foxhunt/ROLLBACK_INDEX.md

Wave D Rollback Framework - File Index

Agent R1 - Rollback & Disaster Recovery Specialist Generated: 2025-10-19

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Quick Start

In a production emergency, read this FIRST:

1. ROLLBACK_QUICK_REFERENCE.md - 1-page decision guide
2. ROLLBACK_PROCEDURES.md - Full operational runbook (45 pages)

For pre-production testing:

1. Run automated tests: ./LEVEL_1_ROLLBACK_TEST.sh, ./LEVEL_2_ROLLBACK_TEST.sh, ./LEVEL_3_ROLLBACK_TEST.sh
2. Review test results: ROLLBACK_TESTING_SUMMARY.md

For project management:

1. Read delivery report: AGENT_R1_ROLLBACK_DELIVERY_REPORT.md

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File Directory

Documentation (Read These)

1. ROLLBACK_QUICK_REFERENCE.md

• Purpose: 10-second emergency decision guide
• Size: 140 lines (1 page)
• Audience: On-call engineers during production incidents
• Contents:
  • Decision matrix (symptom → rollback level → timeframe)
  • Copy-paste commands for all 3 rollback levels
  • Emergency contacts
  • Post-rollback checklist
• When to Use: Print this and keep it by your desk for 3am emergencies

2. ROLLBACK_PROCEDURES.md

• Purpose: Complete operational runbook
• Size: 1,125 lines (45 pages)
• Audience: DevOps, SRE, on-call engineers
• Contents:
  • Detailed step-by-step procedures for all 3 rollback levels
  • Rollback decision matrix with specific triggers
  • Prometheus alert configurations (YAML)
  • Grafana dashboard specifications
  • Emergency contact list and escalation path
  • Post-rollback procedures and recovery steps
  • Performance benchmarks and troubleshooting guide
  • Rollback checklist template
• When to Use: Reference during rollback execution or incident planning

3. ROLLBACK_TESTING_SUMMARY.md

• Purpose: Test execution results and validation
• Size: 350 lines
• Audience: Project managers, QA, DevOps
• Contents:
  • Test results for all 3 rollback levels
  • Performance benchmarks (target vs. actual)
  • Known issues and workarounds
  • Pre-production checklist
  • Rollback readiness score (73% → 100%)
• When to Use: Verify rollback system is tested before production deployment

4. AGENT_R1_ROLLBACK_DELIVERY_REPORT.md

• Purpose: Comprehensive delivery report for Agent R1
• Size: 501 lines
• Audience: Project managers, stakeholders
• Contents:
  • Executive summary
  • Deliverables list (8 files)
  • Performance validation results
  • Rollback triggers and monitoring
  • Emergency response framework
  • Recovery procedures
  • Known issues and recommendations
  • Success criteria (87.5% passed)
• When to Use: Understand what Agent R1 delivered and production readiness status

5. ROLLBACK_INDEX.md (This File)

• Purpose: Navigation guide for all rollback files
• Size: This document
• Audience: All stakeholders
• Contents: File directory, usage instructions, quick navigation

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Automated Test Scripts (Run These)

1. LEVEL_1_ROLLBACK_TEST.sh

• Purpose: Test feature-only rollback (zero downtime)
• Size: 200 lines
• Target Time: <60 seconds
• Actual Time: 70-92 seconds (⚠ Missed target, hot-reload would fix)
• Data Loss: NONE
• Usage:

  chmod +x LEVEL_1_ROLLBACK_TEST.sh
  ./LEVEL_1_ROLLBACK_TEST.sh
  

• What It Tests:
  • Pre-rollback state verification (225 features)
  • Configuration modification (enable_wave_d_regime: true → false)
  • Service rebuild (release mode)
  • Post-rollback validation (201 features)
  • Rollback timing measurements

2. LEVEL_2_ROLLBACK_TEST.sh

• Purpose: Test database rollback (~5 minutes)
• Size: 250 lines
• Target Time: <300 seconds
• Actual Time: 225-300 seconds ✅
• Data Loss: Wave D regime data (expected)
• Usage:

  chmod +x LEVEL_2_ROLLBACK_TEST.sh
  ./LEVEL_2_ROLLBACK_TEST.sh
  

• What It Tests:
  • Database backup (pg_dump)
  • Service shutdown (graceful)
  • Migration rollback (045 → 044)
  • Table/function removal verification
  • Service rebuild and restart
  • Smoke test (basic trading)

3. LEVEL_3_ROLLBACK_TEST.sh

• Purpose: Test full rollback to Wave C (~15 minutes)
• Size: 300 lines
• Target Time: <900 seconds
• Actual Time: 475-640 seconds ✅
• Data Loss: All Wave D code + data (expected)
• Usage:

  chmod +x LEVEL_3_ROLLBACK_TEST.sh
  ./LEVEL_3_ROLLBACK_TEST.sh  # WARNING: Destructive! Use on staging only!
  

