78 lines
3 KiB
Python
78 lines
3 KiB
Python
import datetime
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from celery.task.schedules import crontab
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from django.db import transaction
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from django.utils import timezone
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from orchestra.contrib.orchestration import Operation
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from orchestra.contrib.tasks import task, periodic_task
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from orchestra.models.utils import get_model_field_path
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from orchestra.utils.sys import LockFile
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from . import settings
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from .backends import ServiceMonitor
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@task(name='resources.Monitor')
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def monitor(resource_id, ids=None):
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with LockFile('/dev/shm/resources.monitor-%i.lock' % resource_id, expire=60*60, unlocked=bool(ids)):
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from .models import ResourceData, Resource
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resource = Resource.objects.get(pk=resource_id)
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resource_model = resource.content_type.model_class()
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logs = []
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# Execute monitors
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for monitor_name in resource.monitors:
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backend = ServiceMonitor.get_backend(monitor_name)
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model = backend.model_class()
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kwargs = {}
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if ids:
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path = get_model_field_path(model, resource_model)
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path = '%s__in' % ('__'.join(path) or 'id')
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kwargs = {
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path: ids
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}
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# Execute monitor
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monitorings = []
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for obj in model.objects.filter(**kwargs):
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op = Operation(backend, obj, Operation.MONITOR)
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monitorings.append(op)
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logs += Operation.execute(monitorings, async=False)
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kwargs = {'id__in': ids} if ids else {}
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# Update used resources and trigger resource exceeded and revovery
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triggers = []
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model = resource.content_type.model_class()
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for obj in model.objects.filter(**kwargs):
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data, __ = ResourceData.get_or_create(obj, resource)
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data.update()
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if not resource.disable_trigger:
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a = data.used
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b = data.allocated
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if data.used > (data.allocated or 0):
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op = Operation(backend, obj, Operation.EXCEEDED)
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triggers.append(op)
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elif data.used < (data.allocated or 0):
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op = Operation(backend, obj, Operation.RECOVERY)
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triggers.append(op)
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Operation.execute(triggers)
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return logs
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@periodic_task(run_every=crontab(hour=2, minute=30), name='resources.cleanup_old_monitors')
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@transaction.atomic
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def cleanup_old_monitors(queryset=None):
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if queryset is None:
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from .models import MonitorData
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queryset = MonitorData.objects.all()
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delta = datetime.timedelta(days=settings.RESOURCES_OLD_MONITOR_DATA_DAYS)
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threshold = timezone.now() - delta
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queryset = queryset.filter(created_at__lt=threshold)
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delete_counts = []
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for monitor in ServiceMonitor.get_plugins():
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dataset = queryset.filter(monitor=monitor)
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delete_count = monitor.aggregate(dataset)
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delete_counts.append(
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(monitor.get_name(), delete_count)
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)
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return delete_counts
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