135 lines
7.7 KiB
Markdown
135 lines
7.7 KiB
Markdown
# Immutable Audit Log (Timeline)
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## Module
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Timeline
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## Status
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VERIFIED
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## Description
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Immutable timeline audit log with a dedicated web service and indexer for recording all scan, attestation, and verdict events.
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## Implementation Details
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- **TimelineQueryService**: `src/Timeline/__Libraries/StellaOps.Timeline.Core/TimelineQueryService.cs` -- append-only event store query layer: GetByCorrelationIdAsync (with HLC range, service/kind filters, pagination), GetCriticalPathAsync (causal latency analysis), GetByServiceAsync (service-scoped queries)
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- **ITimelineEventStore**: referenced from `StellaOps.Eventing.Storage` -- append-only persistence interface: events stored with deterministic EventId (SHA-256 of correlation_id+t_hlc+service+kind), HLC timestamps, payload digests, engine version fingerprints
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- **TimelineEndpoints**: `src/Timeline/StellaOps.Timeline.WebService/Endpoints/TimelineEndpoints.cs` -- REST API at `/api/v1/timeline`: GET /{correlationId} returns immutable event chain, GET /{correlationId}/critical-path for latency analysis
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- **ExportEndpoints**: `src/Timeline/StellaOps.Timeline.WebService/Endpoints/ExportEndpoints.cs` -- forensic export at `/api/v1/timeline/{correlationId}/export`: NDJSON/JSON bundle with optional DSSE signing for evidence preservation
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- **TimelineBundleBuilder**: `src/Timeline/__Libraries/StellaOps.Timeline.Core/Export/TimelineBundleBuilder.cs` -- builds NDJSON/JSON export bundles with event metadata (event_id, t_hlc, ts_wall, service, kind, payload_digest, engine_version); optional DSSE signing via IEventSigner
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- **HealthEndpoints**: `src/Timeline/StellaOps.Timeline.WebService/Endpoints/HealthEndpoints.cs` -- service health monitoring
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- **TimelineAuthorizationMiddleware**: `src/Timeline/StellaOps.Timeline.WebService/Authorization/TimelineAuthorizationMiddleware.cs` -- authorization for timeline access
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- **Tests**: `src/Timeline/__Tests/StellaOps.Timeline.WebService.Tests/TimelineApiIntegrationTests.cs`
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- **Source**: Feature matrix scan
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## E2E Test Plan
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- [x] Verify events stored are immutable (no update/delete operations exposed)
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- [x] Verify event IDs are deterministic based on correlation_id + t_hlc + service + kind
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- [x] Test export endpoint produces valid NDJSON bundle with all event metadata
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- [x] Verify DSSE-signed export bundles can be verified with the signing key
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- [x] Test JSON export format includes event metadata section with count and export timestamp
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- [x] Verify payload digests in exported events match original payloads
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- [x] Test authorization middleware restricts timeline access to authorized users
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## Verification
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**Run ID**: run-001
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**Date**: 2026-02-10
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**Verdict**: PASS
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**Implementation Verification**:
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- Append-only enforced architecturally: ITimelineEventStore has AppendAsync only (no update/delete)
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- REST API has GET-only endpoints for events
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- TimelineAuthorizationMiddleware with tenant isolation
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- DSSE-signed forensic export via TimelineBundleBuilder
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- Integration tests verify GET-only access pattern
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**Test Execution**:
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- Immutability tests PASS
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- Deterministic event ID tests PASS
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- Export format tests PASS
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- Authorization tests PASS
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**Build Status**:
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- 0 errors
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- 0 warnings
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- Build: PASS
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**Overall Verdict**: PASS
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## Recheck (run-002)
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- **Date**: 2026-02-10
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- **Result**: PASS after export endpoint wiring fix
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- **Key fix verified**: unknown export status/download IDs now return 404 instead of synthetic 200 responses.
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- **Tests**: Timeline.WebService.Tests 19/19 pass.
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- **Evidence**: `docs/qa/feature-checks/runs/timeline/immutable-audit-log/run-002/tier2-api-check.json`
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## Recheck (run-003)
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- **Date**: 2026-02-10
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- **Result**: PASS
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- **Verification**: unknown export IDs continue to return 404 for status/download paths.
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- **Tests**: Timeline.Core.Tests 7/7, Timeline.WebService.Tests 19/19 (26 total).
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- **Evidence**: `docs/qa/feature-checks/runs/timeline/immutable-audit-log/run-003/tier2-api-check.json`
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## Recheck (Run-004)
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- **Verified**: 2026-02-10
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- **Method**: Tier 2 replay via in-process WebApplicationFactory + full suite replay.
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- **Tests**: PASS (`src/Timeline/__Tests/StellaOps.Timeline.Core.Tests`: 7/7; `src/Timeline/__Tests/StellaOps.Timeline.WebService.Tests`: 19/19).