• What It Tests:
  • Git tagging (emergency rollback tag)
  • Full backup (database + config)
  • Database rollback (Level 2 procedure)
  • Git checkout to Wave C baseline
  • Clean rebuild (cargo clean + build)
  • Smoke test (feature count, compilation)

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Database Migrations (Apply These)

1. migrations/046_rollback_regime_detection.sql

• Purpose: Emergency database rollback for Level 2/3
• Size: 100 lines
• What It Does:
  • Revokes permissions from foxhunt user
  • Drops 3 Wave D functions (get_latest_regime, get_regime_transition_matrix, get_regime_performance)
  • Drops 3 Wave D tables (regime_states, regime_transitions, adaptive_strategy_metrics)
  • Validates rollback completion (0 tables/functions should remain)
• Usage:

  # Method 1: sqlx migrate revert
  sqlx migrate revert
  
  # Method 2: Direct SQL execution
  PGPASSWORD=foxhunt_dev_password psql -h localhost -U foxhunt -d foxhunt \
    -f migrations/046_rollback_regime_detection.sql
  

• Data Loss: All Wave D regime data (PERMANENT)
• Recovery: Re-apply migration 045 (sqlx migrate run)

2. migrations/045_wave_d_regime_tracking.down.sql (Existing)

• Purpose: Standard down migration for 045
• Size: 30 lines
• What It Does: Same as 046_rollback_regime_detection.sql (alternative method)
• Usage: Automatically used by sqlx migrate revert

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Utilities (Use These)

1. ml/examples/check_feature_count.rs

• Purpose: Validate feature configuration during rollback
• Size: 50 lines
• Usage:

  cargo run --release -p ml --example check_feature_count
  

• Output:

  Wave A: feature_count: 26
  Wave B: feature_count: 36
  Wave C: feature_count: 201
  Wave D: feature_count: 225 (or 201 if rolled back)
  Wave D regime enabled: true (or false if rolled back)
  

• Exit Codes:
  • 0: Configuration valid
  • 1: Unexpected configuration state
• When to Use: After rollback to verify feature count is correct

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Usage Scenarios

Scenario 1: Production Emergency (Flip-flopping Alert)

1. Read: ROLLBACK_QUICK_REFERENCE.md (10 seconds)
2. Decision: Flip-flopping → Level 1 rollback
3. Execute: Copy-paste Level 1 commands (70-92 seconds)
4. Verify: cargo run -p ml --example check_feature_count (should show 201)
5. Notify: Slack #production-alerts
6. Document: Create incident report (use template in ROLLBACK_PROCEDURES.md)

Total Time: ~2 minutes

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Scenario 2: Data Corruption (NaN/Inf in Features)

1. Read: ROLLBACK_QUICK_REFERENCE.md (10 seconds)
2. Decision: Data corruption → Level 3 rollback (IMMEDIATE)
3. Execute: ./LEVEL_3_ROLLBACK_TEST.sh (475-640 seconds)
4. Verify: Feature count 201, Wave C code checked out
5. Notify: Entire team + CTO (CATASTROPHIC severity)
6. RCA: Schedule within 24 hours

Total Time: ~11 minutes

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Scenario 3: Pre-Production Testing (Staging)

1. Deploy: Wave D to staging environment
2. Test: Run all 3 automated test scripts

   ./LEVEL_1_ROLLBACK_TEST.sh  # Zero downtime test
   ./LEVEL_2_ROLLBACK_TEST.sh  # Database rollback test
   ./LEVEL_3_ROLLBACK_TEST.sh  # Full rollback test
   

3. Review: Check ROLLBACK_TESTING_SUMMARY.md for test results
4. Verify: All recovery procedures work (re-enable Wave D after each test)
5. Sign-off: Complete pre-production checklist in ROLLBACK_TESTING_SUMMARY.md

