107 lines
4 KiB
Python
107 lines
4 KiB
Python
"""Event notification tasks"""
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from guardian.shortcuts import get_anonymous_user
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from structlog.stdlib import get_logger
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from authentik.core.models import User
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from authentik.events.models import (
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Event,
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Notification,
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NotificationRule,
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NotificationTransport,
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NotificationTransportError,
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)
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from authentik.events.monitored_tasks import MonitoredTask, TaskResult, TaskResultStatus
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from authentik.policies.engine import PolicyEngine
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from authentik.policies.models import PolicyBinding, PolicyEngineMode
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from authentik.root.celery import CELERY_APP
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LOGGER = get_logger()
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@CELERY_APP.task()
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def event_notification_handler(event_uuid: str):
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"""Start task for each trigger definition"""
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for trigger in NotificationRule.objects.all():
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event_trigger_handler.apply_async(args=[event_uuid, trigger.name], queue="authentik_events")
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@CELERY_APP.task()
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def event_trigger_handler(event_uuid: str, trigger_name: str):
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"""Check if policies attached to NotificationRule match event"""
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events = Event.objects.filter(event_uuid=event_uuid)
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if not events.exists():
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LOGGER.warning("event doesn't exist yet or anymore", event_uuid=event_uuid)
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return
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event: Event = events.first()
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triggers: NotificationRule = NotificationRule.objects.filter(name=trigger_name)
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if not triggers.exists():
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return
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trigger = triggers.first()
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if "policy_uuid" in event.context:
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policy_uuid = event.context["policy_uuid"]
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if PolicyBinding.objects.filter(
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target__in=NotificationRule.objects.all().values_list("pbm_uuid", flat=True),
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policy=policy_uuid,
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).exists():
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# If policy that caused this event to be created is attached
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# to *any* NotificationRule, we return early.
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# This is the most effective way to prevent infinite loops.
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LOGGER.debug("e(trigger): attempting to prevent infinite loop", trigger=trigger)
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return
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if not trigger.group:
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LOGGER.debug("e(trigger): trigger has no group", trigger=trigger)
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return
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LOGGER.debug("e(trigger): checking if trigger applies", trigger=trigger)
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try:
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user = User.objects.filter(pk=event.user.get("pk")).first() or get_anonymous_user()
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except User.DoesNotExist:
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LOGGER.warning("e(trigger): failed to get user", trigger=trigger)
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return
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policy_engine = PolicyEngine(trigger, user)
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policy_engine.mode = PolicyEngineMode.MODE_ANY
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policy_engine.empty_result = False
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policy_engine.use_cache = False
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policy_engine.request.context["event"] = event
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policy_engine.build()
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result = policy_engine.result
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if not result.passing:
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return
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LOGGER.debug("e(trigger): event trigger matched", trigger=trigger)
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# Create the notification objects
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for transport in trigger.transports.all():
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for user in trigger.group.users.all():
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LOGGER.debug("created notification")
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notification = Notification.objects.create(
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severity=trigger.severity, body=event.summary, event=event, user=user
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)
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notification_transport.apply_async(
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args=[notification.pk, transport.pk], queue="authentik_events"
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)
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if transport.send_once:
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break
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@CELERY_APP.task(
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bind=True,
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autoretry_for=(NotificationTransportError,),
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retry_backoff=True,
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base=MonitoredTask,
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)
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def notification_transport(self: MonitoredTask, notification_pk: int, transport_pk: int):
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"""Send notification over specified transport"""
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self.save_on_success = False
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try:
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notification: Notification = Notification.objects.filter(pk=notification_pk).first()
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if not notification:
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return
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transport: NotificationTransport = NotificationTransport.objects.get(pk=transport_pk)
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transport.send(notification)
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self.set_status(TaskResult(TaskResultStatus.SUCCESSFUL))
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except NotificationTransportError as exc:
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self.set_status(TaskResult(TaskResultStatus.ERROR).with_error(exc))
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raise exc
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