Merge branch '301146-1s-server-side-timeouts-on-elasticsearch-counts' into 'master'

Set 1s server side timeout on Elasticsearch counts

See merge request gitlab-org/gitlab!53435

ee/changelogs/unreleased/301146-1s-server-side-timeouts-on-elasticsearch-counts.yml

+---
+title: Set 1s server side timeout on Elasticsearch counts
+merge_request: 53435
+author:
+type: performance

ee/lib/elastic/latest/application_class_proxy.rb

@@ -10,6 +10,11 @@ module Elastic
       def search(query, search_options = {})
         es_options = routing_options(search_options)
 
+        # Counts need to be fast as we load one count per type of document
+        # on every page load. Fail early if they are slow since they don't
+        # need to be accurate.
+        es_options[:timeout] = '1s' if search_options[:count_only]
+
         # Calling elasticsearch-ruby method
         super(query, es_options)
       end

ee/spec/support/shared_examples/lib/gitlab/elastic/search_results_shared_examples.rb

@@ -40,6 +40,7 @@ RSpec.shared_examples 'does not load results for count only queries' do |scopes|
         expect(request.dig(:body, :size)).to eq(0)
         expect(request.dig(:body, :query, :bool, :must)).to be_blank
         expect(request[:highlight]).to be_blank
+        expect(request.dig(:params, :timeout)).to eq('1s')
       end
     end
   end