Revert "Merge branch 'sh-optimize-projects-api' into 'master'"

This reverts merge request !26481

app/finders/projects_finder.rb

@@ -81,7 +81,7 @@ class ProjectsFinder < UnionFinder
       if private_only?
         current_user.authorized_projects
       else
-        Project.public_or_visible_to_user(current_user, params[:visibility_level])
+        Project.public_or_visible_to_user(current_user)
       end
     end
   end

app/models/project.rb

@@ -459,41 +459,14 @@ class Project < ApplicationRecord
 
   # Returns a collection of projects that is either public or visible to the
   # logged in user.
-  #
-  # requested_visiblity_levels: Normally all projects that are visible
-  # to the user (e.g. internal and public) are queried, but this
-  # parameter allows the caller to narrow the search space to optimize
-  # database queries. For instance, a caller may only want to see
-  # internal projects. Instead of querying for internal and public
-  # projects and throwing away public projects, this parameter allows
-  # the query to be targeted for only internal projects.
-  def self.public_or_visible_to_user(user = nil, requested_visibility_levels = [])
-    return public_to_user unless user
-
-    visible_levels = Gitlab::VisibilityLevel.levels_for_user(user)
-    include_private = true
-    requested_visibility_levels = Array(requested_visibility_levels)
-
-    if requested_visibility_levels.present?
-      visible_levels &= requested_visibility_levels
-      include_private = requested_visibility_levels.include?(Gitlab::VisibilityLevel::PRIVATE)
-    end
-
-    public_or_internal_rel =
-      if visible_levels.present?
-        where('projects.visibility_level IN (?)', visible_levels)
-      else
-        Project.none
-      end
-
-    private_rel =
-      if include_private
-        where('EXISTS (?)', user.authorizations_for_projects)
-      else
-        Project.none
-      end
-
-    public_or_internal_rel.or(private_rel)
+  def self.public_or_visible_to_user(user = nil)
+    if user
+      where('EXISTS (?) OR projects.visibility_level IN (?)',
+            user.authorizations_for_projects,
+            Gitlab::VisibilityLevel.levels_for_user(user))
+    else
+      public_to_user
+    end
   end
 
   # project features may be "disabled", "internal", "enabled" or "public". If "internal",

changelogs/unreleased/sh-optimize-projects-api.yml

----
-title: Optimize /api/v4/projects endpoint for visibility level
-merge_request: 26481
-author:
-type: performance

spec/models/project_spec.rb

@@ -2722,7 +2722,7 @@ describe Project do
   end
 
   describe '#any_lfs_file_locks?', :request_store do
-    let!(:project) { create(:project) }
+    set(:project) { create(:project) }
 
     it 'returns false when there are no LFS file locks' do
       expect(project.any_lfs_file_locks?).to be_falsey
@@ -3160,53 +3160,6 @@ describe Project do
         expect(projects).to eq([public_project])
       end
     end
-
-    context 'with requested visibility levels' do
-      set(:internal_project) { create(:project, :internal, :repository) }
-      set(:private_project_2) { create(:project, :private) }
-
-      context 'with admin user' do
-        set(:admin) { create(:admin) }
-
-        it 'returns all projects' do
-          projects = described_class.all.public_or_visible_to_user(admin, [])
-
-          expect(projects).to match_array([public_project, private_project, private_project_2, internal_project])
-        end
-
-        it 'returns all public and private projects' do
-          projects = described_class.all.public_or_visible_to_user(admin, [Gitlab::VisibilityLevel::PUBLIC, Gitlab::VisibilityLevel::PRIVATE])
-
-          expect(projects).to match_array([public_project, private_project, private_project_2])
-        end
-
-        it 'returns all private projects' do
-          projects = described_class.all.public_or_visible_to_user(admin, [Gitlab::VisibilityLevel::PRIVATE])
-
-          expect(projects).to match_array([private_project, private_project_2])
-        end
-      end
-
-      context 'with regular user' do
-        it 'returns authorized projects' do
-          projects = described_class.all.public_or_visible_to_user(user, [])
-
-          expect(projects).to match_array([public_project, private_project, internal_project])
-        end
-
-        it "returns user's public and private projects" do
-          projects = described_class.all.public_or_visible_to_user(user, [Gitlab::VisibilityLevel::PUBLIC, Gitlab::VisibilityLevel::PRIVATE])
-
-          expect(projects).to match_array([public_project, private_project])
-        end
-
-        it 'returns one private project' do
-          projects = described_class.all.public_or_visible_to_user(user, [Gitlab::VisibilityLevel::PRIVATE])
-
-          expect(projects).to eq([private_project])
-        end
-      end
-    end
   end
 
   describe '.with_feature_available_for_user' do