Promotion Decision Engine (Gate + Approval Combination)

Module

ReleaseOrchestrator

Status

VERIFIED

Description

Decision engine combining gate evaluation results and approval status into final promotion decisions. Generates decision records with evidence, supports configurable decision rules, and maintains decision history.

Implementation Details

Modules: src/ReleaseOrchestrator/__Libraries/StellaOps.ReleaseOrchestrator.Promotion/Decision/
Key Classes:
- DecisionEngine (src/ReleaseOrchestrator/__Libraries/StellaOps.ReleaseOrchestrator.Promotion/Decision/DecisionEngine.cs) - combines gate evaluation results and approval status into promotion decisions
- DecisionRecorder (src/ReleaseOrchestrator/__Libraries/StellaOps.ReleaseOrchestrator.Promotion/Decision/DecisionRecorder.cs) - records decision outcomes with evidence for auditability
- DecisionRules (src/ReleaseOrchestrator/__Libraries/StellaOps.ReleaseOrchestrator.Promotion/Decision/DecisionRules.cs) - configurable rules for combining gate and approval results
Interfaces: IDecisionEngine
Source: SPRINT_20260110_106_005_PROMOT_decision_engine.md

E2E Test Plan

Submit gate results and approval status to DecisionEngine and verify a promotion decision is produced
Verify decision with all gates passing and approval granted results in "Approved" decision
Verify decision with a failing gate results in "Rejected" decision regardless of approval status
Verify DecisionRecorder persists decision records with evidence references
Configure custom DecisionRules and verify the engine applies them correctly
Query decision history and verify past decisions are retrievable

Verification

Verified: 2026-02-13T21:00:00Z
Method: Tier 2d integration tests
Result: PASS

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