Paper/.github/workflows/pr_comment.yml

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# This workflow run on the completion of the
# build workflow but only does anything if the
# triggering workflow uploaded an artifact.
#
# Do note that it is then the trigger workflow that
# determines if this will update the PR text body. All
# this workflow does is check if an uploaded artifact
# exists and there is a PR tied to the previous workflow.
name: Comment on pull request
on:
workflow_run:
workflows: ['Build Paper']
types: [completed]
jobs:
pr_comment:
if: github.event.workflow_run.conclusion == 'success'
runs-on: ubuntu-latest
steps:
- uses: actions/github-script@v6
with:
# This snippet is public-domain, taken from
# https://github.com/oprypin/nightly.link/blob/master/.github/workflows/pr-comment.yml
# Modified extensively by Machine_Maker
script: |
async function updatePR(owner, repo, issue_number, purpose, body) {
const { data } = await github.rest.issues.get({owner, repo, issue_number});
core.info(JSON.stringify(data, null, 2));
const marker = `<!-- bot: ${purpose} -->`;
let new_body = data.body ? data.body.trim().split(marker)[0] : "";
if (!new_body.trim()) {
new_body += `${marker}\n${body}`
} else {
new_body += `${marker}\n---\n${body}`
}
core.info(`Updating the text body of PR #${issue_number} in ${owner}/${repo}`);
await github.rest.issues.update({owner, repo, issue_number, body: new_body});
}
const {owner, repo} = context.repo;
const run_id = ${{github.event.workflow_run.id}};
const repo_id = ${{ github.event.repository.id }};
const pull_requests = ${{ toJSON(github.event.workflow_run.pull_requests) }};
if (!pull_requests.length) {
return core.notice("This workflow doesn't have any pull requests!");
}
const pull_request = pull_requests.find((pr) => pr.base.repo.id === repo_id);
if (!pull_request) {
return core.notice("This workflow doesn't match any pull request!");
}
const artifacts = await github.paginate(github.rest.actions.listWorkflowRunArtifacts, {owner, repo, run_id});
if (!artifacts.length) {
return core.info("Skipping comment due to no artifact found");
}
const artifact = artifacts.find((art) => art.name === `paper-${pull_request.number}`);
if (!artifact) {
return core.info("Skipping comment to no matching artifact found");
}
const link = `https://nightly.link/${owner}/${repo}/actions/artifacts/${artifact.id}.zip`;
const body = `Download the paperclip jar for this pull request: [${artifact.name}.zip](${link})`;
core.info(`Adding a link to ${link}`);
await updatePR(owner, repo, pull_request.number, "paperclip-pr-build", body);