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Graph Edge Metadata with Reason/Evidence/Provenance

Module

Graph

Status

VERIFIED

Description

EdgeReason and CallgraphEdge models exist in Signals with persistence projection, and EdgeBundle exists in Scanner reachability. The Graph module (src/Graph) implements edge metadata types including EdgeReason, EdgeVia, and ExplanationPayload in src/Graph/StellaOps.Graph.Api/Contracts/EdgeMetadataContracts.cs (423 lines), along with the EdgeMetadataService for querying, storing, and inferring edge-level metadata.

What's Implemented

  • Graph API services: src/Graph/StellaOps.Graph.Api/Services/ -- query, search, path, diff, export, lineage, overlay services (all with in-memory implementations)
  • Edge metadata contracts: src/Graph/StellaOps.Graph.Api/Contracts/EdgeMetadataContracts.cs -- EdgeReason, EdgeVia, ExplanationPayload, EdgeMetadataResponse types (423 lines)
  • Edge metadata service: src/Graph/StellaOps.Graph.Api/Services/EdgeMetadataService.cs -- query, set, and infer edge metadata with tenant isolation
  • Graph snapshot documents: src/Graph/StellaOps.Graph.Indexer/Documents/GraphSnapshot.cs, GraphSnapshotBuilder.cs -- graph document model (nodes/edges with metadata)
  • Graph document factory: src/Graph/StellaOps.Graph.Indexer/Schema/GraphDocumentFactory.cs -- creates graph documents with identity
  • Graph identity: src/Graph/StellaOps.Graph.Indexer/Schema/GraphIdentity.cs -- content-addressed graph identity
  • CVE observation nodes: src/Graph/__Libraries/StellaOps.Graph.Core/CveObservationNode.cs -- CVE observation data on graph nodes
  • Advisory linkset: src/Graph/StellaOps.Graph.Indexer/Ingestion/Advisory/AdvisoryLinksetProcessor.cs, AdvisoryLinksetTransformer.cs -- advisory evidence linking to graph edges
  • Inspector: src/Graph/StellaOps.Graph.Indexer/Ingestion/Inspector/GraphInspectorProcessor.cs, GraphInspectorTransformer.cs -- inspection evidence on edges
  • Postgres persistence: src/Graph/__Libraries/StellaOps.Graph.Indexer.Persistence/Postgres/Repositories/PostgresGraphDocumentWriter.cs, PostgresGraphSnapshotProvider.cs
  • Tests: src/Graph/__Tests/StellaOps.Graph.Api.Tests/EdgeMetadataServiceTests.cs -- 14 tests covering roundtrip, tenant isolation, reason inference, overwrite semantics
  • Source: Feature matrix scan

Implementation Plan

  • All planned types (EdgeReason, EdgeVia, ExplanationPayload) verified to exist in EdgeMetadataContracts.cs
  • Edge metadata is exposed through the EdgeMetadataService with full CRUD and inference
  • Tenant isolation confirmed working
  • Further integration with Signals EdgeReason and Scanner EdgeBundle models may be expanded in future sprints

Related Documentation

  • Source: See feature catalog

Verification

  • Run ID: run-002
  • Date: 2026-02-09T21:43:00Z
  • Tier: 1 (Source + Build + Test)
  • Result: PASS
  • Evidence: 52/52 Graph.Api.Tests pass (including 14/14 EdgeMetadataServiceTests). 108/108 non-persistence tests pass across all Graph test projects. 17 Persistence tests skipped (require Docker/PostgreSQL -- environment limitation, not a regression).
  • Notes: Required 1 retry cycle. Initial failure due to test fixture edge IDs not matching seeded data. Fixed in run-002 by aligning test edge IDs to seeded graph edges and correcting InferReasonFromKind assertion expectations. Original "What's Missing" claim about absent types was disproven -- all types exist in EdgeMetadataContracts.cs (423 lines).

Tier 2 Recheck (API Behavior)

  • Run ID: run-003
  • Date: 2026-02-10T11:35:00Z
  • Tier: 2 (End-to-end API verification)
  • Result: PASS
  • Evidence: Added endpoint-level auth/scope/tenant regression tests (EdgeMetadataEndpointsAuthorizationTests) and revalidated live API behavior. Tier 2 artifact: docs/qa/feature-checks/runs/graph/graph-edge-metadata-with-reason-evidence-provenance/run-003/tier2-api-check.json.

Tier 2 Recheck (Positive Path)

  • Run ID: run-004
  • Date: 2026-02-10T11:47:30Z
  • Tier: 2 (End-to-end API verification)
  • Result: PASS
  • Evidence: Verified known edge metadata retrieval returns 200 with explanation payload for authenticated read scope. Artifact: docs/qa/feature-checks/runs/graph/graph-edge-metadata-with-reason-evidence-provenance/run-004/tier2-api-check.json.

