chore(ci): add on_merge_pr workflow to notify releases

Signed-off-by: heitorlessa <[email protected]>

Author: heitorlessa

.github/scripts/constants.js

@@ -25,7 +25,7 @@ module.exports = Object.freeze({
     "LABEL_BLOCK_REASON": "need-issue",
 
     // /** @type {string} */
-    // "LABEL_PENDING_RELEASE": "pending-release",
+    "LABEL_PENDING_RELEASE": "pending-release",
 
     /** @type {string} */
     "HANDLE_MAINTAINERS_TEAM": "@awslabs/aws-lambda-powertools-net",

.github/scripts/label_related_issue.js

@@ -0,0 +1,53 @@
+const {
+  PR_AUTHOR,
+  PR_BODY,
+  PR_NUMBER,
+  IGNORE_AUTHORS,
+  LABEL_PENDING_RELEASE,
+  HANDLE_MAINTAINERS_TEAM,
+  PR_IS_MERGED,
+} = require("./constants")
+
+module.exports = async ({github, context, core}) => {
+    if (IGNORE_AUTHORS.includes(PR_AUTHOR)) {
+      return core.notice("Author in IGNORE_AUTHORS list; skipping...")
+    }
+
+    if (PR_IS_MERGED == "false") {
+      return core.notice("Only merged PRs to avoid spam; skipping")
+    }
+
+    const RELATED_ISSUE_REGEX = /Issue number:[^\d\r\n]+(?<issue>\d+)/;
+
+    const isMatch = RELATED_ISSUE_REGEX.exec(PR_BODY);
+
+    try {
+      if (!isMatch) {
+        core.setFailed(`Unable to find related issue for PR number ${PR_NUMBER}.\n\n Body details: ${PR_BODY}`);
+        return await github.rest.issues.createComment({
+          owner: context.repo.owner,
+          repo: context.repo.repo,
+          body: `${HANDLE_MAINTAINERS_TEAM} No related issues found. Please ensure '${LABEL_PENDING_RELEASE}' label is applied before releasing.`,
+          issue_number: PR_NUMBER,
+        });
+      }
+    } catch (error) {
+      core.setFailed(`Unable to create comment on PR number ${PR_NUMBER}.\n\n Error details: ${error}`);
+      throw new Error(error);
+    }
+
+    const { groups: {issue} } = isMatch
+
+    try {
+      core.info(`Auto-labeling related issue ${issue} for release`)
+      await github.rest.issues.addLabels({
+        issue_number: issue,
+        owner: context.repo.owner,
+        repo: context.repo.repo,
+        labels: [LABEL_PENDING_RELEASE]
+      })
+    } catch (error) {
+      core.setFailed(`Is this issue number (${issue}) valid? Perhaps a discussion?`);
+      throw new Error(error);
+    }
+}

.github/workflows/on_merged_pr.yml

@@ -0,0 +1,34 @@
+name: On PR merge
+
+on:
+  workflow_run:
+    workflows: ["Record PR details"]
+    types:
+      - completed
+
+jobs:
+  get_pr_details:
+    if: github.event.workflow_run.event == 'pull_request' && github.event.workflow_run.conclusion == 'success'
+    uses: ./.github/workflows/reusable_export_pr_details.yml
+    with:
+      record_pr_workflow_id: ${{ github.event.workflow_run.id }}
+    secrets:
+      token: ${{ secrets.GITHUB_TOKEN }}
+  release_label_on_merge:
+    needs: get_pr_details
+    runs-on: ubuntu-latest
+    if: needs.get_pr_details.outputs.prIsMerged == 'true'
+    steps:
+      - uses: actions/checkout@v3
+      - name: "Label PR related issue for release"
+        uses: actions/github-script@v6
+        env:
+          PR_NUMBER: ${{ needs.get_pr_details.outputs.prNumber }}
+          PR_BODY: ${{ needs.get_pr_details.outputs.prBody }}
+          PR_IS_MERGED: ${{ needs.get_pr_details.outputs.prIsMerged }}
+          PR_AUTHOR: ${{ needs.get_pr_details.outputs.prAuthor }}
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          script: |
+            const script = require('.github/scripts/label_related_issue.js')
+            await script({github, context, core})