label_sync

label_sync

Update or migrate github labels on repos in a github org based on a YAML file

Configuration

A typical labels.yaml file looks like:

---
labels:
  - color: 00ff00
    name: lgtm
  - color: ff0000
    name: priority/P0
    previously:
    - color: 0000ff
      name: P0
  - name: dead-label
    color: cccccc
    deleteAfter: 2017-01-01T13:00:00Z

This will ensure that:

• there is a green lgtm label
• there is a red priority/P0 label, and previous labels should be migrated to it:
  • if a P0 label exists:
    • if priority/P0 does not, modify the existing P0 label
    • if priority/P0 exists, P0 labels will be deleted, priority/P0 labels will be added
• if there is a dead-label label, it will be deleted after 2017-01-01T13:00:00Z

Usage

# test
bazel test //label_sync/...

# add or migrate labels on all repos in the kubernetes org
bazel run //label_sync -- \
  --config $(pwd)/label_sync/labels.yaml \
  --token /path/to/github_oauth_token \
  --orgs kubernetes
  # actually you need to pass the --confirm flag too, it will
  # run in dry-run mode by default so you avoid doing something
  # too hastily, hence why this copy-pasta isn't including it

# add or migrate labels on all repos except helm in the kubernetes org
bazel run //label_sync -- \
  --config $(pwd)/label_sync/labels.yaml \
  --token /path/to/github_oauth_token \
  --orgs kubernetes \
  --skip kubernetes/helm
  # see above

# add or migrate labels on the community and steering repos in the kubernetes org
bazel run //label_sync -- \
  --config $(pwd)/label_sync/labels.yaml \
  --token /path/to/github_oauth_token \
  --only kubernetes/community,kubernetes/steering
  # see above

# generate docs and a css file contains labels styling based on labels.yaml
bazel run //label_sync -- \
  --action docs \
  --config $(pwd)/label_sync/labels.yaml \
  --docs-template $(pwd)/label_sync/labels.md.tmpl \
  --docs-output $(pwd)/label_sync/labels.md

Our Deployment

We run this as a CronJob on a kubernetes cluster managed by test-infra oncall, and can also schedule it as a Job for one-shot usage.

These pods read labels.yaml from a ConfigMap that is updated by the prow updateconfig plugin.

To update the labels.yaml file, make the desired changes to labels.yaml and run the ./hack/update-labels.sh script. Then open a pull request with the resulting labels.yaml and labels.md files.