API Lifecycle

# API design specification template
api_specification:
  name: "User Management API"
  version: "1.0.0"
  purpose: "Manage user accounts and profiles"
  
  business_requirements:
    - "Create and manage user accounts"
    - "Support user authentication"
    - "Enable profile management"
    - "Provide user search capabilities"
  
  technical_requirements:
    performance:
      response_time: "< 200ms for 95th percentile"
      throughput: "1000 requests/second"
      availability: "99.9% uptime"
    
    security:
      authentication: "JWT tokens"
      authorization: "Role-based access control"
      encryption: "TLS 1.3 in transit, AES-256 at rest"
    
    scalability:
      horizontal_scaling: true
      load_balancing: true
      caching: "Redis-based"
  
  data_model:
    User:
      properties:
        - id: string (UUID)
        - email: string (unique)
        - name: string
        - role: enum [admin, user]
        - created_at: datetime
        - updated_at: datetime
  
  endpoints:
    - path: "/users"
      methods: [GET, POST]
      purpose: "List and create users"
    - path: "/users/{id}"
      methods: [GET, PUT, DELETE]
      purpose: "Manage individual users"

# .github/workflows/api-lifecycle.yml
name: API Lifecycle Management
 
on:
  push:
    branches: [main, develop]
  pull_request:
    branches: [main]
 
env:
  API_VERSION: {{ github.sha }}
 
jobs:
  test:
    runs-on: ubuntu-latest
    
    steps:
    - uses: actions/checkout@v3
    
    - name: Set up Python
      uses: actions/setup-python@v4
      with:
        python-version: '3.9'
    
    - name: Install dependencies
      run: |
        pip install -r requirements.txt
        pip install pytest pytest-cov
    
    - name: Run tests with coverage
      run: |
        pytest --cov=src --cov-report=xml --cov-report=html
    
    - name: Upload coverage reports
      uses: codecov/codecov-action@v3
      with:
        file: ./coverage.xml
    
    - name: Validate API specification
      run: |
        swagger-codegen validate -i openapi.yaml
 
  build:
    needs: test
    runs-on: ubuntu-latest
    
    steps:
    - uses: actions/checkout@v3
    
    - name: Build Docker image
      run: |
        docker build -t api:{{ env.API_VERSION }} .
        docker tag api:{{ env.API_VERSION }} api:latest
    
    - name: Run security scan
      uses: aquasecurity/trivy-action@master
      with:
        image-ref: 'api:{{ env.API_VERSION }}'
        format: 'sarif'
        output: 'trivy-results.sarif'
    
    - name: Upload security scan results
      uses: github/codeql-action/upload-sarif@v2
      with:
        sarif_file: 'trivy-results.sarif'
 
  deploy-staging:
    needs: build
    runs-on: ubuntu-latest
    if: github.ref == 'refs/heads/develop'
    
    steps:
    - name: Deploy to staging
      run: |
        echo "Deploying to staging environment"
        # Deployment script here
    
    - name: Run integration tests
      run: |
        pytest tests/integration/
    
    - name: Performance testing
      run: |
        docker run --rm -i loadimpact/k6 run - <tests/performance/load-test.js
 
  deploy-production:
    needs: [build, deploy-staging]
    runs-on: ubuntu-latest
    if: github.ref == 'refs/heads/main'
    
    steps:
    - name: Blue-green deployment
      run: |
        echo "Deploying to production with blue-green strategy"
        # Blue-green deployment script
    
    - name: Smoke tests
      run: |
        pytest tests/smoke/
    
    - name: Update API documentation
      run: |
        # Generate and deploy documentation
        redoc-cli build openapi.yaml --output docs/index.html

# Terraform configuration for API lifecycle infrastructure
terraform {
  required_version = ">= 1.0"
  required_providers {
    aws = {
      source  = "hashicorp/aws"
      version = "~> 5.0"
    }
  }
}
 
resource "aws_api_gateway_rest_api" "user_api" {
  name        = "user-management-api"
  description = "User Management API - Lifecycle Managed"
  
  endpoint_configuration {
    types = ["REGIONAL"]
  }
  
  lifecycle {
    create_before_destroy = true
  }
  
  tags = {
    Environment = var.environment
    Version     = var.api_version
    Lifecycle   = "managed"
  }
}
 
resource "aws_api_gateway_deployment" "api_deployment" {
  depends_on = [aws_api_gateway_rest_api.user_api]
  
  rest_api_id = aws_api_gateway_rest_api.user_api.id
  stage_name  = var.environment
  
  lifecycle {
    create_before_destroy = true
  }
  
  variables = {
    deployed_at = timestamp()
    version     = var.api_version
  }
}
 
# Auto-scaling for different lifecycle phases
resource "aws_autoscaling_group" "api_servers" {
  name                = "api-servers-{var.environment}"
  vpc_zone_identifier = var.subnet_ids
  target_group_arns   = [aws_lb_target_group.api_tg.arn]
  health_check_type   = "ELB"
  
  min_size         = var.environment == "production" ? 3 : 1
  max_size         = var.environment == "production" ? 10 : 3
  desired_capacity = var.environment == "production" ? 3 : 1
  
  tag {
    key                 = "Name"
    value               = "api-server-{var.environment}"
    propagate_at_launch = true
  }
  
  tag {
    key                 = "Lifecycle"
    value               = var.environment
    propagate_at_launch = true
  }
}