forked from pulp/pulpcore
/
task.py
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/
task.py
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from gettext import gettext as _
from django.db.models import Prefetch
from django_filters.rest_framework import filters
from drf_spectacular.utils import extend_schema
from rest_framework import mixins, status
from rest_framework.decorators import action
from rest_framework.response import Response
from rest_framework.serializers import ValidationError
from pulpcore.filters import BaseFilterSet
from pulpcore.app.models import (
Task,
TaskGroup,
TaskSchedule,
Worker,
CreatedResource,
RepositoryVersion,
)
from pulpcore.app.models.role import UserRole
from pulpcore.app.response import OperationPostponedResponse
from pulpcore.app.serializers import (
AsyncOperationResponseSerializer,
MinimalTaskSerializer,
PurgeSerializer,
TaskCancelSerializer,
TaskGroupSerializer,
TaskScheduleSerializer,
TaskSerializer,
WorkerSerializer,
)
from pulpcore.app.tasks import purge
from pulpcore.app.util import get_domain
from pulpcore.app.viewsets import NamedModelViewSet, RolesMixin
from pulpcore.app.viewsets.base import DATETIME_FILTER_OPTIONS, NAME_FILTER_OPTIONS
from pulpcore.app.viewsets.custom_filters import (
ReservedResourcesFilter,
ReservedResourcesInFilter,
ReservedResourcesRecordFilter,
CreatedResourcesFilter,
)
from pulpcore.constants import TASK_INCOMPLETE_STATES, TASK_STATES
from pulpcore.tasking.tasks import dispatch, cancel_task
class TaskFilter(BaseFilterSet):
# This filter is deprecated and badly documented, but we need to keep it for compatibility
# reasons
reserved_resources_record = ReservedResourcesRecordFilter(
help_text=_("Deprecated, will be removed in pulpcore 3.55. Use reserved_resources instead.")
)
created_resources = CreatedResourcesFilter()
# Non model field filters
reserved_resources = ReservedResourcesFilter(exclusive=True, shared=True)
reserved_resources__in = ReservedResourcesInFilter(exclusive=True, shared=True)
exclusive_resources = ReservedResourcesFilter(exclusive=True, shared=False)
exclusive_resources__in = ReservedResourcesInFilter(exclusive=True, shared=False)
shared_resources = ReservedResourcesFilter(exclusive=False, shared=True)
shared_resources__in = ReservedResourcesInFilter(exclusive=False, shared=True)
class Meta:
model = Task
fields = {
"state": ["exact", "in", "ne"],
"worker": ["exact", "in", "isnull"],
"name": ["exact", "contains", "in", "ne"],
"logging_cid": ["exact", "contains"],
"started_at": DATETIME_FILTER_OPTIONS,
"finished_at": DATETIME_FILTER_OPTIONS,
"parent_task": ["exact"],
"child_tasks": ["exact"],
"task_group": ["exact"],
"reserved_resources_record": ["exact"],
"created_resources": ["exact"],
}
class TaskViewSet(
NamedModelViewSet,
mixins.RetrieveModelMixin,
mixins.ListModelMixin,
mixins.DestroyModelMixin,
RolesMixin,
):
queryset = Task.objects.all()
endpoint_name = "tasks"
filterset_class = TaskFilter
serializer_class = TaskSerializer
minimal_serializer_class = MinimalTaskSerializer
ordering = "-pulp_created"
queryset_filtering_required_permission = "core.view_task"
DEFAULT_ACCESS_POLICY = {
"statements": [
{"action": ["list"], "principal": "authenticated", "effect": "allow"},
{
"action": ["retrieve", "my_permissions"],
"principal": "authenticated",
"effect": "allow",
"condition": "has_model_or_domain_or_obj_perms:core.view_task",
},
{
"action": ["destroy"],
"principal": "authenticated",
"effect": "allow",
"condition": "has_model_or_domain_or_obj_perms:core.delete_task",
},
{
"action": ["update", "partial_update"],
"principal": "authenticated",
"effect": "allow",
"condition": "has_model_or_domain_or_obj_perms:core.change_task",
},
# 'purge' is filtered by current-user and core.delete_task permissions at the queryset
# level, and needs no extra protections here
{
"action": ["purge"],
"principal": "authenticated",
"effect": "allow",
},
{
"action": ["list_roles", "add_role", "remove_role"],
"principal": "authenticated",
"effect": "allow",
"condition": "has_model_or_domain_or_obj_perms:core.manage_roles_task",
},
],
"creation_hooks": [
{
"function": "add_roles_for_object_creator",
"parameters": {"roles": "core.task_owner"},
}
],
"queryset_scoping": {"function": "scope_queryset"},
}
LOCKED_ROLES = {
"core.task_owner": {
"description": "Allow all actions on a task.",
"permissions": [
"core.view_task",
"core.change_task",
"core.delete_task",
"core.manage_roles_task",
],
},
"core.task_viewer": ["core.view_task"],
}
def get_serializer(self, *args, **kwargs):
"""Set repo_ver_mapping in serializer context for optimized serialization."""
