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git.stella-ops.org/docs/features/unchecked/vexlens/vex-consensus-engine.md

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VEX Consensus Engine

Module

VexLens

Status

IMPLEMENTED

Description

A multi-mode VEX consensus engine is implemented with trust-weighted scoring, conflict resolution, and persistence via dual-write consensus projection stores.

Implementation Details

  • Consensus engine: src/VexLens/StellaOps.VexLens/Consensus/VexConsensusEngine.cs, IVexConsensusEngine.cs -- multi-mode consensus with trust-weighted scoring and conflict resolution
  • Core consensus: src/VexLens/StellaOps.VexLens/StellaOps.VexLens.Core/Consensus/VexConsensusEngine.cs, IVexConsensusEngine.cs
  • Dual-write store: src/VexLens/StellaOps.VexLens/Storage/DualWriteConsensusProjectionStore.cs -- writes consensus projections to both in-memory and persistent stores
  • In-memory store: src/VexLens/StellaOps.VexLens/Storage/InMemoryConsensusProjectionStore.cs
  • Postgres store proxy: src/VexLens/StellaOps.VexLens/Storage/PostgresConsensusProjectionStoreProxy.cs
  • Postgres persistence: src/VexLens/StellaOps.VexLens.Persistence/Postgres/PostgresConsensusProjectionStore.cs
  • Persistence repository: src/VexLens/StellaOps.VexLens.Persistence/Repositories/ConsensusProjectionRepository.cs, IConsensusProjectionRepository.cs
  • Consensus API models: src/VexLens/StellaOps.VexLens/Api/ConsensusApiModels.cs -- API request/response models
  • Orchestration: src/VexLens/StellaOps.VexLens/Orchestration/ConsensusJobTypes.cs, IConsensusJobService.cs, OrchestratorLedgerEventEmitter.cs
  • Signal emitter: src/VexLens/StellaOps.VexLens/Integration/VexSignalEmitter.cs -- emits VEX signals to downstream systems
  • Policy integration: src/VexLens/StellaOps.VexLens/Integration/PolicyEngineIntegration.cs, IPolicyEngineIntegration.cs -- feeds consensus into policy engine
  • Noise gate: src/VexLens/StellaOps.VexLens/NoiseGate/NoiseGateService.cs, INoiseGate.cs, NoiseGateOptions.cs -- suppresses low-signal VEX noise
  • Metrics: src/VexLens/StellaOps.VexLens/Observability/VexLensMetrics.cs -- consensus engine metrics
  • WebService API: src/VexLens/StellaOps.VexLens.WebService/Program.cs, Extensions/VexLensEndpointExtensions.cs, ExportEndpointExtensions.cs
  • Tests: src/VexLens/StellaOps.VexLens/__Tests/StellaOps.VexLens.Tests/Storage/DualWriteConsensusProjectionStoreTests.cs, PostgresConsensusProjectionStoreProxyTests.cs, NoiseGate/NoiseGateServiceTests.cs
  • Source: Feature matrix scan

E2E Test Plan

  • Verify consensus engine produces trust-weighted verdicts from multiple VEX sources
  • Test dual-write store persists to both in-memory and PostgreSQL
  • Verify conflict resolution handles contradictory VEX statements
  • Test noise gate suppresses low-confidence VEX signals
  • Verify policy engine integration receives consensus results
  • Test consensus API endpoints return valid projections