Properly log if the tags list has been truncated

app/workers/container_expiration_policies/cleanup_container_repository_worker.rb

@@ -109,6 +109,13 @@ module ContainerExpirationPolicies
 
         log_extra_metadata_on_done(field, value)
       end
+
+      before_truncate_size = result.payload[:cleanup_tags_service_before_truncate_size]
+      after_truncate_size = result.payload[:cleanup_tags_service_after_truncate_size]
+      truncated = before_truncate_size &&
+                    after_truncate_size &&
+                    before_truncate_size != after_truncate_size
+      log_extra_metadata_on_done(:cleanup_tags_service_truncated, !!truncated)
     end
   end
 end

spec/workers/container_expiration_policies/cleanup_container_repository_worker_spec.rb

@@ -3,6 +3,8 @@
 require 'spec_helper'
 
 RSpec.describe ContainerExpirationPolicies::CleanupContainerRepositoryWorker do
+  using RSpec::Parameterized::TableSyntax
+
   let_it_be(:repository, reload: true) { create(:container_repository, :cleanup_scheduled) }
   let_it_be(:project) { repository.project }
   let_it_be(:policy) { project.container_expiration_policy }
@@ -42,11 +44,32 @@ RSpec.describe ContainerExpirationPolicies::CleanupContainerRepositoryWorker do
             service_response = cleanup_service_response(status: :unfinished, repository: repository, cleanup_tags_service_after_truncate_size: 10, cleanup_tags_service_before_delete_size: 5)
             expect(ContainerExpirationPolicies::CleanupService)
               .to receive(:new).with(repository).and_return(double(execute: service_response))
-            expect_log_extra_metadata(service_response: service_response, cleanup_status: :unfinished)
+            expect_log_extra_metadata(service_response: service_response, cleanup_status: :unfinished, truncated: true)
 
             subject
           end
         end
+
+        context 'the truncated log field' do
+          where(:before_truncate_size, :after_truncate_size, :truncated) do
+            100 | 100 | false
+            100 | 80  | true
+            nil | 100 | false
+            100 | nil | false
+            nil | nil | false
+          end
+
+          with_them do
+            it 'is logged properly' do
+              service_response = cleanup_service_response(status: :unfinished, repository: repository, cleanup_tags_service_after_truncate_size: after_truncate_size, cleanup_tags_service_before_truncate_size: before_truncate_size)
+              expect(ContainerExpirationPolicies::CleanupService)
+                .to receive(:new).with(repository).and_return(double(execute: service_response))
+              expect_log_extra_metadata(service_response: service_response, cleanup_status: :unfinished, truncated: truncated)
+
+              subject
+            end
+          end
+        end
       end
 
       context 'with policy running shortly' do
@@ -189,13 +212,14 @@ RSpec.describe ContainerExpirationPolicies::CleanupContainerRepositoryWorker do
       )
     end
 
-    def expect_log_extra_metadata(service_response:, cleanup_status: :finished)
+    def expect_log_extra_metadata(service_response:, cleanup_status: :finished, truncated: false)
       expect(worker).to receive(:log_extra_metadata_on_done).with(:cleanup_status, cleanup_status)
       expect(worker).to receive(:log_extra_metadata_on_done).with(:container_repository_id, repository.id)
-      expect(worker).to receive(:log_extra_metadata_on_done).with(:cleanup_tags_service_original_size, service_response.payload[:cleanup_tags_service_original_size])
-      expect(worker).to receive(:log_extra_metadata_on_done).with(:cleanup_tags_service_before_truncate_size, service_response.payload[:cleanup_tags_service_before_truncate_size])
-      expect(worker).to receive(:log_extra_metadata_on_done).with(:cleanup_tags_service_after_truncate_size, service_response.payload[:cleanup_tags_service_after_truncate_size])
-      expect(worker).to receive(:log_extra_metadata_on_done).with(:cleanup_tags_service_before_delete_size, service_response.payload[:cleanup_tags_service_before_delete_size])
+      %i[cleanup_tags_service_original_size cleanup_tags_service_before_truncate_size cleanup_tags_service_after_truncate_size cleanup_tags_service_before_delete_size].each do |field|
+        value = service_response.payload[field]
+        expect(worker).to receive(:log_extra_metadata_on_done).with(field, value) unless value.nil?
+      end
+      expect(worker).to receive(:log_extra_metadata_on_done).with(:cleanup_tags_service_truncated, truncated)
     end
   end