Limit snippet search count

Limits the search count query for snippets. Instead of showing
the complete number of snippets in the database, the UI will
display a text like 100+ indicating that there are more records

app/services/search/snippet_service.rb

@@ -9,9 +9,7 @@ module Search
     end
 
     def execute
-      snippets = SnippetsFinder.new(current_user).execute
-
-      Gitlab::SnippetSearchResults.new(snippets, params[:search])
+      Gitlab::SnippetSearchResults.new(current_user, params[:search])
     end
 
     def scope

changelogs/unreleased/fj-32643-limit-snippets-search-count.yml

+---
+title: Limit snippets search count
+merge_request: 17585
+author:
+type: performance

ee/lib/gitlab/elastic/snippet_search_results.rb

@@ -3,38 +3,49 @@
 module Gitlab
   module Elastic
     class SnippetSearchResults < ::Gitlab::SnippetSearchResults
-      def initialize(user, query)
-        @user = user
-        @query = query
-      end
-
-      def objects(scope, page = nil)
+      def formatted_count(scope)
         case scope
         when 'snippet_titles'
-          snippet_titles.page(page).per(per_page).records
+          snippet_titles_count.to_s
         when 'snippet_blobs'
-          snippet_blobs.page(page).per(per_page).records
+          snippet_blobs_count.to_s
         else
           super
         end
       end
 
+      def snippet_titles_count
+        limited_snippet_titles_count
+      end
+
+      def snippet_blobs_count
+        limited_snippet_blobs_count
+      end
+
       private
 
       def snippet_titles
-        opt = {
-          user: @user
-        }
-
-        Snippet.elastic_search(query, options: opt)
+        Snippet.elastic_search(query, options: search_params)
       end
 
       def snippet_blobs
-        opt = {
-          user: @user
-        }
+        Snippet.elastic_search_code(query, options: search_params)
+      end
+
+      def limited_snippet_titles_count
+        @limited_snippet_titles_count ||= snippet_titles.total_count
+      end
+
+      def limited_snippet_blobs_count
+        @limited_snippet_blobs_count ||= snippet_blobs.total_count
+      end
+
+      def paginated_objects(relation, page)
+        super.records
+      end
 
-        Snippet.elastic_search_code(query, options: opt)
+      def search_params
+        { user: current_user }
       end
     end
   end

lib/gitlab/snippet_search_results.rb

@@ -4,19 +4,19 @@ module Gitlab
   class SnippetSearchResults < SearchResults
     include SnippetsHelper
 
-    attr_reader :limit_snippets
+    attr_reader :current_user
 
-    def initialize(limit_snippets, query)
-      @limit_snippets = limit_snippets
+    def initialize(current_user, query)
+      @current_user = current_user
       @query = query
     end
 
     def objects(scope, page = nil)
       case scope
       when 'snippet_titles'
-        snippet_titles.page(page).per(per_page)
+        paginated_objects(snippet_titles, page)
       when 'snippet_blobs'
-        snippet_blobs.page(page).per(per_page)
+        paginated_objects(snippet_blobs, page)
       else
         super(scope, nil, false)
       end
@@ -25,38 +25,47 @@ module Gitlab
     def formatted_count(scope)
       case scope
       when 'snippet_titles'
-        snippet_titles_count.to_s
+        formatted_limited_count(limited_snippet_titles_count)
       when 'snippet_blobs'
-        snippet_blobs_count.to_s
+        formatted_limited_count(limited_snippet_blobs_count)
       else
         super
       end
     end
 
-    def snippet_titles_count
-      @snippet_titles_count ||= snippet_titles.count
+    def limited_snippet_titles_count
+      @limited_snippet_titles_count ||= limited_count(snippet_titles)
     end
 
-    def snippet_blobs_count
-      @snippet_blobs_count ||= snippet_blobs.count
+    def limited_snippet_blobs_count
+      @limited_snippet_blobs_count ||= limited_count(snippet_blobs)
     end
 
     private
 
     # rubocop: disable CodeReuse/ActiveRecord
-    def snippet_titles
-      limit_snippets.search(query).order('updated_at DESC').includes(:author)
+    def snippets
+      SnippetsFinder.new(current_user)
+        .execute
+        .includes(:author)
+        .reorder(updated_at: :desc)
     end
     # rubocop: enable CodeReuse/ActiveRecord
 
-    # rubocop: disable CodeReuse/ActiveRecord
+    def snippet_titles
+      snippets.search(query)
+    end
+
     def snippet_blobs
-      limit_snippets.search_code(query).order('updated_at DESC').includes(:author)
+      snippets.search_code(query)
     end
-    # rubocop: enable CodeReuse/ActiveRecord
 
     def default_scope
       'snippet_blobs'
     end
+
+    def paginated_objects(relation, page)
+      relation.page(page).per(per_page)
+    end
   end
 end

spec/lib/gitlab/snippet_search_results_spec.rb

@@ -6,18 +6,17 @@ describe Gitlab::SnippetSearchResults do
   include SearchHelpers
 
   let!(:snippet) { create(:snippet, content: 'foo', file_name: 'foo') }
-
-  let(:results) { described_class.new(Snippet.all, 'foo') }
+  let(:results) { described_class.new(snippet.author, 'foo') }
 
   describe '#snippet_titles_count' do
     it 'returns the amount of matched snippet titles' do
-      expect(results.snippet_titles_count).to eq(1)
+      expect(results.limited_snippet_titles_count).to eq(1)
     end
   end
 
   describe '#snippet_blobs_count' do
     it 'returns the amount of matched snippet blobs' do
-      expect(results.snippet_blobs_count).to eq(1)
+      expect(results.limited_snippet_blobs_count).to eq(1)
     end
   end
 
@@ -25,8 +24,8 @@ describe Gitlab::SnippetSearchResults do
     using RSpec::Parameterized::TableSyntax
 
     where(:scope, :count_method, :expected) do
-      'snippet_titles' | :snippet_titles_count   | '1234'
-      'snippet_blobs'  | :snippet_blobs_count    | '1234'
+      'snippet_titles' | :limited_snippet_titles_count   | max_limited_count
+      'snippet_blobs'  | :limited_snippet_blobs_count    | max_limited_count
       'projects'       | :limited_projects_count         | max_limited_count
       'unknown'        | nil                             | nil
     end