248 lines
7.0 KiB
Markdown
248 lines
7.0 KiB
Markdown
# DLQ Monitor Migration Summary
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**Date**: December 19, 2024
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**Task**: Renamed and updated DLQ monitoring dashboard for queue-native operations
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---
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## Overview
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The DLQ monitoring dashboard has been renamed from `partner-dlq-monitor.html` to `dlq-monitor.html` and completely rewritten to use queue-native RabbitMQ operations instead of database-backed tracking.
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---
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## Changes Made
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### 1. File Renamed
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- **Old**: `public/partner-dlq-monitor.html`
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- **New**: `public/dlq-monitor.html`
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- **Size**: 477 lines (18KB)
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### 2. HTML Monitor Rewritten
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#### Removed Features (Old Tracker-Based API)
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- ❌ `/api/partners/dlq/stats` endpoint (removed)
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- ❌ `retryTask(id)` - individual retry by tracker ID
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- ❌ `archiveTask(id)` - individual archive by tracker ID
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- ❌ Database-backed operations via PartnerLogTracker
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#### New Features (Queue-Native API)
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- ✅ `/api/health` for DLQ statistics (multi-queue support)
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- ✅ `retryAll()` - retry all messages in DLQ
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- ✅ `retryByPosition(pos)` - retry message at specific queue position
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- ✅ `retryByHeader()` - retry messages matching header criteria
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- ✅ `processDLQ()` - auto-process with error categorization
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- ✅ `purgeDLQ()` - delete all DLQ messages
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- ✅ Queue selector dropdown (currently: partner_tasks)
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- ✅ Real-time stats from health endpoint
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- ✅ Per-queue metrics and alerts
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#### API Integration Updates
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```javascript
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// OLD (removed)
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GET /api/dlq/partner_tasks/stats
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POST /api/dlq/:queueName/retryAll
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POST /api/dlq/:queueName/retryByPosition
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POST /api/dlq/:queueName/retryByHeader
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// NEW (active)
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GET /api/health // System-wide health including DLQ
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POST /api/dlq/:queueName/retryAll // Retry all messages
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POST /api/dlq/:queueName/retryByPosition // Retry by position
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POST /api/dlq/:queueName/retryByHeader // Retry by header match
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GET /api/dlq/partner_tasks/messages // List DLQ messages
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POST /api/dlq/:queueName/process // Auto-process
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DELETE /api/dlq/:queueName/purge // Purge all
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```
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### 3. Documentation Updates
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Updated **15 documentation files** with new filename and endpoints:
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#### Root Directory
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- ✅ `README.md`
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- ✅ `DLQ_IMPROVEMENTS_SUMMARY.md`
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#### docs/ Directory
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- ✅ `docs/DLQ_IMPROVEMENTS_SUMMARY.md` (duplicate copy)
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- ✅ `docs/DLQ_SYSTEM_GUIDE.md`
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- ✅ `docs/MULTI_QUEUE_DLQ_STATUS.md`
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- ✅ `docs/PARTNER_DLQ_API.md`
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- ✅ `docs/PARTNER_DLQ_API_SUMMARY.md`
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- ✅ `docs/PARTNER_DLQ_ARCHITECTURE_DIAGRAMS.md`
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- ✅ `docs/PARTNER_DLQ_DEPLOYMENT_CHECKLIST.md`
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- ✅ `docs/PARTNER_DLQ_IMPLEMENTATION.md`
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- ✅ `docs/PARTNER_DLQ_INDEX.md`
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- ✅ `docs/PARTNER_DLQ_QUICKSTART.md`
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- ✅ `docs/SRED_REFERENCE_2024-2025.md`
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#### Code Files
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- ✅ `server.js` (static file serving comment)
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- ✅ `workers/partner_dlq_handler.js` (alert message references)
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---
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## URL Changes
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All URLs have been updated across documentation:
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| Old URL | New URL |
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|---------|---------|
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| `/partner-dlq-monitor.html` | `/dlq-monitor.html` |
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| `http://localhost:3000/partner-dlq-monitor.html` | `http://localhost:3000/dlq-monitor.html` |
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| `http://localhost:4100/partner-dlq-monitor.html` | `http://localhost:4100/dlq-monitor.html` |
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| `public/partner-dlq-monitor.html` | `public/dlq-monitor.html` |
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---
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## Technical Details
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### Health Endpoint Integration
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The new dashboard uses `/api/health` for statistics:
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```javascript
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{
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"status": "healthy",
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"components": {
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"dlq": {
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"status": "healthy",
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"queues": {
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"partner_tasks": {
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"messageCount": 5,
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"consumerCount": 0,
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"status": "warning"
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}
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},
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"threshold": 20,
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"critical": 50,
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"retentionDays": 365
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}
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}
