Remove Kubernetes service from deployment platform

This will no longer be used for deployments, as all
service templates have been migrated to clusters.

app/models/concerns/deployment_platform.rb

@@ -14,9 +14,7 @@ module DeploymentPlatform
   def find_deployment_platform(environment)
     find_cluster_platform_kubernetes(environment: environment) ||
       find_group_cluster_platform_kubernetes_with_feature_guard(environment: environment) ||
-      find_instance_cluster_platform_kubernetes_with_feature_guard(environment: environment) ||
-      find_kubernetes_service_integration ||
-      build_cluster_and_deployment_platform
+      find_instance_cluster_platform_kubernetes_with_feature_guard(environment: environment)
   end
 
   # EE would override this and utilize environment argument
@@ -48,39 +46,4 @@ module DeploymentPlatform
     Clusters::Instance.new.clusters.enabled.default_environment
       .first&.platform_kubernetes
   end
-
-  def find_kubernetes_service_integration
-    services.deployment.reorder(nil).find_by(active: true)
-  end
-
-  def build_cluster_and_deployment_platform
-    return unless kubernetes_service_template
-
-    cluster = ::Clusters::Cluster.create(cluster_attributes_from_service_template)
-    cluster.platform_kubernetes if cluster.persisted?
-  end
-
-  def kubernetes_service_template
-    @kubernetes_service_template ||= KubernetesService.active.find_by_template
-  end
-
-  def cluster_attributes_from_service_template
-    {
-      name: 'kubernetes-template',
-      projects: [self],
-      cluster_type: :project_type,
-      provider_type: :user,
-      platform_type: :kubernetes,
-      platform_kubernetes_attributes: platform_kubernetes_attributes_from_service_template
-    }
-  end
-
-  def platform_kubernetes_attributes_from_service_template
-    {
-      api_url: kubernetes_service_template.api_url,
-      ca_pem: kubernetes_service_template.ca_pem,
-      token: kubernetes_service_template.token,
-      namespace: kubernetes_service_template.namespace
-    }
-  end
 end

changelogs/unreleased/remove-kubernetes-service-deployment-platform.yml

+---
+title: Remove Kubernetes service template from available deployment platforms
+merge_request: 29786
+author:
+type: removed

spec/models/concerns/deployment_platform_spec.rb

@@ -8,40 +8,7 @@ describe DeploymentPlatform do
   describe '#deployment_platform' do
     subject { project.deployment_platform }
 
-    context 'with no Kubernetes configuration on CI/CD, no Kubernetes Service and a Kubernetes template configured' do
-      let!(:kubernetes_service) { create(:kubernetes_service, template: true) }
-
-      it 'returns a platform kubernetes' do
-        expect(subject).to be_a_kind_of(Clusters::Platforms::Kubernetes)
-      end
-
-      it 'creates a cluster and a platform kubernetes' do
-        expect { subject }
-          .to change { Clusters::Cluster.count }.by(1)
-          .and change { Clusters::Platforms::Kubernetes.count }.by(1)
-      end
-
-      it 'includes appropriate attributes for Cluster' do
-        cluster = subject.cluster
-        expect(cluster.name).to eq('kubernetes-template')
-        expect(cluster.project).to eq(project)
-        expect(cluster.provider_type).to eq('user')
-        expect(cluster.platform_type).to eq('kubernetes')
-      end
-
-      it 'creates a platform kubernetes' do
-        expect { subject }.to change { Clusters::Platforms::Kubernetes.count }.by(1)
-      end
-
-      it 'copies attributes from Clusters::Platform::Kubernetes template into the new Cluster::Platforms::Kubernetes' do
-        expect(subject.api_url).to eq(kubernetes_service.api_url)
-        expect(subject.ca_pem).to eq(kubernetes_service.ca_pem)
-        expect(subject.token).to eq(kubernetes_service.token)
-        expect(subject.namespace).to eq(kubernetes_service.namespace)
-      end
-    end
-
-    context 'with no Kubernetes configuration on CI/CD, no Kubernetes Service and no Kubernetes template configured' do
+    context 'with no Kubernetes configuration on CI/CD, no Kubernetes Service' do
       it { is_expected.to be_nil }
     end
 
@@ -126,23 +93,5 @@ describe DeploymentPlatform do
         end
       end
     end
-
-    context 'when user configured kubernetes integration from project services' do
-      let!(:kubernetes_service) { create(:kubernetes_service, project: project) }
-
-      it 'returns the Kubernetes service' do
-        expect(subject).to eq(kubernetes_service)
-      end
-    end
-
-    context 'when the cluster creation fails' do
-      let!(:kubernetes_service) { create(:kubernetes_service, template: true) }
-
-      before do
-        allow_any_instance_of(Clusters::Cluster).to receive(:persisted?).and_return(false)
-      end
-
-      it { is_expected.to be_nil }
-    end
   end
 end

spec/models/project_services/kubernetes_service_spec.rb

@@ -7,7 +7,7 @@ describe KubernetesService, :use_clean_rails_memory_store_caching do
   include ReactiveCachingHelpers
 
   let(:project) { create(:kubernetes_project) }
-  let(:service) { project.deployment_platform }
+  let(:service) { create(:kubernetes_service, project: project) }
 
   describe 'Associations' do
     it { is_expected.to belong_to :project }