Matthew Raymer
6 days ago
4 changed files with 912 additions and 449 deletions
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# Migration Fence Definition: Dexie to SQLite |
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## Overview |
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|
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This document defines the **migration fence** - the boundary between the legacy Dexie (IndexedDB) storage system and the new SQLite-based storage system in TimeSafari. The fence ensures controlled migration while maintaining data integrity and application stability. |
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## Current Migration Status |
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### ✅ Completed Components |
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- **SQLite Database Service**: Fully implemented with absurd-sql |
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- **Platform Service Layer**: Unified database interface across platforms |
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- **Migration Tools**: Data comparison and transfer utilities |
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- **Schema Migration**: Complete table structure migration |
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- **Data Export/Import**: Backup and restore functionality |
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|
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### 🔄 Active Migration Components |
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- **Settings Migration**: Core user settings transferred |
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- **Account Migration**: Identity and key management |
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- **Contact Migration**: User contact data (via import interface) |
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|
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### ❌ Legacy Components (Fence Boundary) |
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- **Dexie Database**: Legacy IndexedDB storage (disabled by default) |
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- **Dexie-Specific Code**: Direct database access patterns |
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- **Legacy Migration Paths**: Old data transfer methods |
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|
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## Migration Fence Definition |
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### 1. Configuration Boundary |
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```typescript |
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// src/constants/app.ts |
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export const USE_DEXIE_DB = false; // FENCE: Controls legacy database access |
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``` |
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**Fence Rule**: When `USE_DEXIE_DB = false`: |
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- All new data operations use SQLite |
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- Legacy Dexie database is not initialized |
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- Migration tools are the only path to legacy data |
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**Fence Rule**: When `USE_DEXIE_DB = true`: |
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- Legacy database is available for migration |
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- Dual-write operations may be enabled |
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- Migration tools can access both databases |
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|
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### 2. Service Layer Boundary |
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```typescript |
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// src/services/PlatformServiceFactory.ts |
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export class PlatformServiceFactory { |
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public static getInstance(): PlatformService { |
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// FENCE: All database operations go through platform service |
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// No direct Dexie access outside migration tools |
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} |
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} |
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``` |
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**Fence Rule**: All database operations must use: |
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- `PlatformService.dbQuery()` for read operations |
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- `PlatformService.dbExec()` for write operations |
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- No direct `db.` or `accountsDBPromise` access in application code |
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### 3. Data Access Patterns |
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#### ✅ Allowed (Inside Fence) |
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```typescript |
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// Use platform service for all database operations |
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const platformService = PlatformServiceFactory.getInstance(); |
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const contacts = await platformService.dbQuery( |
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"SELECT * FROM contacts WHERE did = ?", |
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[accountDid] |
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); |
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``` |
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#### ❌ Forbidden (Outside Fence) |
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```typescript |
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// Direct Dexie access (legacy pattern) |
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const contacts = await db.contacts.where('did').equals(accountDid).toArray(); |
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// Direct database reference |
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const result = await accountsDBPromise; |
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``` |
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### 4. Migration Tool Boundary |
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```typescript |
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// src/services/indexedDBMigrationService.ts |
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// FENCE: Only migration tools can access both databases |
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export async function compareDatabases(): Promise<DataComparison> { |
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// This is the ONLY place where both databases are accessed |
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} |
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``` |
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**Fence Rule**: Migration tools are the exclusive interface between: |
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- Legacy Dexie database |
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- New SQLite database |
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- Data comparison and transfer operations |
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## Migration Fence Guidelines |
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### 1. Code Development Rules |
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#### New Feature Development |
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- **Always** use `PlatformService` for database operations |
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- **Never** import or reference Dexie directly |
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- **Always** test with `USE_DEXIE_DB = false` |
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#### Legacy Code Maintenance |
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- **Only** modify Dexie code for migration purposes |
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- **Always** add migration tests for schema changes |
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- **Never** add new Dexie-specific features |
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### 2. Data Integrity Rules |
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#### Migration Safety |
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- **Always** create backups before migration |
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- **Always** verify data integrity after migration |
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- **Never** delete legacy data until verified |
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#### Rollback Strategy |
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- **Always** maintain ability to rollback to Dexie |
