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# -*- coding: utf-8 -*-
#
from django.db.models.signals import post_save, post_init
from django.dispatch import receiver
from django.utils.translation import gettext as _
from common.utils import get_logger
from .models import Asset, SystemUser, Cluster
from .tasks import update_assets_hardware_info_util, \
test_asset_connectability_util, \
push_system_user_util
logger = get_logger(__file__)
def update_asset_hardware_info_on_created(asset):
logger.debug("Update asset `{}` hardware info".format(asset))
update_assets_hardware_info_util.delay([asset])
def test_asset_conn_on_created(asset):
logger.debug("Test asset `{}` connectability".format(asset))
test_asset_connectability_util.delay(asset)
def push_cluster_system_users_to_asset(asset):
if asset.cluster:
logger.info("Push cluster system user to asset: {}".format(asset))
task_name = _("Push cluster system users to asset")
system_users = asset.cluster.systemuser_set.all()
push_system_user_util.delay(system_users, [asset], task_name)
@receiver(post_save, sender=Asset, dispatch_uid="my_unique_identifier")
def on_asset_created(sender, instance=None, created=False, **kwargs):
if instance and created:
logger.info("Asset `{}` create signal received".format(instance))
update_asset_hardware_info_on_created(instance)
test_asset_conn_on_created(instance)
push_cluster_system_users_to_asset(instance)
@receiver(post_init, sender=Asset)
def on_asset_init(sender, instance, created=False, **kwargs):
if instance and created is False:
instance.__original_cluster = instance.cluster
@receiver(post_save, sender=Asset)
def on_asset_cluster_changed(sender, instance=None, created=False, **kwargs):
if instance and created is False and instance.cluster != instance.__original_cluster:
logger.info("Asset cluster changed signal received")
push_cluster_system_users_to_asset(instance)
def push_to_cluster_assets_on_system_user_created_or_update(system_user):
if not system_user.auto_push:
return
logger.debug("Push system user `{}` to cluster assets".format(system_user.name))
for cluster in system_user.cluster.all():
task_name = _("Push system user to cluster assets: {}->{}").format(
cluster.name, system_user.name
)
assets = cluster.assets.all()
push_system_user_util.delay([system_user], assets, task_name)
@receiver(post_save, sender=SystemUser)
def on_system_user_created_or_updated(sender, instance=None, **kwargs):
if instance and instance.auto_push:
logger.info("System user `{}` create or update signal received".format(instance))
push_to_cluster_assets_on_system_user_created_or_update(instance)
@receiver(post_init, sender=Cluster, dispatch_uid="my_unique_identifier")
def on_cluster_init(sender, instance, **kwargs):
instance.__original_assets = tuple(instance.assets.values_list('pk', flat=True))
instance.__origin_system_users = tuple(instance.systemuser_set.values_list('pk', flat=True))
@receiver(post_save, sender=Cluster, dispatch_uid="my_unique_identifier")
def on_cluster_assets_changed(sender, instance, **kwargs):
assets_origin = instance.__original_assets
assets_new = instance.assets.values_list('pk', flat=True)
assets_added = set(assets_new) - set(assets_origin)
if assets_added:
logger.debug("Receive cluster change assets signal")
logger.debug("Push cluster `{}` system users to: {}".format(
instance, ', '.join([str(asset) for asset in assets_added])
))
assets = []
for asset_id in assets_added:
try:
asset = Asset.objects.get(pk=asset_id)
except Asset.DoesNotExist:
continue
else:
assets.append(asset)
system_users = [s for s in instance.systemuser_set.all() if s.auto_push]
task_name = _("Push system user to assets")
push_system_user_util.delay(system_users, assets, task_name)
@receiver(post_save, sender=Cluster, dispatch_uid="my_unique_identifier2")
def on_cluster_system_user_changed(sender, instance, **kwargs):
system_users_origin = instance.__origin_system_users
system_user_new = instance.systemuser_set.values_list('pk', flat=True)
system_users_added = set(system_user_new) - set(system_users_origin)
if system_users_added:
logger.debug("Receive cluster change system users signal")
system_users = []
for system_user_id in system_users_added:
try:
system_user = SystemUser.objects.get(pk=system_user_id)
except SystemUser.DoesNotExist:
continue
else:
system_users.append(system_user)
logger.debug("Push new system users `{}` to cluster `{}` assets".format(
','.join([s.name for s in system_users]), instance
))
task_name = _(
"Push system user to cluster assets: {}->{}").format(
instance.name, ', '.join(s.name for s in system_users)
)
push_system_user_util.delay(system_users, instance.assets.all(), task_name)