community-ade/docs/task-status-gamma.md

Task Status: Worker Pool & Execution (Task 3)

Agent: Coder-Gamma Status: complete Worktree: /home/ani/Projects/community-ade-wt/worker-pool

Completed Files:

Source Files (src/):

1. src/worker/Pool.ts - Worker pool orchestrator

   • Spawns and manages multiple worker processes
   • Task queue with priority support
   • Auto-scaling based on workload
   • Graceful shutdown handling
   • Comprehensive statistics and health reporting

2. src/worker/Process.ts - Individual worker process wrapper

   • Child_process fork management
   • Worker state machine (IDLE, RUNNING, STOPPING, etc.)
   • Task assignment and lifecycle tracking
   • Heartbeat and health monitoring hooks
   • Event-based communication with parent

3. src/worker/HealthMonitor.ts - Health checks and restart logic

   • Configurable health check intervals (default: 5s)
   • Heartbeat timeout detection (default: 30s)
   • Task stall detection (default: 5 min)
   • Automatic worker restart on failure
   • Consecutive failure tracking before restart

4. src/worker/TaskExecutor.ts - Task execution in workers

   • Task handler registration system
   • Built-in task types (echo, compute, delay, healthCheck, executeCode, executeShell)
   • Task timeout handling
   • Progress reporting support
   • Heartbeat generation

5. src/worker/WorkerScript.ts - Example worker entry point

   • Demonstrates task executor setup
   • Registers built-in and example tasks

6. src/index.ts - Module exports

Test Files (tests/): 7. tests/worker/Pool.test.ts - Comprehensive worker lifecycle tests

• Pool creation and initialization
• Worker lifecycle (spawn, restart, exit)
• Task execution (single, concurrent, priority)
• Scaling up/down
• Graceful shutdown
• Statistics reporting

Configuration Files: 8. package.json - TypeScript dependencies and scripts 9. tsconfig.json - TypeScript configuration 10. jest.config.js - Test configuration 11. tests/setup.ts - Test setup

Key Features Implemented:

✅ Worker Pool Management:

• Configurable min/max worker counts
• Auto-scaling based on queue depth
• Graceful shutdown with task completion wait

✅ Process Management:

• Child_process fork for each worker
• Worker state tracking (IDLE, RUNNING, STOPPING, etc.)
• Automatic respawn on unexpected exit

✅ Health Monitoring:

• Health checks every 5 seconds
• Heartbeat tracking (30s timeout)
• Task stall detection
• Automatic restarts after 3 consecutive failures

✅ Task Execution:

• Priority queue support
• Task timeout handling
• Progress reporting
• Built-in task types for common operations

✅ Worker Messages:

• heartbeat - Health check response
• task_complete - Successful task completion
• task_failed - Task execution failure
• task_progress - Progress updates
• ready - Worker ready signal

Blockers:

None

Next:

Integration with other components (Queue Core from Task 1, API Contracts from Task 2)

Time Remaining:

0 minutes - Task complete

---

Completion Command:

git add -A && git commit -m "worker-pool: Process management and health monitoring"