pr-cancel.yml

name: Cancel PR Workflows on Close

on:
  pull_request:
    types: [ closed ]

permissions:
  actions: write

jobs:
  cancel:
    name: Cancel In-Progress Workflows
    if: github.event.pull_request.merged == false
    runs-on: ubuntu-latest
    steps:
      - name: Cancel PR Build and Integration Tests
        uses: actions/github-script@v8
        with:
          script: |
            const workflows = [
              'pr-build.yml',
              'codeql.yml',
              'integration-test-single-node.yml',
              'integration-test-multinode.yml',
            ];
            const headSha = context.payload.pull_request.head.sha;
            const prNumber = context.payload.pull_request.number;

            for (const workflowId of workflows) {
              // Wrap each workflow iteration so a missing / renamed file
              // doesn't take down the whole cancel job — other workflows
              // in the list still get processed.
              try {
                for (const status of ['in_progress', 'queued']) {
                  const runs = await github.paginate(
                    github.rest.actions.listWorkflowRuns,
                    {
                      owner: context.repo.owner,
                      repo: context.repo.repo,
                      workflow_id: workflowId,
                      status,
                      event: 'pull_request',
                      per_page: 100,
                    },
                    (response) => response.data.workflow_runs
                  );

                  for (const run of runs) {
                    if (!run) {
                      continue;
                    }
                    const prs = Array.isArray(run.pull_requests) ? run.pull_requests : [];
                    const isTargetPr = prs.length === 0 || prs.some((pr) => pr.number === prNumber);
                    if (run.head_sha === headSha && isTargetPr) {
                      await github.rest.actions.cancelWorkflowRun({
                        owner: context.repo.owner,
                        repo: context.repo.repo,
                        run_id: run.id,
                      });
                      console.log(`Cancelled ${workflowId} run #${run.id} (${status})`);
                    }
                  }
                }
              } catch (err) {
                console.log(`Skipping ${workflowId}: ${err.message}`);
              }
            }