Disable pause indexing if reindex in progress

Changelog: changed

ee/app/views/admin/application_settings/_elasticsearch_form.html.haml

@@ -48,7 +48,7 @@
               .form-group
                 .form-check
                 - pending_migrations = elasticsearch_available && Elastic::DataMigrationService.pending_migrations? && Gitlab::CurrentSettings.elasticsearch_pause_indexing?
-                - disable_checkbox = !Gitlab::CurrentSettings.elasticsearch_indexing? || pending_migrations
+                - disable_checkbox = !Gitlab::CurrentSettings.elasticsearch_indexing? || pending_migrations || @elasticsearch_reindexing_task&.in_progress?
                 = f.check_box :elasticsearch_pause_indexing, class: 'form-check-input', data: { qa_selector: 'pause_checkbox' }, disabled: disable_checkbox
                 = f.label :elasticsearch_pause_indexing, class: 'form-check-label' do
                   = _('Pause Elasticsearch indexing')

ee/changelogs/unreleased/296884-disable-unpausing-indexing-if-a-reindex-is-in-progress.yml

+---
+title: Disable pause indexing checkbox if a reindex is in progress
+merge_request: 60953
+author:
+type: changed

ee/spec/views/admin/application_settings/_elasticsearch_form.html.haml_spec.rb

@@ -97,6 +97,22 @@ RSpec.describe 'admin/application_settings/_elasticsearch_form' do
       assign(:elasticsearch_reindexing_task, task)
     end
 
+    context 'when task is in progress' do
+      let(:task) { build(:elastic_reindexing_task, state: :reindexing) }
+
+      it 'renders a disabled pause checkbox' do
+        render
+
+        expect(rendered).to have_css('input[id=application_setting_elasticsearch_pause_indexing][disabled="disabled"]')
+      end
+
+      it 'renders a disabled trigger cluster reindexing link' do
+        render
+
+        expect(rendered).to have_css('a.gl-button[disabled="disabled"]', text: 'Trigger cluster reindexing')
+      end
+    end
+
     context 'without extended details' do
       let(:task) { build(:elastic_reindexing_task) }