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require 'spec_helper'
describe Gitlab::Kubernetes::Helm::Api do
let(:client) { double('kubernetes client') }
let(:helm) { described_class.new(client) }
let(:gitlab_namespace) { Gitlab::Kubernetes::Helm::NAMESPACE }
let(:namespace) { Gitlab::Kubernetes::Namespace.new(gitlab_namespace, client) }
let(:application_name) { 'app-name' }
let(:rbac) { false }
let(:files) { {} }
let(:command) do
Gitlab::Kubernetes::Helm::InstallCommand.new(
name: application_name,
chart: 'chart-name',
rbac: rbac,
files: files
)
end
subject { helm }
before do
allow(Gitlab::Kubernetes::Namespace).to receive(:new).with(gitlab_namespace, client).and_return(namespace)
allow(client).to receive(:create_config_map)
end
describe '#initialize' do
it 'creates a namespace object' do
expect(Gitlab::Kubernetes::Namespace).to receive(:new).with(gitlab_namespace, client)
subject
end
end
describe '#install' do
before do
allow(client).to receive(:create_pod).and_return(nil)
allow(client).to receive(:create_config_map).and_return(nil)
allow(client).to receive(:create_service_account).and_return(nil)
allow(client).to receive(:create_cluster_role_binding).and_return(nil)
allow(namespace).to receive(:ensure_exists!).once
end
it 'ensures the namespace exists before creating the POD' do
expect(namespace).to receive(:ensure_exists!).once.ordered
expect(client).to receive(:create_pod).once.ordered
subject.install(command)
end
context 'with a ConfigMap' do
let(:resource) { Gitlab::Kubernetes::ConfigMap.new(application_name, files).generate }
it 'creates a ConfigMap on kubeclient' do
expect(client).to receive(:create_config_map).with(resource).once
subject.install(command)
end
end
context 'without a service account' do
it 'does not create a service account on kubeclient' do
expect(client).not_to receive(:create_service_account)
expect(client).not_to receive(:create_cluster_role_binding)
subject.install(command)
end
end
context 'with a service account' do
let(:command) { Gitlab::Kubernetes::Helm::InitCommand.new(name: application_name, files: files, rbac: rbac) }
context 'rbac-enabled cluster' do
let(:rbac) { true }
let(:service_account_resource) do
Kubeclient::Resource.new(metadata: { name: 'tiller', namespace: 'gitlab-managed-apps' })
end
let(:cluster_role_binding_resource) do
Kubeclient::Resource.new(
metadata: { name: 'tiller-admin' },
roleRef: { apiGroup: 'rbac.authorization.k8s.io', kind: 'ClusterRole', name: 'cluster-admin' },
subjects: [{ kind: 'ServiceAccount', name: 'tiller', namespace: 'gitlab-managed-apps' }]
)
end
context 'service account and cluster role binding does not exist' do
before do
expect(client).to receive('get_service_account').with('tiller', 'gitlab-managed-apps').and_raise(Kubeclient::HttpError.new(404, 'Not found', nil))
expect(client).to receive('get_cluster_role_binding').with('tiller-admin').and_raise(Kubeclient::HttpError.new(404, 'Not found', nil))
end
it 'creates a service account, followed the cluster role binding on kubeclient' do
expect(client).to receive(:create_service_account).with(service_account_resource).once.ordered
expect(client).to receive(:create_cluster_role_binding).with(cluster_role_binding_resource).once.ordered
subject.install(command)
end
end
context 'service account already exists' do
before do
expect(client).to receive('get_service_account').with('tiller', 'gitlab-managed-apps').and_return(service_account_resource)
expect(client).to receive('get_cluster_role_binding').with('tiller-admin').and_raise(Kubeclient::HttpError.new(404, 'Not found', nil))
end
it 'updates the service account, followed by creating the cluster role binding' do
expect(client).to receive(:update_service_account).with(service_account_resource).once.ordered
expect(client).to receive(:create_cluster_role_binding).with(cluster_role_binding_resource).once.ordered
subject.install(command)
end
end
context 'service account and cluster role binding already exists' do
before do
expect(client).to receive('get_service_account').with('tiller', 'gitlab-managed-apps').and_return(service_account_resource)
expect(client).to receive('get_cluster_role_binding').with('tiller-admin').and_return(cluster_role_binding_resource)
end
it 'updates the service account, followed by creating the cluster role binding' do
expect(client).to receive(:update_service_account).with(service_account_resource).once.ordered
expect(client).to receive(:update_cluster_role_binding).with(cluster_role_binding_resource).once.ordered
subject.install(command)
end
end
context 'a non-404 error is thrown' do
before do
expect(client).to receive('get_service_account').with('tiller', 'gitlab-managed-apps').and_raise(Kubeclient::HttpError.new(401, 'Unauthorized', nil))
end
it 'raises an error' do
expect { subject.install(command) }.to raise_error(Kubeclient::HttpError)
end
end
end
context 'legacy abac cluster' do
it 'does not create a service account on kubeclient' do
expect(client).not_to receive(:create_service_account)
expect(client).not_to receive(:create_cluster_role_binding)
subject.install(command)
end
end
end
end
describe '#status' do
let(:phase) { Gitlab::Kubernetes::Pod::RUNNING }
let(:pod) { Kubeclient::Resource.new(status: { phase: phase }) } # partial representation
it 'fetches POD phase from kubernetes cluster' do
expect(client).to receive(:get_pod).with(command.pod_name, gitlab_namespace).once.and_return(pod)
expect(subject.status(command.pod_name)).to eq(phase)
end
end
describe '#log' do
let(:log) { 'some output' }
let(:response) { RestClient::Response.new(log) }
it 'fetches POD phase from kubernetes cluster' do
expect(client).to receive(:get_pod_log).with(command.pod_name, gitlab_namespace).once.and_return(response)
expect(subject.log(command.pod_name)).to eq(log)
end
end
describe '#delete_pod!' do
it 'deletes the POD from kubernetes cluster' do
expect(client).to receive(:delete_pod).with(command.pod_name, gitlab_namespace).once
subject.delete_pod!(command.pod_name)
end
end
end
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