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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 helm specs', :clusters_applications_prometheus
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::GetCommand' do
expect(prometheus.upgrade_command(values)).to be_an_instance_of(::Gitlab::Kubernetes::Helm::UpgradeCommand)
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
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