343 lines
11 KiB
Ruby
343 lines
11 KiB
Ruby
# frozen_string_literal: true
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require 'spec_helper'
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describe Clusters::Applications::Prometheus do
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include KubernetesHelpers
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include StubRequests
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include_examples 'cluster application core specs', :clusters_applications_prometheus
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include_examples 'cluster application status specs', :clusters_applications_prometheus
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include_examples 'cluster application version specs', :clusters_applications_prometheus
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include_examples 'cluster application helm specs', :clusters_applications_prometheus
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include_examples 'cluster application initial status specs'
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describe 'after_destroy' do
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context 'cluster type is project' do
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let(:cluster) { create(:cluster, :with_installed_helm) }
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let(:application) { create(:clusters_applications_prometheus, :installed, cluster: cluster) }
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it 'deactivates prometheus_service after destroy' do
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expect(Clusters::Applications::DeactivateServiceWorker)
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.to receive(:perform_async).with(cluster.id, 'prometheus')
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application.destroy!
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end
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end
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end
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describe 'transition to installed' do
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let(:project) { create(:project) }
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let(:cluster) { create(:cluster, :with_installed_helm) }
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let(:application) { create(:clusters_applications_prometheus, :installing, cluster: cluster) }
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it 'schedules post installation job' do
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expect(Clusters::Applications::ActivateServiceWorker)
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.to receive(:perform_async).with(cluster.id, 'prometheus')
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application.make_installed
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end
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end
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describe '#can_uninstall?' do
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let(:prometheus) { create(:clusters_applications_prometheus) }
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subject { prometheus.can_uninstall? }
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it { is_expected.to be_truthy }
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end
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describe '#prometheus_client' do
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shared_examples 'exception caught for prometheus client' do
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before do
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allow(kube_client).to receive(:proxy_url).and_raise(exception)
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end
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it 'returns nil' do
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expect(subject.prometheus_client).to be_nil
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end
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end
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context 'cluster is nil' do
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it 'returns nil' do
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expect(subject.cluster).to be_nil
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expect(subject.prometheus_client).to be_nil
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end
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end
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context "cluster doesn't have kubeclient" do
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let(:cluster) { create(:cluster) }
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subject { create(:clusters_applications_prometheus, cluster: cluster) }
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it 'returns nil' do
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expect(subject.prometheus_client).to be_nil
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end
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end
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context 'cluster has kubeclient' do
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let(:cluster) { create(:cluster, :project, :provided_by_gcp) }
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let(:kubernetes_url) { subject.cluster.platform_kubernetes.api_url }
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let(:kube_client) { subject.cluster.kubeclient.core_client }
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subject { create(:clusters_applications_prometheus, cluster: cluster) }
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before do
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subject.cluster.platform_kubernetes.namespace = 'a-namespace'
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stub_kubeclient_discover(cluster.platform_kubernetes.api_url)
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create(:cluster_kubernetes_namespace,
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cluster: cluster,
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cluster_project: cluster.cluster_project,
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project: cluster.cluster_project.project)
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end
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it 'creates proxy prometheus_client' do
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expect(subject.prometheus_client).to be_instance_of(Gitlab::PrometheusClient)
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end
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it 'copies proxy_url, options and headers from kube client to prometheus_client' do
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expect(Gitlab::PrometheusClient)
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.to(receive(:new))
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.with(a_valid_url, kube_client.rest_client.options.merge(headers: kube_client.headers))
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subject.prometheus_client
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end
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context 'when cluster is not reachable' do
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it_behaves_like 'exception caught for prometheus client' do
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let(:exception) { Kubeclient::HttpError.new(401, 'Unauthorized', nil) }
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end
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end
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context 'when there is a socket error while contacting cluster' do
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it_behaves_like 'exception caught for prometheus client' do
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let(:exception) { Errno::ECONNREFUSED }
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end
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it_behaves_like 'exception caught for prometheus client' do
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let(:exception) { Errno::ECONNRESET }
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end
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end
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context 'when the network is unreachable' do
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it_behaves_like 'exception caught for prometheus client' do
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let(:exception) { Errno::ENETUNREACH }
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end
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end
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end
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end
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describe '#install_command' do
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let(:prometheus) { create(:clusters_applications_prometheus) }
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subject { prometheus.install_command }
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it { is_expected.to be_an_instance_of(Gitlab::Kubernetes::Helm::InstallCommand) }
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it 'is initialized with 3 arguments' do
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expect(subject.name).to eq('prometheus')
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expect(subject.chart).to eq('stable/prometheus')
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expect(subject.version).to eq('9.5.2')
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expect(subject).to be_rbac
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expect(subject.files).to eq(prometheus.files)
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end
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context 'on a non rbac enabled cluster' do
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before do
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prometheus.cluster.platform_kubernetes.abac!