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- **Always** preserve migration logs |
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- **Never** assume migration is irreversible |
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### 3. Testing Requirements |
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#### Migration Testing |
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```typescript |
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// Required test pattern for migration |
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describe('Database Migration', () => { |
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it('should migrate data without loss', async () => { |
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// 1. Enable Dexie |
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// 2. Create test data |
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// 3. Run migration |
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// 4. Verify data integrity |
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// 5. Disable Dexie |
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}); |
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}); |
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``` |
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#### Application Testing |
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```typescript |
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// Required test pattern for application features |
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describe('Feature with Database', () => { |
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it('should work with SQLite only', async () => { |
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// Test with USE_DEXIE_DB = false |
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// Verify all operations use PlatformService |
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}); |
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}); |
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``` |
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## Migration Fence Enforcement |
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### 1. Static Analysis |
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#### ESLint Rules |
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```json |
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{ |
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"rules": { |
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"no-restricted-imports": [ |
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"error", |
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{ |
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"patterns": [ |
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{ |
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"group": ["../db/index"], |
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"message": "Use PlatformService instead of direct Dexie access" |
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} |
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] |
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} |
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] |
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} |
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} |
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``` |
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#### TypeScript Rules |
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```json |
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{ |
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"compilerOptions": { |
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"strict": true, |
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"noImplicitAny": true |
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} |
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} |
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``` |
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### 2. Runtime Checks |
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#### Development Mode Validation |
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```typescript |
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// Development-only fence validation |
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if (import.meta.env.DEV && USE_DEXIE_DB) { |
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console.warn('⚠️ Dexie is enabled - migration mode active'); |
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} |
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``` |
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#### Production Safety |
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```typescript |
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// Production fence enforcement |
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if (import.meta.env.PROD && USE_DEXIE_DB) { |
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throw new Error('Dexie cannot be enabled in production'); |
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} |
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``` |
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## Migration Fence Timeline |
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### Phase 1: Fence Establishment ✅ |
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- [x] Define migration fence boundaries |
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- [x] Implement PlatformService layer |
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- [x] Create migration tools |
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- [x] Set `USE_DEXIE_DB = false` by default |
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### Phase 2: Data Migration 🔄 |
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- [x] Migrate core settings |
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- [x] Migrate account data |
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- [ ] Complete contact migration |
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- [ ] Verify all data integrity |
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### Phase 3: Code Cleanup 📋 |
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- [ ] Remove unused Dexie imports |
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- [ ] Clean up legacy database code |
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- [ ] Update all documentation |
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- [ ] Remove migration tools |
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### Phase 4: Fence Removal 🎯 |
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- [ ] Remove `USE_DEXIE_DB` constant |
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- [ ] Remove Dexie dependencies |
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- [ ] Remove migration service |
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- [ ] Finalize SQLite-only architecture |
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## Security Considerations |
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### 1. Data Protection |
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- **Encryption**: Maintain encryption standards across migration |
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- **Access Control**: Preserve user privacy during migration |
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- **Audit Trail**: Log all migration operations |
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### 2. Error Handling |
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- **Graceful Degradation**: Handle migration failures gracefully |
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- **User Communication**: Clear messaging about migration status |
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- **Recovery Options**: Provide rollback mechanisms |
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## Performance Considerations |
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### 1. Migration Performance |
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- **Batch Operations**: Use transactions for bulk data transfer |
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- **Progress Indicators**: Show migration progress to users |
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- **Background Processing**: Non-blocking migration operations |
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### 2. Application Performance |
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- **Query Optimization**: Optimize SQLite queries for performance |
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- **Indexing Strategy**: Maintain proper database indexes |
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- **Memory Management**: Efficient memory usage during migration |
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## Documentation Requirements |
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### 1. Code Documentation |
