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OpenStack Release Tracking

This repository is for tracking release requests for OpenStack projects. The releases are managed using groups of "deliverables", made up of individual project repositories sharing a Launchpad group and a version number history. Many deliverables will only have one constituent project.

Requesting a Release

The PTL or release liaison for a project may request a release by submitting a patch to this repository, adding the necessary release metadata to the file describing the deliverable to be released. The release team will review the request and provide feedback about the version number.

Release Approval

Releases will only be denied during periods where there are known gate issues, or when releasing will introduce unwanted instability. Releases made late in a week may be delayed until early in the next week unless there is a pressing need such as a gate failure or security issue.

Who is Responsible for the Release?

The release team is responsible for helping to clearly signal the nature of the changes in the release through good version number selection.

The project team is responsible for understanding the implications for consuming projects when a new release is made, and ensuring that releases do not break other projects. When breaks occur, the project team is responsible for taking the necessary corrective action.

Deliverable Files

For deliverable set of projects, we use one YAML file per release series to hold all of the metadata for all releases of that deliverable. For each release, we need to track:

the launchpad project name (such as oslo.config)
the series (Kilo, Liberty, etc.)
for each repository
- the name (such as openstack/oslo.config)
- the hash of the commit to be tagged
the version number to use
highlights for the release notes email (optional)

We track this metadata for the history of all releases of the deliverable, so we can render a set of release history documentation.

The file should be named based on the deliverable to be tagged, so releases for liberty from the openstack/oslo.config repository will have a file in openstack/releases called deliverables/liberty/oslo.config.yaml. Releases of the same deliverable from the stable/kilo branch will be described by deliverables/kilo/oslo.config.yaml.

Deliverables File Schema

The top level of a deliverable file is a mapping with keys:

launchpad: The slug name of the launchpad project, suitable for use in URLs.
releases: A list of the releases for the deliverable.

Each release entry is a mapping with keys:

version: The version tag for that release, to be applied to all of the member projects.
projects: A list of all of the projects making up the deliverable for that release.
highlights: An optional message to be included in the release note email announcing the release.

Each project entry is a mapping with keys:

repo: The name of the repository on git.openstack.org.
hash: The SHA1 hash for the commit to receive the version tag.

Examples

For example, one version of deliverables/liberty/oslo.config.yaml might contain:

---
launchpad: oslo.config
releases:
  - version: 1.12.0
    projects:
      - repo: openstack/oslo.config
        hash: 02a86d2eefeda5144ea8c39657aed24b8b0c9a39

and then for the subsequent release it would be updated to contain:

---
launchpad: oslo.config
releases:
  - version: 1.12.0
    projects:
      - repo: openstack/oslo.config
        hash: 02a86d2eefeda5144ea8c39657aed24b8b0c9a39
  - version: 1.12.1
    projects:
      - repo: openstack/oslo.config
        hash: 0c9113f68285f7b55ca01f0bbb5ce6cddada5023
    highlights: >
       This release includes the change to stop importing
       from the 'oslo' namespace package.

For deliverables with multiple repositories, the list of projects would contain all of them. For example, the Neutron deliverable might be described by deliverables/liberty/neutron.yaml containing:

---
launchpad: neutron
releases:
  - version: 7.0.0
    projects:
      - repo: openstack/neutron
        hash: somethingunique
      - repo: openstack/neutron-fwaas
        hash: somethingunique
      - repo: openstack/neutron-lbaas
        hash: somethingunique
      - repo: openstack/neutron-vpnaas
        hash: somethingunique

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