125 lines
3.2 KiB
Ruby
125 lines
3.2 KiB
Ruby
# frozen_string_literal: true
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require 'spec_helper'
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RSpec.describe Gitlab::Metrics::Samplers::PumaSampler do
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subject { described_class.new }
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let(:null_metric) { double('null_metric', set: nil, observe: nil) }
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before do
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allow(Gitlab::Metrics::NullMetric).to receive(:instance).and_return(null_metric)
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end
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it_behaves_like 'metrics sampler', 'PUMA_SAMPLER'
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describe '#sample' do
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before do
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expect(subject).to receive(:puma_stats).and_return(puma_stats)
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end
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context 'in cluster mode' do
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let(:puma_stats) do
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<<~EOS
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{
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"workers": 2,
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"phase": 2,
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"booted_workers": 2,
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"old_workers": 0,
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"worker_status": [{
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"pid": 32534,
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"index": 0,
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"phase": 1,
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"booted": true,
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"last_checkin": "2019-05-15T07:57:55Z",
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"last_status": {
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"backlog":0,
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"running":1,
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"pool_capacity":4,
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"max_threads": 4
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}
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}]
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}
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EOS
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end
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it 'samples master statistics' do
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labels = { worker: 'master' }
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expect(subject.metrics[:puma_workers]).to receive(:set).with(labels, 2)
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expect(subject.metrics[:puma_running_workers]).to receive(:set).with(labels, 2)
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expect(subject.metrics[:puma_stale_workers]).to receive(:set).with(labels, 0)
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subject.sample
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end
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it 'samples worker statistics' do
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labels = { worker: 'worker_0' }
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expect_worker_stats(labels)
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subject.sample
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end
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end
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context 'with empty worker stats' do
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let(:puma_stats) do
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<<~EOS
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{
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"workers": 2,
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"phase": 2,
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"booted_workers": 2,
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"old_workers": 0,
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"worker_status": [{
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"pid": 32534,
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"index": 0,
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"phase": 1,
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"booted": true,
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"last_checkin": "2019-05-15T07:57:55Z",
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"last_status": {}
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}]
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}
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EOS
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end
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it 'does not log worker stats' do
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expect(subject).not_to receive(:set_worker_metrics)
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subject.sample
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end
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end
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context 'in single mode' do
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let(:puma_stats) do
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<<~EOS
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{
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"backlog":0,
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"running":1,
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"pool_capacity":4,
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"max_threads": 4
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}
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EOS
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end
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it 'samples worker statistics' do
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labels = {}
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expect(subject.metrics[:puma_workers]).to receive(:set).with(labels, 1)
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expect(subject.metrics[:puma_running_workers]).to receive(:set).with(labels, 1)
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expect_worker_stats(labels)
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subject.sample
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end
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end
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end
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def expect_worker_stats(labels)
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expect(subject.metrics[:puma_queued_connections]).to receive(:set).with(labels, 0)
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expect(subject.metrics[:puma_active_connections]).to receive(:set).with(labels, 0)
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expect(subject.metrics[:puma_running]).to receive(:set).with(labels, 1)
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expect(subject.metrics[:puma_pool_capacity]).to receive(:set).with(labels, 4)
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expect(subject.metrics[:puma_max_threads]).to receive(:set).with(labels, 4)
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expect(subject.metrics[:puma_idle_threads]).to receive(:set).with(labels, 1)
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end
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end
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