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# ~*~ coding: utf-8 ~*~
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from collections import namedtuple
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from rest_framework import status
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from rest_framework.serializers import ValidationError
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from rest_framework.response import Response
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from django.utils.translation import ugettext_lazy as _
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from django.shortcuts import get_object_or_404, Http404
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from common.utils import get_logger, get_object_or_none
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from common.tree import TreeNodeSerializer
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from orgs.mixins.api import OrgModelViewSet
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from orgs.mixins import generics
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from ..hands import IsOrgAdmin
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from ..models import Node
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from ..tasks import (
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update_node_assets_hardware_info_manual,
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test_node_assets_connectivity_manual,
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)
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from .. import serializers
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logger = get_logger(__file__)
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__all__ = [
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'NodeViewSet', 'NodeChildrenApi', 'NodeAssetsApi',
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'NodeAddAssetsApi', 'NodeRemoveAssetsApi', 'NodeReplaceAssetsApi',
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'NodeAddChildrenApi', 'NodeListAsTreeApi',
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'NodeChildrenAsTreeApi',
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'NodeTaskCreateApi',
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]
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class NodeViewSet(OrgModelViewSet):
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model = Node
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filter_fields = ('value', 'key', 'id')
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search_fields = ('value', )
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permission_classes = (IsOrgAdmin,)
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serializer_class = serializers.NodeSerializer
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# 仅支持根节点指直接创建，子节点下的节点需要通过children接口创建
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def perform_create(self, serializer):
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child_key = Node.org_root().get_next_child_key()
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serializer.validated_data["key"] = child_key
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serializer.save()
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def perform_update(self, serializer):
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node = self.get_object()
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if node.is_org_root() and node.value != serializer.validated_data['value']:
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msg = _("You can't update the root node name")
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raise ValidationError({"error": msg})
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return super().perform_update(serializer)
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def destroy(self, request, *args, **kwargs):
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node = self.get_object()
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if node.has_children_or_has_assets():
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error = _("Deletion failed and the node contains children or assets")
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return Response(data={'error': error}, status=status.HTTP_403_FORBIDDEN)
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return super().destroy(request, *args, **kwargs)
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class NodeListAsTreeApi(generics.ListAPIView):
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"""
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获取节点列表树
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[
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{
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"id": "",
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"name": "",
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"pId": "",
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"meta": ""
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}
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]
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"""
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model = Node
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permission_classes = (IsOrgAdmin,)
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serializer_class = TreeNodeSerializer
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@staticmethod
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def to_tree_queryset(queryset):
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queryset = [node.as_tree_node() for node in queryset]
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return queryset
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def filter_queryset(self, queryset):
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queryset = super().filter_queryset(queryset)
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queryset = self.to_tree_queryset(queryset)
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return queryset
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class NodeChildrenApi(generics.ListCreateAPIView):
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permission_classes = (IsOrgAdmin,)
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serializer_class = serializers.NodeSerializer
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instance = None
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is_initial = False
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def initial(self, request, *args, **kwargs):
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self.instance = self.get_object()
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return super().initial(request, *args, **kwargs)
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def perform_create(self, serializer):
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data = serializer.validated_data
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_id = data.get("id")
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value = data.get("value")
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if not value:
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value = self.instance.get_next_child_preset_name()
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node = self.instance.create_child(value=value, _id=_id)
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# 避免查询 full value
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node._full_value = node.value
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serializer.instance = node
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def get_object(self):
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pk = self.kwargs.get('pk') or self.request.query_params.get('id')
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key = self.request.query_params.get("key")
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if not pk and not key:
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node = Node.org_root()
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self.is_initial = True
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return node
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if pk:
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node = get_object_or_404(Node, pk=pk)
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else:
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node = get_object_or_404(Node, key=key)
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return node
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def get_queryset(self):
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query_all = self.request.query_params.get("all", "0") == "all"
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if not self.instance:
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return Node.objects.none()
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if self.is_initial:
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with_self = True
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else:
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with_self = False
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if query_all:
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queryset = self.instance.get_all_children(with_self=with_self)
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else:
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queryset = self.instance.get_children(with_self=with_self)
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return queryset
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class NodeChildrenAsTreeApi(NodeChildrenApi):
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"""
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节点子节点作为树返回，
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[
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{
