This pull request introduces a hybrid architecture for the Releasability system, enabling both inline (local) and lambda-based (AWS) checks. It adds a new inline check framework, updates supporting infrastructure, and provides documentation and configuration for the new approach. The changes improve performance, reliability, and extensibility, while maintaining backward compatibility with existing lambda-based checks.

Hybrid Architecture Implementation:

• Added a new inline check framework:

  • Introduced abstract base class InlineCheck and CheckContext for inline checks (src/releasability/inline_check.py).
  • Created a new check registry system to manage both inline and lambda-based checks (src/releasability/check_registry.py).
  • Implemented a sample inline check, CheckLicenses, as a placeholder (src/releasability/checks/check_licenses.py).
  • Added __init__.py to mark the inline checks package (src/releasability/checks/__init__.py).

• Updated orchestration logic:

  • Modified ReleasabilityService and src/main.py to execute both inline and lambda checks, aggregate results, and expose a unified report (src/main.py).

Documentation and Configuration:

• Added detailed architecture documentation and diagrams:

  • New ARCHITECTURE.md describing the hybrid system design and migration path.
  • New architecture-diagram.md with mermaid diagrams and timeline.

• Updated workflow and configuration files:

  • Enhanced .github/workflows/build.yml to install dependencies, run tests, and prepare coverage for both main and releasability-status modules.
  • Updated sonar-project.properties to include both modules and coverage files, and to exclude test files from coverage.
  • Added a new output for CheckLicenses to action.yml.

Key changes by theme:

1. Hybrid Inline/Lambda Check Architecture

• Introduced InlineCheck and CheckContext base classes for inline checks (src/releasability/inline_check.py).
• Created CheckRegistry for unified management of both check types (src/releasability/check_registry.py).
• Implemented a sample inline check, CheckLicenses (src/releasability/checks/check_licenses.py).
• Updated main orchestration to execute and aggregate both inline and lambda check results (src/main.py).

2. Documentation and Diagrams

• Added ARCHITECTURE.md with detailed hybrid system design, migration strategy, and error handling.
• Added architecture-diagram.md with visual diagrams and execution timeline.

3. CI/CD and SonarCloud Integration

• Enhanced workflow to install dependencies, run tests, and generate/prepare coverage for both main and releasability-status modules (.github/workflows/build.yml).
• Updated SonarCloud configuration to include both codebases and coverage, and to exclude tests from coverage (sonar-project.properties).
• Added output for the new CheckLicenses inline check to action.yml.

Tested here https://github.com/SonarSource/gh-action_releasability/actions/runs/17792947345/job/50573988184