fleet-memory/hindsight-api-slim/hindsight_api/worker/poller.py
Nicolò Boschi 15ea23d5d6
feat: introduce hindsight-api-slim and hindsight-all-slim packages (#560)
* feat: introduce hindsight-api-slim and hindsight-all-slim packages

Closes #552

- Move all source code from hindsight-api/ to new hindsight-api-slim/
- hindsight-api-slim has heavy ML deps (torch, sentence-transformers,
  transformers, einops, flashrank, mlx, mlx-lm, safetensors) and
  pg0-embedded as optional extras: [local-ml], [embedded-db], [all]
- hindsight-api becomes a zero-code meta-package depending on
  hindsight-api-slim[all] for full backward compatibility
- Add hindsight-all-slim meta-package: hindsight-api-slim + client + embed
- hindsight-all updated to depend on hindsight-api-slim[all]
- pg0.py: lazy-import pg0 with clear ImportError pointing to [embedded-db]
- Dockerfile: replace sed hack with proper uv sync --extra flags
- Update release.yml, test.yml, lint.sh, release.sh, CLAUDE.md and
  all path references throughout the repo

* refactor: rename hindsight/ directory to hindsight-all/

* docs: document hindsight-api-slim and hindsight-all-slim package variants

Add package variants table and extras explanation to installation.md

* docs: remove emojis from installation.md, use professional tone

* docs: link Docker slim variant to pip package variants section

* docs: consolidate Docker image variants into single table

* ci: fix working-directory paths after package restructure

- Replace all hindsight-api → hindsight-api-slim in test.yml
- Replace hindsight → hindsight-all in test.yml
- Add --extra embedded-db to test-embed API install step

* ci: add local-ml and embedded-db extras to API sync steps

These extras were previously implicit in the old hindsight-api package
(which bundled everything). Now that hindsight-api-slim uses optional
extras, we must explicitly request local-ml and embedded-db in CI.

* ci: add API install step with embedded-db to test-embed smoke test

The smoke test starts hindsight-api as a daemon, which requires pg0-embedded.
Add a dedicated install step for hindsight-api-slim with embedded-db extra
so the daemon can start successfully.

* ci: remove --no-install-project when using optional extras

When --no-install-project is combined with --extra, the optional deps
are not installed because extras require the project to be active.
Remove --no-install-project from steps that need local-ml or embedded-db.

* ci: fix ordering of uv sync steps to preserve optional extras

When uv sync runs for a different workspace member, it removes optional
extras installed for other members. Fix by always running extra-requiring
API sync last, after other workspace member syncs.

Also remove --no-install-project from embedded-db sync in test-embed,
as --no-install-project prevents optional extras from being active.

* ci: add local-ml extra to test-embed API install for smoke test

The smoke test starts the full API server which needs sentence-transformers
for local embeddings (default provider). Add local-ml extra to the install.

* ci: simplify extras with --all-extras and add slim pip smoke test

- Replace explicit --extra local-ml --extra embedded-db with --all-extras
  for cleaner, more maintainable sync steps
- Add test-pip-slim job: tests hindsight-api-slim[embedded-db] without
  local ML models, using Cohere for embeddings/reranking (mirrors Docker
  slim smoke test approach)

* ci: simplify slim smoke test to health check only (mirrors Docker test)
2026-03-13 13:50:03 +01:00

703 lines
28 KiB
Python

"""
Worker poller for distributed task execution.
Polls PostgreSQL for pending tasks and executes them using
FOR UPDATE SKIP LOCKED for safe concurrent claiming.
"""
import asyncio
import json
import logging
import time
import traceback
from collections.abc import Awaitable, Callable
from dataclasses import dataclass
from typing import TYPE_CHECKING, Any
from .exceptions import RetryTaskAt
if TYPE_CHECKING:
import asyncpg
from hindsight_api.extensions.tenant import TenantExtension
logger = logging.getLogger(__name__)
# Progress logging interval in seconds
PROGRESS_LOG_INTERVAL = 30
def fq_table(table: str, schema: str | None = None) -> str:
"""Get fully-qualified table name with optional schema prefix."""
if schema:
return f'"{schema}".{table}'
return table
@dataclass
class ClaimedTask:
"""A task claimed from the database with its schema context."""
operation_id: str
task_dict: dict[str, Any]
schema: str | None
class WorkerPoller:
"""
Polls PostgreSQL for pending tasks and executes them.
Uses FOR UPDATE SKIP LOCKED for safe distributed claiming,
allowing multiple workers to process tasks without conflicts.
Supports dynamic multi-tenant discovery via tenant_extension.
"""
def __init__(
self,
pool: "asyncpg.Pool",
worker_id: str,
executor: Callable[[dict[str, Any]], Awaitable[None]],
poll_interval_ms: int = 500,
schema: str | None = None,
tenant_extension: "TenantExtension | None" = None,
max_slots: int = 10,
consolidation_max_slots: int = 2,
):
"""
Initialize the worker poller.
Args:
pool: asyncpg connection pool
worker_id: Unique identifier for this worker
executor: Async function to execute tasks (typically MemoryEngine.execute_task)
poll_interval_ms: Interval between polls when no tasks found (milliseconds)
schema: Database schema for single-tenant support (deprecated, use tenant_extension)
tenant_extension: Extension for dynamic multi-tenant discovery. If None, creates a
DefaultTenantExtension with the configured schema.
max_slots: Maximum concurrent tasks per worker
consolidation_max_slots: Maximum concurrent consolidation tasks per worker
"""
self._pool = pool
self._worker_id = worker_id
self._executor = executor
self._poll_interval_ms = poll_interval_ms
self._schema = schema
# Always set tenant extension (use DefaultTenantExtension if none provided)
if tenant_extension is None:
from ..extensions.builtin.tenant import DefaultTenantExtension
# Pass schema parameter to DefaultTenantExtension if explicitly provided
config = {"schema": schema} if schema else {}
tenant_extension = DefaultTenantExtension(config=config)
self._tenant_extension = tenant_extension
self._max_slots = max_slots
self._consolidation_max_slots = consolidation_max_slots
self._shutdown = asyncio.Event()
self._current_tasks: set[asyncio.Task] = set()
self._in_flight_count = 0
self._in_flight_lock = asyncio.Lock()
self._last_progress_log = 0.0
self._tasks_completed_since_log = 0
# Track active tasks locally: operation_id -> (op_type, bank_id, schema, asyncio.Task)
self._active_tasks: dict[str, tuple[str, str, str | None, asyncio.Task]] = {}
# Track in-flight tasks by operation type
self._in_flight_by_type: dict[str, int] = {}
async def _get_schemas(self) -> list[str | None]:
"""Get list of schemas to poll. Returns [None] for default schema (no prefix)."""
from ..config import DEFAULT_DATABASE_SCHEMA
tenants = await self._tenant_extension.list_tenants()
# Convert default schema to None for SQL compatibility (no prefix), keep others as-is
return [t.schema if t.schema != DEFAULT_DATABASE_SCHEMA else None for t in tenants]
async def _get_available_slots(self) -> tuple[int, int]:
"""
Calculate available slots for claiming tasks.
Returns:
(total_available, consolidation_available) tuple
"""
async with self._in_flight_lock:
total_in_flight = self._in_flight_count
consolidation_in_flight = self._in_flight_by_type.get("consolidation", 0)
total_available = max(0, self._max_slots - total_in_flight)
consolidation_available = max(0, self._consolidation_max_slots - consolidation_in_flight)
return total_available, consolidation_available
async def wait_for_active_tasks(self, timeout: float = 10.0) -> bool:
"""
Wait for all active background tasks to complete (test helper).
This is a test-only utility that allows tests to synchronize with
fire-and-forget background tasks without using sleep().