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- **Migration Fence Comments**: Document fence boundaries in code |
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- **API Documentation**: Update all database API documentation |
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- **Migration Guides**: Comprehensive migration documentation |
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### 2. User Documentation |
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- **Migration Instructions**: Clear user migration steps |
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- **Troubleshooting**: Common migration issues and solutions |
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- **Rollback Instructions**: How to revert if needed |
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## Conclusion |
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The migration fence provides a controlled boundary between legacy and new database systems, ensuring: |
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- **Data Integrity**: No data loss during migration |
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- **Application Stability**: Consistent behavior across platforms |
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- **Development Clarity**: Clear guidelines for code development |
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- **Migration Safety**: Controlled and reversible migration process |
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This fence will remain in place until all data is successfully migrated and verified, at which point the legacy system can be safely removed. |
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@ -0,0 +1,355 @@ |
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# Database Migration Security Audit Checklist |
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## Overview |
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This document provides a comprehensive security audit checklist for the Dexie to SQLite migration in TimeSafari. The checklist ensures that data protection, privacy, and security are maintained throughout the migration process. |
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## Pre-Migration Security Assessment |
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### 1. Data Classification and Sensitivity |
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- [ ] **Data Inventory** |
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- [ ] Identify all sensitive data types (DIDs, private keys, personal information) |
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- [ ] Document data retention requirements |
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- [ ] Map data relationships and dependencies |
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- [ ] Assess data sensitivity levels (public, internal, confidential, restricted) |
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- [ ] **Encryption Assessment** |
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- [ ] Verify current encryption methods for sensitive data |
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- [ ] Document encryption keys and their management |
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- [ ] Assess encryption strength and compliance |
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- [ ] Plan encryption migration strategy |
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### 2. Access Control Review |
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- [ ] **User Access Rights** |
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- [ ] Audit current user permissions and roles |
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- [ ] Document access control mechanisms |
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- [ ] Verify principle of least privilege |
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- [ ] Plan access control migration |
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- [ ] **System Access** |
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- [ ] Review database access patterns |
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- [ ] Document authentication mechanisms |
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- [ ] Assess session management |
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- [ ] Plan authentication migration |
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### 3. Compliance Requirements |
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- [ ] **Regulatory Compliance** |
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- [ ] Identify applicable regulations (GDPR, CCPA, etc.) |
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- [ ] Document data processing requirements |
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- [ ] Assess privacy impact |
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- [ ] Plan compliance verification |
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- [ ] **Industry Standards** |
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- [ ] Review security standards compliance |
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- [ ] Document security controls |
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- [ ] Assess audit requirements |
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- [ ] Plan standards compliance |
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## Migration Security Controls |
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### 1. Data Protection During Migration |
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- [ ] **Encryption in Transit** |
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- [ ] Verify all data transfers are encrypted |
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- [ ] Use secure communication protocols (TLS 1.3+) |
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- [ ] Implement secure API endpoints |
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- [ ] Monitor encryption status |
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- [ ] **Encryption at Rest** |
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- [ ] Maintain encryption for stored data |
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- [ ] Verify encryption key management |
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- [ ] Test encryption/decryption processes |
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- [ ] Document encryption procedures |
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### 2. Access Control During Migration |
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- [ ] **Authentication** |
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- [ ] Maintain user authentication during migration |
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- [ ] Verify session management |
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- [ ] Implement secure token handling |
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- [ ] Monitor authentication events |
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- [ ] **Authorization** |
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- [ ] Preserve user permissions during migration |
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- [ ] Verify role-based access control |
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- [ ] Implement audit logging |
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- [ ] Monitor access patterns |
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### 3. Data Integrity |
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- [ ] **Data Validation** |
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- [ ] Implement input validation for all data |
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- [ ] Verify data format consistency |
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- [ ] Test data transformation processes |
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- [ ] Document validation rules |
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- [ ] **Data Verification** |
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- [ ] Implement checksums for data integrity |
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- [ ] Verify data completeness after migration |
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- [ ] Test data consistency checks |
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- [ ] Document verification procedures |
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## Migration Process Security |
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### 1. Backup Security |
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- [ ] **Backup Creation** |
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- [ ] Create encrypted backups before migration |
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- [ ] Verify backup integrity |
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- [ ] Store backups securely |
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- [ ] Test backup restoration |
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- [ ] **Backup Access** |
