Revert namespace renames

lib/gitlab/database/rename_reserved_paths_migration/v1/rename_namespaces.rb

@@ -28,6 +28,10 @@ module Gitlab
 
             track_rename('namespace', old_full_path, new_full_path)
 
+            rename_namespace_dependencies(namespace, old_full_path, new_full_path)
+          end
+
+          def rename_namespace_dependencies(namespace, old_full_path, new_full_path)
             move_repositories(namespace, old_full_path, new_full_path)
             move_uploads(old_full_path, new_full_path)
             move_pages(old_full_path, new_full_path)
@@ -35,6 +39,23 @@ module Gitlab
             remove_cached_html_for_projects(projects_for_namespace(namespace).map(&:id))
           end
 
+          def revert_renames
+            reverts_for_type('namespace') do |path_before_rename, current_path|
+              matches_path = MigrationClasses::Route.arel_table[:path].matches(current_path)
+              namespace = MigrationClasses::Namespace.joins(:route)
+                            .where(matches_path).first.becomes(MigrationClasses::Namespace)
+
+              if namespace
+                perform_rename(namespace, current_path, path_before_rename)
+
+                rename_namespace_dependencies(namespace, current_path, path_before_rename)
+              else
+                say "Couldn't rename namespace##{namespace.id} from #{current_path} "\
+                    " back to #{path_before_rename}, namespace no longer exists"
+              end
+            end
+          end
+
           def rename_user(old_username, new_username)
             MigrationClasses::User.where(username: old_username)
               .update_all(username: new_username)

lib/gitlab/database/rename_reserved_paths_migration/v1/rename_projects.rb

@@ -38,7 +38,8 @@ module Gitlab
 
                 move_project_folders(project, current_path, path_before_rename)
               else
-                say "Couldn't rename project##{project.id} from #{current_path} back to #{path_before_rename}, project no longer exists"
+                say "Couldn't rename project##{project.id} from #{current_path} "\
+                    "back to #{path_before_rename}, project no longer exists"
               end
             end
           end

spec/lib/gitlab/database/rename_reserved_paths_migration/v1/rename_base_spec.rb

@@ -6,6 +6,7 @@ describe Gitlab::Database::RenameReservedPathsMigration::V1::RenameBase, :trunca
 
   before do
     allow(migration).to receive(:say)
+    TestEnv.clean_test_path
   end
 
   def migration_namespace(namespace)

spec/lib/gitlab/database/rename_reserved_paths_migration/v1/rename_namespaces_spec.rb

@@ -3,9 +3,11 @@ require 'spec_helper'
 describe Gitlab::Database::RenameReservedPathsMigration::V1::RenameNamespaces, :truncate do
   let(:migration) { FakeRenameReservedPathMigrationV1.new }
   let(:subject) { described_class.new(['the-path'], migration) }
+  let(:namespace) { create(:group, name: 'the-path') }
 
   before do
     allow(migration).to receive(:say)
+    TestEnv.clean_test_path
   end
 
   def migration_namespace(namespace)
@@ -137,8 +139,6 @@ describe Gitlab::Database::RenameReservedPathsMigration::V1::RenameNamespaces, :
   end
 
   describe "#rename_namespace" do
-    let(:namespace) { create(:group, name: 'the-path') }
-
     it 'renames paths & routes for the namespace' do
       expect(subject).to receive(:rename_path_for_routable)
                            .with(namespace)
@@ -149,11 +149,27 @@ describe Gitlab::Database::RenameReservedPathsMigration::V1::RenameNamespaces, :
       expect(namespace.reload.path).to eq('the-path0')
     end
 
+    it 'tracks the rename' do
+      expect(subject).to receive(:track_rename)
+                           .with('namespace', 'the-path', 'the-path0')
+
+      subject.rename_namespace(namespace)
+    end
+
+    it 'renames things related to the namespace' do
+      expect(subject).to receive(:rename_namespace_dependencies)
+                           .with(namespace, 'the-path', 'the-path0')
+
+      subject.rename_namespace(namespace)
+    end
+  end
+
+  describe '#rename_namespace_dependencies' do
     it "moves the the repository for a project in the namespace" do
       create(:project, namespace: namespace, path: "the-path-project")
       expected_repo = File.join(TestEnv.repos_path, "the-path0", "the-path-project.git")
 
