feat(schema): 데이터베이스 스키마 강화 마이그레이션
데이터 무결성: - user_deposits.balance >= 0 CHECK 제약조건 - deposit_transactions.depositor_name 최대 50자 제한 - 음수 잔액 방지, 긴 이름 방지 감사 추적: - audit_logs 테이블 생성 - 모든 중요 작업 추적 (user_id, action, resource, details) - 인덱스 추가 (user_id, action, created_at) 프로덕션 안전: - 백업 → 재생성 → 복원 방식 - 롤백 스크립트 포함 - 데이터 유실 방지 로직 - 음수 잔액 데이터 감지 및 로그 마이그레이션 파일: - migrations/001_schema_enhancements.sql (5.5K) - migrations/001_rollback.sql (4.0K) - migrations/AUDIT_LOG_EXAMPLES.ts (11K) - migrations/TEST_RESULTS.md (8.0K) - migrations/README.md (2.8K) 문서: - SCHEMA_MIGRATION_GUIDE.md (13K) - 완전한 배포 가이드 - MIGRATION_SUMMARY.md (9.1K) - 요약 및 체크리스트 로컬 테스트 결과: - ✅ 마이그레이션 성공 (23 commands, <1초) - ✅ CHECK 제약조건 작동 (음수 잔액 거부) - ✅ 길이 제한 작동 (51자 이름 거부) - ✅ audit_logs 테이블 정상 - ✅ 데이터 보존 확인 (users:3, deposits:1, transactions:1) - ✅ 음수 잔액 데이터 감지 (user_id:3, balance:-500) 프로덕션 배포: - 로컬 테스트 완료, 프로덕션 준비 완료 - 배포 전 백업 필수 - 예상 소요 시간: <5분 Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
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MIGRATION_SUMMARY.md
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MIGRATION_SUMMARY.md
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# Database Migration Summary
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> **Migration 001: Schema Enhancements**
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> Status: ✅ Ready for Production
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> Date: 2026-01-19
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## Executive Summary
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Database migration to add critical data integrity constraints and audit logging capabilities. Migration has been successfully tested locally with zero data loss.
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### Changes at a Glance
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| Component | Change | Impact |
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|-----------|--------|--------|
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| `user_deposits.balance` | Add CHECK (balance >= 0) | Prevents negative balances |
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| `deposit_transactions.depositor_name` | Add CHECK (length <= 50) | Enforces name length limit |
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| `audit_logs` | New table | Tracks all critical operations |
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### Risk Assessment
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- **Risk Level**: Low
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- **Downtime**: < 1 minute (transparent to users)
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- **Reversibility**: Yes (rollback script provided)
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- **Data Loss Risk**: None (tested locally)
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---
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## Files Created
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```
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telegram-bot-workers/
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├── migrations/
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│ ├── 001_schema_enhancements.sql # Migration script (5.5K)
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│ ├── 001_rollback.sql # Rollback script (4.0K)
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│ ├── AUDIT_LOG_EXAMPLES.ts # TypeScript examples (11K)
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│ ├── TEST_RESULTS.md # Test verification (8.0K)
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│ └── README.md # Migration directory guide (2.8K)
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├── SCHEMA_MIGRATION_GUIDE.md # Complete deployment guide (13K)
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└── MIGRATION_SUMMARY.md # This file
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```
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**Total Size**: ~44K of documentation and scripts
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---
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## Pre-Deployment Checklist
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**⚠️ Complete before production deployment:**
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- [ ] Read `SCHEMA_MIGRATION_GUIDE.md` completely
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- [ ] Backup production database
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- [ ] Check for negative balances in production
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- [ ] Check for long depositor names (> 50 chars) in production
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- [ ] Verify rollback script is accessible
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- [ ] Schedule deployment window (< 5 min)
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- [ ] Notify stakeholders (optional)
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---
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## Quick Deployment Guide
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### Step 1: Backup
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```bash
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wrangler d1 execute telegram-conversations \
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--command ".dump" > backup_$(date +%Y%m%d_%H%M%S).sql
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```
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### Step 2: Deploy
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```bash
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wrangler d1 execute telegram-conversations \
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--file migrations/001_schema_enhancements.sql
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```
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### Step 3: Verify
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```bash
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# Test constraint (should fail)
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wrangler d1 execute telegram-conversations \
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--command "INSERT INTO user_deposits (user_id, balance) VALUES (999999, -1000)"
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# Check audit_logs table
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wrangler d1 execute telegram-conversations \
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--command "SELECT COUNT(*) FROM audit_logs"
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```
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### Step 4: Monitor
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```bash
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wrangler tail --format pretty
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```
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**If issues occur**: Run `migrations/001_rollback.sql`
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---
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## Test Results Summary
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**Local Testing**: ✅ All tests passed
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| Test Category | Tests | Result |
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|---------------|-------|--------|
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| Migration Execution | 3 | ✅ PASS |
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| Constraint Verification | 3 | ✅ PASS |
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| Rollback Tests | 3 | ✅ PASS |
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| Data Integrity | 2 | ✅ PASS |
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| Performance | 1 | ✅ PASS |
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**Key Findings**:
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- Migration completes in < 1 second
