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johndoe6345789
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Implement comprehensive error handling system for improved production reliability with error boundaries, automatic retry logic, and user-friendly error categorization. ## Features Added ### 1. RetryableErrorBoundary Component (NEW) - Enhanced React error boundary with automatic retry logic - Catches component errors and displays fallback UI - Automatic retry for transient failures (network, timeout, 5xx) - Exponential backoff between retries (1s → 2s → 4s → 8s max) - Retry countdown display with progress indication - Error categorization with visual indicators (icons, colors) - User-friendly error messages based on error type - Developer-friendly error details in development mode - Support contact information in UI - Configurable via props (maxAutoRetries, delays, support email) ### 2. Error Categorization System (ENHANCED) - Automatic error categorization into 10 types: - Network (🌐): Network failures, offline, connection errors - Authentication (🔐): Auth/session errors (401) - Permission (🚫): Access denied (403) - Validation (⚠️): Invalid input (400) - Not Found (🔍): Resource not found (404) - Conflict (⚡): Duplicate/conflict (409) - Rate Limit (⏱️): Too many requests (429) - Server (🖥️): Server errors (5xx) - Timeout (⏳): Request timeout (408) - Unknown (⚠️): All other errors - Automatic retry eligibility detection - Suggested recovery actions per category - Color-coded UI based on error type ### 3. Enhanced Error Reporting Service - Error categorization with HTTP status code detection - Pattern-based error type detection - Retry eligibility determination - Context-specific user messages - Query errors by category - Track error history (last 100 errors) - Production monitoring hook (placeholder for Sentry/DataDog) ### 4. Async Error Boundary Utilities (NEW) - withAsyncErrorBoundary(): Wrap async operations with retry logic - fetchWithErrorBoundary(): Fetch with automatic retry - tryAsyncOperation(): Safe async wrapper that never throws - useAsyncErrorHandler(): React hook for async error handling - Exponential backoff with configurable delays - Timeout support - Error reporting and callbacks ### 5. Root Layout Integration - Wrapped Providers component with RetryableErrorBoundary - Automatic error recovery at application root - 3 automatic retry attempts with exponential backoff - Support contact information displayed ## Files Created 1. frontends/nextjs/src/components/RetryableErrorBoundary.tsx - Main retryable error boundary component - ~450 lines with full error UI, retry logic, and categorization - withRetryableErrorBoundary() HOC for easy component wrapping 2. frontends/nextjs/src/lib/async-error-boundary.ts - Async operation wrappers with retry logic - ~200 lines with multiple utility functions - Integration with error reporting service 3. frontends/nextjs/docs/ERROR_HANDLING.md - Comprehensive error handling guide - 400+ lines of documentation - Usage examples, best practices, common scenarios - Error recovery strategies per category - API reference for all components and utilities 4. frontends/nextjs/src/lib/error-reporting.test.ts - 100+ lines of unit tests - Tests for error categorization - Tests for retry eligibility - Tests for user messages - Tests for error history and queries ## Files Modified 1. frontends/nextjs/src/lib/error-reporting.ts - Added ErrorCategory type with 10 categories - Added error categorization logic - Added retry eligibility detection - Added suggested action generation - Enhanced getUserMessage() with category-specific messages - Added getErrorsByCategory() and getRetryableErrors() methods - Added extractStatusCode() helper 2. frontends/nextjs/src/app/providers/providers-component.tsx - Wrapped children with RetryableErrorBoundary - Configured 3 automatic retries - Enabled support info display ## Key Behaviors ### Automatic Retry Flow 1. Component error occurs or async operation fails 2. Error is caught and categorized 3. If retryable (network, timeout, 5xx): - Schedule automatic retry with exponential backoff - Display countdown: "Retrying in Xs..." - Retry operation 4. If successful: - Reset error state, show success 5. If all retries exhausted: - Show error UI with manual retry button ### Error Message Examples - Network Error: "Network error. Please check your internet connection and try again." - Auth Error: "Your session has expired. Please log in again." - Permission Error: "You do not have permission to perform this action." - Rate Limit: "Too many requests. Please wait a moment and try again." - Server Error: "A server error occurred. Our team has been notified. Please try again later." ### Retry Configuration - Max Auto-Retries: 3 - Initial Delay: 1000ms - Max Delay: 8000ms - Backoff Multiplier: 2 - Retryable Codes: 408, 429, 500, 502, 503, 504 ## Production Readiness ✅ Error categorization covers all common scenarios ✅ User messages are clear and actionable ✅ Retry logic uses proven exponential backoff ✅ Development mode shows full error details ✅ Production mode shows user-friendly messages ✅ Support contact information included ✅ Comprehensive documentation provided ✅ Unit tests for core categorization logic ## Migration Notes Existing ErrorBoundary component remains unchanged for backward compatibility. New RetryableErrorBoundary is recommended for: - Root layout - Admin tools (Schema Editor, Workflow Manager, Database Manager, Script Editor) - API integration layers - Dynamic component renderers ## Next Steps (Phase 5.3+) 1. Wrap admin tool packages with RetryableErrorBoundary 2. Add error boundaries around data table components 3. Integrate with Sentry/DataDog monitoring 4. Add error analytics dashboard 5. A/B test error messages for improvement Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>