Pattern Proposal: Service Facade Orchestration

Summary

Encapsulates multi-step governance actions and compliance evaluations behind cohesive application service interfaces.

Candidate Pattern

• ID: service-facade-orchestration
• Classification: architectural
• Maturity: strategic_direction
• Type: emerging

Observed Signals

No specific signals listed.

Evidence

Supporting Evidence

• src/cas_runner/governance/governance_action_service.py (GovernanceActionService) - Coordinates governance actions, resolutions, and lifecycle execution.
• src/cas_runner/governance/compliance_engine.py (ComplianceEngine) - Evaluates rules and findings into unified compliance metrics.

Scope Assessment

• Evidence Strength: high
• Confidence: high
• Applies to: ideas-to-life-cas

Rationale

• Intent: Provide coarse-grained operations for runners and CLI entry points while coordinating domain models and compliance engines.
• Context: CLI commands and automated workflows require running governance assessments without dealing directly with raw state registries or individual file parsers.
• Force: Presentation components become bloated if orchestrating multiple domain operations
• Force: Transaction and execution logic should be reusable across automated and manual triggers

Traceability

Artifact source: proposed-patterns