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113 lines
3.8 KiB
113 lines
3.8 KiB
# -*- coding: utf-8 -*-
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#
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from django.db.models.signals import (
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m2m_changed, pre_delete, post_delete, pre_save, post_save
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)
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from django.dispatch import receiver
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from django.utils.translation import gettext_noop
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from assets.models import Asset, Node, Host, Database, Device, Web, Cloud
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from assets.tasks import test_assets_connectivity_task, gather_assets_facts_task
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from common.const.signals import POST_REMOVE, PRE_REMOVE
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from common.decorators import on_transaction_commit, merge_delay_run, key_by_org
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from common.utils import get_logger
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from orgs.utils import current_org
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logger = get_logger(__file__)
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@receiver(pre_save, sender=Node)
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def on_node_pre_save(sender, instance: Node, **kwargs):
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instance.parent_key = instance.compute_parent_key()
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@merge_delay_run(ttl=5, key=key_by_org)
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def test_assets_connectivity_handler(assets=()):
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task_name = gettext_noop("Test assets connectivity ")
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asset_ids = [a.id for a in assets]
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test_assets_connectivity_task.delay(asset_ids, str(current_org.id), task_name)
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@merge_delay_run(ttl=5, key=key_by_org)
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def gather_assets_facts_handler(assets=()):
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if not assets:
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logger.info("No assets to update hardware info")
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return
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name = gettext_noop("Gather asset hardware info")
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asset_ids = [a.id for a in assets]
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gather_assets_facts_task.delay(asset_ids, str(current_org.id), task_name=name)
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@merge_delay_run(ttl=5, key=key_by_org)
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def ensure_asset_has_node(assets=()):
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asset_ids = [asset.id for asset in assets]
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has_ids = Asset.nodes.through.objects \
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.filter(asset_id__in=asset_ids) \
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.values_list('asset_id', flat=True)
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need_ids = set(asset_ids) - set(has_ids)
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if not need_ids:
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return
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org_root = Node.org_root()
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org_root.assets.add(*need_ids)
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@receiver(post_save, sender=Asset)
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@on_transaction_commit
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def on_asset_create(sender, instance=None, created=False, **kwargs):
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"""
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当资产创建时，更新硬件信息，更新可连接性
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确保资产必须属于一个节点
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"""
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if not created:
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return
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logger.info("Asset create signal recv: {}".format(instance))
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ensure_asset_has_node(assets=(instance,))
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# 获取资产硬件信息
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auto_info = instance.auto_info
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if auto_info.get('ping_enabled'):
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logger.debug('Asset {} ping enabled, test connectivity'.format(instance.name))
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test_assets_connectivity_handler(assets=(instance,))
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if auto_info.get('gather_facts_enabled'):
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logger.debug('Asset {} gather facts enabled, gather facts'.format(instance.name))
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gather_assets_facts_handler(assets=(instance,))
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RELATED_NODE_IDS = '_related_node_ids'
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@receiver(pre_delete, sender=Asset)
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def on_asset_delete(instance: Asset, using, **kwargs):
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logger.debug("Asset pre delete signal recv: {}".format(instance))
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node_ids = Node.objects.filter(assets=instance) \
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.distinct().values_list('id', flat=True)
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setattr(instance, RELATED_NODE_IDS, node_ids)
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m2m_changed.send(
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sender=Asset.nodes.through, instance=instance,
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reverse=False, model=Node, pk_set=node_ids,
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using=using, action=PRE_REMOVE
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)
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@receiver(post_delete, sender=Asset)
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def on_asset_post_delete(instance: Asset, using, **kwargs):
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logger.debug("Asset post delete signal recv: {}".format(instance))
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node_ids = getattr(instance, RELATED_NODE_IDS, [])
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if node_ids:
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m2m_changed.send(
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sender=Asset.nodes.through, instance=instance, reverse=False,
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model=Node, pk_set=node_ids, using=using, action=POST_REMOVE
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)
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@on_transaction_commit
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def resend_to_asset_signals(sender, signal, instance, **kwargs):
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signal.send(sender=Asset, instance=instance.asset_ptr, **kwargs)
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for model in (Host, Database, Device, Web, Cloud):
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for s in (pre_save, post_save):
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s.connect(resend_to_asset_signals, sender=model)
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