agnav/agmission
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
30c4bc3c3e
agmission/Development/server/docs/archived/TASK_TRACKER_IMPLEMENTATION_SUMMARY.md

9.2 KiB
Raw Blame History

TaskTracker Implementation Summary

✅ Completed Steps

1. Immediate: Architecture Diagrams Moved

  • ✅ Moved PARTNER_DLQ_ARCHITECTURE_DIAGRAMS.md → DLQ_ARCHITECTURE_DIAGRAMS.md to current docs
  • ✅ Updated all documentation references
  • ✅ Updated DOCUMENTATION_INDEX.md links

2. Short-term: Core Implementation Complete

3. Status Values Standardized

  • ✅ All status values lowercase: 'queued', 'processing', 'completed', 'failed', 'dlq', 'archived'
  • ✅ Consistent across TaskTracker, PartnerLogTracker, and documentation
  • ✅ ErrorCategory values also lowercase: 'transient', 'validation', etc.

🔄 Next Steps (Medium-term)

✅ Phase 2: Partner Queue Integration (COMPLETED)

Status: Fully implemented and tested
Date Completed: 2025-01-14
Test Results: All integration tests pass (Exit Code: 0)

Files Modified:

  1. ✅ workers/partner_data_polling_worker.js - Deduplication at enqueue
  2. ✅ workers/partner_sync_worker.js - Idempotency and status tracking

Implementation Details: See TASK_TRACKER_INTEGRATION_PLAN.md

Key Features Implemented:

  • ✅ Deduplication: Prevent duplicate enqueues via taskId check (5-minute window)
  • ✅ Idempotency: Prevent duplicate processing via atomic claim (taskId + executionId)
  • ✅ Success tracking: Update TaskTracker to 'completed' with result metadata
  • ✅ Error tracking: Update TaskTracker with error details and categorization
  • ✅ Tracing: Complete retry history via taskId query
  • ✅ Parallel tracking: Both TaskTracker and PartnerLogTracker updated independently

Test Coverage:

  • ✅ Task ID generation (deterministic)
  • ✅ Execution ID generation (unique)
  • ✅ Deduplication logic
  • ✅ Idempotency logic
  • ✅ Success handler
  • ✅ Error handler with categorization
  • ✅ Retry chain tracing
  • ✅ DLQ status tracking
  • ✅ Parallel tracking consistency

Test Script: tests/test_phase2_integration.js

⏸️ Future Steps (Long-term)

Phase 3: Validation Period (2-4 weeks)

  • Run both trackers side-by-side
  • Validate data consistency
  • Monitor performance metrics
  • Collect production data

Phase 4: Switch to TaskTracker (1 week)

  • Update APIs to query TaskTracker
  • Update monitoring dashboards
  • Keep PartnerLogTracker as fallback

Phase 5: Deprecate PartnerLogTracker (3+ months)

  • Remove PartnerLogTracker updates from workers
  • Archive old data
  • Remove model and indexes

Phase 6: Expand to All Queues

  • Roll out TaskTracker to:
    • dev_jobs / jobs queue
    • dev_notifications / notifications queue (if created)
    • Any future queue types
  • Per-queue rollout following same phases

Key Design Decisions

Why 2 Keys Instead of 3?

Traditional (3 keys):

  • taskId (business identity)
  • idempotencyKey (execution identity)
  • correlationId (trace chain)

Simplified (2 keys):

  • taskId (business identity + trace chain)
  • executionId (execution identity)

Benefit: The taskId ITSELF serves as correlationId! Query { taskId } returns complete retry chain.

Parallel Tracking Strategy

  • Run both PartnerLogTracker and TaskTracker simultaneously
  • Validate consistency before switching
  • Zero-downtime migration
  • Easy rollback if issues arise

No Breaking Changes

  • Existing PartnerLogTracker remains fully functional
  • TaskTracker adds new capabilities without removing old ones
  • Workers updated incrementally

