[COST-5711] Provide endpoint of all regions for integrations team (#5395

)

* [COST-5711] Provide endpoint of all regions for integrations team

koku/api/resource_types/aws_regions/view.py

@@ -3,13 +3,16 @@
 # SPDX-License-Identifier: Apache-2.0
 #
 """View for AWS by regions."""
+import boto3
 from django.conf import settings
 from django.db.models import F
 from django.utils.decorators import method_decorator
 from django.views.decorators.vary import vary_on_headers
 from rest_framework import filters
 from rest_framework import generics
 from rest_framework import status
+from rest_framework import views
+from rest_framework.permissions import AllowAny
 from rest_framework.response import Response
 
 from api.common import CACHE_RH_IDENTITY_HEADER
@@ -55,3 +58,37 @@ def list(self, request):
             return super().list(request)
         self.queryset = self.queryset.filter(usage_account_id__in=user_access)
         return super().list(request)
+
+
+class AWSAllRegionView(views.APIView):
+    """API GET list view for AWS of all regions"""
+
+    permission_classes = [AllowAny]
+
+    @method_decorator(vary_on_headers(CACHE_RH_IDENTITY_HEADER))
+    def get(self, request):
+        supported_query_params = ["limit", "offset", "search"]
+        error_message = {}
+        search_values = []
+        # Test for only supported query_params
+        if self.request.query_params:
+            for key in self.request.query_params:
+                if key not in supported_query_params:
+                    error_message[key] = [{"Unsupported parameter"}]
+                    return Response(error_message, status=status.HTTP_400_BAD_REQUEST)
+        search_value_str = self.request.query_params.get("search")
+        if search_value_str:
+            search_values = search_value_str.split(",")
+        regions = boto3.Session().get_available_regions("s3")
+        filtered_regions = []
+        for region in regions:
+            if any(value in region for value in search_values):
+                filtered_regions.append(region)
+        if not filtered_regions:
+            filtered_regions = regions
+        filtered_regions = list(set(filtered_regions))
+        queryset = [{"value": region} for region in filtered_regions]
+        paginator = ResourceTypeViewPaginator()
+        paginated_queryset = paginator.paginate_queryset(queryset, request)
+        serializer = ResourceTypeSerializer(paginated_queryset, many=True)
+        return paginator.get_paginated_response(serializer.data)

koku/api/resource_types/test/test_views.py

@@ -78,6 +78,7 @@ class ResourceTypesViewTest(IamTestCase):
     ENDPOINTS_AWS = [
         "aws-accounts",
         "aws-regions",
+        "aws-all-regions",
         "aws-services",
         "aws-organizational-units",
         "aws-categories",
@@ -249,6 +250,8 @@ def test_rbacpermissions_aws_account_data_returns_null(self):
         """Test that Aws endpoints accept valid Aws permissions."""
         for endpoint in self.ENDPOINTS_AWS:
             with self.subTest(endpoint=endpoint):
+                if endpoint == "aws-all-regions":
+                    continue
                 url = reverse(endpoint)
                 response = self.client.get(url, **self.headers)
                 self.assertEqual(response.status_code, status.HTTP_200_OK)

koku/api/urls.py

@@ -12,6 +12,7 @@
 from api.views import AccountSettings
 from api.views import AWSAccountRegionView
 from api.views import AWSAccountView
+from api.views import AWSAllRegionView
 from api.views import AWSCategoryView
 from api.views import AWSCostForecastView
 from api.views import AWSCostView
@@ -443,6 +444,7 @@
     path("resource-types/azure-services/", AzureServiceView.as_view(), name="azure-services"),
     path("resource-types/aws-services/", AWSServiceView.as_view(), name="aws-services"),
     path("resource-types/aws-regions/", AWSAccountRegionView.as_view(), name="aws-regions"),
+    path("resource-types/aws-all-regions/", AWSAllRegionView.as_view(), name="aws-all-regions"),
     path(
         "resource-types/azure-subscription-guids/",
         AzureSubscriptionGuidView.as_view(),

koku/api/views.py

@@ -58,6 +58,7 @@
 from api.resource_types.aws_ec2_compute_os.view import AWSEC2ComputeOperatingSystemView
 from api.resource_types.aws_org_unit.view import AWSOrganizationalUnitView
 from api.resource_types.aws_regions.view import AWSAccountRegionView
+from api.resource_types.aws_regions.view import AWSAllRegionView
 from api.resource_types.aws_services.view import AWSServiceView
 from api.resource_types.azure_regions.view import AzureRegionView
 from api.resource_types.azure_services.view import AzureServiceView