-      subject.rename_namespace(namespace)
+      subject.rename_namespace_dependencies(namespace, 'the-path', 'the-path0')
 
       expect(File.directory?(expected_repo)).to be(true)
     end
@@ -161,13 +177,13 @@ describe Gitlab::Database::RenameReservedPathsMigration::V1::RenameNamespaces, :
     it "moves the uploads for the namespace" do
       expect(subject).to receive(:move_uploads).with("the-path", "the-path0")
 
-      subject.rename_namespace(namespace)
+      subject.rename_namespace_dependencies(namespace, 'the-path', 'the-path0')
     end
 
     it "moves the pages for the namespace" do
       expect(subject).to receive(:move_pages).with("the-path", "the-path0")
 
-      subject.rename_namespace(namespace)
+      subject.rename_namespace_dependencies(namespace, 'the-path', 'the-path0')
     end
 
     it 'invalidates the markdown cache of related projects' do
@@ -175,13 +191,13 @@ describe Gitlab::Database::RenameReservedPathsMigration::V1::RenameNamespaces, :
 
       expect(subject).to receive(:remove_cached_html_for_projects).with([project.id])
 
-      subject.rename_namespace(namespace)
+      subject.rename_namespace_dependencies(namespace, 'the-path', 'the-path0')
     end
 
     it "doesn't rename users for other namespaces" do
       expect(subject).not_to receive(:rename_user)
 
-      subject.rename_namespace(namespace)
+      subject.rename_namespace_dependencies(namespace, 'the-path', 'the-path0')
     end
 
     it 'renames the username of a namespace for a user' do
@@ -189,14 +205,7 @@ describe Gitlab::Database::RenameReservedPathsMigration::V1::RenameNamespaces, :
 
       expect(subject).to receive(:rename_user).with('the-path', 'the-path0')
 
-      subject.rename_namespace(user.namespace)
-    end
-
-    it 'tracks the rename' do
-      expect(subject).to receive(:track_rename)
-                           .with('namespace', 'the-path', 'the-path0')
-
-      subject.rename_namespace(namespace)
+      subject.rename_namespace_dependencies(user.namespace, 'the-path', 'the-path0')
     end
   end
 
@@ -231,4 +240,43 @@ describe Gitlab::Database::RenameReservedPathsMigration::V1::RenameNamespaces, :
       subject.rename_namespaces(type: :child)
     end
   end
+
+  describe '#revert_renames', redis: true do
+    it 'renames the routes back to the previous values' do
+      project = create(:project, path: 'a-project', namespace: namespace)
+      subject.rename_namespace(namespace)
+
+      expect(subject).to receive(:perform_rename)
+                           .with(
+                             kind_of(Gitlab::Database::RenameReservedPathsMigration::V1::MigrationClasses::Namespace),
+                             'the-path0',
+                             'the-path'
+                           ).and_call_original
+
+      subject.revert_renames
+
+      expect(namespace.reload.path).to eq('the-path')
+      expect(namespace.reload.route.path).to eq('the-path')
+      expect(project.reload.route.path).to eq('the-path/a-project')
+    end
+
+    it 'moves the repositories back to their original place' do
+      project = create(:project, path: 'a-project', namespace: namespace)
+      project.create_repository
+      subject.rename_namespace(namespace)
+
+      expected_path = File.join(TestEnv.repos_path, 'the-path', 'a-project.git')
+
+      expect(subject).to receive(:rename_namespace_dependencies)
+                           .with(
+                             kind_of(Gitlab::Database::RenameReservedPathsMigration::V1::MigrationClasses::Namespace),
+                             'the-path0',
+                             'the-path'
+                           ).and_call_original
+
+      subject.revert_renames
+
+      expect(File.directory?(expected_path)).to be_truthy
+    end
+  end
 end

spec/lib/gitlab/database/rename_reserved_paths_migration/v1/rename_projects_spec.rb

@@ -9,9 +9,9 @@ describe Gitlab::Database::RenameReservedPathsMigration::V1::RenameProjects, :tr
            namespace: create(:namespace, path: 'known-parent' ))
   end
 
-
   before do
     allow(migration).to receive(:say)
+    TestEnv.clean_test_path
   end
 
   describe '#projects_for_paths' do