rollback.yml

name: Rollback Kubernetes Deployment

on:
  workflow_dispatch:
    inputs:
      app_env:
        description: "Select the environment"
        required: true
        default: production
        type: choice
        options:
          - production
          - staging
      revision:
        description: "Choose the Helm revision to rollback to"
        required: false

jobs:
  rollback:
    runs-on: ubuntu-latest

    steps:
      - name: Configure AWS Credentials
        uses: aws-actions/configure-aws-credentials@v4
        with:
          aws-access-key-id: ${{ secrets.AWS_ACCESS_KEY_ID }}
          aws-secret-access-key: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
          aws-region: ${{ secrets.AWS_REGION }}

      - name: Apply AWS k8s config
        run: aws eks update-kubeconfig --name ${{ vars.AWS_CLUSTER }} --region ${{ vars.AWS_REGION }}

      - name: Fetch Helm history
        run: |
          helm history ${{ vars.APP_NAME }} --namespace ${{ vars.APP_NAME }}-${{ github.event.inputs.app_env }}

      - name: Get revision number
        if: github.event.inputs.revision == ''
        run: |
          echo "No revision provided. Exiting."
          exit 1

      - name: Perform Helm rollback
        run: |
          helm rollback ${{ vars.APP_NAME }} ${{ github.event.inputs.revision }} --namespace ${{ vars.APP_NAME }}-${{ github.event.inputs.app_env }} ${{ github.event.inputs.revision }}

      - name: Verify rollback
        run: |
          kubectl -n ${{ vars.APP_NAME }}-${{ github.event.inputs.app_env }} rollout status deployment/${{ vars.APP_NAME }}-${{ github.event.inputs.app_env }}

      - name: Show Helm history
        run: |
          helm history ${{ vars.APP_NAME }} --namespace ${{ vars.APP_NAME }}-${{ github.event.inputs.app_env }}

      - name: Telegram Notify
        uses: appleboy/telegram-action@v1.0.0
        with:
          to: ${{ secrets.TELEGRAM_DEPLOY_CHAT_ID }}
          token: ${{ secrets.TELEGRAM_DEPLOY_TOKEN }}
          format: markdown
          message: |
            🔄 The deployment {{ app_env }} has been rolled back by [${{ github.actor }}](https://github.com/${{ github.actor }}) to revision ${{ github.event.inputs.revision }}.
            🏗️ [GitHub Actions Run](https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }})