85 lines
2.5 KiB
Ruby
85 lines
2.5 KiB
Ruby
# frozen_string_literal: true
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require 'fast_spec_helper'
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RSpec.describe Gitlab::Metrics::BootTimeTracker do
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let(:logger) { double('logger') }
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let(:gauge) { double('gauge') }
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subject(:tracker) { described_class.instance }
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before do
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described_class.instance.reset!
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allow(logger).to receive(:info)
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allow(gauge).to receive(:set)
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allow(Gitlab::Metrics).to receive(:gauge).and_return(gauge)
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end
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describe '#track_boot_time!' do
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described_class::SUPPORTED_RUNTIMES.each do |runtime|
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context "when called on #{runtime} for the first time" do
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before do
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expect(Gitlab::Runtime).to receive(:safe_identify).and_return(runtime)
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end
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it 'set the startup_time' do
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tracker.track_boot_time!(logger: logger)
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expect(tracker.startup_time).to be > 0
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end
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it 'records the current process runtime' do
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expect(Gitlab::Metrics::System).to receive(:process_runtime_elapsed_seconds).once
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tracker.track_boot_time!(logger: logger)
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end
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it 'logs the application boot time' do
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expect(Gitlab::Metrics::System).to receive(:process_runtime_elapsed_seconds).and_return(42)
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expect(logger).to receive(:info).with(message: 'Application boot finished', runtime: runtime.to_s, duration_s: 42)
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tracker.track_boot_time!(logger: logger)
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end
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it 'tracks boot time in a prometheus gauge' do
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expect(Gitlab::Metrics::System).to receive(:process_runtime_elapsed_seconds).and_return(42)
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expect(gauge).to receive(:set).with({}, 42)
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tracker.track_boot_time!(logger: logger)
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end
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context 'on subsequent calls' do
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it 'does nothing' do
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tracker.track_boot_time!(logger: logger)
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expect(Gitlab::Metrics::System).not_to receive(:process_runtime_elapsed_seconds)
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expect(logger).not_to receive(:info)
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expect(gauge).not_to receive(:set)
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tracker.track_boot_time!(logger: logger)
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end
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end
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end
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end
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context 'when called on other runtimes' do
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it 'does nothing' do
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tracker.track_boot_time!(logger: logger)
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expect(Gitlab::Metrics::System).not_to receive(:process_runtime_elapsed_seconds)
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expect(logger).not_to receive(:info)
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expect(gauge).not_to receive(:set)
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tracker.track_boot_time!(logger: logger)
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end
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end
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end
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describe '#startup_time' do
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it 'returns 0 when boot time not tracked' do
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expect(tracker.startup_time).to eq(0)
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end
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end
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end
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