Skip to main content

OpenAPI/Swagger Documentation - Implementation Summary

Date: November 30, 2025 Version: 1.0.0 Status: Complete ✅

Overview​

Comprehensive OpenAPI 3.0 documentation has been implemented for the CODITECT License Management API using drf-spectacular. All three main license endpoints are fully documented with interactive examples, authentication schemas, and error responses.

What Was Implemented​

1. Enhanced API Views with @extend_schema Decorators​

File: api/v1/views/license.py

All three license management endpoints enhanced with comprehensive drf-spectacular decorators:

LicenseAcquireView (POST /api/v1/licenses/acquire)​

  • Summary: Acquire a license seat
  • Description: Atomic seat acquisition with Redis Lua scripts and Cloud KMS signing
  • Request Schema: LicenseAcquireSerializer
  • Success Response (201): Full session with signed license payload
  • Existing Session (200): Returns active session if already exists
  • Error Responses: 400, 401, 409, 503, 500
  • Examples: 2 success scenarios, 5 error scenarios

Key Features Documented:

  • Atomic Redis seat counting
  • Cloud KMS RSA-4096 signatures
  • SOC 2 audit logging
  • Idempotent behavior for existing sessions

LicenseHeartbeatView (PATCH /api/v1/licenses/sessions/{id}/heartbeat)​

  • Summary: Update session heartbeat
  • Description: Extend session TTL (must call every 6 minutes)
  • Path Parameter: session_id (UUID)
  • Request Schema: LicenseHeartbeatSerializer (empty body)
  • Success Response (200): Updated heartbeat timestamp
  • Error Responses: 400, 401, 404, 410, 503, 500
  • Examples: 1 success, 6 error scenarios

Key Features Documented:

  • 6-minute timeout mechanism
  • Redis TTL extension
  • Session expiration (410 Gone)

LicenseReleaseView (DELETE /api/v1/licenses/sessions/{id})​

  • Summary: Release a license seat
  • Description: End session and free seat atomically
  • Path Parameter: session_id (UUID)
  • Success Response (200): Release confirmation with ended_at timestamp
  • Error Responses: 401, 404, 503, 500
  • Examples: 2 success (including idempotent), 4 error scenarios

Key Features Documented:

  • Atomic seat release
  • Idempotent behavior
  • Session duration tracking
  • Audit log creation

2. Enhanced Serializers with Examples​

File: api/v1/serializers/license.py

All serializers enhanced with:

LicenseSerializer​

  • Docstring: Complete example JSON
  • Computed Fields: active_sessions_count, available_seats
  • Field Decorators: @extend_schema_field(OpenApiTypes.INT)
  • Example: 12 fields with realistic data

LicenseSessionSerializer​

  • Docstring: Complete example JSON with all fields
  • Computed Field: duration (seconds)
  • Field Decorator: @extend_schema_field for duration
  • Example: 13 fields including signed license payload

LicenseAcquireSerializer​

  • Docstring: Request example
  • Field Descriptions: help_text for all fields
  • Fields:
    • license_key (required)
    • hardware_id (required)
    • ip_address (optional, auto-detected)
    • user_agent (optional, auto-detected)

3. Enhanced drf-spectacular Settings​

File: license_platform/settings/base.py

Comprehensive SPECTACULAR_SETTINGS configuration:

Metadata:

Servers:

Tags:

  • License Management (3 operations)
  • Authentication (future)
  • Health (future)

Security Schemes:

  • JWTAuthentication (HTTP Bearer with JWT)
  • Description of Firebase JWT tokens

Swagger UI Settings:

  • Deep linking enabled
  • Persistent authorization
  • Filter enabled
  • Try-it-out enabled

4. Comprehensive Documentation​

Files Created:

docs/api-documentation.md (25KB)​

Complete API reference including:

  • Table of contents
  • Authentication guide (Firebase JWT)
  • Overview of features
  • Session lifecycle explanation
  • All 3 endpoints with full specs
  • Request/response schemas
  • Error response catalog
  • Rate limiting information
  • Complete Python client example
  • Complete JavaScript client example
  • Changelog

Sections:

  • Authentication
  • Overview
  • Endpoints (3 detailed)
  • Error Responses
  • Rate Limits
  • Examples (6 code samples)

docs/api-readme.md (18KB)​

Documentation guide including:

  • Documentation file descriptions
  • Accessing interactive docs (Swagger UI, ReDoc)
  • Schema generation instructions
  • Usage guides for different audiences:
    • API consumers
    • API developers
    • QA/testing teams
  • Documentation standards
  • Validation and quality checks
  • Troubleshooting guide
  • Best practices

scripts/generate-openapi-schema.sh​

Automated schema generation script:

  • Activates virtual environment
  • Checks dependencies
  • Runs migrations if needed
  • Generates openapi-schema.yaml
  • Validates schema
  • Provides next steps

Features:

  • Error handling
  • Dependency verification
  • Clear output messages
  • Usage instructions

Documentation Endpoints​

Available Endpoints​

URLDescriptionFormat
/api/schema/OpenAPI schema JSONJSON
/api/docs/Swagger UI (interactive)HTML
/api/redoc/ReDoc (clean docs)HTML

Accessing Documentation​

Development:

http://localhost:8000/api/schema/     # Download schema
http://localhost:8000/api/docs/       # Swagger UI
http://localhost:8000/api/redoc/      # ReDoc

Production:

https://api.coditect.com/api/schema/  # Download schema
https://api.coditect.com/api/docs/    # Swagger UI
https://api.coditect.com/api/redoc/   # ReDoc

Key Features​

1. Comprehensive Examples​

Every endpoint includes:

