feat(applications): 添加 k8s 应用

apps/perms/serializers/k8s_app_permission.py

@@ -0,0 +1,50 @@
+# coding: utf-8
+#
+from django.db.models import Count
+from rest_framework import serializers
+
+from orgs.mixins.serializers import BulkOrgResourceModelSerializer
+from .. import models
+
+__all__ = [
+    'K8sAppPermissionSerializer', 'K8sAppPermissionListSerializer'
+]
+
+
+class AmountMixin:
+    @classmethod
+    def setup_eager_loading(cls, queryset):
+        """ Perform necessary eager loading of data. """
+        queryset = queryset.annotate(
+            users_amount=Count('users', distinct=True), user_groups_amount=Count('user_groups', distinct=True),
+            k8s_apps_amount=Count('k8s_apps', distinct=True),
+            system_users_amount=Count('system_users', distinct=True)
+        )
+        return queryset
+
+
+class K8sAppPermissionSerializer(AmountMixin, BulkOrgResourceModelSerializer):
+    class Meta:
+        model = models.K8sAppPermission
+        fields = [
+            'id', 'name', 'users', 'user_groups', 'k8s_apps', 'system_users',
+            'comment', 'is_active', 'date_start', 'date_expired', 'is_valid',
+            'created_by', 'date_created', 'users_amount', 'user_groups_amount',
+            'k8s_apps_amount', 'system_users_amount',
+        ]
+        read_only_fields = [
+            'created_by', 'date_created', 'users_amount', 'user_groups_amount',
+            'k8s_apps_amount', 'system_users_amount', 'id'
+        ]
+
+
+class K8sAppPermissionListSerializer(AmountMixin, BulkOrgResourceModelSerializer):
+    is_expired = serializers.BooleanField()
+
+    class Meta:
+        model = models.K8sAppPermission
+        fields = [
+            'id', 'name', 'comment', 'is_active', 'users_amount', 'user_groups_amount',
+            'date_start', 'date_expired', 'is_valid', 'k8s_apps_amount', 'system_users_amount',
+            'created_by', 'date_created', 'is_expired'
+        ]