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47 lines
1.4 KiB
47 lines
1.4 KiB
from django.db.models.signals import post_save
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from django.dispatch import receiver
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from django.utils.functional import LazyObject
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from common.decorators import on_transaction_commit
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from common.utils import get_logger
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from common.utils.connection import RedisPubSub
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from ..const import TaskNameType
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from ..models import Task, Session
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from ..utils import DBPortManager
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db_port_manager: DBPortManager
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logger = get_logger(__file__)
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class ComponentEventChan(LazyObject):
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def _setup(self):
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self._wrapped = RedisPubSub('fm.component_event_chan')
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component_event_chan = ComponentEventChan()
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@receiver(post_save, sender=Task)
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@on_transaction_commit
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def on_task_created(sender, instance: Task, created, **kwargs):
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if not created and instance.is_finished:
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# 当组件完成 task 时，修改 session 的 lock 状态
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session_id = instance.args
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name = instance.name
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if name == TaskNameType.lock_session:
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Session.lock_session(session_id)
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elif name == TaskNameType.unlock_session:
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Session.unlock_session(session_id)
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logger.debug(f"signal task post save: {instance.name}, "
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f"session: {session_id}, "
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f"is_finished: {instance.is_finished}")
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return
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event = {
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"type": instance.name,
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"payload": {
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"id": str(instance.id),
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},
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}
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component_event_chan.publish(event)
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