devops-security/.github/workflows/user-bot-deploy.yml at main · hackforla/devops-security · GitHub

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name: Deploy user-bot Lambda

# Ships the user-bot Lambda's code. Terraform (terraform/user-bot.tf) owns everything
# else about the function -- runtime, role, trigger -- and ignores its code, so this
# workflow and terraform-apply.yaml never overwrite each other.
on:
  push:
    branches:
      - main
    paths:
      - 'lambda/user-bot/**'
      - '.github/workflows/user-bot-deploy.yml'
  # Recovery path: redeploy without a new commit, e.g. after a failed run. The deploy
  # role only trusts refs/heads/main, so dispatching from any other branch fails at
  # the credentials step rather than deploying unreviewed code.
  workflow_dispatch:

permissions:
  id-token: write
  contents: read

# Two merges close together must not deploy over each other out of order.
concurrency:
  group: user-bot-deploy
  cancel-in-progress: false

jobs:
  deploy:
    name: Build and deploy
    runs-on: ubuntu-latest
    defaults:
      run:
        working-directory: lambda/user-bot

    steps:
      - name: Checkout code
        uses: actions/checkout@v5

      - name: Set up Node
        uses: actions/setup-node@v7
        with:
          node-version-file: lambda/user-bot/.nvmrc
          cache: npm
          cache-dependency-path: lambda/user-bot/package-lock.json

      - name: Install dependencies
        run: npm ci

      # Run again here so that exactly what ships has passed.
      - name: Typecheck
        run: npm run typecheck

      - name: Unit tests
        run: npm test

      - name: Build and package
        run: |
          npm run build
          cd dist && zip -q ../user-bot.zip index.js

      - name: Configure AWS Credentials
        uses: aws-actions/configure-aws-credentials@v6
        with:
          role-to-assume: arn:aws:iam::035866691871:role/devops-security-user-bot-deploy
          role-session-name: userbotdeploy
          # The function lives in us-east-1 because IAM events are only delivered there.
          aws-region: us-east-1

      - name: Update function code
        run: |
          aws lambda update-function-code \
            --function-name user-bot \
            --zip-file fileb://user-bot.zip \
            --query '{CodeSha256: CodeSha256, LastUpdateStatus: LastUpdateStatus}'

      # function-updated-v2 polls GetFunction, the only read the deploy role is granted.
      - name: Wait for the update to finish
        run: aws lambda wait function-updated-v2 --function-name user-bot