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57 lines
1.9 KiB
57 lines
1.9 KiB
from rest_framework.pagination import LimitOffsetPagination
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from rest_framework.request import Request
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from common.utils import get_logger
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from assets.models import Node
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logger = get_logger(__name__)
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class AssetPaginationBase(LimitOffsetPagination):
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_request = None
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_view = None
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_user = None
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def init_attrs(self, queryset, request: Request, view=None):
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self._request = request
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self._view = view
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self._user = request.user
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def paginate_queryset(self, queryset, request: Request, view=None):
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self.init_attrs(queryset, request, view)
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return super().paginate_queryset(queryset, request, view=None)
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def get_count(self, queryset):
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exclude_query_params = {
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self.limit_query_param,
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self.offset_query_param,
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'key', 'all', 'show_current_asset',
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'cache_policy', 'display', 'draw',
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'order', 'node', 'node_id', 'fields_size',
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}
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for k, v in self._request.query_params.items():
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if k not in exclude_query_params and v is not None:
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logger.warn(f'Not hit node.assets_amount because find a unknown query_param '
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f'`{k}` -> {self._request.get_full_path()}')
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return super().get_count(queryset)
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node_assets_count = self.get_count_from_nodes(queryset)
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if node_assets_count is None:
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return super().get_count(queryset)
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return node_assets_count
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def get_count_from_nodes(self, queryset):
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raise NotImplementedError
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class NodeAssetTreePagination(AssetPaginationBase):
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def get_count_from_nodes(self, queryset):
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is_query_all = self._view.is_query_node_all_assets
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if not is_query_all:
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return None
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node = self._view.node
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if not node:
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node = Node.org_root()
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if node:
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logger.debug(f'Hit node assets_amount cache: [{node.assets_amount}]')
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return node.assets_amount
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