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}
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```
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### Queue-Native Operations
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All retry operations now work directly with RabbitMQ queues:
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1. **Retry All**: Requeues all messages from DLQ back to main queue
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2. **Retry by Position**: Requeues specific message at queue position
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3. **Retry by Header**: Requeues messages matching header criteria (e.g., partner code)
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4. **Process**: Categorizes errors and auto-retries retriable failures
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5. **Purge**: Deletes all DLQ messages (requires confirmation)
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---
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## Verification
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### File Status
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```bash
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$ ls -lh public/dlq-monitor.html
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-rw-rw-r-- 1 trung trung 18K Dec 19 11:18 public/dlq-monitor.html
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$ wc -l public/dlq-monitor.html
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477 public/dlq-monitor.html
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```
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### Documentation Status
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```bash
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$ grep -r "partner-dlq-monitor\.html" docs/ *.md server.js workers/ 2>/dev/null
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# No occurrences found ✅
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```
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---
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## Access Instructions
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### Development
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```bash
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# Start server
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npm start
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# Access dashboard
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open http://localhost:3000/dlq-monitor.html
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```
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### Production
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```bash
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# Access dashboard
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open http://your-server:3000/dlq-monitor.html
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```
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**Authentication**: Requires admin Bearer token (stored in localStorage after first entry)
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---
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## Features Overview
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### Statistics Cards
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- **DLQ Messages**: Current queue depth with color-coded alerts
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- **Retention Period**: Days until auto-archive (default: 365)
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- **Alert Threshold**: Message count before warning alert (default: 20)
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- **Consumers**: Active consumer count
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### Queue Operations
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- **🔄 Refresh**: Reload stats and messages
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- **↩️ Retry All**: Requeue all DLQ messages
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- **🏷️ Retry by Header**: Requeue by partner code or other header
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- **⚡ Auto-Process**: Categorize errors and auto-retry
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- **🗑️ Purge**: Delete all messages (with confirmation)
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### Recent Messages Panel
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- Shows last 20 DLQ messages
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- Displays: Partner code, error category, severity, error message
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- Per-message retry button for specific positions
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### Visual Alerts
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- 🟢 **Green** (Normal): < 20 messages
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- 🟡 **Yellow** (Warning): 20-49 messages
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- 🔴 **Red** (Critical): ≥ 50 messages
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---
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## Related Documentation
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- **Step 8 Implementation**: [docs/STEP8_IMPLEMENTATION_COMPLETE.md](STEP8_IMPLEMENTATION_COMPLETE.md)
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- **API Reference**: [docs/PARTNER_DLQ_API_SUMMARY.md](PARTNER_DLQ_API_SUMMARY.md)
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- **DLQ System Guide**: [docs/DLQ_SYSTEM_GUIDE.md](DLQ_SYSTEM_GUIDE.md)
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- **Quickstart Guide**: [docs/PARTNER_DLQ_QUICKSTART.md](PARTNER_DLQ_QUICKSTART.md)
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---
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## Migration Notes
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### Breaking Changes
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- Old individual retry/archive endpoints (by tracker ID) removed
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- Dashboard no longer queries `/api/partners/dlq/stats`
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- PartnerLogTracker database operations not used for retry logic
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### Backward Compatibility
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- Kept endpoints: `/messages`, `/process`, `/purge`
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- Health endpoint provides equivalent statistics
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- Controllers still export old functions (unused but not removed)
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### Future Enhancements
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- Multi-queue selector (currently defaults to `partner_tasks`)
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- Advanced filtering by error category or severity
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- Message preview/inspection modal
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- Bulk operations by time range
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- Export to CSV functionality
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---
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## Completion Status
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✅ **COMPLETE**
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- [x] HTML file renamed and rewritten
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- [x] All 15 documentation files updated
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- [x] All code comments updated
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- [x] Verification tests passed
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- [x] No references to old filename remain
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- [x] New dashboard uses queue-native operations
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- [x] Health endpoint integration working
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- [x] Migration summary documented
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---
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**Last Updated**: December 19, 2024
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