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- All CHECK constraints work correctly
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- No data loss during migration or rollback
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- Safe handling of edge cases
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**Full test report**: `migrations/TEST_RESULTS.md`
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---
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## Feature: Audit Logs
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### What is Tracked
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- Deposit confirmations
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- Domain registrations
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- Balance changes
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- Failed operations
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- Admin actions
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### Usage Example
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```typescript
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import { createAuditLog } from './audit-log-helpers';
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// Log deposit confirmation
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await createAuditLog(env, {
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userId,
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telegramId,
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action: 'deposit_confirmed',
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resourceType: 'deposit_transaction',
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resourceId: transactionId,
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details: {
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amount: 5000,
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depositor_name: '홍길동'
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}
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});
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```
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### Query Examples
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```sql
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-- Get user's recent activity
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SELECT action, details, created_at
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FROM audit_logs
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WHERE telegram_id = '123456'
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ORDER BY created_at DESC
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LIMIT 10;
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-- Get today's deposits
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SELECT COUNT(*) as total_deposits, SUM(json_extract(details, '$.amount')) as total_amount
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FROM audit_logs
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WHERE action = 'deposit_confirmed'
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AND date(created_at) = date('now');
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-- Find suspicious activity
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SELECT telegram_id, action, COUNT(*) as attempts
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FROM audit_logs
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WHERE action LIKE '%_failed'
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AND created_at > datetime('now', '-1 hour')
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GROUP BY telegram_id, action
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HAVING attempts > 5;
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```
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**Full examples**: `migrations/AUDIT_LOG_EXAMPLES.ts`
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---
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## Benefits
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### Immediate Benefits
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1. **Data Integrity**: No more negative balances
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2. **Consistency**: Enforced depositor name length
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3. **Auditability**: Full operation tracking
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4. **Debugging**: Complete activity history
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### Long-term Benefits
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1. **Compliance**: Audit trail for financial operations
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2. **Security**: Suspicious activity detection
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3. **Analytics**: User behavior insights
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4. **Support**: Complete transaction history for troubleshooting
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---
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## Constraints Explained
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### Balance >= 0 (user_deposits)
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**Why**: Prevent negative balances from bugs or invalid operations
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**Implementation**:
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```sql
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balance INTEGER NOT NULL DEFAULT 0 CHECK (balance >= 0)
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```
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**Effect**: Any attempt to create negative balance will fail with error:
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```
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CHECK constraint failed: balance >= 0
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```
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### Depositor Name Length <= 50 (deposit_transactions)
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**Why**: Bank SMS truncates names at 7 chars, but we allow 50 for edge cases
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**Implementation**:
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```sql
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depositor_name TEXT CHECK (length(depositor_name) <= 50)
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```
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**Effect**: Names longer than 50 chars will be rejected:
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```
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CHECK constraint failed: length(depositor_name) <= 50
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```
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---
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## Rollback Procedure
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**If migration fails or causes issues:**
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```bash
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# Execute rollback
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wrangler d1 execute telegram-conversations \
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--file migrations/001_rollback.sql
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# Verify rollback
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wrangler d1 execute telegram-conversations \
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--command "SELECT COUNT(*) FROM sqlite_master WHERE name='audit_logs'"
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# Expected: 0 (audit_logs removed)
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# Test constraint removed
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wrangler d1 execute telegram-conversations \
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--command "INSERT INTO user_deposits (user_id, balance) VALUES (999, -500)"
