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require 'spec_helper'
describe KubernetesService, models: true, caching: true do
include KubernetesHelpers
include ReactiveCachingHelpers
let(:project) { create(:kubernetes_project) }
let(:service) { project.kubernetes_service }
# We use Kubeclient to interactive with the Kubernetes API. It will
# GET /api/v1 for a list of resources the API supports. This must be stubbed
# in addition to any other HTTP requests we expect it to perform.
let(:discovery_url) { service.api_url + '/api/v1' }
let(:discovery_response) { { body: kube_discovery_body.to_json } }
let(:pods_url) { service.api_url + "/api/v1/namespaces/#{service.namespace}/pods" }
let(:pods_response) { { body: kube_pods_body(kube_pod).to_json } }
def stub_kubeclient_discover
WebMock.stub_request(:get, discovery_url).to_return(discovery_response)
end
def stub_kubeclient_pods
stub_kubeclient_discover
WebMock.stub_request(:get, pods_url).to_return(pods_response)
end
describe "Associations" do
it { is_expected.to belong_to :project }
end
describe 'Validations' do
context 'when service is active' do
before { subject.active = true }
it { is_expected.to validate_presence_of(:namespace) }
it { is_expected.to validate_presence_of(:api_url) }
it { is_expected.to validate_presence_of(:token) }
context 'namespace format' do
before do
subject.project = project
subject.api_url = "http://example.com"
subject.token = "test"
end
{
'foo' => true,
'1foo' => true,
'foo1' => true,
'foo-bar' => true,
'-foo' => false,
'foo-' => false,
'a' * 63 => true,
'a' * 64 => false,
'a.b' => false,
'a*b' => false,
}.each do |namespace, validity|
it "should validate #{namespace} as #{validity ? 'valid' : 'invalid'}" do
subject.namespace = namespace
expect(subject.valid?).to eq(validity)
end
end
end
end
context 'when service is inactive' do
before { subject.active = false }
it { is_expected.not_to validate_presence_of(:namespace) }
it { is_expected.not_to validate_presence_of(:api_url) }
it { is_expected.not_to validate_presence_of(:token) }
end
end
describe '#initialize_properties' do
context 'with a project' do
it 'defaults to the project name' do
expect(described_class.new(project: project).namespace).to eq(project.name)
end
end
context 'without a project' do
it 'leaves the namespace unset' do
expect(described_class.new.namespace).to be_nil
end
end
end
describe '#test' do
before do
stub_kubeclient_discover
end
context 'with path prefix in api_url' do
let(:discovery_url) { 'https://kubernetes.example.com/prefix/api/v1' }
it 'tests with the prefix' do
service.api_url = 'https://kubernetes.example.com/prefix/'
expect(service.test[:success]).to be_truthy
expect(WebMock).to have_requested(:get, discovery_url).once
end
end
context 'with custom CA certificate' do
it 'is added to the certificate store' do
service.ca_pem = "CA PEM DATA"
cert = double("certificate")
expect(OpenSSL::X509::Certificate).to receive(:new).with(service.ca_pem).and_return(cert)
expect_any_instance_of(OpenSSL::X509::Store).to receive(:add_cert).with(cert)
expect(service.test[:success]).to be_truthy
expect(WebMock).to have_requested(:get, discovery_url).once
end
end
context 'success' do
it 'reads the discovery endpoint' do
expect(service.test[:success]).to be_truthy
expect(WebMock).to have_requested(:get, discovery_url).once
end
end
context 'failure' do
let(:discovery_response) { { status: 404 } }
it 'fails to read the discovery endpoint' do
expect(service.test[:success]).to be_falsy
expect(WebMock).to have_requested(:get, discovery_url).once
end
end
end
describe '#predefined_variables' do
before do
subject.api_url = 'https://kube.domain.com'
subject.token = 'token'
subject.namespace = 'my-project'
subject.ca_pem = 'CA PEM DATA'
end
it 'sets KUBE_URL' do
expect(subject.predefined_variables).to include(
{ key: 'KUBE_URL', value: 'https://kube.domain.com', public: true }
)
end
it 'sets KUBE_TOKEN' do
expect(subject.predefined_variables).to include(
{ key: 'KUBE_TOKEN', value: 'token', public: false }
)
end
it 'sets KUBE_NAMESPACE' do
expect(subject.predefined_variables).to include(
{ key: 'KUBE_NAMESPACE', value: 'my-project', public: true }
)
end
it 'sets KUBE_CA_PEM' do
expect(subject.predefined_variables).to include(
{ key: 'KUBE_CA_PEM', value: 'CA PEM DATA', public: true }
)
end
it 'sets KUBE_CA_PEM_FILE' do
expect(subject.predefined_variables).to include(
{ key: 'KUBE_CA_PEM_FILE', value: 'CA PEM DATA', public: true, file: true }
)
end
end
describe '#terminals' do
let(:environment) { build(:environment, project: project, name: "env", slug: "env-000000") }
subject { service.terminals(environment) }
context 'with invalid pods' do
it 'returns no terminals' do
stub_reactive_cache(service, pods: [{ "bad" => "pod" }])
is_expected.to be_empty
end
end
context 'with valid pods' do
let(:pod) { kube_pod(app: environment.slug) }
let(:terminals) { kube_terminals(service, pod) }
before do
stub_reactive_cache(
service,
pods: [pod, pod, kube_pod(app: "should-be-filtered-out")]
)
end
it 'returns terminals' do
is_expected.to eq(terminals + terminals)
end
it 'uses max session time from settings' do
stub_application_setting(terminal_max_session_time: 600)
times = subject.map { |terminal| terminal[:max_session_time] }
expect(times).to eq [600, 600, 600, 600]
end
end
end
describe '#calculate_reactive_cache' do
before { stub_kubeclient_pods }
subject { service.calculate_reactive_cache }
context 'when service is inactive' do
before { service.active = false }
it { is_expected.to be_nil }
end
context 'when kubernetes responds with valid pods' do
it { is_expected.to eq(pods: [kube_pod]) }
end
context 'when kubernetes responds with 500' do
let(:pods_response) { { status: 500 } }
it { expect { subject }.to raise_error(KubeException) }
end
context 'when kubernetes responds with 404' do
let(:pods_response) { { status: 404 } }
it { is_expected.to eq(pods: []) }
end
end
end
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