╔══════════════════════════════════════════════════════════════════════════════╗ ║ PHASE 1: SPEC - COMPLETION SUMMARY ║ ║ ║ ║ Issue: #387 - feat: Add comprehensive observability for Cedar evaluation ║ ║ Status: ✅ COMPLETE - Awaiting CTO Approval ║ ║ Date: 2025-12-06 ║ ╚══════════════════════════════════════════════════════════════════════════════╝ ┌──────────────────────────────────────────────────────────────────────────────┐ │ WHAT WAS ACCOMPLISHED │ └──────────────────────────────────────────────────────────────────────────────┘ ✅ Analyzed existing Cedar observability implementation ✅ Identified gaps: OpenTelemetry tracing, structured logging, enhanced metrics ✅ Created comprehensive specification (1328 lines) ✅ Documented 11 Gherkin scenarios covering all requirements ✅ Specified file structure (7 new files, 4 enhanced files) ✅ Designed performance requirements (<1ms overhead) ✅ Designed Grafana dashboard (8 panels) ✅ Posted to Issue #387 for CTO review ✅ Created 3 supporting documents ┌──────────────────────────────────────────────────────────────────────────────┐ │ KEY DELIVERABLES │ └──────────────────────────────────────────────────────────────────────────────┘ 📄 Document 1: Complete Specification Location: docs/observability/OBSERVABILITY_SPEC.md Size: 1328 lines Contains: • 11 Gherkin scenarios (metrics, tracing, logging, performance) • OpenTelemetry distributed tracing architecture • Structured JSON logging specification • Enhanced Prometheus metrics design • Grafana dashboard specification (8 panels) • File structure and integration points • Dependencies and infrastructure requirements 📄 Document 2: Executive Summary Location: OBSERVABILITY_SPEC_SUMMARY.md Size: 400+ lines Contains: • Current state analysis (what exists vs. gaps) • Three pillars of observability breakdown • File structure overview • Performance requirements • 3-phase workflow plan • Open questions and blockers 📄 Document 3: Phase 1 Completion Evidence Location: PHASE_1_SPEC_COMPLETE.md Size: 300+ lines Contains: • Specification highlights • Success criteria checklist • Next steps for each phase • Approval request 🔗 GitHub Issue Comment URL: https://github.com/heyarchie-ai/archie-platform-v3/issues/387#issuecomment-3621376581 Contains: Full specification summary with approval request ┌──────────────────────────────────────────────────────────────────────────────┐ │ TECHNICAL SCOPE │ └──────────────────────────────────────────────────────────────────────────────┘ 📊 THREE PILLARS OF OBSERVABILITY 1. METRICS (Prometheus) - ENHANCED ✅ Existing: cedar_evaluations_total, cedar_evaluation_duration_seconds ✅ Existing: cedar_cache_hits_total, cedar_cache_misses_total ✨ New: Decision labels {decision="Allow|Deny"} ✨ New: cedar_policy_updates_total ✨ New: cedar_evaluation_errors_total{error_type} 2. TRACING (OpenTelemetry) - NEW 🆕 Span hierarchy: cedar.evaluate → cache_check → cedarpy_evaluate 🆕 Attributes: principal, action, resource, decision, cache_hit 🆕 Backend: Jaeger (dev) + Google Cloud Trace (prod) 🆕 Integration: FastAPI instrumentation + custom spans 3. LOGGING (Structured JSON) - NEW 🆕 Format: JSON with correlation_id, trace_id, span_id 🆕 Events: evaluation.{start|complete|error}, cache.{hit|miss} 🆕 Destination: stdout → GKE Cloud Logging 🆕 Context: decision, cache_hit, duration_ms 📁 FILE STRUCTURE New Files (7): • middleware/tracing.py - OpenTelemetry setup • middleware/logging.py - Structured JSON logging • utils/logging_helpers.py - Log event helpers • tests/unit/test_tracing.py - Tracing tests • tests/unit/test_logging.py - Logging tests • tests/performance/test_observability_overhead.py - Performance tests • infra/grafana/cedar-observability-dashboard.json - Dashboard Enhanced Files (4): • services/cedar_metrics.py - Add decision labels, policy updates • services/cedar_evaluator.py - Add tracing + logging integration • main.py - Add middleware, configure tracing • requirements.txt - Add OpenTelemetry dependencies ⚡ PERFORMANCE REQUIREMENTS Target: <1ms average overhead for ALL observability features combined Measurement Strategy: 