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celery.py
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from __future__ import absolute_import import sys import time from sentry_sdk.api import continue_trace from sentry_sdk.consts import OP from sentry_sdk._compat import reraise from sentry_sdk._functools import wraps from sentry_sdk.crons import capture_checkin, MonitorStatus from sentry_sdk.hub import Hub from sentry_sdk.integrations import Integration, DidNotEnable from sentry_sdk.integrations.logging import ignore_logger from sentry_sdk.tracing import BAGGAGE_HEADER_NAME, TRANSACTION_SOURCE_TASK from sentry_sdk._types import TYPE_CHECKING from sentry_sdk.utils import ( capture_internal_exceptions, event_from_exception, logger, match_regex_list, ) if TYPE_CHECKING: from typing import Any from typing import Callable from typing import Dict from typing import List from typing import Optional from typing import Tuple from typing import TypeVar from typing import Union from sentry_sdk._types import EventProcessor, Event, Hint, ExcInfo F = TypeVar("F", bound=Callable[..., Any]) try: from celery import VERSION as CELERY_VERSION # type: ignore from celery import Task, Celery from celery.app.trace import task_has_custom from celery.beat import Scheduler # type: ignore from celery.exceptions import ( # type: ignore Ignore, Reject, Retry, SoftTimeLimitExceeded, ) from celery.schedules import crontab, schedule # type: ignore from celery.signals import ( # type: ignore task_failure, task_success, task_retry, ) except ImportError: raise DidNotEnable("Celery not installed") CELERY_CONTROL_FLOW_EXCEPTIONS = (Retry, Ignore, Reject) class CeleryIntegration(Integration): identifier = "celery" def __init__( self, propagate_traces=True, monitor_beat_tasks=False, exclude_beat_tasks=None, ): # type: (bool, bool, Optional[List[str]]) -> None self.propagate_traces = propagate_traces self.monitor_beat_tasks = monitor_beat_tasks self.exclude_beat_tasks = exclude_beat_tasks if monitor_beat_tasks: _patch_beat_apply_entry() _setup_celery_beat_signals() @staticmethod def setup_once(): # type: () -> None if CELERY_VERSION < (3,): raise DidNotEnable("Celery 3 or newer required.") import celery.app.trace as trace # type: ignore old_build_tracer = trace.build_tracer def sentry_build_tracer(name, task, *args, **kwargs): # type: (Any, Any, *Any, **Any) -> Any if not getattr(task, "_sentry_is_patched", False): # determine whether Celery will use __call__ or run and patch # accordingly if task_has_custom(task, "__call__"): type(task).__call__ = _wrap_task_call(task, type(task).__call__) else: task.run = _wrap_task_call(task, task.run) # `build_tracer` is apparently called for every task # invocation. Can't wrap every celery task for every invocation # or we will get infinitely nested wrapper functions. task._sentry_is_patched = True return _wrap_tracer(task, old_build_tracer(name, task, *args, **kwargs)) trace.build_tracer = sentry_build_tracer from celery.app.task import Task # type: ignore Task.apply_async = _wrap_apply_async(Task.apply_async) _patch_worker_exit() # This logger logs every status of every task that ran on the worker. # Meaning that every task's breadcrumbs are full of stuff like "Task # <foo> raised unexpected <bar>". ignore_logger("celery.worker.job") ignore_logger("celery.app.trace") # This is stdout/err redirected to a logger, can't deal with this # (need event_level=logging.WARN to reproduce) ignore_logger("celery.redirected") def _now_seconds_since_epoch(): # type: () -> float # We cannot use `time.perf_counter()` when dealing with the duration # of a Celery task, because the start of a Celery task and # the end are recorded in different processes. # Start happens in the Celery Beat process, # the end in a Celery Worker process. return time.time() def _wrap_apply_async(f): # type: (F) -> F @wraps(f) def apply_async(*args, **kwargs): # type: (*Any, **Any) -> Any hub = Hub.current integration = hub.get_integration(CeleryIntegration) if integration is not None and integration.propagate_traces: with hub.start_span( op=OP.QUEUE_SUBMIT_CELERY, description=args[0].name ) as span: with capture_internal_exceptions(): headers = dict(hub.iter_trace_propagation_headers(span)) if integration.monitor_beat_tasks: headers.update( { "sentry-monitor-start-timestamp-s": "%.9f" % _now_seconds_since_epoch(), } ) if headers: # Note: kwargs can contain headers=None, so no setdefault! # Unsure which backend though. kwarg_headers = kwargs.get("headers") or {} existing_baggage = kwarg_headers.get(BAGGAGE_HEADER_NAME) sentry_baggage = headers.get(BAGGAGE_HEADER_NAME) combined_baggage = sentry_baggage or existing_baggage if sentry_baggage and existing_baggage: combined_baggage = "{},{}".format( existing_baggage, sentry_baggage, ) kwarg_headers.update(headers) if combined_baggage: kwarg_headers[BAGGAGE_HEADER_NAME] = combined_baggage # https://github.com/celery/celery/issues/4875 # # Need to setdefault the inner headers too since other # tracing tools (dd-trace-py) also employ this exact # workaround and we don't want to break them. kwarg_headers.setdefault("headers", {}).update(headers) if combined_baggage: kwarg_headers["headers"][ BAGGAGE_HEADER_NAME ] = combined_baggage # Add the Sentry options potentially added in `sentry_apply_entry` # to the headers (done when auto-instrumenting Celery Beat tasks) for key, value in kwarg_headers.items(): if key.startswith("sentry-"): kwarg_headers["headers"][key] = value kwargs["headers"] = kwarg_headers return f(*args, **kwargs) else: return f(*args, **kwargs) return apply_async # type: ignore def _wrap_tracer(task, f): # type: (Any, F) -> F # Need to wrap tracer for pushing the scope before prerun is sent, and # popping it after postrun is sent. # # This is the reason we don't use signals for hooking in the first place. # Also because in Celery 3, signal dispatch returns early if one handler # crashes. @wraps(f) def _inner(*args, **kwargs): # type: (*Any, **Any) -> Any hub = Hub.current if hub.get_integration(CeleryIntegration) is None: return f(*args, **kwargs) with hub.push_scope() as scope: scope._name = "celery" scope.clear_breadcrumbs() scope.add_event_processor(_make_event_processor(task, *args, **kwargs)) transaction = None # Celery task objects are not a thing to be trusted. Even # something such as attribute access can fail. with capture_internal_exceptions(): transaction = continue_trace( args[3].get("headers") or {}, op=OP.QUEUE_TASK_CELERY, name="unknown celery task", source=TRANSACTION_SOURCE_TASK, ) transaction.name = task.name transaction.set_status("ok") if transaction is None: return f(*args, **kwargs) with hub.start_transaction( transaction, custom_sampling_context={ "celery_job": { "task": task.name, # for some reason, args[1] is a list if non-empty but a # tuple if empty "args": list(args[1]), "kwargs": args[2], } }, ): return f(*args, **kwargs) return _inner # type: ignore def _wrap_task_call(task, f): # type: (Any, F) -> F # Need to wrap task call because the exception is caught before we get to # see it. Also celery's reported stacktrace is untrustworthy. # functools.wraps is important here because celery-once looks at this # method's name. # https://github.com/getsentry/sentry-python/issues/421 @wraps(f) def _inner(*args, **kwargs): # type: (*Any, **Any) -> Any try: return f(*args, **kwargs) except Exception: exc_info = sys.exc_info() with capture_internal_exceptions(): _capture_exception(task, exc_info) reraise(*exc_info) return _inner # type: ignore def _make_event_processor(task, uuid, args, kwargs, request=None): # type: (Any, Any, Any, Any, Optional[Any]) -> EventProcessor def event_processor(event, hint): # type: (Event, Hint) -> Optional[Event] with capture_internal_exceptions(): tags = event.setdefault("tags", {}) tags["celery_task_id"] = uuid extra = event.setdefault("extra", {}) extra["celery-job"] = { "task_name": task.name, "args": args, "kwargs": kwargs, } if "exc_info" in hint: with capture_internal_exceptions(): if issubclass(hint["exc_info"][0], SoftTimeLimitExceeded): event["fingerprint"] = [ "celery", "SoftTimeLimitExceeded", getattr(task, "name", task), ] return event return event_processor def _capture_exception(task, exc_info): # type: (Any, ExcInfo) -> None hub = Hub.current if hub.get_integration(CeleryIntegration) is None: return if isinstance(exc_info[1], CELERY_CONTROL_FLOW_EXCEPTIONS): # ??? Doesn't map to anything _set_status(hub, "aborted") return _set_status(hub, "internal_error") if hasattr(task, "throws") and isinstance(exc_info[1], task.throws): return # If an integration is there, a client has to be there. client = hub.client # type: Any event, hint = event_from_exception( exc_info, client_options=client.options, mechanism={"type": "celery", "handled": False}, ) hub.capture_event(event, hint=hint) def _set_status(hub, status): # type: (Hub, str) -> None with capture_internal_exceptions(): with hub.configure_scope() as scope: if scope.span is not None: scope.span.set_status(status) def _patch_worker_exit(): # type: () -> None # Need to flush queue before worker shutdown because a crashing worker will # call os._exit from billiard.pool import Worker # type: ignore old_workloop = Worker.workloop def sentry_workloop(*args, **kwargs): # type: (*Any, **Any) -> Any try: return old_workloop(*args, **kwargs) finally: with capture_internal_exceptions(): hub = Hub.current if hub.get_integration(CeleryIntegration) is not None: hub.flush() Worker.workloop = sentry_workloop def _get_headers(task): # type: (Task) -> Dict[str, Any] headers = task.request.get("headers") or {} # flatten nested headers if "headers" in headers: headers.update(headers["headers"]) del headers["headers"] headers.update(task.request.get("properties") or {}) return headers def _get_humanized_interval(seconds): # type: (float) -> Tuple[int, str] TIME_UNITS = ( # noqa: N806 ("day", 60 * 60 * 24.0), ("hour", 60 * 60.0), ("minute", 60.0), ) seconds = float(seconds) for unit, divider in TIME_UNITS: if seconds >= divider: interval = int(seconds / divider) return (interval, unit) return (int(seconds), "second") def _get_monitor_config(celery_schedule, app, monitor_name): # type: (Any, Celery, str) -> Dict[str, Any] monitor_config = {} # type: Dict[str, Any] schedule_type = None # type: Optional[str] schedule_value = None # type: Optional[Union[str, int]] schedule_unit = None # type: Optional[str] if isinstance(celery_schedule, crontab): schedule_type = "crontab" schedule_value = ( "{0._orig_minute} " "{0._orig_hour} " "{0._orig_day_of_month} " "{0._orig_month_of_year} " "{0._orig_day_of_week}".format(celery_schedule) ) elif isinstance(celery_schedule, schedule): schedule_type = "interval" (schedule_value, schedule_unit) = _get_humanized_interval( celery_schedule.seconds ) if schedule_unit == "second": logger.warning( "Intervals shorter than one minute are not supported by Sentry Crons. Monitor '%s' has an interval of %s seconds. Use the `exclude_beat_tasks` option in the celery integration to exclude it.", monitor_name, schedule_value, ) return {} else: logger.warning( "Celery schedule type '%s' not supported by Sentry Crons.", type(celery_schedule), ) return {} monitor_config["schedule"] = {} monitor_config["schedule"]["type"] = schedule_type monitor_config["schedule"]["value"] = schedule_value if schedule_unit is not None: monitor_config["schedule"]["unit"] = schedule_unit monitor_config["timezone"] = app.conf.timezone or "UTC" return monitor_config def _patch_beat_apply_entry(): # type: () -> None original_apply_entry = Scheduler.apply_entry def sentry_apply_entry(*args, **kwargs): # type: (*Any, **Any) -> None scheduler, schedule_entry = args app = scheduler.app celery_schedule = schedule_entry.schedule monitor_name = schedule_entry.name hub = Hub.current integration = hub.get_integration(CeleryIntegration) if integration is None: return original_apply_entry(*args, **kwargs) if match_regex_list(monitor_name, integration.exclude_beat_tasks): return original_apply_entry(*args, **kwargs) with hub.configure_scope() as scope: # When tasks are started from Celery Beat, make sure each task has its own trace. scope.set_new_propagation_context() monitor_config = _get_monitor_config(celery_schedule, app, monitor_name) is_supported_schedule = bool(monitor_config) if is_supported_schedule: headers = schedule_entry.options.pop("headers", {}) headers.update( { "sentry-monitor-slug": monitor_name, "sentry-monitor-config": monitor_config, } ) check_in_id = capture_checkin( monitor_slug=monitor_name, monitor_config=monitor_config, status=MonitorStatus.IN_PROGRESS, ) headers.update({"sentry-monitor-check-in-id": check_in_id}) # Set the Sentry configuration in the options of the ScheduleEntry. # Those will be picked up in `apply_async` and added to the headers. schedule_entry.options["headers"] = headers return original_apply_entry(*args, **kwargs) Scheduler.apply_entry = sentry_apply_entry def _setup_celery_beat_signals(): # type: () -> None task_success.connect(crons_task_success) task_failure.connect(crons_task_failure) task_retry.connect(crons_task_retry) def crons_task_success(sender, **kwargs): # type: (Task, Dict[Any, Any]) -> None logger.debug("celery_task_success %s", sender) headers = _get_headers(sender) if "sentry-monitor-slug" not in headers: return monitor_config = headers.get("sentry-monitor-config", {}) start_timestamp_s = float(headers["sentry-monitor-start-timestamp-s"]) capture_checkin( monitor_slug=headers["sentry-monitor-slug"], monitor_config=monitor_config, check_in_id=headers["sentry-monitor-check-in-id"], duration=_now_seconds_since_epoch() - start_timestamp_s, status=MonitorStatus.OK, ) def crons_task_failure(sender, **kwargs): # type: (Task, Dict[Any, Any]) -> None logger.debug("celery_task_failure %s", sender) headers = _get_headers(sender) if "sentry-monitor-slug" not in headers: return monitor_config = headers.get("sentry-monitor-config", {}) start_timestamp_s = float(headers["sentry-monitor-start-timestamp-s"]) capture_checkin( monitor_slug=headers["sentry-monitor-slug"], monitor_config=monitor_config, check_in_id=headers["sentry-monitor-check-in-id"], duration=_now_seconds_since_epoch() - start_timestamp_s, status=MonitorStatus.ERROR, ) def crons_task_retry(sender, **kwargs): # type: (Task, Dict[Any, Any]) -> None logger.debug("celery_task_retry %s", sender) headers = _get_headers(sender) if "sentry-monitor-slug" not in headers: return monitor_config = headers.get("sentry-monitor-config", {}) start_timestamp_s = float(headers["sentry-monitor-start-timestamp-s"]) capture_checkin( monitor_slug=headers["sentry-monitor-slug"], monitor_config=monitor_config, check_in_id=headers["sentry-monitor-check-in-id"], duration=_now_seconds_since_epoch() - start_timestamp_s, status=MonitorStatus.ERROR, )