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# -*- coding: utf-8 -*-
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#
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from rest_framework import serializers
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from django.core.validators import RegexValidator
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from django.utils.translation import ugettext_lazy as _
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from orgs.mixins.serializers import BulkOrgResourceModelSerializer
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from ..models import Asset, Node, Platform, SystemUser
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__all__ = [
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'AssetSerializer', 'AssetSimpleSerializer', 'MiniAssetSerializer',
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'ProtocolsField', 'PlatformSerializer',
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'AssetTaskSerializer', 'AssetsTaskSerializer', 'ProtocolsField',
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]
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class ProtocolField(serializers.RegexField):
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protocols = '|'.join(dict(Asset.Protocol.choices).keys())
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default_error_messages = {
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'invalid': _('Protocol format should {}/{}').format(protocols, '1-65535')
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}
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regex = r'^(%s)/(\d{1,5})$' % protocols
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def __init__(self, *args, **kwargs):
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super().__init__(self.regex, **kwargs)
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def validate_duplicate_protocols(values):
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errors = []
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names = []
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for value in values:
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if not value or '/' not in value:
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continue
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name = value.split('/')[0]
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if name in names:
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errors.append(_("Protocol duplicate: {}").format(name))
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names.append(name)
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errors.append('')
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if any(errors):
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raise serializers.ValidationError(errors)
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class ProtocolsField(serializers.ListField):
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default_validators = [validate_duplicate_protocols]
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def __init__(self, *args, **kwargs):
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kwargs['child'] = ProtocolField()
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kwargs['allow_null'] = True
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kwargs['allow_empty'] = True
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kwargs['min_length'] = 1
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kwargs['max_length'] = 4
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super().__init__(*args, **kwargs)
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def to_representation(self, value):
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if not value:
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return []
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return value.split(' ')
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class AssetSerializer(BulkOrgResourceModelSerializer):
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platform = serializers.SlugRelatedField(
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slug_field='name', queryset=Platform.objects.all(), label=_("Platform")
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)
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protocols = ProtocolsField(label=_('Protocols'), required=False, default=['ssh/22'])
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domain_display = serializers.ReadOnlyField(source='domain.name', label=_('Domain name'))
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nodes_display = serializers.ListField(
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child=serializers.CharField(), label=_('Nodes name'), required=False
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)
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labels_display = serializers.ListField(
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child=serializers.CharField(), label=_('Labels name'), required=False, read_only=True
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)
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"""
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资产的数据结构
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"""
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class Meta:
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model = Asset
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fields_mini = ['id', 'hostname', 'ip', 'platform', 'protocols']
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fields_small = fields_mini + [
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'protocol', 'port', 'protocols', 'is_active',
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'public_ip', 'number', 'comment',
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]
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fields_hardware = [
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'vendor', 'model', 'sn', 'cpu_model', 'cpu_count',
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'cpu_cores', 'cpu_vcpus', 'memory', 'disk_total', 'disk_info',
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'os', 'os_version', 'os_arch', 'hostname_raw',
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'cpu_info', 'hardware_info',
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]
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fields_fk = [
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'domain', 'domain_display', 'platform', 'admin_user', 'admin_user_display'
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]
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fields_m2m = [
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'nodes', 'nodes_display', 'labels', 'labels_display',
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]
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read_only_fields = [
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'connectivity', 'date_verified', 'cpu_info', 'hardware_info',
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'created_by', 'date_created',
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]
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fields = fields_small + fields_hardware + fields_fk + fields_m2m + read_only_fields
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extra_kwargs = {
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'protocol': {'write_only': True},
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'port': {'write_only': True},
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'hardware_info': {'label': _('Hardware info'), 'read_only': True},
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'admin_user_display': {'label': _('Admin user display'), 'read_only': True},
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'cpu_info': {'label': _('CPU info')},
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}
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def get_fields(self):
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fields = super().get_fields()
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admin_user_field = fields.get('admin_user')
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# 因为 mixin 中对 fields 有处理，可能不需要返回 admin_user
