Make Housekeeping button do a full garbage collection

Previously the Housekeeping button and API would use the counter of last
pushes to determine whether to do a full garbage collection, or whether
to do one of the less comprehensive tasks: a full repack, incremental
pack, or ref pack. This was confusing behavior, since a project owner
might have to click the button dozens of times before a full GC would be
initiated.

This commit forces a full GC each time this is initiated. Note that the
`ExclusiveLease` in `HousekeepingService` prevents users from clicking
on the button more than once a day.

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/63349

app/controllers/projects_controller.rb

@@ -182,7 +182,7 @@ class ProjectsController < Projects::ApplicationController
   end
 
   def housekeeping
-    ::Projects::HousekeepingService.new(@project).execute
+    ::Projects::HousekeepingService.new(@project, :gc).execute
 
     redirect_to(
       project_path(@project),

changelogs/unreleased/sh-fix-issue-63349.yml

+---
+title: Make Housekeeping button do a full garbage collection
+merge_request: 30289
+author:
+type: fixed

lib/api/projects.rb

@@ -474,7 +474,7 @@ module API
         authorize_admin_project
 
         begin
-          ::Projects::HousekeepingService.new(user_project).execute
+          ::Projects::HousekeepingService.new(user_project, :gc).execute
         rescue ::Projects::HousekeepingService::LeaseTaken => error
           conflict!(error.message)
         end

spec/controllers/projects_controller_spec.rb

@@ -318,6 +318,53 @@ describe ProjectsController do
     end
   end
 
+  describe '#housekeeping' do
+    let(:group) { create(:group) }
+    let(:project) { create(:project, group: group) }
+    let(:housekeeping) { Projects::HousekeepingService.new(project) }
+
+    context 'when authenticated as owner' do
+      before do
+        group.add_owner(user)
+        sign_in(user)
+
+        allow(Projects::HousekeepingService).to receive(:new).with(project, :gc).and_return(housekeeping)
+      end
+
+      it 'forces a full garbage collection' do
+        expect(housekeeping).to receive(:execute).once
+
+        post :housekeeping,
+             params: {
+               namespace_id: project.namespace.path,
+               id: project.path
+             }
+
+        expect(response).to have_gitlab_http_status(302)
+      end
+    end
+
+    context 'when authenticated as developer' do
+      let(:developer) { create(:user) }
+
+      before do
+        group.add_developer(developer)
+      end
+
+      it 'does not execute housekeeping' do
+        expect(housekeeping).not_to receive(:execute)
+
+        post :housekeeping,
+             params: {
+               namespace_id: project.namespace.path,
+               id: project.path
+             }
+
+        expect(response).to have_gitlab_http_status(302)
+      end
+    end
+  end
+
   describe "#update" do
     render_views
 

spec/requests/api/projects_spec.rb

@@ -2428,7 +2428,7 @@ describe API::Projects do
     let(:housekeeping) { Projects::HousekeepingService.new(project) }
 
     before do
-      allow(Projects::HousekeepingService).to receive(:new).with(project).and_return(housekeeping)
+      allow(Projects::HousekeepingService).to receive(:new).with(project, :gc).and_return(housekeeping)
     end
 
     context 'when authenticated as owner' do