require 'rails_helper' describe Clusters::Applications::Prometheus do include KubernetesHelpers include_examples 'cluster application core specs', :clusters_applications_prometheus include_examples 'cluster application status specs', :clusters_applications_prometheus include_examples 'cluster application version specs', :clusters_applications_prometheus include_examples 'cluster application helm specs', :clusters_applications_prometheus include_examples 'cluster application initial status specs' describe '.installed' do subject { described_class.installed } let!(:cluster) { create(:clusters_applications_prometheus, :installed) } before do create(:clusters_applications_prometheus, :errored) end it { is_expected.to contain_exactly(cluster) } end describe 'transition to installed' do let(:project) { create(:project) } let(:cluster) { create(:cluster, :with_installed_helm, projects: [project]) } let(:prometheus_service) { double('prometheus_service') } subject { create(:clusters_applications_prometheus, :installing, cluster: cluster) } before do allow(project).to receive(:find_or_initialize_service).with('prometheus').and_return prometheus_service end it 'ensures Prometheus service is activated' do expect(prometheus_service).to receive(:update).with(active: true) subject.make_installed end end describe '#ready' do let(:project) { create(:project) } let(:cluster) { create(:cluster, projects: [project]) } it 'returns true when installed' do application = build(:clusters_applications_prometheus, :installed, cluster: cluster) expect(application).to be_ready end it 'returns false when not_installable' do application = build(:clusters_applications_prometheus, :not_installable, cluster: cluster) expect(application).not_to be_ready end it 'returns false when installable' do application = build(:clusters_applications_prometheus, :installable, cluster: cluster) expect(application).not_to be_ready end it 'returns false when scheduled' do application = build(:clusters_applications_prometheus, :scheduled, cluster: cluster) expect(application).not_to be_ready end it 'returns false when installing' do application = build(:clusters_applications_prometheus, :installing, cluster: cluster) expect(application).not_to be_ready end it 'returns false when errored' do application = build(:clusters_applications_prometheus, :errored, cluster: cluster) expect(application).not_to be_ready end it 'returns true when updating' do application = build(:clusters_applications_prometheus, :updating, cluster: cluster) expect(application).to be_ready end it 'returns true when updated' do application = build(:clusters_applications_prometheus, :updated, cluster: cluster) expect(application).to be_ready end it 'returns true when errored' do application = build(:clusters_applications_prometheus, :update_errored, cluster: cluster) expect(application).to be_ready end end describe '#prometheus_client' do context 'cluster is nil' do it 'returns nil' do expect(subject.cluster).to be_nil expect(subject.prometheus_client).to be_nil end end context "cluster doesn't have kubeclient" do let(:cluster) { create(:cluster) } subject { create(:clusters_applications_prometheus, cluster: cluster) } it 'returns nil' do expect(subject.prometheus_client).to be_nil end end context 'cluster has kubeclient' do let(:cluster) { create(:cluster, :project, :provided_by_gcp) } let(:kubernetes_url) { subject.cluster.platform_kubernetes.api_url } let(:kube_client) { subject.cluster.kubeclient.core_client } subject { create(:clusters_applications_prometheus, cluster: cluster) } before do subject.cluster.platform_kubernetes.namespace = 'a-namespace' stub_kubeclient_discover(cluster.platform_kubernetes.api_url) create(:cluster_kubernetes_namespace, cluster: cluster, cluster_project: cluster.cluster_project, project: cluster.cluster_project.project) end it 'creates proxy prometheus rest client' do expect(subject.prometheus_client).to be_instance_of(RestClient::Resource) end it 'creates proper url' do expect(subject.prometheus_client.url).to eq("#{kubernetes_url}/api/v1/namespaces/gitlab-managed-apps/services/prometheus-prometheus-server:80/proxy") end it 'copies options and headers from kube client to proxy client' do expect(subject.prometheus_client.options).to eq(kube_client.rest_client.options.merge(headers: kube_client.headers)) end context 'when cluster is not reachable' do before do allow(kube_client).to receive(:proxy_url).and_raise(Kubeclient::HttpError.new(401, 'Unauthorized', nil)) end it 'returns nil' do expect(subject.prometheus_client).to be_nil end end end end describe '#install_command' do let(:prometheus) { create(:clusters_applications_prometheus) } subject { prometheus.install_command } it { is_expected.to be_an_instance_of(Gitlab::Kubernetes::Helm::InstallCommand) } it 'should be initialized with 3 arguments' do expect(subject.name).to eq('prometheus') expect(subject.chart).to eq('stable/prometheus') expect(subject.version).to eq('6.7.3') expect(subject).to be_rbac expect(subject.files).to eq(prometheus.files) end context 'on a non rbac enabled cluster' do before do prometheus.cluster.platform_kubernetes.abac! end it { is_expected.not_to be_rbac } end context 'application failed to install previously' do let(:prometheus) { create(:clusters_applications_prometheus, :errored, version: '2.0.0') } it 'should be initialized with the locked version' do expect(subject.version).to eq('6.7.3') end end it 'should not install knative metrics' do expect(subject.postinstall).to be_nil end context 'with knative installed' do let(:knative) { create(:clusters_applications_knative, :installed ) } let(:prometheus) { create(:clusters_applications_prometheus, cluster: knative.cluster) } subject { prometheus.install_command } it 'should install knative metrics' do expect(subject.postinstall).to include("kubectl apply -f #{Clusters::Applications::Knative::METRICS_CONFIG}") end end end describe '#upgrade_command' do let(:prometheus) { build(:clusters_applications_prometheus) } let(:values) { prometheus.values } it 'returns an instance of Gitlab::Kubernetes::Helm::InstallCommand' do expect(prometheus.upgrade_command(values)).to be_an_instance_of(::Gitlab::Kubernetes::Helm::InstallCommand) end it 'should be initialized with 3 arguments' do command = prometheus.upgrade_command(values) expect(command.name).to eq('prometheus') expect(command.chart).to eq('stable/prometheus') expect(command.version).to eq('6.7.3') expect(command.files).to eq(prometheus.files) end end describe '#update_in_progress?' do context 'when app is updating' do it 'returns true' do cluster = create(:cluster) prometheus_app = build(:clusters_applications_prometheus, :updating, cluster: cluster) expect(prometheus_app.update_in_progress?).to be true end end end describe '#update_errored?' do context 'when app errored' do it 'returns true' do cluster = create(:cluster) prometheus_app = build(:clusters_applications_prometheus, :update_errored, cluster: cluster) expect(prometheus_app.update_errored?).to be true end end end describe '#files' do let(:application) { create(:clusters_applications_prometheus) } let(:values) { subject[:'values.yaml'] } subject { application.files } it 'should include prometheus valid values' do expect(values).to include('alertmanager') expect(values).to include('kubeStateMetrics') expect(values).to include('nodeExporter') expect(values).to include('pushgateway') expect(values).to include('serverFiles') end end describe '#files_with_replaced_values' do let(:application) { build(:clusters_applications_prometheus) } let(:files) { application.files } subject { application.files_with_replaced_values({ hello: :world }) } it 'does not modify #files' do expect(subject[:'values.yaml']).not_to eq(files) expect(files[:'values.yaml']).to eq(application.values) end it 'returns values.yaml with replaced values' do expect(subject[:'values.yaml']).to eq({ hello: :world }) end it 'should include cert files' do expect(subject[:'ca.pem']).to be_present expect(subject[:'ca.pem']).to eq(application.cluster.application_helm.ca_cert) expect(subject[:'cert.pem']).to be_present expect(subject[:'key.pem']).to be_present cert = OpenSSL::X509::Certificate.new(subject[:'cert.pem']) expect(cert.not_after).to be < 60.minutes.from_now end context 'when the helm application does not have a ca_cert' do before do application.cluster.application_helm.ca_cert = nil end it 'should not include cert files' do expect(subject[:'ca.pem']).not_to be_present expect(subject[:'cert.pem']).not_to be_present expect(subject[:'key.pem']).not_to be_present end end end end