django-orchestra/orchestra/apps/resources/tasks.py

42 lines
1.5 KiB
Python

from celery import shared_task
from django.db.models.loading import get_model
from django.utils import timezone
from orchestra.apps.orchestration.models import BackendOperation as Operation
from .backends import ServiceMonitor
from .models import ResourceData, Resource
@shared_task(name='resources.Monitor')
def monitor(resource_id):
resource = Resource.objects.get(pk=resource_id)
# Execute monitors
for monitor_name in resource.monitors:
backend = ServiceMonitor.get_backend(monitor_name)
model = get_model(*backend.model.split('.'))
operations = []
# Execute monitor
for obj in model.objects.all():
operations.append(Operation.create(backend, obj, Operation.MONITOR))
Operation.execute(operations)
# Update used resources and trigger resource exceeded and revovery
operations = []
model = resource.content_type.model_class()
for obj in model.objects.all():
data = ResourceData.get_or_create(obj, resource)
current = data.get_used()
if not resource.disable_trigger:
if data.used < data.allocated and current > data.allocated:
op = Operation.create(backend, obj, Operation.EXCEED)
operations.append(op)
elif data.used > data.allocated and current < data.allocated:
op = Operation.create(backend, obj, Operation.RECOVERY)
operation.append(op)
data.used = current or 0
data.last_update = timezone.now()
data.save()
Operation.execute(operations)