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RSpec.shared_examples 'additional metrics query' do
include Prometheus::MetricBuilders
let(:metric_group_class) { Gitlab::Prometheus::MetricGroup }
let(:metric_class) { Gitlab::Prometheus::Metric }
let(:metric_names) { %w{metric_a metric_b} }
let(:query_range_result) do
[{ 'metric': {}, 'values': [[1488758662.506, '0.00002996364761904785'], [1488758722.506, '0.00003090239047619091']] }]
end
let(:client) { double('prometheus_client') }
let(:query_result) { described_class.new(client).query(*query_params) }
let(:environment) { create(:environment, slug: 'environment-slug') }
before do
allow(client).to receive(:label_values).and_return(metric_names)
allow(metric_group_class).to receive(:all).and_return([simple_metric_group(metrics: [simple_metric])])
end
context 'metrics query context' do
subject! { described_class.new(client) }
shared_examples 'query context containing environment slug and filter' do
it 'query context contains ci_environment_slug' do
expect(subject).to receive(:query_metrics).with(hash_including(ci_environment_slug: environment.slug))
subject.query(*query_params)
end
it 'query context contains environment filter' do
expect(subject).to receive(:query_metrics).with(
hash_including(
environment_filter: "container_name!=\"POD\",environment=\"#{environment.slug}\""
)
)
subject.query(*query_params)
end
end
describe 'project has Kubernetes service' do
let(:project) { create(:kubernetes_project) }
let(:environment) { create(:environment, slug: 'environment-slug', project: project) }
let(:kube_namespace) { project.kubernetes_service.actual_namespace }
it_behaves_like 'query context containing environment slug and filter'
it 'query context contains kube_namespace' do
expect(subject).to receive(:query_metrics).with(hash_including(kube_namespace: kube_namespace))
subject.query(*query_params)
end
end
describe 'project without Kubernetes service' do
it_behaves_like 'query context containing environment slug and filter'
it 'query context contains empty kube_namespace' do
expect(subject).to receive(:query_metrics).with(hash_including(kube_namespace: ''))
subject.query(*query_params)
end
end
end
context 'with one group where two metrics is found' do
before do
allow(metric_group_class).to receive(:all).and_return([simple_metric_group])
end
context 'some queries return results' do
before do
allow(client).to receive(:query_range).with('query_range_a', any_args).and_return(query_range_result)
allow(client).to receive(:query_range).with('query_range_b', any_args).and_return(query_range_result)
allow(client).to receive(:query_range).with('query_range_empty', any_args).and_return([])
end
it 'return group data only for queries with results' do
expected = [
{
group: 'name',
priority: 1,
metrics: [
{
title: 'title', weight: 1, y_label: 'Values', queries: [
{ query_range: 'query_range_a', result: query_range_result },
{ query_range: 'query_range_b', label: 'label', unit: 'unit', result: query_range_result }
]
}
]
}
]
expect(query_result).to match_schema('prometheus/additional_metrics_query_result')
expect(query_result).to eq(expected)
end
end
end
context 'with two groups with one metric each' do
let(:metrics) { [simple_metric(queries: [simple_query])] }
before do
allow(metric_group_class).to receive(:all).and_return(
[
simple_metric_group(name: 'group_a', metrics: [simple_metric(queries: [simple_query])]),
simple_metric_group(name: 'group_b', metrics: [simple_metric(title: 'title_b', queries: [simple_query('b')])])
])
allow(client).to receive(:label_values).and_return(metric_names)
end
context 'both queries return results' do
before do
allow(client).to receive(:query_range).with('query_range_a', any_args).and_return(query_range_result)
allow(client).to receive(:query_range).with('query_range_b', any_args).and_return(query_range_result)
end
it 'return group data both queries' do
queries_with_result_a = { queries: [{ query_range: 'query_range_a', result: query_range_result }] }
queries_with_result_b = { queries: [{ query_range: 'query_range_b', result: query_range_result }] }
expect(query_result).to match_schema('prometheus/additional_metrics_query_result')
expect(query_result.count).to eq(2)
expect(query_result).to all(satisfy { |r| r[:metrics].count == 1 })
expect(query_result[0][:metrics].first).to include(queries_with_result_a)
expect(query_result[1][:metrics].first).to include(queries_with_result_b)
end
end
context 'one query returns result' do
before do
allow(client).to receive(:query_range).with('query_range_a', any_args).and_return(query_range_result)
allow(client).to receive(:query_range).with('query_range_b', any_args).and_return([])
end
it 'return group data only for query with results' do
queries_with_result = { queries: [{ query_range: 'query_range_a', result: query_range_result }] }
expect(query_result).to match_schema('prometheus/additional_metrics_query_result')
expect(query_result.count).to eq(1)
expect(query_result).to all(satisfy { |r| r[:metrics].count == 1 })
expect(query_result.first[:metrics].first).to include(queries_with_result)
end
end
end
end
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