Show storage_size on project page

app/presenters/project_presenter.rb

@@ -25,6 +25,7 @@ class ProjectPresenter < Gitlab::View::Presenter::Delegated
       branches_anchor_data,
       tags_anchor_data,
       files_anchor_data,
+      storage_anchor_data,
       releases_anchor_data
     ].compact.select(&:is_link)
   end
@@ -154,6 +155,17 @@ class ProjectPresenter < Gitlab::View::Presenter::Delegated
                    empty_repo? ? nil : project_tree_path(project))
   end
 
+  def storage_anchor_data
+    AnchorData.new(true,
+                   statistic_icon('disk') +
+                   _('%{strong_start}%{human_size}%{strong_end} Storage').html_safe % {
+                     human_size: storage_counter(statistics.storage_size),
+                     strong_start: '<strong class="project-stat-value">'.html_safe,
+                     strong_end: '</strong>'.html_safe
+                   },
+                   empty_repo? ? nil : project_tree_path(project))
+  end
+
   def releases_anchor_data
     return unless can?(current_user, :read_release, project)
 

changelogs/unreleased/feat-show-storage.yml

+---
+title: Show storage size on project page
+merge_request: 27724
+author: Roger Meier
+type: added

locale/gitlab.pot

@@ -459,6 +459,9 @@ msgstr[1] ""
 msgid "%{strong_start}%{human_size}%{strong_end} Files"
 msgstr ""
 
+msgid "%{strong_start}%{human_size}%{strong_end} Storage"
+msgstr ""
+
 msgid "%{strong_start}%{release_count}%{strong_end} Release"
 msgid_plural "%{strong_start}%{release_count}%{strong_end} Releases"
 msgstr[0] ""

spec/presenters/project_presenter_spec.rb

@@ -179,6 +179,16 @@ describe ProjectPresenter do
       end
     end
 
+    describe '#storage_anchor_data' do
+      it 'returns storage data' do
+        expect(presenter.storage_anchor_data).to have_attributes(
+          is_link: true,
+          label:  a_string_including('0 Bytes'),
+          link: nil
+        )
+      end
+    end
+
     describe '#releases_anchor_data' do
       it 'does not return release count' do
         expect(presenter.releases_anchor_data).to be_nil
@@ -232,6 +242,16 @@ describe ProjectPresenter do
       end
     end
 
+    describe '#storage_anchor_data' do
+      it 'returns storage data' do
+        expect(presenter.storage_anchor_data).to have_attributes(
+          is_link: true,
+          label:  a_string_including('0 Bytes'),
+          link: presenter.project_tree_path(project)
+        )
+      end
+    end
+
     describe '#releases_anchor_data' do
       it 'returns release count if user can read release' do
         project.add_maintainer(user)