MWPW-148050: auto merge stage to main (#2290)

* mwpw-148050: auto merge PRs to main

* Expand condition

* Add PR feedback

* Address PR feedback

.github/workflows/helpers.js

@@ -3,6 +3,60 @@
 const owner = process.env.REPO_OWNER || ''; // example owner: adobecom
 const repo = process.env.REPO_NAME || ''; // example repo name: milo
 const auth = process.env.GH_TOKEN || ''; // https://docs.github.com/en/authentication/keeping-your-account-and-data-secure/managing-your-personal-access-tokens
+const CURRENT_YEAR = 2024;
+const RCPDates = [
+  {
+    start: new Date('2024-05-26T00:00:00-07:00'),
+    end: new Date('2024-06-01T00:00:00-07:00'),
+  },
+  {
+    start: new Date('2024-06-13T11:00:00-07:00'),
+    end: new Date('2024-06-13T14:00:00-07:00'),
+  },
+  {
+    start: new Date('2024-06-30T00:00:00-07:00'),
+    end: new Date('2024-07-06T00:00:00-07:00'),
+  },
+  {
+    start: new Date('2024-08-25T00:00:00-07:00'),
+    end: new Date('2024-08-31T00:00:00-07:00'),
+  },
+  {
+    start: new Date('2024-09-12T11:00:00-07:00'),
+    end: new Date('2024-09-12T14:00:00-07:00'),
+  },
+  {
+    start: new Date('2024-10-14T00:00:00-07:00'),
+    end: new Date('2024-11-18T17:00:00-08:00'),
+  },
+  {
+    start: new Date('2024-11-17T00:00:00-08:00'),
+    end: new Date('2024-11-30T00:00:00-08:00'),
+  },
+  {
+    start: new Date('2024-12-12T11:00:00-08:00'),
+    end: new Date('2024-12-12T14:00:00-08:00'),
+  },
+  {
+    start: new Date('2024-12-15T00:00:00-08:00'),
+    end: new Date('2025-01-02T00:00:00-08:00'),
+  },
+];
+
+const isWithinRCP = () => {
+  const now = new Date();
+  if (now.getFullYear() !== CURRENT_YEAR) {
+    console.log(`ADD NEW RCPs for ${CURRENT_YEAR + 1}`);
+    return true;
+  }
+
+  if (RCPDates.some(({ start, end }) => start <= now && now <= end)) {
+    console.log('Current date is within a RCP. Stopping execution.');
+    return true;
+  }
+
+  return false;
+};
 
 const getLocalConfigs = () => {
   if (!owner || !repo || !auth) {
@@ -12,7 +66,12 @@ Then run: node --env-file=.env .github/workflows/update-ims.js`);
 
   const { Octokit } = require('@octokit/rest');
   return {
-    github: { rest: new Octokit({ auth }) },
+    github: {
+      rest: new Octokit({ auth }),
+      repos: {
+        createDispatchEvent: () => console.log('local mock createDispatch'),
+      },
+    },
     context: {
       repo: {
         owner,
@@ -83,4 +142,5 @@ module.exports = {
   getLocalConfigs,
   slackNotification,
   pulls: { addLabels, addFiles, getChecks, getReviews },
+  isWithinRCP,
 };

.github/workflows/mark-stale-prs.yaml

@@ -1,7 +1,7 @@
-name: "Close stale pull requests"
+name: Close stale pull requests
 on:
   schedule:
-    - cron: "0 0 * * *"
+    - cron: '0 0 * * *'
   workflow_dispatch:
 
 jobs:

.github/workflows/merge-to-main.js

@@ -0,0 +1,77 @@
+const {
+  slackNotification,
+  getLocalConfigs,
+  isWithinRCP,
+  pulls: { addLabels, addFiles, getChecks, getReviews },
+} = require('./helpers.js');
+
+// Run from the root of the project for local testing: node --env-file=.env .github/workflows/merge-to-main.js
+const PR_TITLE = '[Release] Stage to Main';
+const STAGE = 'stage';
+const PROD = 'main';
+
+let github, owner, repo;
+
+const getStageToMainPR = () =>
+  github.rest.pulls
+    .list({ owner, repo, state: 'open', base: PROD, head: STAGE })
+    .then(({ data } = {}) => data.find(({ title } = {}) => title === PR_TITLE))
+    .then((pr) => pr && addLabels({ pr, github, owner, repo }));
+
+const workingHours = () => {
+  const now = new Date();
+  const day = now.getUTCDay();
+  const hour = now.getUTCHours();
+  const isSunday = day === 0;
+  const isSaturday = day === 6;
+  const isFriday = day === 5;
+  return hour >= 8 && hour <= 20 && !isFriday && !isSaturday && !isSunday;
+};
+
+const main = async (params) => {
+  github = params.github;
+  owner = params.context.repo.owner;
+  repo = params.context.repo.repo;
+
+  if (isWithinRCP()) return console.log('Stopped, within RCP period.');
+  if (!workingHours()) return console.log('Stopped, outside working hours.');
+
+  try {
+    const stageToMainPR = await getStageToMainPR();
+    const signOffs = stageToMainPR?.labels.filter((l) => l.includes('SOT'));
+    console.log(`${signOffs.length} SOT labels on PR ${stageToMainPR.number}`);
+    if (signOffs.length >= 4) {
+      console.log('Stage to Main  PR has all required labels. Merging...');
+      await github.rest.pulls.merge({
+        owner,
+        repo,
+        pull_number: stageToMainPR.number,
+        merge_method: 'merge',
+      });
+
+      await slackNotification(
+        `:rocket: Production release <${stageToMainPR.html_url}|${stageToMainPR.number}>`
+      );
+
+      await github.rest.repos.createDispatchEvent({
+        owner,
+        repo,
+        event_type: 'merge-to-stage',
+      });
+    }
+
+    console.log('Process successfully executed.');
+  } catch (error) {
+    console.error(error);
+  }
+};
+
+if (process.env.LOCAL_RUN) {
+  const { github, context } = getLocalConfigs();
+  main({
+    github,
+    context,
+  });
+}
+
+module.exports = main;