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- [ ] Limit backup access to authorized personnel |
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- [ ] Implement backup access logging |
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- [ ] Verify backup encryption |
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- [ ] Document backup procedures |
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### 2. Migration Tool Security |
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- [ ] **Tool Authentication** |
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- [ ] Implement secure authentication for migration tools |
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- [ ] Verify tool access controls |
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- [ ] Monitor tool usage |
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- [ ] Document tool security |
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- [ ] **Tool Validation** |
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- [ ] Verify migration tool integrity |
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- [ ] Test tool security features |
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- [ ] Validate tool outputs |
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- [ ] Document tool validation |
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### 3. Error Handling |
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- [ ] **Error Security** |
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- [ ] Implement secure error handling |
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- [ ] Avoid information disclosure in errors |
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- [ ] Log security-relevant errors |
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- [ ] Document error procedures |
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- [ ] **Recovery Security** |
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- [ ] Implement secure recovery procedures |
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- [ ] Verify recovery data protection |
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- [ ] Test recovery processes |
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- [ ] Document recovery security |
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## Post-Migration Security |
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### 1. Data Verification |
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- [ ] **Data Completeness** |
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- [ ] Verify all data was migrated successfully |
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- [ ] Check for data corruption |
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- [ ] Validate data relationships |
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- [ ] Document verification results |
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- [ ] **Data Accuracy** |
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- [ ] Verify data accuracy after migration |
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- [ ] Test data consistency |
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- [ ] Validate data integrity |
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- [ ] Document accuracy checks |
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### 2. Access Control Verification |
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- [ ] **User Access** |
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- [ ] Verify user access rights after migration |
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- [ ] Test authentication mechanisms |
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- [ ] Validate authorization rules |
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- [ ] Document access verification |
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- [ ] **System Access** |
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- [ ] Verify system access controls |
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- [ ] Test API security |
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- [ ] Validate session management |
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- [ ] Document system security |
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### 3. Security Testing |
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- [ ] **Penetration Testing** |
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- [ ] Conduct security penetration testing |
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- [ ] Test for common vulnerabilities |
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- [ ] Verify security controls |
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- [ ] Document test results |
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- [ ] **Vulnerability Assessment** |
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- [ ] Scan for security vulnerabilities |
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- [ ] Assess security posture |
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- [ ] Identify security gaps |
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- [ ] Document assessment results |
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## Monitoring and Logging |
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### 1. Security Monitoring |
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- [ ] **Access Monitoring** |
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- [ ] Monitor database access patterns |
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- [ ] Track user authentication events |
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- [ ] Monitor system access |
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- [ ] Document monitoring procedures |
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- [ ] **Data Monitoring** |
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- [ ] Monitor data access patterns |
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- [ ] Track data modification events |
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- [ ] Monitor data integrity |
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- [ ] Document data monitoring |
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### 2. Security Logging |
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- [ ] **Audit Logging** |
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- [ ] Implement comprehensive audit logging |
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- [ ] Log all security-relevant events |
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- [ ] Secure log storage and access |
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- [ ] Document logging procedures |
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- [ ] **Log Analysis** |
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- [ ] Implement log analysis tools |
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- [ ] Monitor for security incidents |
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- [ ] Analyze security trends |
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- [ ] Document analysis procedures |
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## Incident Response |
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### 1. Security Incident Planning |
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- [ ] **Incident Response Plan** |
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- [ ] Develop security incident response plan |
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- [ ] Define incident response procedures |
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- [ ] Train incident response team |
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- [ ] Document response procedures |
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|
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- [ ] **Incident Detection** |
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- [ ] Implement incident detection mechanisms |
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- [ ] Monitor for security incidents |
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- [ ] Establish incident reporting procedures |
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- [ ] Document detection procedures |
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### 2. Recovery Procedures |
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- [ ] **Data Recovery** |
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- [ ] Develop data recovery procedures |
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- [ ] Test recovery processes |
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- [ ] Verify recovery data integrity |
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- [ ] Document recovery procedures |
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|
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- [ ] **System Recovery** |
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- [ ] Develop system recovery procedures |
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- [ ] Test system recovery |
