAT has access to all of your repositories. To reduce the consequences of a secret being leaked, we recommend that you instead use an SSH deploy key that only has permissions for a single repository.

To use a PAT:

  • Create a PAT by following the instructions here. Make sure that it has the repo scope.
  • Create a repository secret by following the instructions here. Use whatever you like as the name, such as TAGBOT_PAT. Use the new PAT as the value.
  • Replace the token input's value with the name of your secret, like so:
with:
  token: ${{ secrets.TAGBOT_PAT }}

Pre-Release Hooks

If you want to make something happen just before releases are created, you can do so with the dispatch input:

with:
  token: ${{ secrets.TAGBOT_PAT }}
  dispatch: true

When you enable this option, a repository dispatch event is created before releases are created. This means that you can set up your own actions that perform any necessary pre-release tasks.

The payload is an object mapping from version to commit SHA, which can contain multiple entries and looks like this:

{
  "v1.2.3": "abcdef0123456789abcdef0123456789abcdef01"
}

These actions will have 5 minutes to run by default, but you can customize the number of minutes with the dispatch_delay input:

with:
  token: ${{ secrets.TAGBOT_PAT }}
  dispatch: true
  dispatch_delay: 30

Avoid setting a delay longer than the interval between TagBot runs, since your dispatch event will probably be triggered multiple times and the same release will also be attempted more than once.

To use the dispatch feature, you must provide your own personal access token. For more details, see Personal Access Tokens (PATs).

Release Branch Selection

If you use a non-standard Git workflow where your default branch is not the main development branch, you may want to set the branch input to the name of your preferred release branch:

with:
  token: ${{ secrets.GITHUB_TOKEN }}
  branch: release

The branch you set will be the first one searched for a commit to tag, and releases will be anchored to that branch when possible.

Release Branch Management

If you're using PkgDev to release your packages, TagBot can manage the merging and deletion of the release branches that it creates. To enable this feature, use the branches input:

with:
  token: ${{ secrets.GITHUB_TOKEN }}
  branches: true

Subpackage Configuration

If your package is not at the top-level of your repository, you should set the subdir input:

with:
  token: ${{ secrets.GITHUB_TOKEN }}
  subdir: path/to/SubpackageName.jl

Version tags will then be prefixed with the subpackage's name: {PACKAGE}-v{VERSION}, e.g., SubpackageName-v0.2.3. (For top-level packages, the default tag is simply v{VERSION}.)

Note: Using TagBot with a non-empty subdir will only work for Julia package versions registered using the official Registrator (see also #281 and #282).

To tag releases from a monorepo containing multiple subpackages and an optional top-level package, set up a separate step for each package you want to tag. For example, to tag all three packages in the following repository,

.
├── SubpackageA.jl
│   ├── Package.toml
│   └── src/...
├── path
│   └── to
│       └── SubpackageB.jl
│           ├── Package.toml
│           └── src/...
├── Package.toml
└── src/...

the action configuration should look something like

    steps:
      - name: Tag top-level package
        uses: JuliaRegistries/TagBot@v1
        with:
          token: ${{ secrets.GITHUB_TOKEN }}
          # Edit the following line to reflect the actual name of the GitHub Secret containing your private key
          ssh: ${{ secrets.DOCUMENTER_KEY }}
          # ssh: ${{ secrets.NAME_OF_MY_SSH_PRIVATE_KEY_SECRET }}
      - name: Tag subpackage A
        uses: JuliaRegistries/TagBot@v1
        with:
          token: ${{ secrets.GITHUB_TOKEN }}
          # Edit the following line to reflect the actual name of the GitHub Secret containing your private key
          ssh: ${{ secrets.DOCUMENTER_KEY }}
          # ssh: ${{ secrets.NAME_OF_MY_SSH_PRIVATE_KEY_SECRET }}
          subdir: SubpackageA.jl
      - name: Tag subpackage B
        uses: JuliaRegistries/TagBot@v1
        with:
          token: ${{ secrets.GITHUB_TOKEN }}
          # Edit the following line to reflect the actual name of the GitHub Secret containing your private key
          ssh: ${{ secrets.DOCUMENTER_KEY }}
          # ssh: ${{ secrets.NAME_OF_MY_SSH_PRIVATE_KEY_SECRET }}
          subdir: path/to/SubpackageB.jl

Generated tags will then be v0.1.2 (top-level), SubpackageA-v0.0.3, and SubpackageB-v2.3.1. As an alternative to the automatic tag prefixing, you can manually specify a different tag prefix as an input:

    steps:
      - name: Tag subpackage A
        uses: JuliaRegistries/TagBot@v1
        with:
          token: ${{ secrets.GITHUB_TOKEN }}
          # Edit the following line to reflect the actual name of the GitHub Secret containing your private key
          ssh: ${{ secrets.DOCUMENTER_KEY }}
          # ssh: ${{ secrets.NAME_OF_MY_SSH_PRIVATE_KEY_SECRET }}
          subdir: SubpackageA.jl
          tag_prefix: MyOwnTagPrefix

In this case, the tag for SubpackageA.jl will be MyOwnTagPrefix-v0.0.3.

If you want to disable tag prefixes for subdirectory packages altogether, you can set the tag_prefix to NO_PREFIX. Note that this is only recommended if you only have a single Julia package in the repository.

ℹ️ Monorepo-specific changelog behavior

Each subpackage will include all issues and pull requests in its changelogs, such that a single issue will be duplicated up in all of the repository's subpackages' release notes. Careful changelog_ignore and/or custom changelog settings on a per-subpackage basis can mitigate this duplication.

Local Usage

There are some scenarios in which you want to manually run TagBot. Perhaps TagBot failed for some reason, or GitHub's service was down, or you just set up TagBot but would like to fill in tags for old releases. The simplest way to run TagBot manually is through Docker and the tagbot.local module.

$ docker run --rm ghcr.io/juliaregistries/tagbot python -m tagbot.local --help
Usage: __main__.py [OPTIONS]

Options:
  --repo TEXT        Repo to tag
  --version TEXT     Version to tag
  --token TEXT       GitHub API token
  --github TEXT      GitHub URL
  --github-api TEXT  GitHub API URL
  --changelog TEXT   Changelog template
  --registry TEXT    Registry to search
  --subdir TEXT      Subdirectory path in repo
  --tag-prefix TEXT  Prefix for version tag
  --help             Show this message and exit.

$ docker run --rm ghcr.io/juliaregistries/tagbot python -m tagbot.local \
    --repo Owner/Name \
    --token <TOKEN> \
    --version v1.2.3

Only the repo, version, and token options are required, and you will be prompted if you don't provide them. For instructions on how to obtain a token, see Personal Access Tokens (PATs).

You can also run the code outside of Docker, but you'll just need to install Poetry first, and ensure that you have Python 3.8.

$ git clone https://github.com/JuliaRegistries/TagBot  # Consider --branch vA.B.C
$ cd TagBot
$ poetry install
$ poetry run python -m tagbot.local --help

Troubleshooting tips

I am seeing some kind of permissions error

  • Check that your configuration matches the one shown in Setup, especially the permissions block
  • Try using an ssh deploy key even if you aren't using Documenter or otherwise need to trigger workflows from TagBot-generated tags

I am missing old tags

If you have missed tags due to now-fixed errors, you can manually trigger TagBot with a longer "lookback" period (days) in order to try to find them (assuming your workflow has been configured as shown in Setup with a workflow_dispatch trigger). See the Github docs for more on manually running workflows.

About

Creates tags, releases, and changelogs for your Julia packages when they're registered

https://github.com/marketplace/actions/julia-tagbot

License:MIT License

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