Remove unused Clusters::RefreshService

Also removes all logic from ClusterConfigureWorker
and ClusterProjectConfigureWorker, which are also
no longer used.

app/services/clusters/refresh_service.rb

-# frozen_string_literal: true
-
-module Clusters
-  class RefreshService
-    def self.create_or_update_namespaces_for_cluster(cluster)
-      projects_with_missing_kubernetes_namespaces_for_cluster(cluster).each do |project|
-        create_or_update_namespace(cluster, project)
-      end
-    end
-
-    def self.create_or_update_namespaces_for_project(project)
-      clusters_with_missing_kubernetes_namespaces_for_project(project).each do |cluster|
-        create_or_update_namespace(cluster, project)
-      end
-    end
-
-    def self.projects_with_missing_kubernetes_namespaces_for_cluster(cluster)
-      cluster.all_projects.missing_kubernetes_namespace(cluster.kubernetes_namespaces)
-    end
-
-    private_class_method :projects_with_missing_kubernetes_namespaces_for_cluster
-
-    def self.clusters_with_missing_kubernetes_namespaces_for_project(project)
-      project.clusters.managed.missing_kubernetes_namespace(project.kubernetes_namespaces)
-    end
-
-    private_class_method :clusters_with_missing_kubernetes_namespaces_for_project
-
-    def self.create_or_update_namespace(cluster, project)
-      kubernetes_namespace = cluster.find_or_initialize_kubernetes_namespace_for_project(project)
-
-      ::Clusters::Gcp::Kubernetes::CreateOrUpdateNamespaceService.new(
-        cluster: cluster,
-        kubernetes_namespace: kubernetes_namespace
-      ).execute
-    end
-
-    private_class_method :create_or_update_namespace
-  end
-end

app/workers/cluster_configure_worker.rb

@@ -5,10 +5,6 @@ class ClusterConfigureWorker
   include ClusterQueue
 
   def perform(cluster_id)
-    Clusters::Cluster.managed.find_by_id(cluster_id).try do |cluster|
-      if cluster.project_type?
-        Clusters::RefreshService.create_or_update_namespaces_for_cluster(cluster)
-      end
-    end
+    # Scheduled for removal in https://gitlab.com/gitlab-org/gitlab-ce/issues/59319
   end
 end

app/workers/cluster_project_configure_worker.rb

@@ -5,8 +5,6 @@ class ClusterProjectConfigureWorker
   include ClusterQueue
 
   def perform(project_id)
-    project = Project.find(project_id)
-
-    ::Clusters::RefreshService.create_or_update_namespaces_for_project(project)
+    # Scheduled for removal in https://gitlab.com/gitlab-org/gitlab-ce/issues/59319
   end
 end

spec/services/clusters/refresh_service_spec.rb

-# frozen_string_literal: true
-
-require 'spec_helper'
-
-describe Clusters::RefreshService do
-  shared_examples 'creates a kubernetes namespace' do
-    let(:token) { 'aaaaaa' }
-    let(:service_account_creator) { double(Clusters::Gcp::Kubernetes::CreateOrUpdateServiceAccountService, execute: true) }
-    let(:secrets_fetcher) { double(Clusters::Gcp::Kubernetes::FetchKubernetesTokenService, execute: token) }
-
-    it 'creates a kubernetes namespace' do
-      expect(Clusters::Gcp::Kubernetes::CreateOrUpdateServiceAccountService).to receive(:namespace_creator).and_return(service_account_creator)
-      expect(Clusters::Gcp::Kubernetes::FetchKubernetesTokenService).to receive(:new).and_return(secrets_fetcher)
-
-      expect { subject }.to change(project.kubernetes_namespaces, :count)
-
-      kubernetes_namespace = cluster.kubernetes_namespaces.first
-      expect(kubernetes_namespace).to be_present
-      expect(kubernetes_namespace.project).to eq(project)
-    end
-  end
-
-  shared_examples 'does not create a kubernetes namespace' do
-    it 'does not create a new kubernetes namespace' do
-      expect(Clusters::Gcp::Kubernetes::CreateOrUpdateServiceAccountService).not_to receive(:namespace_creator)
-      expect(Clusters::Gcp::Kubernetes::FetchKubernetesTokenService).not_to receive(:new)
-
-      expect { subject }.not_to change(Clusters::KubernetesNamespace, :count)
-    end
-  end
-
-  describe '.create_or_update_namespaces_for_cluster' do
-    let(:cluster) { create(:cluster, :provided_by_user, :project) }
-    let(:project) { cluster.project }
-
-    subject { described_class.create_or_update_namespaces_for_cluster(cluster) }
-
-    context 'cluster is project level' do
-      include_examples 'creates a kubernetes namespace'
-
-      context 'when project already has kubernetes namespace' do
-        before do
-          create(:cluster_kubernetes_namespace, project: project, cluster: cluster)
-        end
-
-        include_examples 'does not create a kubernetes namespace'
-      end
-    end
-
-    context 'cluster is group level' do
-      let(:cluster) { create(:cluster, :provided_by_user, :group) }
-      let(:group) { cluster.group }
-      let(:project) { create(:project, group: group) }
-
-      include_examples 'creates a kubernetes namespace'
-
-      context 'when project already has kubernetes namespace' do
-        before do
-          create(:cluster_kubernetes_namespace, project: project, cluster: cluster)
-        end
-
-        include_examples 'does not create a kubernetes namespace'
-      end
-    end
-  end
-
-  describe '.create_or_update_namespaces_for_project' do
-    let(:project) { create(:project) }
-
-    subject { described_class.create_or_update_namespaces_for_project(project) }
-
-    it 'creates no kubernetes namespaces' do
-      expect { subject }.not_to change(project.kubernetes_namespaces, :count)
-    end
-
-    context 'project has a project cluster' do
-      let!(:cluster) { create(:cluster, :provided_by_gcp, cluster_type: :project_type, projects: [project]) }
-
-      include_examples 'creates a kubernetes namespace'
-
-      context 'when project already has kubernetes namespace' do
-        before do
-          create(:cluster_kubernetes_namespace, project: project, cluster: cluster)
-        end
-
-        include_examples 'does not create a kubernetes namespace'
-      end
-    end
-
-    context 'project belongs to a group cluster' do
-      let!(:cluster) { create(:cluster, :provided_by_gcp, :group) }
-
-      let(:group) { cluster.group }
-      let(:project) { create(:project, group: group) }
-
-      include_examples 'does not create a kubernetes namespace'
-
-      context 'when project already has kubernetes namespace' do
-        before do
-          create(:cluster_kubernetes_namespace, project: project, cluster: cluster)
-        end
-
-        include_examples 'does not create a kubernetes namespace'
-      end
-    end
-
-    context 'cluster is not managed' do
-      let!(:cluster) { create(:cluster, :project, :not_managed, projects: [project]) }
-
-      include_examples 'does not create a kubernetes namespace'
-    end
-  end
-end