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if admin_user_field:
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admin_user_field.queryset = SystemUser.objects.filter(type=SystemUser.Type.admin)
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return fields
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@classmethod
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def setup_eager_loading(cls, queryset):
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""" Perform necessary eager loading of data. """
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queryset = queryset.prefetch_related('domain', 'platform', 'admin_user')
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queryset = queryset.prefetch_related('nodes', 'labels')
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return queryset
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def compatible_with_old_protocol(self, validated_data):
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protocols_data = validated_data.pop("protocols", [])
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# 兼容老的api
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name = validated_data.get("protocol")
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port = validated_data.get("port")
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if not protocols_data and name and port:
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protocols_data.insert(0, '/'.join([name, str(port)]))
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elif not name and not port and protocols_data:
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protocol = protocols_data[0].split('/')
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validated_data["protocol"] = protocol[0]
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validated_data["port"] = int(protocol[1])
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if protocols_data:
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validated_data["protocols"] = ' '.join(protocols_data)
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def perform_nodes_display_create(self, instance, nodes_display):
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if not nodes_display:
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return
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nodes_to_set = []
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for full_value in nodes_display:
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node = Node.objects.filter(full_value=full_value).first()
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if node:
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nodes_to_set.append(node)
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else:
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node = Node.create_node_by_full_value(full_value)
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nodes_to_set.append(node)
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instance.nodes.set(nodes_to_set)
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def create(self, validated_data):
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self.compatible_with_old_protocol(validated_data)
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nodes_display = validated_data.pop('nodes_display', '')
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instance = super().create(validated_data)
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self.perform_nodes_display_create(instance, nodes_display)
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return instance
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def update(self, instance, validated_data):
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nodes_display = validated_data.pop('nodes_display', '')
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self.compatible_with_old_protocol(validated_data)
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instance = super().update(instance, validated_data)
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self.perform_nodes_display_create(instance, nodes_display)
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return instance
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class MiniAssetSerializer(serializers.ModelSerializer):
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class Meta:
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model = Asset
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fields = AssetSerializer.Meta.fields_mini
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class PlatformSerializer(serializers.ModelSerializer):
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meta = serializers.DictField(required=False, allow_null=True, label=_('Meta'))
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def __init__(self, *args, **kwargs):
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super().__init__(*args, **kwargs)
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# TODO 修复 drf SlugField RegexValidator bug，之后记得删除
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validators = self.fields['name'].validators
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if isinstance(validators[-1], RegexValidator):
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validators.pop()
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class Meta:
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model = Platform
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fields = [
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'id', 'name', 'base', 'charset',
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'internal', 'meta', 'comment'
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]
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extra_kwargs = {
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'internal': {'read_only': True},
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}
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class AssetSimpleSerializer(serializers.ModelSerializer):
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class Meta:
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model = Asset
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fields = ['id', 'hostname', 'ip', 'port', 'connectivity', 'date_verified']
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class AssetsTaskSerializer(serializers.Serializer):
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ACTION_CHOICES = (
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('refresh', 'refresh'),
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('test', 'test'),
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)
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task = serializers.CharField(read_only=True)
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action = serializers.ChoiceField(choices=ACTION_CHOICES, write_only=True)
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assets = serializers.PrimaryKeyRelatedField(
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queryset=Asset.objects, required=False, allow_empty=True, many=True
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)
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class AssetTaskSerializer(AssetsTaskSerializer):
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ACTION_CHOICES = tuple(list(AssetsTaskSerializer.ACTION_CHOICES) + [
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('push_system_user', 'push_system_user'),
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('test_system_user', 'test_system_user')
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])
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action = serializers.ChoiceField(choices=ACTION_CHOICES, write_only=True)
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asset = serializers.PrimaryKeyRelatedField(
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queryset=Asset.objects, required=False, allow_empty=True, many=False
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)
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system_users = serializers.PrimaryKeyRelatedField(
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queryset=SystemUser.objects, required=False, allow_empty=True, many=True
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)
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