Refactor SiteStatistics to extract refresh logic into a rake task

app/models/site_statistic.rb

@@ -73,18 +73,4 @@ class SiteStatistic < ActiveRecord::Base
 
     super
   end
-
-  def self.recalculate_counters!
-    transaction do
-      # see https://gitlab.com/gitlab-org/gitlab-ce/issues/48967
-      ActiveRecord::Base.connection.execute('SET LOCAL statement_timeout TO 0') if Gitlab::Database.postgresql?
-      self.update_all('repositories_count = (SELECT COUNT(*) FROM projects)')
-    end
-
-    transaction do
-      # see https://gitlab.com/gitlab-org/gitlab-ce/issues/48967
-      ActiveRecord::Base.connection.execute('SET LOCAL statement_timeout TO 0') if Gitlab::Database.postgresql?
-      self.update_all('wikis_count = (SELECT COUNT(*) FROM project_features WHERE wiki_access_level != 0)')
-    end
-  end
 end

lib/tasks/gitlab/site_statistics.rake

+namespace :gitlab do
+  desc "GitLab | Refresh Site Statistics counters"
+  task refresh_site_statistics: :environment do
+    puts 'Updating Site Statistics counters: '
+
+    print '* Repositories... '
+    SiteStatistic.transaction do
+      # see https://gitlab.com/gitlab-org/gitlab-ce/issues/48967
+      ActiveRecord::Base.connection.execute('SET LOCAL statement_timeout TO 0') if Gitlab::Database.postgresql?
+      SiteStatistic.update_all('repositories_count = (SELECT COUNT(*) FROM projects)')
+    end
+    puts 'OK!'.color(:green)
+
+    print '* Wikis... '
+    SiteStatistic.transaction do
+      # see https://gitlab.com/gitlab-org/gitlab-ce/issues/48967
+      ActiveRecord::Base.connection.execute('SET LOCAL statement_timeout TO 0') if Gitlab::Database.postgresql?
+      SiteStatistic.update_all('wikis_count = (SELECT COUNT(*) FROM project_features WHERE wiki_access_level != 0)')
+    end
+    puts 'OK!'.color(:green)
+    puts
+  end
+end

spec/models/site_statistic_spec.rb

@@ -80,16 +80,4 @@ describe SiteStatistic do
       end
     end
   end
-
-  describe '.recalculate_counters!' do
-    it 'recalculates existing counters' do
-      create(:project)
-      described_class.fetch.update(repositories_count: 0, wikis_count: 0)
-
-      described_class.recalculate_counters!
-
-      expect(described_class.fetch.repositories_count).to eq(1)
-      expect(described_class.fetch.wikis_count).to eq(1)
-    end
-  end
 end

spec/tasks/gitlab/site_statistics_rake_spec.rb

+# frozen_string_literal: true
+require 'rake_helper'
+
+describe 'rake gitlab:refresh_site_statistics' do
+  before do
+    Rake.application.rake_require 'tasks/gitlab/site_statistics'
+
+    create(:project)
+    SiteStatistic.fetch.update(repositories_count: 0, wikis_count: 0)
+  end
+
+  let(:task) { 'gitlab:refresh_site_statistics' }
+
+  it 'recalculates existing counters' do
+    run_rake_task(task)
+
+    expect(SiteStatistic.fetch.repositories_count).to eq(1)
+    expect(SiteStatistic.fetch.wikis_count).to eq(1)
+  end
+
+  it 'displays message listing counters' do
+    expect { run_rake_task(task) }.to output(/Updating Site Statistics counters:.* Repositories\.\.\. OK!.* Wikis\.\.\. OK!/m).to_stdout
+  end
+end