GitHub Actionsの実行結果をSlackに連携してみた

display_information:
  name: github-actions-webhook
features:
  bot_user:     
    display_name: "GitHub Actions Bot"
oauth_config:
  scopes:
    bot:
      - incoming-webhook

import * as cdk from 'aws-cdk-lib';
import { Construct } from 'constructs';
import * as s3 from 'aws-cdk-lib/aws-s3';

export class GithubActionsSlackIntegrationStack extends cdk.Stack {
  constructor(scope: Construct, id: string, props?: cdk.StackProps) {
    super(scope, id, props);

    const s3Bucket = new s3.Bucket(this, 'S3Bucket', {
      publicReadAccess: false,
      removalPolicy: cdk.RemovalPolicy.DESTROY,
      bucketName: "github-actions-slack-integration-bucket-20241219",
    });
  }
}

name: "GitHub Actions Notifications"

on:
  push:
    branches:
      - develop
      - main
  workflow_dispatch:

defaults:
  run:
    shell: bash

permissions:
  id-token: write
  contents: read

jobs:
  deploy-cdk:
    runs-on: ubuntu-latest
    timeout-minutes: 15
    steps:
      - name: Checkout repository code
        uses: actions/checkout@v4

      - name: Configure AWS credentials
        uses: aws-actions/configure-aws-credentials@v4
        with:
          role-to-assume: ${{ secrets.AWS_IAM_ROLE_ARN }}
          aws-region: ap-northeast-1

      - name: Setup Node.js
        uses: actions/setup-node@v4
        with:
          node-version: "20"

      - name: Setup dependencies for CDK
        run: npm ci

      - name: Bootstrap CDK
        run: npx cdk bootstrap

      - name: Build CDK
        run: npm run build

      - name: CDK Diff Check
        run: npx cdk diff

      - name: CDK Deploy
        run: npx cdk deploy --require-approval never --all
        # run: npx cdk deploy --require-approval always 失敗用コマンド

      - name: Notify Slack
        if: always()
        uses: slackapi/slack-github-action@v2.0.0
        env:
          STATUS_ICON: ${{ job.status == 'success' && ':white_check_mark:' || ':x:' }}
          STATUS_TEXT: ${{ job.status == 'success' && '成功' || '失敗' }}
          DEPLOY_STATUS: ${{ job.status == 'success' && 'CDKデプロイが完了しました！' || 'CDKデプロイに失敗しました。' }}
          COMMIT_URL: ${{ github.event.pull_request.html_url || github.event.head_commit.url }}
        with:
          webhook: ${{ secrets.SLACK_INCOMING_WEBHOOK_URL }}
          webhook-type: incoming-webhook
          payload: |
            {
              "text": "${{ env.STATUS_ICON }} *${{ env.STATUS_TEXT }}*: ${{ env.DEPLOY_STATUS }}",
              "blocks": [
                {
                  "type": "section",
                  "text": {
                    "type": "mrkdwn",
                    "text": "${{ env.STATUS_ICON }} *${{ env.STATUS_TEXT }}*: ${{ env.DEPLOY_STATUS }}\n*実行者*: ${{ github.actor }}\n*ブランチ*: ${{ github.ref_name }}\n*コミットメッセージ*: ${{ github.event.head_commit.message }}"
                  }
                },
                {
                  "type": "context",
                  "elements": [
                    {
                      "type": "mrkdwn",
                      "text": "<${{ env.COMMIT_URL }}|詳細を確認する>"
                    }
                  ]
                }
              ]
            }