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webvirtcloud/instances/api/viewsets.py
catborise 3fed1d04b4 fix(api): a VM action answers with what the page would have shown after it
The API's VM actions call the web views and only looked at the status
code; the views report a partial result (a disk that was not deleted or
was kept, a template that was not started) as a message for the page
they redirect to. The API reported plain success and left the messages in
the session. Its answer now carries them in "messages".
2026-11-05 16:28:29 +03:00

261 lines
10 KiB
Python

from admin.permissions import IsSuperUser
from computes import utils
from computes.models import Compute
from django.contrib.messages import get_messages
from django.http import Http404
from django.shortcuts import get_object_or_404
from django.urls import reverse
from instances.jobs import MIGRATE_OPTIONS
from instances.models import Flavor, Instance
from instances.views import destroy as instance_destroy
from instances.views import (
force_off,
get_instance,
powercycle,
poweroff,
poweron,
resume,
suspend,
)
from drf_spectacular.utils import extend_schema
from logs.audit import audit, changed_fields, snapshot
from operations import jobs
from operations.api.serializers import OperationSerializer
from rest_framework import permissions, status, viewsets
from rest_framework.decorators import action
from rest_framework.response import Response
from webvirtcloud.serializers import ActionStatusSerializer
from .serializers import (
CreateInstanceSerializer,
DestroyOptionsSerializer,
FlavorSerializer,
InstanceDetailsSerializer,
InstanceSerializer,
MigrateSerializer,
)
def instance_action_response(action, request, pk, message):
response = action(request, pk)
if response.status_code >= 400:
return response
# the page's view reports a partial result (a disk that was kept) as a
# message for the page it redirects to: the API answers with them
return Response({"status": message, "messages": [str(m) for m in get_messages(request)]})
class InstancesViewSet(viewsets.ViewSet):
"""
A simple ViewSet for listing or retrieving ALL/Compute Instances.
"""
permission_classes = [permissions.IsAuthenticated]
serializer_class = InstanceSerializer
lookup_value_converter = "int"
def list(self, request):
if request.user.is_superuser or request.user.has_perm(
"instances.view_instances"
):
queryset = Instance.objects.all().prefetch_related("userinstance_set")
else:
queryset = Instance.objects.filter(
userinstance__user=request.user
).prefetch_related("userinstance_set")
serializer = InstanceSerializer(
queryset, many=True, context={"request": request}
)
return Response(serializer.data)
def retrieve(self, request, pk=None, compute_pk=None):
queryset = get_instance(request.user, pk)
serializer = InstanceSerializer(queryset, context={"request": request})
return Response(serializer.data)
class InstanceViewSet(viewsets.ViewSet):
"""
A simple ViewSet for listing or retrieving Compute Instances.
"""
permission_classes = [permissions.IsAuthenticated]
serializer_class = InstanceSerializer
lookup_value_converter = "int"
def list(self, request, compute_pk=None):
compute = get_object_or_404(Compute, pk=compute_pk)
is_admin = request.user.is_superuser or request.user.has_perm(
"instances.view_instances"
)
if not is_admin:
if not Instance.objects.filter(
compute=compute, userinstance__user=request.user
).exists():
return Response([])
utils.refresh_instance_database(compute)
if is_admin:
queryset = Instance.objects.filter(compute=compute).prefetch_related(
"userinstance_set"
)
else:
queryset = Instance.objects.filter(
compute=compute, userinstance__user=request.user
).prefetch_related("userinstance_set")
serializer = InstanceSerializer(
queryset, many=True, context={"request": request}
)
return Response(serializer.data)
@extend_schema(responses=InstanceDetailsSerializer)
def retrieve(self, request, pk=None, compute_pk=None):
queryset = get_instance(request.user, pk)
if compute_pk is not None and str(queryset.compute_id) != str(compute_pk):
raise Http404()
serializer = InstanceDetailsSerializer(queryset, context={"request": request})
return Response(serializer.data)
@extend_schema(request=DestroyOptionsSerializer, responses=ActionStatusSerializer)
def destroy(self, request, pk=None, compute_pk=None):
queryset = get_instance(request.user, pk, perm_type="delete")
if compute_pk is not None and str(queryset.compute_id) != str(compute_pk):
raise Http404()
return instance_action_response(instance_destroy, request, pk, "Instance is destroyed")
@extend_schema(request=None, responses=ActionStatusSerializer)
@action(detail=True, methods=["post"])
def poweron(self, request, pk=None, compute_pk=None):
queryset = get_instance(request.user, pk, perm_type="power")
if compute_pk is not None and str(queryset.compute_id) != str(compute_pk):
raise Http404()
if queryset.is_template:
return Response({"status": "Templates cannot be started"}, status=status.HTTP_409_CONFLICT)
return instance_action_response(poweron, request, pk, "poweron command send")
@extend_schema(request=None, responses=ActionStatusSerializer)
@action(detail=True, methods=["post"])
def poweroff(self, request, pk=None, compute_pk=None):
queryset = get_instance(request.user, pk, perm_type="power")
if compute_pk is not None and str(queryset.compute_id) != str(compute_pk):
raise Http404()
return instance_action_response(poweroff, request, pk, "poweroff command send")
@extend_schema(request=None, responses=ActionStatusSerializer)
@action(detail=True, methods=["post"])
def powercycle(self, request, pk=None, compute_pk=None):
queryset = get_instance(request.user, pk, perm_type="power")
if compute_pk is not None and str(queryset.compute_id) != str(compute_pk):
raise Http404()
if queryset.is_template:
return Response({"status": "Templates cannot be started"}, status=status.HTTP_409_CONFLICT)
return instance_action_response(powercycle, request, pk, "powercycle command send")
@extend_schema(request=None, responses=ActionStatusSerializer)
@action(detail=True, methods=["post"])
def forceoff(self, request, pk=None, compute_pk=None):
queryset = get_instance(request.user, pk, perm_type="power")
if compute_pk is not None and str(queryset.compute_id) != str(compute_pk):
raise Http404()
return instance_action_response(force_off, request, pk, "force off command send")
@extend_schema(request=None, responses=ActionStatusSerializer)
@action(detail=True, methods=["post"])
def suspend(self, request, pk=None, compute_pk=None):
queryset = get_instance(request.user, pk)
if compute_pk is not None and str(queryset.compute_id) != str(compute_pk):
raise Http404()
return instance_action_response(suspend, request, pk, "suspend command send")
@extend_schema(request=None, responses=ActionStatusSerializer)
@action(detail=True, methods=["post"])
def resume(self, request, pk=None, compute_pk=None):
queryset = get_instance(request.user, pk)
if compute_pk is not None and str(queryset.compute_id) != str(compute_pk):
raise Http404()
return instance_action_response(resume, request, pk, "resume command send")
class MigrateViewSet(viewsets.ViewSet):
"""
A viewset for migrating instances.
"""
permission_classes = [IsSuperUser]
serializer_class = MigrateSerializer
queryset = ""
@extend_schema(responses={202: OperationSerializer, 400: dict})
def create(self, request):
serializer = MigrateSerializer(data=request.data)
if not serializer.is_valid():
return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
data = serializer.validated_data
raw = {"instance": data["instance"].pk, "target": data["target_compute"].pk, "disk_pools": data["disk_pools"],
**{name: data.get(name, False) for name in MIGRATE_OPTIONS}}
op = jobs.submit("instance.migrate", request.user, raw, data["submission_key"])
return Response(OperationSerializer(op, context={"request": request}).data, status=status.HTTP_202_ACCEPTED,
headers={"Location": reverse("operation-detail", args=[op.pk])})
class FlavorViewSet(viewsets.ModelViewSet):
"""
API endpoint that allows flavor to be viewed or edited.
"""
queryset = Flavor.objects.all().order_by("id")
lookup_value_converter = "int"
serializer_class = FlavorSerializer
def get_permissions(self):
if self.action in ["list", "retrieve"]:
return [permissions.IsAuthenticated()]
return [IsSuperUser()]
def perform_create(self, serializer):
with audit(self.request, None, f"Flavor {serializer.validated_data['label']}", "add"):
serializer.save()
def perform_update(self, serializer):
flavor = serializer.instance
subject, before = f"Flavor {flavor.label}", snapshot(flavor)
with audit(self.request, None, subject, "change") as entry:
serializer.save()
fields = changed_fields(before, snapshot(flavor))
entry.action = "change " + ", ".join(fields)
entry.skip = not fields
def perform_destroy(self, instance):
with audit(self.request, None, f"Flavor {instance.label}", "delete"):
instance.delete()
class CreateInstanceViewSet(viewsets.ViewSet):
"""
A viewset for creating instances.
"""
permission_classes = [IsSuperUser]
serializer_class = CreateInstanceSerializer
queryset = ""
@extend_schema(responses={202: OperationSerializer, 400: dict})
def create(self, request, compute_pk=None, arch=None, machine=None):
serializer = CreateInstanceSerializer(data=request.data,
context={"compute_pk": compute_pk, "arch": arch, "machine": machine})
if not serializer.is_valid():
return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
data = dict(serializer.validated_data)
key = data.pop("submission_key")
op = jobs.submit("instance.create", request.user, {**data, "compute": compute_pk, "arch": arch,
"machine": machine}, key)
return Response(OperationSerializer(op, context={"request": request}).data, status=status.HTTP_202_ACCEPTED,
headers={"Location": reverse("operation-detail", args=[op.pk])})