many = kwargs.get("many", False)
serializer = super().get_serializer(*args, **kwargs)
# Perform optimization for list & retrieve actions and only during **full** serialization
# "swagger_fake_view" is set when drf_spectacular is building the OpenAPI spec
if (
self.action in ("list", "retrieve")
and self.get_serializer_class() == TaskSerializer
and not getattr(self, "swagger_fake_view", False)
):
task_list = args[0] if many else [args[0]]
created_resources = [cr for task in task_list for cr in task.created_resources.all()]
# Optimization for RepositoryVersion created_resources
repo_ver_pks = [
cr.object_id
for cr in created_resources
if issubclass(cr.content_type.model_class(), RepositoryVersion)
]
repo_vers = (
RepositoryVersion.objects.select_related("repository")
.filter(pk__in=repo_ver_pks, complete=True)
.only("pk", "number", "repository__pulp_type")
)
serializer.context["repo_ver_mapping"] = {rv.pk: rv for rv in repo_vers}
# Assume, all tasks and related resources are of the same domain.
serializer.context["pulp_domain"] = get_domain()
# Optimization for User created_by
task_pks = [t.pk for t in task_list]
user_roles = UserRole.objects.filter(
role__name="core.task_owner", object_id__in=task_pks
).order_by("-pulp_created")
serializer.context["task_user_mapping"] = {u.object_id: u.user_id for u in user_roles}
return serializer
def get_queryset(self):
qs = super().get_queryset()
if self.action in ("list", "retrieve"):
qs = qs.prefetch_related(
"progress_reports",
Prefetch(
"created_resources",
queryset=CreatedResource.objects.select_related("content_type"),
),
Prefetch("child_tasks", queryset=Task.objects.only("pk")),
)
return qs
@extend_schema(
description="This operation cancels a task.",
summary="Cancel a task",
operation_id="tasks_cancel",
responses={200: TaskSerializer, 409: TaskSerializer},
)
def partial_update(self, request, pk=None, partial=True):
task = self.get_object()
if "state" not in request.data:
raise ValidationError(_("'state' must be provided with the request."))
if request.data["state"] != "canceled":
raise ValidationError(_("The only acceptable value for 'state' is 'canceled'."))
task = cancel_task(task.pk)
# Check whether task is actually canceled
http_status = (
None
if task.state in [TASK_STATES.CANCELING, TASK_STATES.CANCELED]
else status.HTTP_409_CONFLICT
)
serializer = self.serializer_class(task, context={"request": request})
return Response(serializer.data, status=http_status)
def destroy(self, request, pk=None):
task = self.get_object()
if task.state in TASK_INCOMPLETE_STATES:
return Response(status=status.HTTP_409_CONFLICT)
return super().destroy(request, pk)
def get_serializer_class(self):
if self.action == "partial_update":
return TaskCancelSerializer
return super().get_serializer_class()
@extend_schema(
description=(
"Trigger an asynchronous task that deletes completed tasks that finished prior"
" to a specified timestamp."
),
summary="Purge Completed Tasks",
operation_id="tasks_purge",
request=PurgeSerializer,
responses={202: AsyncOperationResponseSerializer},
)
@action(detail=False, methods=["post"])
def purge(self, request):
"""
Purge task-records for tasks in 'final' states.
"""
serializer = PurgeSerializer(data=request.data)
serializer.is_valid(raise_exception=True)
task = dispatch(
purge, args=[serializer.data["finished_before"], list(serializer.data["states"])]
)
return OperationPostponedResponse(task, request)
class TaskGroupViewSet(NamedModelViewSet, mixins.RetrieveModelMixin, mixins.ListModelMixin):
queryset = TaskGroup.objects.all()
endpoint_name = "task-groups"
serializer_class = TaskGroupSerializer
ordering = "-pulp_created"
class WorkerFilter(BaseFilterSet):
online = filters.BooleanFilter(method="filter_online")
missing = filters.BooleanFilter(method="filter_missing")
class Meta:
model = Worker
fields = {
"name": NAME_FILTER_OPTIONS,
"last_heartbeat": DATETIME_FILTER_OPTIONS,
}
def filter_online(self, queryset, name, value):
online_workers = Worker.objects.online()
if value:
return queryset.filter(pk__in=online_workers)
else:
return queryset.exclude(pk__in=online_workers)
def filter_missing(self, queryset, name, value):
missing_workers = Worker.objects.missing()
if value:
return queryset.filter(pk__in=missing_workers)
else:
return queryset.exclude(pk__in=missing_workers)
class WorkerViewSet(NamedModelViewSet, mixins.RetrieveModelMixin, mixins.ListModelMixin):
queryset = Worker.objects.all()
serializer_class = WorkerSerializer
endpoint_name = "workers"
http_method_names = ["get", "options"]
lookup_value_regex = "[^/]+"
filterset_class = WorkerFilter
class TaskScheduleViewSet(
NamedModelViewSet,
mixins.RetrieveModelMixin,
mixins.ListModelMixin,
RolesMixin,
):
"""
ViewSet to monitor task schedules.
"""
queryset = TaskSchedule.objects.all()
endpoint_name = "task-schedules"
filterset_fields = {
"name": ["exact", "contains"],
"task_name": ["exact", "contains"],
}
serializer_class = TaskScheduleSerializer
ordering = "-pulp_created"
queryset_filtering_required_permission = "core.view_taskschedule"
DEFAULT_ACCESS_POLICY = {
"statements": [
{"action": ["list"], "principal": "authenticated", "effect": "allow"},
{
"action": ["retrieve", "my_permissions"],
"principal": "authenticated",
"effect": "allow",
"condition": "has_model_or_domain_or_obj_perms:core.view_taskschedule",
},
{
"action": ["list_roles", "add_role", "remove_role"],
"principal": "authenticated",
"effect": "allow",
"condition": "has_model_or_domain_or_obj_perms:core.manage_roles_taskschedule",
},
],
"creation_hooks": [
{
"function": "add_roles_for_object_creator",
"parameters": {"roles": "core.taskschedule_owner"},
}
],
"queryset_scoping": {"function": "scope_queryset"},
}
LOCKED_ROLES = {
"core.taskschedule_owner": {
"description": "Allow all actions on a taskschedule.",
"permissions": [
"core.view_taskschedule",
"core.manage_roles_taskschedule",
],
},
"core.taskschedule_viewer": ["core.view_taskschedule"],
}