1. Baseline (Cedar without observability) 2. Incremental testing (metrics, tracing, logging separately) 3. Full stack (all features enabled) 4. Benchmark: 1000 iterations, cache-warm Success Criteria: • Average: <1ms per evaluation • P95: <2ms per evaluation • P99: <5ms per evaluation 📊 GRAFANA DASHBOARD (8 Panels) 1. Request Rate by Decision (Time Series) 2. Evaluation Latency P50/P95/P99 (Time Series) 3. Cache Hit Rate (Gauge) 4. Cache Breakdown L1/L2/Miss (Pie Chart) 5. Error Rate by Type (Time Series) 6. Decision Distribution Allow/Deny (Stat Panels) 7. Batch Performance (Time Series) 8. Policy Updates (Time Series) ┌──────────────────────────────────────────────────────────────────────────────┐ │ GHERKIN SCENARIOS (11 Total) │ └──────────────────────────────────────────────────────────────────────────────┘ METRICS (3 scenarios): ✅ 1. Prometheus metrics endpoint accessible ✅ 2. Metrics increment on policy evaluation ✅ 3. Cache hit metrics by layer TRACING (3 scenarios): 🆕 4. OpenTelemetry span creation 🆕 5. Nested spans track evaluation stages 🆕 6. Batch evaluation tracing LOGGING (3 scenarios): 🆕 7. Structured logs include correlation IDs 🆕 8. Different log events are emitted 🆕 9. Errors logged with full context PERFORMANCE (1 scenario): ⚡ 10. Observability adds <1ms overhead INTEGRATION (1 scenario): ✅ 11. JSON stats endpoint for dashboards ┌──────────────────────────────────────────────────────────────────────────────┐ │ DEPENDENCIES │ └──────────────────────────────────────────────────────────────────────────────┘ Python Packages (requirements.txt): • opentelemetry-api==1.21.0 • opentelemetry-sdk==1.21.0 • opentelemetry-instrumentation-fastapi==0.42b0 • opentelemetry-exporter-otlp==1.21.0 • opentelemetry-exporter-jaeger==1.21.0 (optional) Infrastructure: Development: • Jaeger (docker-compose) for trace visualization • Prometheus (scrape metrics) • Grafana (dashboards) Production: • Google Cloud Trace (GCP native) • Google Cloud Logging (stdout capture) • Prometheus (GKE deployment) ┌──────────────────────────────────────────────────────────────────────────────┐ │ OPEN QUESTIONS (4) │ └──────────────────────────────────────────────────────────────────────────────┘ ❓ 1. OpenTelemetry Backend Configuration Question: Jaeger (dev) + Cloud Trace (prod) or standardize? Blocking: IMPL phase Assigned: DevOps team ❓ 2. Logging Destination Question: GKE auto-collect JSON logs or need additional config? Blocking: IMPL phase Assigned: Infrastructure team ❓ 3. Prometheus Deployment Question: Already deployed in cluster or need new deployment? Blocking: TEST phase (integration tests) Assigned: DevOps team ❓ 4. Performance Testing Environment Question: Where to run benchmarks (local/CI/dedicated)? Blocking: TEST phase Assigned: CTO Agent ┌──────────────────────────────────────────────────────────────────────────────┐ │ 3-PHASE WORKFLOW │ └──────────────────────────────────────────────────────────────────────────────┘ Phase 1: SPEC ✅ COMPLETE [x] Analyze existing implementation [x] Identify gaps (tracing, logging, enhanced metrics) [x] Create comprehensive specification (1328 lines) [x] Document Gherkin scenarios (11 total) [x] Define file structure (7 new, 4 enhanced) [x] Specify performance requirements (<1ms) [x] Design Grafana dashboard (8 panels) [x] Post to Issue #387 with approval request [ ] 🔒 GATE: Awaiting CTO Agent approval [ ] 🔒 GATE: Resolve 4 open questions Phase 2: TEST ⏳ NEXT (After Approval) [ ] Write unit tests for tracing middleware (TDD RED) [ ] Write unit tests for logging formatter (TDD RED) [ ] Write integration tests for enhanced metrics (TDD RED) [ ] Write performance overhead benchmark [ ] Achieve 95%+ test coverage [ ] All tests initially FAIL (RED phase) [ ] Post test evidence to Issue #387 Phase 3: IMPL ⏳ FINAL (After Tests Written) [ ] Implement OpenTelemetry tracing middleware [ ] Implement structured JSON logging [ ] Enhance cedar_metrics.py (decision labels, policy updates) [ ] Integrate tracing/logging into cedar_evaluator.py [ ] Create Grafana dashboard JSON [ ] Update requirements.txt