ci_cd.yml

name: "CI/CD Pipeline"

on:
  push:
    paths:
      - "terraform/**"
      - ".github/workflows/**"
    branches:
      - main
  pull_request:

jobs:
  linting:
    name: "Lambda Functions (Linting)"
    runs-on: ubuntu-latest
    steps:
      - name: Check out Git repository
        uses: actions/checkout@v2

      - name: Set up Node.js
        uses: actions/setup-node@v1
        with:
          node-version: 14

      - name: "[Command Lambda Function] Install Dependencies & Run Linters"
        working-directory: terraform/command_lambda_function
        run: |
          npm ci
          npx eslint function.js

      - name: "[Query Lambda Function] Install Dependencies & Run Linters"
        working-directory: terraform/query_lambda_function
        run: |
          npm ci
          npx eslint function.js

      - name: "[Upsert Lambda Function] Install Dependencies & Run Linters"
        working-directory: terraform/upsert_lambda_function
        run: |
          npm ci
          npx eslint function.js

  unit_tests:
    name: "Lambda Functions (Unit Testing)"
    runs-on: ubuntu-latest
    steps:
      - name: Check out Git repository
        uses: actions/checkout@v2

      - name: Set up Node.js
        uses: actions/setup-node@v1
        with:
          node-version: 14

      - name: "[Command Lambda Function] Install Dependencies & Run Tests"
        working-directory: terraform/command_lambda_function
        run: |
          npm ci
          npm run test tests/

      - name: "[Query Lambda Function] Install Dependencies & Run Tests"
        working-directory: terraform/query_lambda_function
        run: |
          npm ci
          npm run test tests/

      - name: "[Upsert Lambda Function] Install Dependencies & Run Tests"
        working-directory: terraform/upsert_lambda_function
        run: |
          npm ci
          npm run test tests/

  deployment:
    needs: [linting, unit_tests]
    if: contains(github.event.head_commit.message, '[deploy]')
    name: "Deploy (Terraform -> AWS)"
    runs-on: ubuntu-latest
    outputs:
      api_base_url: ${{steps.options.outputs.api_base_url}}
      bucket_name: ${{steps.options.outputs.bucket_name}}
    steps:
      - name: Check out Git repository
        uses: actions/checkout@v3

      - name: Setup Terraform
        uses: hashicorp/setup-terraform@v1
        with:
          # terraform_version: 0.13.0:
          cli_config_credentials_token: ${{ secrets.TF_API_TOKEN }}
          terraform_wrapper: false

      - name: Terraform Format
        working-directory: terraform
        run: terraform fmt -check

      - name: Terraform Init
        working-directory: terraform
        run: terraform init

      - name: Terraform Validate
        working-directory: terraform
        run: terraform validate -no-color

      - name: Terraform Apply
        if: github.ref == 'refs/heads/main' && github.event_name == 'push'
        working-directory: terraform
        run: terraform apply -auto-approve -input=false

      - name: Set Step's Output with `api_base_url_production` value from <terraform output>
        id: api_base_url_step
        working-directory: terraform
        run: |
          api_base_url=$(terraform output -raw api_base_url_production)
          echo $api_base_url
          echo "::set-output name=value::${api_base_url}"

      - name: Set Job's Output with `api_base_url` value
        uses: actions/github-script@v5
        id: options
        with:
          script: |
            console.log('*** api_base_url:', '${{steps.api_base_url_step.outputs.value}}');
            core.setOutput('api_base_url', '${{steps.api_base_url_step.outputs.value}}');

  integration_tests:
    needs: deployment
    name: "API Testing (Integration)"
    runs-on: ubuntu-latest
    steps:
      - name: Check out Git repository
        uses: actions/checkout@v3

      - name: GET /urls Endpoint
        working-directory: terraform/query_lambda_function/tests
        run: |
          api_base_url="${{ needs.deployment.outputs.api_base_url }}"
          echo $api_base_url
          bash integration.test.sh $api_base_url

      - name: POST /urls Endpoint
        working-directory: terraform/command_lambda_function/tests
        run: |
          api_base_url="${{ needs.deployment.outputs.api_base_url }}"
          echo $api_base_url
          bash integration.test.sh $api_base_url

  load_tests:
    needs: [deployment, integration_tests]
    name: "API Testing (Load)"
    runs-on: ubuntu-latest
    container: artilleryio/artillery:latest
    steps:
      - name: Checkout repository
        uses: actions/checkout@v2

      - name: Make reports directory
        run: mkdir reports

      - name: Execute load tests for GET /urls/{code} endpoint
        env:
          TARGET: "${{ needs.deployment.outputs.api_base_url }}"
        run: /home/node/artillery/bin/run run --output reports/load_test_report_get_urls_endpoint.json terraform/query_lambda_function/tests/load_test.yaml

      - name: Generate HTML report for GET /urls endpoint
        run: /home/node/artillery/bin/run report --output reports/load_test_report_get_urls_endpoint.html reports/load_test_report_get_urls_endpoint.json

      - name: Execute load tests for POST /urls endpoint
        env:
          TARGET: "${{ needs.deployment.outputs.api_base_url }}"
        run: /home/node/artillery/bin/run run --output reports/load_test_report_post_urls_endpoint.json terraform/query_lambda_function/tests/load_test.yaml

      - name: Generate HTML report for GET /urls endpoint
        run: /home/node/artillery/bin/run report --output reports/load_test_report_post_urls_endpoint.html reports/load_test_report_post_urls_endpoint.json