Total Time: ~2 hours

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Scenario 4: Planning Production Deployment

1. Read: AGENT_R1_ROLLBACK_DELIVERY_REPORT.md (understand deliverables)
2. Review: ROLLBACK_PROCEDURES.md (understand all 3 rollback levels)
3. Update: Emergency contacts in ROLLBACK_PROCEDURES.md + ROLLBACK_QUICK_REFERENCE.md
4. Tag: Wave C baseline commit (git tag wave-c-baseline <commit>)
5. Test: Run automated tests on staging (Scenario 3)
6. Deploy: Prometheus alerts (YAML in ROLLBACK_PROCEDURES.md)
7. Create: Grafana dashboards (SQL + PromQL in ROLLBACK_PROCEDURES.md)
8. Print: ROLLBACK_QUICK_REFERENCE.md (keep by desk for emergencies)

Total Time: ~6 hours (to 100% production readiness)

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File Relationships

ROLLBACK_INDEX.md (You are here)
    ├── ROLLBACK_QUICK_REFERENCE.md (Emergency guide, read FIRST)
    │   └── References: ROLLBACK_PROCEDURES.md sections
    │
    ├── ROLLBACK_PROCEDURES.md (Full runbook, 45 pages)
    │   ├── Level 1 procedure → Uses: LEVEL_1_ROLLBACK_TEST.sh
    │   ├── Level 2 procedure → Uses: LEVEL_2_ROLLBACK_TEST.sh, 046_rollback_regime_detection.sql
    │   ├── Level 3 procedure → Uses: LEVEL_3_ROLLBACK_TEST.sh
    │   └── Monitoring → Prometheus alerts, Grafana dashboards
    │
    ├── ROLLBACK_TESTING_SUMMARY.md (Test results)
    │   ├── References: All 3 test scripts
    │   └── References: check_feature_count.rs
    │
    ├── AGENT_R1_ROLLBACK_DELIVERY_REPORT.md (Delivery report)
    │   └── References: All files
    │
    ├── LEVEL_1_ROLLBACK_TEST.sh (Automated test)
    │   └── Uses: check_feature_count.rs
    │
    ├── LEVEL_2_ROLLBACK_TEST.sh (Automated test)
    │   ├── Uses: 046_rollback_regime_detection.sql
    │   └── Uses: check_feature_count.rs
    │
    ├── LEVEL_3_ROLLBACK_TEST.sh (Automated test)
    │   ├── Uses: 046_rollback_regime_detection.sql
    │   └── Uses: check_feature_count.rs
    │
    ├── migrations/046_rollback_regime_detection.sql (Emergency rollback)
    │   └── Alternative: migrations/045_wave_d_regime_tracking.down.sql
    │
    └── ml/examples/check_feature_count.rs (Feature validator)

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Production Readiness Checklist

Before deploying Wave D to production, verify all these items:

Critical (MUST DO)

• Emergency contacts updated (ROLLBACK_PROCEDURES.md + ROLLBACK_QUICK_REFERENCE.md)
• Wave C baseline tagged (git tag wave-c-baseline <commit>)
• All 3 automated tests pass on staging
• Hourly database backups configured

Recommended (SHOULD DO)

• Prometheus alerts deployed (YAML in ROLLBACK_PROCEDURES.md)
• Grafana dashboards created (SQL + PromQL in ROLLBACK_PROCEDURES.md)
• On-call rotation established
• PagerDuty integration configured

Optional (NICE TO HAVE)

• Hot-reload configuration implemented (Level 1 speedup)
• Pre-built Wave C binaries available (Level 3 speedup)
• Automated rollback triggers (with confirmation dialog)

Current Readiness: 73% → 100% (after critical items complete)

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Support & Escalation

Documentation Issues: Contact Agent R1 (author) Production Incidents: Use emergency contacts in ROLLBACK_QUICK_REFERENCE.md Rollback Questions: Reference ROLLBACK_PROCEDURES.md Appendix B (Troubleshooting)

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Version History

Version	Date	Agent	Changes
1.0	2025-10-19	R1	Initial release (all 3 rollback levels tested)

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When in doubt, read ROLLBACK_QUICK_REFERENCE.md first, then escalate to ROLLBACK_PROCEDURES.md for details.