with OpenTelemetry deps [ ] Make all tests PASS (TDD GREEN) [ ] Deploy to dev environment [ ] Verify at https://policy-dev3.heyarchie.com/metrics [ ] Post deployment evidence to Issue #387 [ ] Close Issue #387 with completion evidence ┌──────────────────────────────────────────────────────────────────────────────┐ │ SUCCESS CRITERIA │ └──────────────────────────────────────────────────────────────────────────────┘ ✅ SPEC Phase (Current): [x] Comprehensive specification document (1328 lines) [x] 11 Gherkin scenarios covering all requirements [x] File structure and integration points defined [x] Performance requirements specified (<1ms overhead) [x] Grafana dashboard designed (8 panels) [x] Posted to Issue #387 for review [ ] CTO Agent approval obtained ⏳ [ ] Open questions resolved ⏳ ⏳ TEST Phase (Next): [ ] 95%+ test coverage achieved [ ] All tests initially FAIL (RED phase) [ ] Performance benchmark test created [ ] Test evidence posted to Issue #387 ⏳ IMPL Phase (Final): [ ] All tests PASS (GREEN phase) [ ] <1ms performance overhead verified [ ] /metrics endpoint returns enhanced Prometheus format [ ] Distributed traces visible in Jaeger/Cloud Trace [ ] Structured JSON logs with correlation IDs [ ] Grafana dashboard deployed and functional [ ] Deployed to dev3 and verified working [ ] Issue #387 closed with deployment evidence ┌──────────────────────────────────────────────────────────────────────────────┐ │ DOCUMENTS CREATED │ └──────────────────────────────────────────────────────────────────────────────┘ 📂 Local Files: 1. docs/observability/OBSERVABILITY_SPEC.md (1328 lines) → Complete technical specification 2. OBSERVABILITY_SPEC_SUMMARY.md (400+ lines) → Executive summary for quick review 3. PHASE_1_SPEC_COMPLETE.md (300+ lines) → Phase 1 completion evidence and next steps 🔗 GitHub: 4. Issue #387 Comment → https://github.com/heyarchie-ai/archie-platform-v3/issues/387#issuecomment-3621376581 → Full specification summary with approval request ┌──────────────────────────────────────────────────────────────────────────────┐ │ APPROVAL REQUEST │ └──────────────────────────────────────────────────────────────────────────────┘ TO: CTO Agent, Backend Architect Agent The SPEC phase is complete and ready for review. This specification provides: ✅ Comprehensive Gherkin scenario coverage (11 scenarios) ✅ Detailed technical specs for metrics, tracing, and logging ✅ Performance requirements (<1ms overhead with verification strategy) ✅ Integration points with existing codebase ✅ Grafana dashboard design (8 panels) ✅ Clear file structure (7 new files, 4 enhancements) ✅ Dependencies and infrastructure requirements ✅ 3-phase implementation plan (SPEC → TEST → IMPL) PLEASE REVIEW: • docs/observability/OBSERVABILITY_SPEC.md (full specification) • OBSERVABILITY_SPEC_SUMMARY.md (executive summary) • GitHub Issue #387 comment REQUESTING: Approval to proceed to TEST phase ┌──────────────────────────────────────────────────────────────────────────────┐ │ NEXT ACTIONS │ └──────────────────────────────────────────────────────────────────────────────┘ IMMEDIATE (Blocked on Approval): 1. ⏳ CTO Agent reviews specification 2. ⏳ Infrastructure team answers 4 open questions 3. ⏳ Obtain explicit approval to proceed to TEST phase AFTER APPROVAL (Phase 2: TEST): 1. Create test directory structure 2. Write comprehensive tests (TDD RED) • Unit tests for tracing middleware • Unit tests for logging formatter • Integration tests for enhanced metrics • Performance overhead benchmark 3. Achieve 95%+ test coverage 4. Post test evidence to Issue #387 AFTER TESTS (Phase 3: IMPL): 1. Implement features to make tests PASS (TDD GREEN) 2. Deploy to dev3 environment 3. Verify at https://policy-dev3.heyarchie.com/metrics 4. Post deployment evidence and close Issue #387 ╔══════════════════════════════════════════════════════════════════════════════╗ ║ ║ ║ Status: ✅ PHASE 1 COMPLETE - Awaiting CTO Approval ║ ║ Issue: #387 ║ ║ Agent: Observability Agent ║ ║ Date: 2025-12-06 ║ ║ ║ ╚══════════════════════════════════════════════════════════════════════════════╝