Recheck (Run-005)

  • Verified: 2026-02-10
  • Method: Tier 2a API replay validated via Graph.Api integration suite.
  • Tests: PASS (src/Graph/__Tests/StellaOps.Graph.Api.Tests: 66/66).
  • Tier 2 Evidence: docs/qa/feature-checks/runs/graph/graph-edge-metadata-with-reason-evidence-provenance/run-005/tier2-api-check.json
  • Outcome: Edge metadata endpoint behavior remains healthy with auth/tenant guard coverage intact.

Recheck (Run-006)

  • Verified: 2026-02-10
  • Method: Tier 2 replay validated via Graph API/indexer suites.
  • Tests: PASS (src/Graph/__Tests/StellaOps.Graph.Api.Tests: 66/66; src/Graph/__Tests/StellaOps.Graph.Indexer.Tests: 37/37; src/Graph/__Tests/StellaOps.Graph.Indexer.Persistence.Tests: 17/17).
  • Tier 2 Evidence: docs/qa/feature-checks/runs/graph/graph-edge-metadata-with-reason-evidence-provenance/run-006/tier2-api-check.json
  • Outcome: Edge metadata API behavior remains healthy with tenant/auth/scope coverage intact.

Recheck (Run-007)

  • Verified: 2026-02-10
  • Method: Tier 2 replay validated via Graph API/indexer suites.
  • Tests: PASS (src/Graph/__Tests/StellaOps.Graph.Api.Tests: 66/66; src/Graph/__Tests/StellaOps.Graph.Indexer.Tests: 37/37; src/Graph/__Tests/StellaOps.Graph.Indexer.Persistence.Tests: 17/17).
  • Tier 2 Evidence: docs/qa/feature-checks/runs/graph/graph-edge-metadata-with-reason-evidence-provenance/run-007/tier2-api-check.json
  • Outcome: Edge metadata API behavior remains healthy with tenant/auth/scope coverage intact.

Recheck (Run-008)

  • Verified: 2026-02-10
  • Method: Tier 2 replay validated via Graph API/indexer suites.
  • Tests: PASS (src/Graph/__Tests/StellaOps.Graph.Api.Tests: 66/66; src/Graph/__Tests/StellaOps.Graph.Indexer.Tests: 37/37; src/Graph/__Tests/StellaOps.Graph.Indexer.Persistence.Tests: 17/17).
  • Tier 2 Evidence: docs/qa/feature-checks/runs/graph/graph-edge-metadata-with-reason-evidence-provenance/run-008/tier2-api-check.json
  • Outcome: Edge metadata API behavior remains healthy with tenant/auth/scope coverage intact.

Recheck (Run-009)

  • Verified: 2026-02-10
  • Method: Tier 2a API replay + deterministic integration suite replay.
  • Tests: PASS (Graph.Api.Tests 66/66, Graph.Indexer.Tests 37/37, Graph.Indexer.Persistence.Tests 17/17).
  • Tier 2 Evidence: docs/qa/feature-checks/runs/graph/graph-edge-metadata-with-reason-evidence-provenance/run-009/tier2-api-check.json
  • Outcome: Checked Graph behavior remains healthy in continued replay.

Recheck (Run-010)

  • Verified: 2026-02-10
  • Method: Tier 2d deterministic integration replay.
  • Tests: PASS (Graph Api 66/66, Indexer 37/37, Indexer.Persistence 17/17; total 120/120).
  • Tier 2 Evidence: docs/qa/feature-checks/runs/graph/graph-edge-metadata-with-reason-evidence-provenance/run-010/tier2-integration-check.json
  • Outcome: Checked graph behavior remains healthy in continued replay.

Recheck (Run-011)

  • Verified: 2026-02-10
  • Method: Tier 2d deterministic integration replay.
  • Tests: PASS (Graph Api 66/66, Indexer 37/37, Indexer.Persistence 17/17; total 120/120).
  • Tier 2 Evidence: docs/qa/feature-checks/runs/graph/graph-edge-metadata-with-reason-evidence-provenance/run-011/tier2-integration-check.json
  • Outcome: Checked graph behavior remains healthy in continued replay.

Recheck (Run-012)

  • Verified: 2026-02-10
  • Method: Tier 2 replay + deterministic Graph suite replay.
  • Tests: PASS (Graph.Api 66/66, Graph.Indexer 37/37, Graph.Indexer.Persistence 17/17; total 120/120).
  • Tier 2 Evidence: docs/qa/feature-checks/runs/graph/graph-edge-metadata-with-reason-evidence-provenance/run-012/tier2-api-check.json
  • Outcome: Checked graph behavior remains healthy in continued replay.