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"id": "",
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"name": "",
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"pId": "",
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"meta": ""
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}
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]
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"""
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model = Node
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serializer_class = TreeNodeSerializer
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http_method_names = ['get']
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def get_queryset(self):
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queryset = super().get_queryset()
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queryset = [node.as_tree_node() for node in queryset]
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queryset = self.add_assets_if_need(queryset)
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queryset = sorted(queryset)
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return queryset
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def add_assets_if_need(self, queryset):
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include_assets = self.request.query_params.get('assets', '0') == '1'
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if not include_assets:
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return queryset
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assets = self.instance.get_assets().only(
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"id", "hostname", "ip", "os",
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"org_id", "protocols",
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)
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for asset in assets:
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queryset.append(asset.as_tree_node(self.instance))
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return queryset
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def check_need_refresh_nodes(self):
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if self.request.query_params.get('refresh', '0') == '1':
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Node.refresh_nodes()
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class NodeAssetsApi(generics.ListAPIView):
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permission_classes = (IsOrgAdmin,)
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serializer_class = serializers.AssetSerializer
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def get_queryset(self):
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node_id = self.kwargs.get('pk')
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query_all = self.request.query_params.get('all')
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instance = get_object_or_404(Node, pk=node_id)
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if query_all:
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return instance.get_all_assets()
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else:
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return instance.get_assets()
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class NodeAddChildrenApi(generics.UpdateAPIView):
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model = Node
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permission_classes = (IsOrgAdmin,)
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serializer_class = serializers.NodeAddChildrenSerializer
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instance = None
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def put(self, request, *args, **kwargs):
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instance = self.get_object()
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nodes_id = request.data.get("nodes")
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children = [get_object_or_none(Node, id=pk) for pk in nodes_id]
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for node in children:
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if not node:
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continue
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node.parent = instance
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return Response("OK")
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class NodeAddAssetsApi(generics.UpdateAPIView):
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model = Node
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serializer_class = serializers.NodeAssetsSerializer
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permission_classes = (IsOrgAdmin,)
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instance = None
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def perform_update(self, serializer):
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assets = serializer.validated_data.get('assets')
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instance = self.get_object()
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instance.assets.add(*tuple(assets))
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class NodeRemoveAssetsApi(generics.UpdateAPIView):
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model = Node
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serializer_class = serializers.NodeAssetsSerializer
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permission_classes = (IsOrgAdmin,)
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instance = None
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def perform_update(self, serializer):
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assets = serializer.validated_data.get('assets')
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instance = self.get_object()
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if instance != Node.org_root():
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instance.assets.remove(*tuple(assets))
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else:
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assets = [asset for asset in assets if asset.nodes.count() > 1]
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instance.assets.remove(*tuple(assets))
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class NodeReplaceAssetsApi(generics.UpdateAPIView):
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model = Node
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serializer_class = serializers.NodeAssetsSerializer
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permission_classes = (IsOrgAdmin,)
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instance = None
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def perform_update(self, serializer):
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assets = serializer.validated_data.get('assets')
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instance = self.get_object()
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for asset in assets:
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asset.nodes.set([instance])
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class NodeTaskCreateApi(generics.CreateAPIView):
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model = Node
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serializer_class = serializers.NodeTaskSerializer
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permission_classes = (IsOrgAdmin,)
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def get_object(self):
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node_id = self.kwargs.get('pk')
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node = get_object_or_none(self.model, id=node_id)
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return node
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@staticmethod
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def set_serializer_data(s, task):
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data = getattr(s, '_data', {})
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data["task"] = task.id
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setattr(s, '_data', data)
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@staticmethod
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def refresh_nodes_cache():
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Node.refresh_nodes()
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Task = namedtuple('Task', ['id'])
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task = Task(id="0")
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return task
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def perform_create(self, serializer):
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action = serializer.validated_data["action"]
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node = self.get_object()
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if action == "refresh_cache" and node is None:
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task = self.refresh_nodes_cache()
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self.set_serializer_data(serializer, task)
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return
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if node is None:
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raise Http404()
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if action == "refresh":
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task = update_node_assets_hardware_info_manual.delay(node)
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else:
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task = test_node_assets_connectivity_manual.delay(node)
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self.set_serializer_data(serializer, task)
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