Args:
timeout: Maximum time to wait in seconds
Returns:
True if all tasks completed, False if timeout was reached
"""
start_time = asyncio.get_event_loop().time()
while True:
async with self._in_flight_lock:
if self._in_flight_count == 0:
return True
elapsed = asyncio.get_event_loop().time() - start_time
if elapsed >= timeout:
return False
# Short sleep to avoid busy-waiting
await asyncio.sleep(0.01)
async def claim_batch(self) -> list[ClaimedTask]:
"""
Claim pending tasks atomically across all tenant schemas,
respecting slot limits (total and consolidation).
Uses FOR UPDATE SKIP LOCKED to ensure no conflicts with other workers.
Returns:
List of ClaimedTask objects containing operation_id, task_dict, and schema
"""
# Calculate available slots
total_available, consolidation_available = await self._get_available_slots()
if total_available <= 0:
return []
schemas = await self._get_schemas()
all_tasks: list[ClaimedTask] = []
remaining_total = total_available
remaining_consolidation = consolidation_available
for schema in schemas:
if remaining_total <= 0:
break
tasks = await self._claim_batch_for_schema(schema, remaining_total, remaining_consolidation)
# Update remaining slots based on what was claimed
for task in tasks:
op_type = task.task_dict.get("operation_type", "unknown")
if op_type == "consolidation":
remaining_consolidation -= 1
all_tasks.extend(tasks)
remaining_total -= len(tasks)
return all_tasks
async def _claim_batch_for_schema(
self, schema: str | None, limit: int, consolidation_limit: int
) -> list[ClaimedTask]:
"""Claim tasks from a specific schema respecting slot limits."""
try:
return await self._claim_batch_for_schema_inner(schema, limit, consolidation_limit)
except Exception as e:
# Format schema for logging: custom schemas in quotes, None as-is
schema_display = f'"{schema}"' if schema else str(schema)
logger.warning(f"Worker {self._worker_id} failed to claim tasks for schema {schema_display}: {e}")
return []
async def _claim_batch_for_schema_inner(
self, schema: str | None, limit: int, consolidation_limit: int
) -> list[ClaimedTask]:
"""Inner implementation for claiming tasks from a specific schema with slot limits."""
table = fq_table("async_operations", schema)
async with self._pool.acquire() as conn:
async with conn.transaction():
# Strategy: Claim non-consolidation tasks first, then consolidation up to limit
# 1. Claim non-consolidation tasks (up to limit)
non_consolidation_rows = await conn.fetch(
f"""
SELECT operation_id, task_payload, retry_count
FROM {table}
WHERE status = 'pending'
AND task_payload IS NOT NULL
AND operation_type != 'consolidation'
AND (next_retry_at IS NULL OR next_retry_at <= NOW())
ORDER BY created_at
LIMIT $1
FOR UPDATE SKIP LOCKED
""",
limit,
)
claimed_count = len(non_consolidation_rows)
remaining_limit = limit - claimed_count
# 2. Claim consolidation tasks (up to consolidation_limit and remaining_limit)
consolidation_rows = []
if consolidation_limit > 0 and remaining_limit > 0:
consolidation_rows = await conn.fetch(
f"""
SELECT operation_id, task_payload, retry_count
FROM {table} AS pending
WHERE status = 'pending'
AND task_payload IS NOT NULL
AND operation_type = 'consolidation'
AND (next_retry_at IS NULL OR next_retry_at <= NOW())
AND NOT EXISTS (
SELECT 1 FROM {table} AS processing
WHERE processing.bank_id = pending.bank_id
AND processing.operation_type = 'consolidation'
AND processing.status = 'processing'
)
ORDER BY created_at
LIMIT $1
FOR UPDATE SKIP LOCKED
""",
min(consolidation_limit, remaining_limit),
)
all_rows = non_consolidation_rows + consolidation_rows
if not all_rows:
return []
# Claim the tasks by updating status and worker_id
operation_ids = [row["operation_id"] for row in all_rows]
await conn.execute(
f"""
UPDATE {table}
SET status = 'processing', worker_id = $1, claimed_at = now(), updated_at = now()
WHERE operation_id = ANY($2)
""",
self._worker_id,
operation_ids,
)
# Parse and return task payloads with schema context
result = []
for row in all_rows:
task_dict = json.loads(row["task_payload"])
task_dict["_retry_count"] = row["retry_count"]
task_dict["_operation_id"] = str(row["operation_id"])
result.append(
ClaimedTask(
operation_id=str(row["operation_id"]),
task_dict=task_dict,
schema=schema,
)
)
return result
async def _mark_completed(self, operation_id: str, schema: str | None):