  • ✅ Realistic request examples
  • ✅ Success response examples (multiple scenarios)
  • ✅ Error response examples (all status codes)
  • ✅ Edge case examples

Example Coverage:

  • LicenseAcquire: 7 examples
  • LicenseHeartbeat: 7 examples
  • LicenseRelease: 6 examples
  • Total: 20+ examples

2. Authentication Documentation​

Complete JWT authentication docs:

  • ✅ Security scheme definition
  • ✅ Bearer token format
  • ✅ Firebase JWT integration
  • ✅ Token lifetime information
  • ✅ Authorization header example

3. Error Response Standards​

Consistent error format documented:

{
  "error": "Error type",
  "detail": "Detailed error message"
}

All error codes documented:

  • 400 Bad Request (validation errors)
  • 401 Unauthorized (authentication)
  • 404 Not Found (resource not found)
  • 409 Conflict (no seats available)
  • 410 Gone (session expired)
  • 503 Service Unavailable (Redis offline)
  • 500 Internal Server Error (unexpected errors)

4. Interactive Testing​

Swagger UI features:

  • ✅ Try-it-out functionality
  • ✅ JWT authentication support
  • ✅ Request/response examples
  • ✅ Automatic validation
  • ✅ Code generation snippets

5. Client Integration Examples​

Complete working examples provided:

  • ✅ Python client class (100 lines)
  • ✅ JavaScript client class (80 lines)
  • ✅ Heartbeat automation patterns
  • ✅ Error handling strategies
  • ✅ Session lifecycle management

Quality Assurance​

Documentation Standards Met​

✅ Completeness:

  • All endpoints documented
  • All request/response schemas
  • All error cases covered
  • All authentication requirements

✅ Accuracy:

  • Examples match actual API behavior
  • Field types correctly specified
  • Status codes match implementation
  • Validation rules documented

✅ Usability:

  • Clear descriptions
  • Realistic examples
  • Code samples provided
  • Troubleshooting guide included

✅ Maintainability:

  • Automated generation available
  • Single source of truth (code annotations)
  • Version controlled
  • Standards documented

Validation Performed​

✅ Schema Structure:

  • OpenAPI 3.0 compliance
  • Valid YAML syntax
  • Reference integrity
  • Type consistency

✅ Content Quality:

  • All examples valid JSON
  • Realistic data values
  • Consistent formatting
  • Clear descriptions

✅ Functionality:

  • Swagger UI renders correctly
  • ReDoc displays properly
  • Examples executable
  • Authentication works

Success Criteria​

All requirements met:

✅ OpenAPI 3.0 Schema Generated

  • Via drf-spectacular
  • Includes all endpoints
  • Comprehensive metadata

✅ Enhanced Endpoint Docstrings

  • @extend_schema decorators
  • Request/response examples
  • Error scenarios

✅ Request/Response Examples

  • Realistic data
  • Multiple scenarios
  • All status codes

✅ Authentication Documented

  • Firebase JWT scheme
  • Bearer token format
  • Security examples

✅ Error Response Schemas

  • All HTTP status codes
  • Consistent format
  • Clear descriptions

✅ Swagger UI Accessible

  • /api/docs/ endpoint
  • Interactive testing
  • JWT authentication

✅ ReDoc Accessible

  • /api/redoc/ endpoint
  • Clean documentation
  • Easy navigation

✅ Schema Download Available

  • /api/schema/ endpoint
  • JSON format
  • Valid OpenAPI 3.0

Usage Instructions​

For API Consumers​

  1. Read the documentation:

  2. Test interactively:

  3. Integrate:

    • Use Python or JavaScript examples
    • Or generate SDK from schema
    • Implement error handling

For API Developers​

  1. Generate schema:

    ./scripts/generate-openapi-schema.sh

  2. Verify documentation:

  3. Make changes:

    • Update @extend_schema decorators
    • Add new examples
    • Regenerate schema

For QA/Testing​

  1. Import into Postman:

  2. Automated testing:

    pip install schemathesis
    schemathesis run http://localhost:8000/api/schema/

Files Modified​

Core Implementation​

  • api/v1/views/license.py - Enhanced with @extend_schema decorators
  • api/v1/serializers/license.py - Added examples and field descriptions
  • license_platform/settings/base.py - Comprehensive SPECTACULAR_SETTINGS

Documentation​

  • docs/api-documentation.md - Complete API reference (NEW)
  • docs/api-readme.md - Documentation guide (NEW)
  • docs/openapi-documentation-summary.md - This file (NEW)

Scripts​

  • scripts/generate-openapi-schema.sh - Schema generation automation (NEW)

Next Steps​

Immediate (Complete)​

✅ Enhanced all 3 license endpoints ✅ Added comprehensive examples ✅ Documented authentication ✅ Created documentation files ✅ Automated schema generation

Future Enhancements​

  1. Additional Endpoints:

    • Health check endpoints (tagged)
    • Authentication endpoints (future)
    • User management endpoints (future)

  2. Advanced Features:

    • API versioning support
    • Deprecation notices
    • Changelog integration
    • Migration guides

  3. Client SDKs:

    • Auto-generate Python SDK
    • Auto-generate JavaScript SDK
    • Auto-generate TypeScript SDK
    • Publish to package registries

  4. Testing:

    • Contract testing with schema
    • Automated example validation
    • Documentation coverage reports
    • API changelog automation

Support​

Documentation Issues:

API Questions:

Schema Generation:

  • See: docs/api-readme.md
  • Script: scripts/generate-openapi-schema.sh

Implementation Date: November 30, 2025 Implemented By: AI Documentation Specialist (codi-documentation-writer) Review Status: Ready for Human Review Deployment Status: Ready for Development Environment