django-orchestra/orchestra/apps/resources/tasks.py
2014-11-17 14:17:33 +00:00

47 lines
1.7 KiB
Python

from celery import shared_task
from orchestra.apps.orchestration.models import BackendOperation as Operation
from orchestra.models.utils import get_model_field_path
from .backends import ServiceMonitor
@shared_task(name='resources.Monitor')
def monitor(resource_id, ids=None):
from .models import ResourceData, Resource
resource = Resource.objects.get(pk=resource_id)
resource_model = resource.content_type.model_class()
# Execute monitors
for monitor_name in resource.monitors:
backend = ServiceMonitor.get_backend(monitor_name)
model = backend.model_class()
kwargs = {}
if ids:
path = get_model_field_path(model, resource_model)
path = '%s__in' % ('__'.join(path) or 'id')
kwargs = {
path: ids
}
operations = []
# Execute monitor
for obj in model.objects.filter(**kwargs):
operations.append(Operation.create(backend, obj, Operation.MONITOR))
Operation.execute(operations)
kwargs = {'id__in': ids} if ids else {}
# Update used resources and trigger resource exceeded and revovery
operations = []
model = resource.content_type.model_class()
for obj in model.objects.filter(**kwargs):
data = ResourceData.get_or_create(obj, resource)
data.update()
if not resource.disable_trigger:
if data.used > data.allocated:
op = Operation.create(backend, obj, Operation.EXCEED)
operations.append(op)
elif data.used < data.allocated:
op = Operation.create(backend, obj, Operation.RECOVERY)
operations.append(op)
Operation.execute(operations)