.github/workflows/merge-to-main.yaml

@@ -0,0 +1,37 @@
+name: Merge to main
+
+on:
+  pull_request:
+    types: [labeled]
+  schedule:
+    - cron: '0 9 * * *' # Run every day at 9am UTC
+  workflow_dispatch: # Allow manual trigger
+
+env:
+  MILO_RELEASE_SLACK_WH: ${{ secrets.MILO_RELEASE_SLACK_WH }}
+
+jobs:
+  merge-to-main:
+    runs-on: ubuntu-latest
+    environment: milo_pr_merge
+    # Run this when manually triggered or on a schedule
+    # Otherwise run this only on PRs that are merged from stage to main
+    if: github.repository_owner == 'adobecom' && (github.event_name == 'workflow_dispatch' || github.event_name == 'schedule' || (github.event_name == 'pull_request' && github.event.pull_request.base.ref == 'main' && github.event.pull_request.head.ref == 'stage'))
+
+    steps:
+      - uses: actions/create-github-app-token@v1.10.0
+        id: milo-pr-merge-token
+        with:
+          app-id: ${{ secrets.MILO_PR_MERGE_APP_ID }}
+          private-key: ${{ secrets.MILO_PR_MERGE_PRIVATE_KEY }}
+
+      - name: Checkout repository
+        uses: actions/checkout@v4.1.4
+
+      - name: Merge to main
+        uses: actions/github-script@v7.0.1
+        with:
+          github-token: ${{ steps.milo-pr-merge-token.outputs.token }}
+          script: |
+            const main = require('./.github/workflows/merge-to-main.js')
+            main({ github, context })

.github/workflows/merge-to-stage.js

@@ -1,6 +1,7 @@
 const {
   slackNotification,
   getLocalConfigs,
+  isWithinRCP,
   pulls: { addLabels, addFiles, getChecks, getReviews },
 } = require('./helpers.js');
 
@@ -44,45 +45,6 @@ let body = `
 - After: https://stage--milo--adobecom.hlx.live/?martech=off
 `;
 
-const RCPDates = [
-  {
-    start: new Date('2024-05-26T00:00:00-07:00'),
-    end: new Date('2024-06-01T00:00:00-07:00'),
-  },
-  {
-    start: new Date('2024-06-13T11:00:00-07:00'),
-    end: new Date('2024-06-13T14:00:00-07:00'),
-  },
-  {
-    start: new Date('2024-06-30T00:00:00-07:00'),
-    end: new Date('2024-07-06T00:00:00-07:00'),
-  },
-  {
-    start: new Date('2024-08-25T00:00:00-07:00'),
-    end: new Date('2024-08-31T00:00:00-07:00'),
-  },
-  {
-    start: new Date('2024-09-12T11:00:00-07:00'),
-    end: new Date('2024-09-12T14:00:00-07:00'),
-  },
-  {
-    start: new Date('2024-10-14T00:00:00-07:00'),
-    end: new Date('2024-11-18T17:00:00-08:00'),
-  },
-  {
-    start: new Date('2024-11-17T00:00:00-08:00'),
-    end: new Date('2024-11-30T00:00:00-08:00'),
-  },
-  {
-    start: new Date('2024-12-12T11:00:00-08:00'),
-    end: new Date('2024-12-12T14:00:00-08:00'),
-  },
-  {
-    start: new Date('2024-12-15T00:00:00-08:00'),
-    end: new Date('2025-01-02T00:00:00-08:00'),
-  },
-];
-
 const isHighPrio = (labels) => labels.includes(LABELS.highPriority);
 
 const hasFailingChecks = (checks) =>
@@ -217,18 +179,8 @@ const main = async (params) => {
   github = params.github;
   owner = params.context.repo.owner;
   repo = params.context.repo.repo;
+  if (isWithinRCP()) return console.log('Stopped, within RCP period.');
 
-  const now = new Date();
-  // We need to revisit this every year
-  if (now.getFullYear() !== 2024) {
-    throw new Error('ADD NEW RCPs');
-  }
-  for (const { start, end } of RCPDates) {
-    if (start <= now && now <= end) {
-      console.log('Current date is within a RCP. Stopping execution.');
-      return;
-    }
-  }
   try {
     const stageToMainPR = await getStageToMainPR();
     console.log('has Stage to Main PR:', !!stageToMainPR);

.github/workflows/merge-to-stage.yaml

@@ -4,6 +4,8 @@ on:
   schedule:
     - cron: '0 */4 * * *' # Run every 4 hours
   workflow_dispatch: # Allow manual trigger
+  repository_dispatch:
+    types: [merge-to-stage]
 
 env:
   MILO_RELEASE_SLACK_WH: ${{ secrets.MILO_RELEASE_SLACK_WH }}