Custom queries for prometheus

- Tests for prometheus queries

- fix rubocop warnings

- Remove unused method. Add more queries to deployment queries.

- Wrap BaseQuery in module hierarchy

Renname Prometheus class to PrometheusClient

1 files changed, 31 insertions, 0 deletions

diff --git a/spec/lib/gitlab/prometheus/queries/deployment_query_spec.rb b/spec/lib/gitlab/prometheus/queries/deployment_query_spec.rb
new file mode 100644
index 00000000000..c69cd180547
--- /dev/null
+++ b/spec/lib/gitlab/prometheus/queries/deployment_query_spec.rb
@@ -0,0 +1,31 @@
+require 'spec_helper'
+
+describe Gitlab::Prometheus::Queries::DeploymentQuery, lib: true do
+  let(:environment) { create(:environment) }
+  let(:deployment) { create(:deployment, environment: environment) }
+
+  let(:client) { double('prometheus_client') }
+  subject { described_class.new(client) }
+
+  it 'sends appropriate queries to prometheus' do
+    start_time = (deployment.created_at - 30.minutes).to_f
+
+    stop_time = (deployment.created_at + 30.minutes).to_f
+    expect(client).to receive(:query_range).with('avg(container_memory_usage_bytes{container_name!="POD",environment="environment1"}) / 2^20',
+                                                 start: start_time, stop: stop_time)
+    expect(client).to receive(:query).with('avg(avg_over_time(container_memory_usage_bytes{container_name!="POD",environment="environment1"}[30m]))',
+                                           time: deployment.created_at.to_f)
+    expect(client).to receive(:query).with('avg(avg_over_time(container_memory_usage_bytes{container_name!="POD",environment="environment1"}[30m]))',
+                                           time: stop_time)
+
+    expect(client).to receive(:query_range).with('avg(rate(container_cpu_usage_seconds_total{container_name!="POD",environment="environment1"}[2m])) * 100',
+                                                 start: start_time, stop: stop_time)
+    expect(client).to receive(:query).with('avg(rate(container_cpu_usage_seconds_total{container_name!="POD",environment="environment1"}[30m])) * 100',
+                                           time: deployment.created_at.to_f)
+    expect(client).to receive(:query).with('avg(rate(container_cpu_usage_seconds_total{container_name!="POD",environment="environment1"}[30m])) * 100',
+                                           time: stop_time)
+
+    expect(subject.query(deployment.id)).to eq(memory_values: nil, memory_before: nil, memory_after: nil,
+                                               cpu_values: nil, cpu_before: nil, cpu_after: nil)
+  end
+end