"""Mark a task as completed."""
table = fq_table("async_operations", schema)
await self._pool.execute(
f"""
UPDATE {table}
SET status = 'completed', completed_at = now(), updated_at = now()
WHERE operation_id = $1
""",
operation_id,
)
async def _mark_failed(self, operation_id: str, error_message: str, schema: str | None):
"""Mark a task as failed with error message."""
table = fq_table("async_operations", schema)
# Truncate error message if too long (max 5000 chars in schema)
error_message = error_message[:5000] if len(error_message) > 5000 else error_message
await self._pool.execute(
f"""
UPDATE {table}
SET status = 'failed', error_message = $2, completed_at = now(), updated_at = now()
WHERE operation_id = $1
""",
operation_id,
error_message,
)
async def _schedule_retry(self, operation_id: str, retry_at: "Any", error_message: str, schema: str | None):
"""Reset task to pending with a future retry timestamp."""
table = fq_table("async_operations", schema)
error_message = error_message[:5000] if len(error_message) > 5000 else error_message
await self._pool.execute(
f"""
UPDATE {table}
SET status = 'pending', next_retry_at = $2, worker_id = NULL, claimed_at = NULL,
retry_count = retry_count + 1, error_message = $3, updated_at = now()
WHERE operation_id = $1
""",
operation_id,
retry_at,
error_message,
)
logger.warning(f"Task {operation_id} scheduled for retry at {retry_at}: {error_message}")
async def execute_task(self, task: ClaimedTask):
"""Execute a single task as a background job (fire-and-forget)."""
task_type = task.task_dict.get("type", "unknown")
operation_type = task.task_dict.get("operation_type", "unknown")
bank_id = task.task_dict.get("bank_id", "unknown")
# Create background task
bg_task = asyncio.create_task(self._execute_task_inner(task))
# Track this task as active
async with self._in_flight_lock:
self._active_tasks[task.operation_id] = (task_type, bank_id, task.schema, bg_task)
self._in_flight_count += 1
self._in_flight_by_type[operation_type] = self._in_flight_by_type.get(operation_type, 0) + 1
# Add cleanup callback
bg_task.add_done_callback(lambda _: asyncio.create_task(self._cleanup_task(task.operation_id, operation_type)))
async def _cleanup_task(self, operation_id: str, operation_type: str):
"""Remove task from tracking after completion."""
async with self._in_flight_lock:
if operation_id in self._active_tasks:
self._active_tasks.pop(operation_id, None)
self._in_flight_count -= 1
count = self._in_flight_by_type.get(operation_type, 0)
if count > 0:
self._in_flight_by_type[operation_type] = count - 1
if self._in_flight_by_type[operation_type] == 0:
del self._in_flight_by_type[operation_type]
async def _execute_task_inner(self, task: ClaimedTask):
"""Inner task execution with retry/fail handling.
Tasks that want to be retried raise RetryTaskAt; the poller sets next_retry_at
and resets status to 'pending'. All other exceptions are marked as failed immediately.
Non-retryable failures (e.g., file_convert_retain) are handled by the executor
internally — it marks the operation as failed and returns normally.
"""
task_type = task.task_dict.get("type", "unknown")
bank_id = task.task_dict.get("bank_id", "unknown")
try:
schema_info = f", schema={task.schema}" if task.schema else ""
logger.debug(f"Executing task {task.operation_id} (type={task_type}, bank={bank_id}{schema_info})")
if task.schema:
task.task_dict["_schema"] = task.schema
await self._executor(task.task_dict)
logger.debug(f"Task {task.operation_id} execution finished")
except RetryTaskAt as e:
await self._schedule_retry(task.operation_id, e.retry_at, str(e), task.schema)
except Exception as e:
logger.error(f"Task {task.operation_id} failed: {e}")
traceback.print_exc()
await self._mark_failed(task.operation_id, str(e), task.schema)
async def recover_own_tasks(self) -> int:
"""
Recover tasks that were assigned to this worker but not completed.
This handles the case where a worker crashes while processing tasks.
On startup, we reset any tasks stuck in 'processing' for this worker_id
back to 'pending' so they can be picked up again.
Also recovers batch API operations that were in-flight.
If tenant_extension is configured, recovers across all tenant schemas.
Returns:
Number of tasks recovered
"""
schemas = await self._get_schemas()
total_count = 0
for schema in schemas:
try:
