.github/actions/runner-timeout/action.yml

# In the unlikely event a self-hosted runner was selected and reserved but it
# goes down before the workload starts, cancel the workflow run.
name: Detect self-hosted runner assigment timeout
description: "Cancel the workflow run if a self-hosted runner was selected, but the job failed to start"
inputs:
  unique-id:
    required: true
    description: "Unique ID of the runner"
  github_token:
    required: true
    description: "Must be able to do github API calls and cancel jobs."

runs:
  using: "composite"
  steps:
    - name: Wait a bit
      shell: bash
      run: sleep 120

    - name: Cancel if workload job is still queued
      shell: bash
      run: |
        run_url=/repos/${{ github.repository }}/actions/runs/${{ github.run_id }}
        export GH_TOKEN=${{ inputs.github_token }}
  
        if [ "$(gh api "$run_url/jobs" \
          | jq -er --arg id '${{ inputs.unique-id }}' \
            '.jobs[] | select(.name | contains("[" + $id + "]")) | .status'
        )" = queued ]; then
          echo 'Timeout waiting for runner assignment!'
          echo 'Hint: does this repo have permission to access the runner group?'
          echo 'Hint: https://github.com/organizations/servo/settings/actions/runner-groups'
          echo
          echo 'Cancelling workflow run'
          gh api "$run_url/cancel" --method POST
          exit 1
        fi