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- **Tier 2 Evidence**: `docs/qa/feature-checks/runs/timeline/immutable-audit-log/run-004/tier2-api-check.json`
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- **Outcome**: Audit export status/download behavior remains stable and non-synthetic.
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## Recheck (Run-005)
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- **Verified**: 2026-02-10
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- **Method**: Tier 2a API replay validated via Timeline integration suites.
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- **Tests**: PASS (`src/Timeline/__Tests/StellaOps.Timeline.Core.Tests`: 7/7; `src/Timeline/__Tests/StellaOps.Timeline.WebService.Tests`: 19/19).
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- **Tier 2 Evidence**: `docs/qa/feature-checks/runs/timeline/immutable-audit-log/run-005/tier2-api-check.json`
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- **Outcome**: Immutable audit-log export/status behaviors remain healthy.
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## Recheck (Run-006)
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- **Verified**: 2026-02-10
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- **Method**: Tier 2 replay (API + integration) with deterministic suite verification.
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- **Tests**: PASS (src/Timeline/__Tests/StellaOps.Timeline.Core.Tests: 7/7; src/Timeline/__Tests/StellaOps.Timeline.WebService.Tests: 19/19).
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- **Tier 2 Evidence**: docs/qa/feature-checks/runs/timeline/immutable-audit-log/run-006/tier2-api-check.json
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- **Outcome**: Checked timeline behavior remains healthy in continued replay.
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## Recheck (Run-007)
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- **Verified**: 2026-02-10
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- **Method**: Tier 2 replay (API + integration) with deterministic suite verification.
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- **Tests**: PASS (src/Timeline/__Tests/StellaOps.Timeline.Core.Tests: 7/7; src/Timeline/__Tests/StellaOps.Timeline.WebService.Tests: 19/19).
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- **Tier 2 Evidence**: docs/qa/feature-checks/runs/timeline/immutable-audit-log/run-007/tier2-api-check.json
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- **Outcome**: Checked timeline behavior remains healthy in continued replay.
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## Recheck (Run-008)
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- **Verified**: 2026-02-10
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- **Method**: Tier 2a API replay + deterministic integration suite replay.
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- **Tests**: PASS (src/Timeline/__Tests/StellaOps.Timeline.Core.Tests: 7/7, src/Timeline/__Tests/StellaOps.Timeline.WebService.Tests: 19/19).
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- **Tier 2 Evidence**: docs/qa/feature-checks/runs/timeline/immutable-audit-log/run-008/tier2-api-check.json
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- **Outcome**: Checked Timeline behavior remains healthy in continued replay.
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## Recheck (Run-009)
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- **Verified**: 2026-02-10
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- **Method**: Tier 2a API replay + deterministic integration suite replay.
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- **Tests**: PASS (src/Timeline/__Tests/StellaOps.Timeline.Core.Tests: 7/7, src/Timeline/__Tests/StellaOps.Timeline.WebService.Tests: 19/19).
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- **Tier 2 Evidence**: docs/qa/feature-checks/runs/timeline/immutable-audit-log/run-009/tier2-api-check.json
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- **Outcome**: Checked Timeline behavior remains healthy in continued replay.
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## Recheck (Run-010)
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- **Verified**: 2026-02-10
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- **Method**: Tier 2d deterministic integration replay.
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- **Tests**: PASS (Timeline.Core 7/7, Timeline.WebService 19/19; total 26/26).
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- **Tier 2 Evidence**: docs/qa/feature-checks/runs/timeline/immutable-audit-log/run-010/tier2-integration-check.json
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- **Outcome**: Checked timeline behavior remains healthy in continued replay.
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## Recheck (Run-011)
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- **Verified**: 2026-02-10
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- **Method**: Tier 2d deterministic integration replay.
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- **Tests**: PASS (Timeline.Core 7/7, Timeline.WebService 19/19; total 26/26).
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- **Tier 2 Evidence**: docs/qa/feature-checks/runs/timeline/immutable-audit-log/run-011/tier2-integration-check.json
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- **Outcome**: Checked timeline behavior remains healthy in continued replay.
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## Recheck (Run-012)
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- **Verified**: 2026-02-10
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- **Method**: Tier 2 replay + deterministic integration suite replay.
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- **Tests**: PASS (src/Timeline/__Tests/StellaOps.Timeline.Core.Tests: 7/7; src/Timeline/__Tests/StellaOps.Timeline.WebService.Tests: 19/19; total 26/26).
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- **Tier 2 Evidence**: docs/qa/feature-checks/runs/timeline/immutable-audit-log/run-012/tier2-api-check.json
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- **Outcome**: Checked timeline behavior remains healthy in continued replay.
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