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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@v7
env:
BRANCH_NAME: "${{ github.event.workflow_run.head_branch }}"
PR_OWNER: "${{ github.event.workflow_run.head_repository.owner.login }}"
PR_SHA: "${{ github.event.workflow_run.head_sha }}"
RUN_ID: "${{ github.event.workflow_run.id }}"
REPO_ID: "${{ github.event.repository.id }}"
EVENT_TYPE: "${{ github.event.workflow_run.event}}"
PULL_REQUESTS: "${{ toJSON(github.event.workflow_run.pull_requests) }}"
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.debug(JSON.stringify(data, null, 2));
const marker = `<!-- bot: ${purpose} -->`;
let new_body = data.body ? data.body.trim().split(marker)[0].trim() : "";
new_body += `\n${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 = `${process.env.RUN_ID}`;
const repo_id = `${process.env.REPO_ID}`;
let pulls = [];
const event_type = `${process.env.EVENT_TYPE}`;
if (event_type === "push") { // if push, it's from the same repo which means `pull_requests` is populated
pulls = JSON.parse(`${process.env.PULL_REQUESTS}`);
} else {
const pr_branch = `${process.env.BRANCH_NAME}`;
const pr_sha = `${process.env.PR_SHA}`;
const pr_owner = `${process.env.PR_OWNER}`;
const { data } = await github.rest.pulls.list({ owner, repo, head: `${pr_owner}:${pr_branch}`, state: "open" });
core.debug(JSON.stringify(data, null, 2));
pulls = data.filter((pr) => pr.head.sha === pr_sha && pr.labels.find((l) => l.name === "build-pr-jar"));
}
if (!pulls.length) {
return core.notice("This workflow doesn't have any pull requests!");
} else if (pulls.length > 1) {
core.info(JSON.stringify(pulls, null, 2));
return core.error("Found multiple matching PRs");
}
const pull_request = pulls[0];
const artifacts = await github.paginate(github.rest.actions.listWorkflowRunArtifacts, { owner, repo, run_id });
if (!artifacts.length) {
return core.info("Skipping comment due to no artifact found");
}
const artifact = artifacts.find((art) => art.name === `paper-${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);
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