spec/workers/cluster_configure_worker_spec.rb

-# frozen_string_literal: true
-
-require 'spec_helper'
-
-describe ClusterConfigureWorker, '#perform' do
-  let(:worker) { described_class.new }
-
-  shared_examples 'configured cluster' do
-    it 'creates a namespace' do
-      expect(Clusters::RefreshService).to receive(:create_or_update_namespaces_for_cluster).with(cluster).once
-
-      worker.perform(cluster.id)
-    end
-  end
-
-  shared_examples 'unconfigured cluster' do
-    it 'does not create a namespace' do
-      expect(Clusters::RefreshService).not_to receive(:create_or_update_namespaces_for_cluster)
-
-      worker.perform(cluster.id)
-    end
-  end
-
-  context 'group cluster' do
-    let(:cluster) { create(:cluster, :group, :provided_by_gcp) }
-    let(:group) { cluster.group }
-
-    context 'when group has a project' do
-      let!(:project) { create(:project, group: group) }
-
-      it_behaves_like 'unconfigured cluster'
-    end
-
-    context 'when group has project in a sub-group' do
-      let!(:subgroup) { create(:group, parent: group) }
-      let!(:project) { create(:project, group: subgroup) }
-
-      it_behaves_like 'unconfigured cluster'
-    end
-  end
-
-  context 'when provider type is gcp' do
-    let!(:cluster) { create(:cluster, :project, :provided_by_gcp) }
-
-    it_behaves_like 'configured cluster'
-  end
-
-  context 'when provider type is user' do
-    let!(:cluster) { create(:cluster, :project, :provided_by_user) }
-
-    it_behaves_like 'configured cluster'
-  end
-
-  context 'when cluster is not managed' do
-    let(:cluster) { create(:cluster, :not_managed) }
-
-    it 'does not configure the cluster' do
-      expect(Clusters::RefreshService).not_to receive(:create_or_update_namespaces_for_cluster)
-
-      described_class.new.perform(cluster.id)
-    end
-  end
-
-  context 'when cluster does not exist' do
-    it 'does not provision a cluster' do
-      expect_any_instance_of(Clusters::Gcp::Kubernetes::CreateOrUpdateNamespaceService).not_to receive(:execute)
-
-      described_class.new.perform(123)
-    end
-  end
-end

spec/workers/cluster_project_configure_worker_spec.rb

-# frozen_string_literal: true
-
-require 'spec_helper'
-
-describe ClusterProjectConfigureWorker, '#perform' do
-  let(:worker) { described_class.new }
-  let(:cluster) { create(:cluster, :project) }
-
-  it 'configures the cluster' do
-    expect(Clusters::RefreshService).to receive(:create_or_update_namespaces_for_project)
-
-    described_class.new.perform(cluster.projects.first.id)
-  end
-end