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- [ ] Verify system security after recovery |
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- [ ] Document recovery procedures |
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|
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## Compliance Verification |
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|
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### 1. Regulatory Compliance |
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|
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- [ ] **Privacy Compliance** |
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- [ ] Verify GDPR compliance |
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- [ ] Check CCPA compliance |
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- [ ] Assess other privacy regulations |
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- [ ] Document compliance status |
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|
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- [ ] **Security Compliance** |
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- [ ] Verify security standard compliance |
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- [ ] Check industry requirements |
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- [ ] Assess security certifications |
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- [ ] Document compliance status |
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### 2. Audit Requirements |
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- [ ] **Audit Trail** |
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- [ ] Maintain comprehensive audit trail |
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- [ ] Verify audit log integrity |
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- [ ] Test audit log accessibility |
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- [ ] Document audit procedures |
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|
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- [ ] **Audit Reporting** |
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- [ ] Generate audit reports |
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- [ ] Verify report accuracy |
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- [ ] Distribute reports securely |
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- [ ] Document reporting procedures |
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|
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## Documentation and Training |
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### 1. Security Documentation |
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|
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- [ ] **Security Procedures** |
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- [ ] Document security procedures |
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- [ ] Update security policies |
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- [ ] Create security guidelines |
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- [ ] Maintain documentation |
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|
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- [ ] **Security Training** |
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- [ ] Develop security training materials |
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- [ ] Train staff on security procedures |
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- [ ] Verify training effectiveness |
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- [ ] Document training procedures |
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|
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### 2. Ongoing Security |
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|
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- [ ] **Security Maintenance** |
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- [ ] Establish security maintenance procedures |
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- [ ] Schedule security updates |
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- [ ] Monitor security trends |
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- [ ] Document maintenance procedures |
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|
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- [ ] **Security Review** |
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- [ ] Conduct regular security reviews |
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- [ ] Update security controls |
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- [ ] Assess security effectiveness |
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- [ ] Document review procedures |
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## Risk Assessment |
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### 1. Risk Identification |
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- [ ] **Security Risks** |
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- [ ] Identify potential security risks |
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- [ ] Assess risk likelihood and impact |
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- [ ] Prioritize security risks |
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- [ ] Document risk assessment |
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|
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- [ ] **Mitigation Strategies** |
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- [ ] Develop risk mitigation strategies |
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- [ ] Implement risk controls |
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- [ ] Monitor risk status |
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- [ ] Document mitigation procedures |
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|
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### 2. Risk Monitoring |
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|
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- [ ] **Risk Tracking** |
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- [ ] Track identified risks |
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- [ ] Monitor risk status |
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- [ ] Update risk assessments |
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- [ ] Document risk tracking |
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|
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- [ ] **Risk Reporting** |
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- [ ] Generate risk reports |
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- [ ] Distribute risk information |
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- [ ] Update risk documentation |
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- [ ] Document reporting procedures |
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## Conclusion |
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|
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This security audit checklist ensures that the database migration maintains the highest standards of data protection, privacy, and security. Regular review and updates of this checklist are essential to maintain security throughout the migration process and beyond. |
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|
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### Security Checklist Summary |
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|
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- [ ] **Pre-Migration Assessment**: Complete |
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- [ ] **Migration Controls**: Complete |
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- [ ] **Process Security**: Complete |
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- [ ] **Post-Migration Verification**: Complete |
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- [ ] **Monitoring and Logging**: Complete |
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- [ ] **Incident Response**: Complete |
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- [ ] **Compliance Verification**: Complete |
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- [ ] **Documentation and Training**: Complete |
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- [ ] **Risk Assessment**: Complete |
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|
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**Overall Security Status**: [ ] Secure [ ] Needs Attention [ ] Critical Issues |
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|
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**Next Review Date**: _______________ |
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|
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**Reviewed By**: _______________ |
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|
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**Approved By**: _______________ |
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