GitHub create release step

A wercker step for creating a GitHub release. It has a few parameters, but only two are required: token and tag. See Creating a GitHub token.

This step will export the id of the release in an environment variable (default: $WERCKER_GITHUB_CREATE_RELEASE_ID). This allows other steps to use this release, like the github-upload-asset step.

Currently this step does not do any json escaping. So be careful when using quotes or newlines in parameters.

More information about GitHub releases:

• https://github.com/blog/1547-release-your-software
• https://developer.github.com/v3/repos/releases/

Example

A minimal example, this will get the token from a environment variable and use the hardcoded v1.0.0 tag:

deploy:
    steps:
        - github-create-release:
            token: $GITHUB_TOKEN
            tag: v1.0.0

It is also possible to use a environment variable as a token parameter (or any parameter actually). A fictional example which gets the version of the application from rake version, stores it in a environment variable en finally passes it along to github-create-release (for this to work, a version task needs to be created):

deploy:
    steps:
        - script:
            name: get version from rake
            code: export APP_VERSION=$(rake version)
        - github-create-release:
            token: $GITHUB_TOKEN
            tag: $APP_VERSION

Common problems

curl: (22) The requested URL returned error: 400

GitHub has rejected the call. Most likely invalid json was used. Check to see if any of the parameters need escaping (quotes and new lines).

curl: (22) The requested URL returned error: 401

The token is not valid. If using a protected environment variable, check if the token is inside the environment variable.

curl: (22) The requested URL returned error: 422

GitHub rejected the API call. Check if the tag you are using isn't in use already.

Creating a GitHub token

To be able to use this step, you will first need to create a GitHub token with an account which has enough permissions to be able to create releases. First goto Account settings, then goto Applications for the user. Here you can create a token in the Personal access tokens section. For a private repository you will need the repo scope and for a public repository you will need the public_repo scope. Then it is recommended to save this token on wercker as a protected environment variable.

What's new

• Initial release.

Options

• token The token used to make the requests to GitHub. See Creating a GitHub token.
• tag The tag name of the release. This needs to be unique for this repository. Semver versioning is recommended, but not required. (make sure this is json encoded, see TODO)
• owner (optional) The GitHub owner of the repository. Defaults to $WERCKER_GIT_OWNER, which is the GitHub owner of the original build.
• repo (optional) The name of the GitHub repository. Defaults to $WERCKER_GIT_REPOSITORY, which is the repository of the original build.
• target-commitish (optional) Specifies the commitish value that determines where the Git tag is created from. Can be any branch or commit SHA. Defaults to $WERCKER_GIT_COMMIT, which is the commit of the original build.
• title (optional) The title of the release. (make sure this is json encoded, see TODO)
• body (optional) Text describing the contents of the tag. (make sure this is json encoded, see TODO)
• draft (optional) Create a unpublished release if this is true, or create a published release if this is false. Defaults to empty, which means the default of GitHub will be used (currently this is false).
• prerelease (optional) Create a pre-release release if this is true, or create a normal release if this is false. Defaults to empty, which means the default of GitHub will be used (currently this is false).
• export-id (optional) After the release is created, a release id will be made available in the environment variable identifier in this environment variable. Defaults to WERCKER_GITHUB_CREATE_RELEASE_ID.

TODO

• Create better error handling for invalid token en existing tag.
• Escape user input to be valid json.
• Make sure export_id contains a valid environment variable identifier.
• Add check to see if the tag is not used for a release already.

License

The MIT License (MIT)

Changelog

1.0.1

• Initial release.