table = fq_table("async_operations", schema)
# First, recover batch API operations (before resetting worker tasks)
batch_count = await self._recover_batch_operations(schema)
total_count += batch_count
# Then reset normal worker tasks
result = await self._pool.execute(
f"""
UPDATE {table}
SET status = 'pending', worker_id = NULL, claimed_at = NULL, updated_at = now()
WHERE status = 'processing' AND worker_id = $1 AND result_metadata->>'batch_id' IS NULL
""",
self._worker_id,
)
# Parse "UPDATE N" to get count
count = int(result.split()[-1]) if result else 0
total_count += count
except Exception as e:
# Format schema for logging: custom schemas in quotes, None as-is
schema_display = f'"{schema}"' if schema else str(schema)
logger.warning(f"Worker {self._worker_id} failed to recover tasks for schema {schema_display}: {e}")
if total_count > 0:
logger.info(f"Worker {self._worker_id} recovered {total_count} stale tasks from previous run")
return total_count
async def _recover_batch_operations(self, schema: str | None) -> int:
"""
Recover batch API operations that were in-flight when worker crashed.
Finds operations with batch_id in metadata and re-submits them as tasks
so polling can resume.
Args:
schema: Database schema to recover from
Returns:
Number of batch operations recovered
"""
table = fq_table("async_operations", schema)
try:
# Find operations with batch_id in metadata (batch API operations)
rows = await self._pool.fetch(
f"""
SELECT operation_id, task_payload, result_metadata
FROM {table}
WHERE status = 'processing'
AND result_metadata ? 'batch_id'
AND task_payload IS NOT NULL
"""
)
if not rows:
return 0
recovered = 0
for row in rows:
operation_id = str(row["operation_id"])
task_payload = row["task_payload"]
result_metadata = row["result_metadata"]
# Parse metadata
if isinstance(result_metadata, str):
result_metadata = json.loads(result_metadata)
batch_id = result_metadata.get("batch_id")
batch_provider = result_metadata.get("batch_provider", "openai")
logger.info(
f"Recovering batch operation: operation_id={operation_id}, batch_id={batch_id}, provider={batch_provider}"
)
# Parse task_payload
if isinstance(task_payload, str):
task_dict = json.loads(task_payload)
else:
task_dict = task_payload
# Mark operation as ready for re-processing
# Reset to pending with task_payload intact so worker picks it up again
await self._pool.execute(
f"""
UPDATE {table}
SET status = 'pending', worker_id = NULL, claimed_at = NULL, updated_at = now()
WHERE operation_id = $1
""",
operation_id,
)
recovered += 1
logger.info(f"Batch operation {operation_id} reset to pending for re-processing")
return recovered
except Exception as e:
schema_display = f'"{schema}"' if schema else str(schema)
logger.error(f"Failed to recover batch operations for schema {schema_display}: {e}")
return 0
async def run(self):
"""
Main polling loop with fire-and-forget task execution.
Continuously polls for pending tasks, spawns them as background tasks,
and immediately continues polling (up to slot limits).
"""
await self.recover_own_tasks()
logger.info(
f"Worker {self._worker_id} starting polling loop "
f"(max_slots={self._max_slots}, consolidation_max_slots={self._consolidation_max_slots})"
)
while not self._shutdown.is_set():
try:
# Claim a batch of tasks (respecting slot limits)
tasks = await self.claim_batch()
if tasks:
# Log batch info
task_types: dict[str, int] = {}
schemas_seen: set[str | None] = set()
consolidation_count = 0
for task in tasks:
t = task.task_dict.get("type", "unknown")
op_type = task.task_dict.get("operation_type", "unknown")
task_types[t] = task_types.get(t, 0) + 1
schemas_seen.add(task.schema)
if op_type == "consolidation":
consolidation_count += 1
types_str = ", ".join(f"{k}:{v}" for k, v in task_types.items())
# Display None as "default" in logs
schemas_str = ", ".join(s if s else "default" for s in schemas_seen)
logger.info(
f"Worker {self._worker_id} claimed {len(tasks)} tasks "
f"({consolidation_count} consolidation): {types_str} (schemas: {schemas_str})"
)
# Spawn tasks as background jobs (fire-and-forget)
for task in tasks:
await self.execute_task(task)
# Continue immediately to claim more tasks (if slots available)
continue
# No tasks claimed (either no pending tasks or slots full)
# Wait before polling again
try:
await asyncio.wait_for(
self._shutdown.wait(),
