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Product Releases

Latest Releases and Labels

In the file app/_data/kong_versions.yml, every product release and its corresponding versions are listed. Ensure that the latest release for each product is marked with latest: true. This informs the platform about the release to use for generating evergreen URLs.

Labels provide flexibility in handling releases. Specifying label: unreleased on a release, alters the URL structure from /<product>/<release number>/**/ to /<product>/<label>/**/, such as /<product>/unreleased/**/. Labels are particularly useful for working on unreleased versions of products. Once a label is added to a release, the content can be edited using conditional rendering and merged it into the main branch without the need for long-standing release branches. The content will be rendered only in /<product>/<label>/.

Adding a new unreleased version

Adding a new unreleased version involves two steps:

  • Add a new release to app/_data/_kong_versions.yml with a label, e.g. label: unreleased.
  • Add the corresponding nav file, app/_data/docs_nav_<product>_<release number>.yml.
  • Gateway only: ensure plugin schemas for the new release are available.

For example, if 3.0.x is the latest KIC release, the app/_data/kong_versions.yml should look like this:

...
- release: "3.0.x"
  version: "3.0.0"
  edition: kubernetes-ingress-controller
  latest: true
...

Adding a new unreleased version (e.g., 3.1.x) labeled unreleased requires adding a new labeled release to app/_data/kong_versions.yml:

...
- release: "3.0.x"
  version: "3.0.0"
  edition: kubernetes-ingress-controller
  latest: true
- release: "3.1.x"
  version: "3.1.0"
  edition: kubernetes-ingress-controller
  label: unreleased
...

and the corresponding nav file app/_data/docs_nav_kic_3.1.x. The changes for 3.1.x will be rendered in /kubernetes-ingress-controller/unreleased/**/.

Releasing a version

When a new version is ready for release:

  • Remove the label from the release in app/_data/_kong_versions.yml
  • Add latest: true to the release and remove it from the previous one.

page.release

Every versioned product page has a release attribute available. page.release is a Liquid Drop that can be used in the templates (code here).

It has several methods available for use in the templates:

  • value: the actual release, e.g. 3.4.x.
  • label: the name of the label.
  • latest?: returns true if the release is marked as latest.
  • versions: returns a hash with the corresponding versions. For gateway, it returns the versions without the suffix, i.e. { 'ee' => '3.0.0.0', 'ce' => '3.0.0' }, for products that only have one version it returns a has with default as key, e.g. { 'default' => '2.6.x' }.
  • to_s: when page.release is interpolated, to_s gets called under the hood. It returns the release's label if it has one or the actual release value.

The only time when we can't rely on the to_s method and need to use page.release.value is when it is used as key when accessing hashes, like in the compatibility table.

Preventing a labeled version from being generated

A labeled version can be prevented from being generated using ENV variables in the following format SKIP_<product>_<label>=1. For example, for gateway it would be SKIP_GATEWAY_UNRELEASED=1.