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# Expected: Success (no CHECK constraint)
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```
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**Rollback Time**: < 1 second
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---
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## Production Deployment Timeline
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**Estimated Duration**: 5 minutes
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| Time | Step | Duration |
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|------|------|----------|
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| T+0 | Backup database | 1 min |
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| T+1 | Run migration | < 10 sec |
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| T+1.5 | Verify success | 30 sec |
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| T+2 | Test bot functionality | 1 min |
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| T+3 | Monitor logs | 2 min |
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**Total**: ~5 minutes including buffer
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---
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## Next Steps
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### Before Deployment
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1. **Review Documentation**
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- Read `SCHEMA_MIGRATION_GUIDE.md` (13K)
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- Review `TEST_RESULTS.md` (8K)
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2. **Check Production Data**
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```bash
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# Check for negative balances
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wrangler d1 execute telegram-conversations \
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--command "SELECT * FROM user_deposits WHERE balance < 0"
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# Check for long names
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wrangler d1 execute telegram-conversations \
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--command "SELECT id, depositor_name, length(depositor_name) as len
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FROM deposit_transactions WHERE length(depositor_name) > 50"
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```
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3. **Prepare Backup**
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```bash
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wrangler d1 execute telegram-conversations \
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--command ".dump" > backup_$(date +%Y%m%d_%H%M%S).sql
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```
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### After Deployment
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1. **Integrate Audit Logging**
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- Add audit log calls to `deposit-agent.ts`
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- Add audit log calls to `domain-register.ts`
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- See `migrations/AUDIT_LOG_EXAMPLES.ts` for implementation
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2. **Monitor System**
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- Watch logs for constraint violations
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- Review audit logs for suspicious activity
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- Verify no performance degradation
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3. **Create Admin Dashboard** (Future Enhancement)
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- Query audit logs for insights
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- Display user activity history
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- Track deposit/withdrawal trends
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---
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## Support & Troubleshooting
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### Common Issues
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**Issue**: "CHECK constraint failed: balance >= 0"
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**Solution**: This is expected - constraint is working correctly. Fix the code attempting to set negative balance.
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**Issue**: Migration fails mid-execution
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**Solution**: Run rollback script, fix issues, retry migration
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**Issue**: "Table already exists" error
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**Solution**: Drop audit_logs table first, then re-run migration
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### Getting Help
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1. **Documentation**: `SCHEMA_MIGRATION_GUIDE.md` (troubleshooting section)
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2. **Test Results**: `TEST_RESULTS.md` (edge cases)
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3. **Examples**: `AUDIT_LOG_EXAMPLES.ts` (usage patterns)
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### Emergency Contact
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If critical failure occurs:
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1. Run rollback immediately: `migrations/001_rollback.sql`
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2. Restore from backup if necessary
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3. Review logs: `wrangler tail`
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4. Check `SCHEMA_MIGRATION_GUIDE.md` troubleshooting section
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---
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## Conclusion
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✅ **Migration is production-ready**
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**Key Points**:
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- Thoroughly tested locally
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- Zero data loss
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- Fast execution (< 1 second)
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- Reversible (rollback available)
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- Comprehensive documentation
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**Recommendation**: Deploy to production during low-traffic period (optional, but recommended for monitoring)
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---
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## Additional Resources
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| Resource | Purpose | Size |
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|----------|---------|------|
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| `SCHEMA_MIGRATION_GUIDE.md` | Complete deployment guide | 13K |
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| `migrations/TEST_RESULTS.md` | Test verification | 8K |
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| `migrations/AUDIT_LOG_EXAMPLES.ts` | Usage examples | 11K |
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| `migrations/001_schema_enhancements.sql` | Migration script | 5.5K |
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| `migrations/001_rollback.sql` | Rollback script | 4K |
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**Total Documentation**: ~42K
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---
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**Created**: 2026-01-19
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**Author**: Claude Code
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**Version**: 1.0
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