timeout=self._poll_interval_ms / 1000,
)
except asyncio.TimeoutError:
pass # Normal timeout, continue polling
# Log progress stats periodically
await self._log_progress_if_due()
except asyncio.CancelledError:
logger.info(f"Worker {self._worker_id} polling loop cancelled")
break
except Exception as e:
logger.error(f"Worker {self._worker_id} error in polling loop: {e}")
traceback.print_exc()
# Backoff on error
await asyncio.sleep(1)
logger.info(f"Worker {self._worker_id} polling loop stopped")
async def shutdown_graceful(self, timeout: float = 30.0):
"""
Signal shutdown and wait for current tasks to complete.
Args:
timeout: Maximum time to wait for in-flight tasks (seconds)
"""
logger.info(f"Worker {self._worker_id} initiating graceful shutdown")
self._shutdown.set()
# Wait for in-flight tasks to complete
start_time = asyncio.get_event_loop().time()
while asyncio.get_event_loop().time() - start_time < timeout:
async with self._in_flight_lock:
in_flight = self._in_flight_count
active_task_objects = [task_info[3] for task_info in self._active_tasks.values()]
if in_flight == 0:
logger.info(f"Worker {self._worker_id} graceful shutdown complete")
return
logger.info(f"Worker {self._worker_id} waiting for {in_flight} in-flight tasks")
# Wait for at least one task to complete
if active_task_objects:
done, _ = await asyncio.wait(active_task_objects, timeout=0.5, return_when=asyncio.FIRST_COMPLETED)
else:
await asyncio.sleep(0.5)
logger.warning(f"Worker {self._worker_id} shutdown timeout after {timeout}s, cancelling remaining tasks")
# Cancel remaining tasks
async with self._in_flight_lock:
for operation_id, (_, _, _, bg_task) in list(self._active_tasks.items()):
if not bg_task.done():
bg_task.cancel()
async def _log_progress_if_due(self):
"""Log progress stats every PROGRESS_LOG_INTERVAL seconds."""
now = time.time()
if now - self._last_progress_log < PROGRESS_LOG_INTERVAL:
return
self._last_progress_log = now
try:
# Get local active tasks
async with self._in_flight_lock:
in_flight = self._in_flight_count
in_flight_by_type = dict(self._in_flight_by_type)
active_tasks = dict(self._active_tasks)
consolidation_count = in_flight_by_type.get("consolidation", 0)
available_slots = self._max_slots - in_flight
available_consolidation_slots = self._consolidation_max_slots - consolidation_count
# Build local processing breakdown
task_groups: dict[tuple[str, str], int] = {}
for op_type, bank_id, _, _ in active_tasks.values():
key = (op_type, bank_id)
task_groups[key] = task_groups.get(key, 0) + 1
processing_info = [f"{op}:{bank}({cnt})" for (op, bank), cnt in task_groups.items()]
processing_str = ", ".join(processing_info[:10]) if processing_info else "none"
if len(processing_info) > 10:
processing_str += f" +{len(processing_info) - 10} more"
# Get global stats from DB
schemas = await self._get_schemas()
global_pending = 0
all_worker_counts: dict[str, int] = {}
async with self._pool.acquire() as conn:
for schema in schemas:
table = fq_table("async_operations", schema)
row = await conn.fetchrow(f"SELECT COUNT(*) as count FROM {table} WHERE status = 'pending'")
global_pending += row["count"] if row else 0
worker_rows = await conn.fetch(
f"""
SELECT worker_id, COUNT(*) as count
FROM {table}
WHERE status = 'processing'
GROUP BY worker_id
"""
)
for wr in worker_rows:
wid = wr["worker_id"] or "unknown"
all_worker_counts[wid] = all_worker_counts.get(wid, 0) + wr["count"]
other_workers = []
for wid, cnt in all_worker_counts.items():
if wid != self._worker_id:
other_workers.append(f"{wid}:{cnt}")
others_str = ", ".join(other_workers) if other_workers else "none"
# Display None as "default" in logs
schemas_str = ", ".join(s if s else "default" for s in schemas)
logger.info(
f"[WORKER_STATS] worker={self._worker_id} "
f"slots={in_flight}/{self._max_slots} (consolidation={consolidation_count}/{self._consolidation_max_slots}) | "
f"available={available_slots} (consolidation={available_consolidation_slots}) | "
f"global: pending={global_pending} (schemas: {schemas_str}) | "
f"others: {others_str} | "
f"my_active: {processing_str}"
)
except Exception as e:
logger.debug(f"Failed to log progress stats: {e}")
@property
def worker_id(self) -> str:
"""Get the worker ID."""
return self._worker_id
@property
def is_shutdown(self) -> bool:
"""Check if shutdown has been signaled."""
return self._shutdown.is_set()