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# frozen_string_literal: true
# Input
# - factory: [:clusters_applications_prometheus, :clusters_integrations_prometheus]
RSpec.shared_examples '#prometheus_client shared' do
shared_examples 'exception caught for prometheus client' do
before do
allow(kube_client).to receive(:proxy_url).and_raise(exception)
end
it 'returns nil' do
expect(subject.prometheus_client).to be_nil
end
end
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(factory, 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(factory, 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_client' do
expect(subject.prometheus_client).to be_instance_of(Gitlab::PrometheusClient)
end
it 'merges proxy_url, options and headers from kube client with prometheus_client options' do
expect(Gitlab::PrometheusClient)
.to(receive(:new))
.with(a_valid_url, kube_client.rest_client.options.merge({
headers: kube_client.headers,
timeout: PrometheusAdapter::DEFAULT_PROMETHEUS_REQUEST_TIMEOUT_SEC
}))
subject.prometheus_client
end
context 'when cluster is not reachable' do
it_behaves_like 'exception caught for prometheus client' do
let(:exception) { Kubeclient::HttpError.new(401, 'Unauthorized', nil) }
end
end
context 'when there is a socket error while contacting cluster' do
it_behaves_like 'exception caught for prometheus client' do
let(:exception) { Errno::ECONNREFUSED }
end
it_behaves_like 'exception caught for prometheus client' do
let(:exception) { Errno::ECONNRESET }
end
end
context 'when the network is unreachable' do
it_behaves_like 'exception caught for prometheus client' do
let(:exception) { Errno::ENETUNREACH }
end
end
end
end
|