Files Structure

server/
├── model/
│   ├── task_tracker.js              ✅ NEW - Universal task tracking model
│   └── partner_log_tracker.js       (existing - will deprecate later)
├── services/
│   └── task_id_generator.js         ✅ NEW - TaskId/ExecutionId generator
├── workers/
│   ├── partner_data_polling_worker.js  (modify - add TaskTracker)
│   └── partner_sync_worker.js          (modify - add TaskTracker)
├── tests/
│   └── test_task_tracker_2key.js    ✅ NEW - Test 2-key design
└── docs/
    ├── TASK_TRACKER_2KEY_DESIGN.md           ✅ NEW - Architecture doc
    ├── TASK_TRACKER_INTEGRATION_PLAN.md     ✅ NEW - Implementation plan
    ├── TASK_TRACKER_IMPLEMENTATION_SUMMARY.md ✅ NEW - This file
    ├── PARTNER_TASK_DATA_FLOW_ANALYSIS.md   (updated with TaskTracker)
    └── DLQ_ARCHITECTURE_DIAGRAMS.md         (moved from archived)

Testing Commands

# Run TaskTracker test (demonstrates 2-key design)
node tests/test_task_tracker_2key.js

# Expected output:
# ✓ taskId generation (deterministic)
# ✓ executionId generation (unique per attempt)
# ✓ Deduplication works
# ✓ Idempotency works (atomic claim)
# ✓ Retry chain tracing (no correlationId needed!)

API Examples

Enqueue with Deduplication

const { generateTaskId, generateExecutionId } = require('./services/task_id_generator');
const TaskTracker = require('./model/task_tracker');

// Generate IDs
const taskId = generateTaskId('dev_partner_tasks', {
  partnerCode: 'SATLOC',
  aircraftId: '695d',
  logId: '02220710'
});
// => "partner_tasks:SATLOC:695d:02220710"

// Check for duplicate
const existing = await TaskTracker.findOne({
  taskId,
  status: { $in: ['queued', 'processing'] }
});

if (existing) {
  console.log('Already queued/processing, skip');
  return;
}

// Create new tracker
const executionId = generateExecutionId();
await TaskTracker.create({ taskId, executionId, ... });

Process with Idempotency

// Atomic claim (prevents duplicate processing)
const tracker = await TaskTracker.findOneAndUpdate(
  { taskId, executionId, status: { $in: ['queued', 'failed'] } },
  { $set: { status: 'processing' } },
  { new: true }
);

if (!tracker) {
  console.log('Already processed by another worker');
  return;
}

// Process task...

Trace Retry Chain

// Find complete history - single query!
const history = await TaskTracker.find({ taskId })
  .sort({ createdAt: 1 })
  .lean();

// Returns all attempts automatically
history.forEach((attempt, i) => {
  console.log(`Attempt ${i + 1}:`, attempt.status, attempt.errorMessage);
});

Benefits Achieved

Feature Old System New System
Deduplication Manual checks Built-in via taskId
Idempotency Complex logic Atomic via taskId + executionId
Tracing Not available Automatic via taskId
Universal Partner-specific Works for ALL queues
Keys N/A (no formal system) 2 keys (simplified)
Query Speed N/A Indexed for performance
Retry Chain Manual reconstruction Single query

Migration Safety

Zero-Risk Approach

  1. Phase 1: Build new system alongside old (DONE)
  2. Phase 2: Run in parallel for validation (NEXT)
  3. Phase 3: Validate consistency (FUTURE)
  4. Phase 4: Switch reads, keep writes dual (FUTURE)
  5. Phase 5: Deprecate old system (DISTANT FUTURE)

Rollback at Any Phase

  • Phase 2: Remove TaskTracker calls, deploy previous version
  • Phase 3: Stop validation, continue parallel tracking
  • Phase 4: Switch back to PartnerLogTracker queries
  • Phase 5: Re-enable PartnerLogTracker updates

No data loss possible - old system remains functional throughout.

Success Metrics

  • TaskTracker model created and tested
  • Task ID generator service functional
  • Documentation complete
  • Integration in partner_tasks queue (Phase 2)
  • 2-4 weeks validation period (Phase 3)
  • API switch complete (Phase 4)
  • Old system deprecated (Phase 5)
  • Rolled out to all queues (Phase 6)

Quick Links

Current Phase: ✅ Phase 1 Complete | 🔄 Phase 2 Ready
Next Action: Implement Phase 2 worker modifications
Last Updated: January 21, 2026