refactor(lease): centralized LeaseManager decouples heartbeats from poll loop#400
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refactor(lease): centralized LeaseManager decouples heartbeats from poll loop#400
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…oll loop Replace inline heartbeat logic in TaskRunner with a process-wide LeaseManager singleton. A background daemon thread checks for due heartbeats at ~1s intervals and dispatches them to a ThreadPoolExecutor(4), so heartbeat API calls and retries never block task polling. Key changes: - LeaseManager: singleton with background thread + thread pool, fork-safe via PID check, lazy start on first track() call - TaskRunner: delegates to LeaseManager.track/untrack instead of inline _send_due_heartbeats/_send_heartbeat methods - task_handler.py: clean — no LeaseManager knowledge needed - 21 unit tests covering track/untrack, heartbeat dispatch, retries, non-blocking behavior, singleton/fork safety, thread safety Co-Authored-By: Claude Sonnet 4.6 (1M context) <noreply@anthropic.com>
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bradyyie
approved these changes
Apr 20, 2026
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Summary
TaskRunnerandAsyncTaskRunnerwith a process-wideLeaseManagersingletonThreadPoolExecutor(4)— heartbeat API calls and retries never block task pollingtrack()calltask_handler.pystays clean — no LeaseManager knowledge neededWhat changed
lease_tracker.pyLeaseManagerclass (singleton, background thread, thread pool, retry logic)task_runner.py_send_due_heartbeats/_send_heartbeat, delegates toLeaseManager.track/untrackasync_task_runner.pyTaskResourceApifor LeaseManager (heartbeats run in thread pool, not event loop)test_lease_manager.pyTest plan
pytest tests/unit/ -x -q)🤖 Generated with Claude Code