skywatch/OBSERVABILITY.md

Real-Time Updates & Observability Implementation

🟢 Completed Features

1. Real-Time WebSocket Push Notifications

Server-Side Enhancements (server/index.js):

• Enhanced Broadcast Functions: Created 4 specialized broadcast functions
  • broadcastDashboardUpdate() - Dashboard state changes
  • broadcastAlert() - Real-time alerts
  • broadcastIncident() - Incident updates (started/resolved)
  • broadcastMetrics() - Performance metrics updates
• Message Types: Structured WebSocket messages with typed payloads
  • type: 'dashboard' - Full dashboard refresh
  • type: 'alert' - Individual alerts
  • type: 'incident' - Incident lifecycle events
  • type: 'metrics' - Performance metrics

Client-Side Enhancements (client/src/App.js):

• Enhanced WebSocket Handler: Receives and processes all message types
• Real-Time Notifications UI: Fixed toast notifications appear in top-right corner
  • Auto-dismiss after 5 seconds
  • Color-coded by severity (error/success/info)
  • Non-blocking, stacks vertically
• Automatic Dashboard Refresh: Refreshes on incident events for real-time data

2. Application Metrics Tracking

New Module: server/metrics.js

• API Request Tracking:
  • Endpoint, method, status code, response time
  • Per-endpoint aggregation with min/max/average times
  • Success/error counts and status code breakdown
• Error Tracking:
  • Centralized error logging with stack traces
  • Context capture (method, URL, IP address)
  • Error count aggregation
• Metrics API Endpoint: GET /api/observability/metrics
  • Server uptime
  • API statistics (request counts, success rates, response times)
  • Error counts (total and unique)

3. Audit Logging System

New Module: server/auditLog.js

• Audit Event Tracking:
  • log() - Generic audit event logging
  • logResourceChange() - Resource CRUD events
  • logSettingsChange() - Configuration changes
  • logGroupChange() - Group management
  • logMaintenanceChange() - Maintenance window events
• Event Details Captured:
  • Action (create/update/delete)
  • Entity type and ID
  • User ID and IP address
  • Changes before/after values
  • Timestamp
• Audit Log Query API: GET /api/observability/audit-logs
  • Filters: entityType, entityId, userId, action, dateRange
  • Summary statistics (events by action type)
• Audit Summary: GET /api/observability/audit-summary
  • 7-day activity breakdown by action

Database Integration:

• Audit Logs Table: Stores all audit events with indexes
• Error Logs Table: Stores application errors with stack traces

4. Error Tracking & Logging

Features:

• Error Collection: Automatic error capture in metrics middleware
• Error Storage: Database persistence for error analysis
• Recent Errors API: GET /api/observability/errors
  • Returns last 50 errors with context
  • Includes stack traces for debugging

5. Observability Dashboard (client/src/Observability.js)

Tabs:

1. API Metrics Tab:

   • Server uptime display
   • Total API requests counter
   • Error metrics
   • Per-endpoint performance table with:
     • Total requests
     • Success rate %
     • Average/min/max response times
     • Status code distribution

2. Errors Tab:

   • Recent errors list
   • Error message, context, and timestamp
   • Visual error log with syntax highlighting

3. Audit Logs Tab:

   • 7-day activity summary
   • Filterable audit log table
   • Filters: Entity Type, Entity ID, User ID, Action
   • Change history tracking

Navigation:

• Added "Observability" link to main navbar
• Accessible from dashboard navigation

6. Comprehensive Middleware Integration

Request Tracking Middleware:

- Intercepts all API requests/responses
- Tracks endpoint, method, status code, duration
- Captures errors automatically
- Non-intrusive integration

Database Schema Updates (server/database.js):

• audit_logs table: Action, entity type/ID, user, changes, IP, timestamp
• error_logs table: Error message, stack trace, context, occurrence timestamp
• Indexes: Optimized queries for audit and error lookups

7. Resource CRUD Audit Logging

Automatic Audit Logs:

• Resource creation: Logs name, URL, type, enabled status
• Resource updates: Logs all changed fields
• Resource deletion: Logs deleted resource details
• Includes user/IP context for all operations

8. New API Endpoints

Authentication Endpoints:

• GET /api/auth/csrf-token - Generate CSRF tokens
• POST /api/auth/refresh-token - JWT token refresh
• POST /api/auth/validate-password - Password strength checking

Observability Endpoints:

• GET /api/observability/metrics - Performance metrics
• GET /api/observability/errors - Error logs (last 50)
• GET /api/observability/audit-logs - Searchable audit logs
• GET /api/observability/audit-summary - Activity summary

---

🎯 Real-Time Update Flow

Monitor Check Complete
    ↓
Incident Created/Resolved
    ↓
Server broadcasts via WebSocket:
  - broadcastDashboardUpdate()
  - broadcastIncident(incident)
    ↓
Client receives message
    ↓
Show toast notification
    ↓
Refresh dashboard data
    ↓
UI updates in real-time

---

📊 Observability Coverage

What's Now Tracked:

• ✅ API performance (response times, success rates)
• ✅ Application errors (messages, stacks, context)
• ✅ User actions (resource CRUD, settings changes)
• ✅ System health (uptime, resource counts)
• ✅ Configuration changes (who, what, when)

Available Dashboards:

1. API Metrics: Performance insights and endpoint health
2. Error Tracking: Centralized error log with debugging info
3. Audit Logs: Complete change history with filters

---

💾 Data Retention

• Error Logs: Stored indefinitely (consider adding cleanup job)
• Audit Logs: Stored indefinitely (consider adding cleanup job)
• Metrics: In-memory (resets on server restart)

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🔐 Security Notes

• IP addresses captured for all audit events
• Error logs may contain sensitive data (review periodically)
• Audit logs provide full change history for compliance
• WebSocket messages sent to all connected clients (consider auth)

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🚀 Next Steps

1. Error Log Cleanup: Add job to archive old error logs (> 90 days)
2. Audit Log Retention: Implement archive for old audit logs
3. Real-time Metrics Push: Broadcast metrics via WebSocket to Observability tab
4. Performance Alerts: Add threshold-based alerts in metrics
5. Export Audit Reports: PDF/CSV export of audit logs
6. Metrics Dashboard Charts: Add charts for error rate trends, response time trends

---

📝 Files Modified/Created

New Files:

• server/metrics.js - Metrics collection
• server/auditLog.js - Audit logging
• client/src/Observability.js - Observability dashboard

Modified Files:

• server/database.js - Added audit_logs and error_logs tables
• server/index.js - Added metrics middleware, observability endpoints, enhanced WebSocket
• client/src/App.js - Added notification UI, enhanced WebSocket handler, Observability route

No Breaking Changes:

• All existing functionality preserved
• Backward compatible API
• Optional observability features