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end
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it { is_expected.not_to be_rbac }
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end
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context 'application failed to install previously' do
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let(:prometheus) { create(:clusters_applications_prometheus, :errored, version: '2.0.0') }
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it 'is initialized with the locked version' do
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expect(subject.version).to eq('9.5.2')
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end
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end
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it 'does not install knative metrics' do
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expect(subject.postinstall).to be_empty
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end
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context 'with knative installed' do
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let(:knative) { create(:clusters_applications_knative, :updated ) }
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let(:prometheus) { create(:clusters_applications_prometheus, cluster: knative.cluster) }
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subject { prometheus.install_command }
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it 'installs knative metrics' do
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expect(subject.postinstall).to include("kubectl apply -f #{Clusters::Applications::Knative::METRICS_CONFIG}")
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end
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end
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end
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describe '#uninstall_command' do
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let(:prometheus) { create(:clusters_applications_prometheus) }
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subject { prometheus.uninstall_command }
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it { is_expected.to be_an_instance_of(Gitlab::Kubernetes::Helm::DeleteCommand) }
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it 'has the application name' do
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expect(subject.name).to eq('prometheus')
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end
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it 'has files' do
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expect(subject.files).to eq(prometheus.files)
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end
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it 'is rbac' do
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expect(subject).to be_rbac
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end
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describe '#predelete' do
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let(:knative) { create(:clusters_applications_knative, :updated ) }
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let(:prometheus) { create(:clusters_applications_prometheus, cluster: knative.cluster) }
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subject { prometheus.uninstall_command.predelete }
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it 'deletes knative metrics' do
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metrics_config = Clusters::Applications::Knative::METRICS_CONFIG
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is_expected.to include("kubectl delete -f #{metrics_config} --ignore-not-found")
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end
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end
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context 'on a non rbac enabled cluster' do
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before do
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prometheus.cluster.platform_kubernetes.abac!
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end
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it { is_expected.not_to be_rbac }
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end
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end
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describe '#patch_command' do
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subject(:patch_command) { prometheus.patch_command(values) }
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let(:prometheus) { build(:clusters_applications_prometheus) }
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let(:values) { prometheus.values }
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it { is_expected.to be_an_instance_of(::Gitlab::Kubernetes::Helm::PatchCommand) }
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it 'is initialized with 3 arguments' do
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expect(patch_command.name).to eq('prometheus')
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expect(patch_command.chart).to eq('stable/prometheus')
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expect(patch_command.version).to eq('9.5.2')
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expect(patch_command.files).to eq(prometheus.files)
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end
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end
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describe '#update_in_progress?' do
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context 'when app is updating' do
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it 'returns true' do
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cluster = create(:cluster)
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prometheus_app = build(:clusters_applications_prometheus, :updating, cluster: cluster)
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expect(prometheus_app.update_in_progress?).to be true
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end
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end
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end
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describe '#update_errored?' do
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context 'when app errored' do
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it 'returns true' do
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cluster = create(:cluster)
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prometheus_app = build(:clusters_applications_prometheus, :update_errored, cluster: cluster)
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expect(prometheus_app.update_errored?).to be true
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end
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end
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end
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describe '#files' do
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let(:application) { create(:clusters_applications_prometheus) }
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let(:values) { subject[:'values.yaml'] }
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subject { application.files }
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it 'includes prometheus valid values' do
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expect(values).to include('alertmanager')
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expect(values).to include('kubeStateMetrics')
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expect(values).to include('nodeExporter')
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expect(values).to include('pushgateway')
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expect(values).to include('serverFiles')
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end
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end
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describe '#files_with_replaced_values' do
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let(:application) { build(:clusters_applications_prometheus) }
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let(:files) { application.files }
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subject { application.files_with_replaced_values({ hello: :world }) }
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it 'does not modify #files' do
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expect(subject[:'values.yaml']).not_to eq(files)
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expect(files[:'values.yaml']).to eq(application.values)
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end
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it 'returns values.yaml with replaced values' do
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expect(subject[:'values.yaml']).to eq({ hello: :world })
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end
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it 'includes cert files' do
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expect(subject[:'ca.pem']).to be_present
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expect(subject[:'ca.pem']).to eq(application.cluster.application_helm.ca_cert)
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expect(subject[:'cert.pem']).to be_present
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expect(subject[:'key.pem']).to be_present
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cert = OpenSSL::X509::Certificate.new(subject[:'cert.pem'])
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expect(cert.not_after).to be < 60.minutes.from_now
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end
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context 'when the helm application does not have a ca_cert' do
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before do
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application.cluster.application_helm.ca_cert = nil
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end
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it 'does not include cert files' do
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expect(subject[:'ca.pem']).not_to be_present
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expect(subject[:'cert.pem']).not_to be_present
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expect(subject[:'key.pem']).not_to be_present
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end
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end
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end
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describe '#configured?' do
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let(:prometheus) { create(:clusters_applications_prometheus, :installed, cluster: cluster) }
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subject { prometheus.configured? }
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context 'when a kubenetes client is present' do
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let(:cluster) { create(:cluster, :project, :provided_by_gcp) }
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it { is_expected.to be_truthy }
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context 'when it is not availalble' do
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let(:prometheus) { create(:clusters_applications_prometheus, cluster: cluster) }
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it { is_expected.to be_falsey }
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end
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context 'when the kubernetes URL is blocked' do
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before do
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blocked_ip = '127.0.0.1' # localhost addresses are blocked by default
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stub_all_dns(cluster.platform.api_url, ip_address: blocked_ip)
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end
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it { is_expected.to be_falsey }
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end
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end
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context 'when a kubenetes client is not present' do
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let(:cluster) { create(:cluster) }
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it { is_expected.to be_falsy }
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end
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end
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end
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