GODRIVER-3008 Add mongodb-drivers-comment-bot support (#361)

* Add a github app folder

* handle dir

* bootstrap node

* fix path handling

* use mjs

* debug

* debug

* use sub dir

* fix nvm dir

* update gitignore

* cleanup

* make sha an input

* cleanup

* undo debug caat

* Update .evergreen/github_app/create_or_modify_comment.mjs

Co-authored-by: Bailey Pearson <bailey.pearson@gmail.com>

* Update .evergreen/github_app/create_or_modify_comment.mjs

Co-authored-by: Bailey Pearson <bailey.pearson@gmail.com>

* Update .evergreen/github_app/create_or_modify_comment.mjs

Co-authored-by: Bailey Pearson <bailey.pearson@gmail.com>

* Add node bootstrap scripts

* cleanup for local usage

* fix handling of repo

* source the file

* enable debug print

* more debug

* fix path handling

---------

Co-authored-by: Bailey Pearson <bailey.pearson@gmail.com>

.evergreen/auth_aws/setup_secrets.sh

@@ -1,5 +1,7 @@
 #!/usr/bin/env bash
 # setup_secrets
+# See https://wiki.corp.mongodb.com/display/DRIVERS/Using+AWS+Secrets+Manager+to+Store+Testing+Secrets
+# for details on usage.
 set -eu
 
 HERE=$(dirname $0)

.evergreen/github_app/README.md

@@ -0,0 +1,11 @@
+# Supporting code for GitHub Apps
+
+## mongodb-drivers-comment-bot
+
+Use mongodb-drivers-comment-bot to create/update comments on PRs
+with the results of an EVG task. We offer a convenience script to install node, 
+fetch secrets and run the app:
+
+```bash
+bash create_or_modifiy_comment.sh -o "<repo-owner>" -n "<repo-name>" -h "<head-commit-sha>" -m "<comment-match>" -c "<path-to-comment-file>"
+```

.evergreen/github_app/create_or_modify_comment.mjs

@@ -0,0 +1,89 @@
+/**
+ * Create or modify a GitHub comment using the mongodb-drivers-comment-bot.
+ */
+import * as fs from "fs";
+import * as process from "process";
+import { program } from 'commander';
+import { App } from "octokit";
+
+const appId = process.env.GITHUB_APP_ID;
+const privateKey = process.env.GITHUB_SECRET_KEY.replace(/\\n/g, '\n');
+if (appId == '' || privateKey == '') {
+ console.error("Missing GitHub App auth information");
+ process.exit(1)
+}
+
+// Handle cli.
+program
+ .version('1.0.0', '-v, --version')
+ .usage('[OPTIONS]...')
+ .requiredOption('-o, --repo-owner <owner>', 'The owner of the repo (e.g. mongodb).')
+ .requiredOption('-n, --repo-name <name>', 'The name of the repo (e.g. mongo-go-driver).')
+ .requiredOption('-m, --body-match <string>', 'The comment body to match')
+ .requiredOption('-c, --comment-path <path>', 'The path to the comment body file')
+ .requiredOption('-h, --head-sha <sha>', 'The sha of the head commit')
+ .parse(process.argv);
+
+const options = program.opts();
+const { 
+ repoOwner: owner,
+ repoName: repo,
+ bodyMatch,
+ commentPath,
+ headSha: targetSha
+ } = options;
+const bodyText = fs.readFileSync(commentPath, { encoding: 'utf8' });
+
+// Set up the app.
+const installId = process.env['GITHUB_APP_INSTALL_ID_' + owner.toUpperCase()];
+if (installId == '') {
+ console.error(`Missing install id for ${owner}`)
+ process.exit(1)
+}
+const app = new App({ appId, privateKey });
+const octokit = await app.getInstallationOctokit(installId);
+const headers = {
+ "x-github-api-version": "2022-11-28",
+};
+
+// Find the matching pull request.
+let resp = await octokit.request("GET /repos/{owner}/{repo}/pulls?state=open&per_page=100", {
+ owner,
+ repo,
+ headers
+});
+const issue = resp.data.find(pr => pr.head.sha === targetSha);
+if (issue == null) {
+ console.error(`ERROR: Could not find matching pull request for sha ${targetSha}`)
+ process.exit(1)
+}
+const { number: issueNumber } = issue
+
+// Find a matching comment if it exists, and update it.
+resp = await octokit.request("GET /repos/{owner}/{repo}/issues/{issue_number}/comments", {
+ owner,
+ repo,
+ issue_number: issueNumber,
+ headers
+});
+const comment = resp.data.find(comment => comment.body.includes(bodyMatch));
+if (!comment) {
+ // create comment.
+ await octokit.request("POST /repos/{owner}/{repo}/issues/{issue_number}/comments", {
+ owner,
+ repo,
+ issue_number: issueNumber,
+ body: bodyText,
+ headers
+ });
+} else {
+ // update comment.
+ await octokit.request("PATCH /repos/{owner}/{repo}/issues/comments/{comment_id}", {
+ owner,
+ repo,
+ body: bodyText,
+ comment_id: comment.id,
+ headers
+ });
+
+}

.evergreen/github_app/create_or_modify_comment.sh

@@ -0,0 +1,20 @@
+#!/bin/bash
+set -o errexit # Exit the script with error if any of the commands fail
+set -x
+
+DIR="$(dirname "${BASH_SOURCE[0]}")"
+pushd $DIR
+
+# Bootstrap the secrets.
+bash $DIR/../auth_aws/setup_secrets.sh drivers/comment-bot
+source secrets-export.sh
+
+# Install node and activate it.
+bash $DIR/../install-node.sh
+source $DIR/../init-node-and-npm-env.sh
+
+# Install and run the app.
+set -x
+npm install
+node create_or_modify_comment.mjs "$@"
+popd