112 lines
3.2 KiB
Ruby
112 lines
3.2 KiB
Ruby
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# frozen_string_literal: true
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require 'spec_helper'
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RSpec.describe Gitlab::Metrics::Subscribers::LoadBalancing, :request_store do
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let(:subscriber) { described_class.new }
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describe '#caught_up_replica_pick' do
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shared_examples 'having payload result value' do |result, counter_name|
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subject { subscriber.caught_up_replica_pick(event) }
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let(:payload) { { result: result } }
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let(:event) do
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double(
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:event,
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name: 'load_balancing.caught_up_replica_pick',
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payload: payload
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)
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end
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it 'stores per-request caught up replica search result' do
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subject
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expect(Gitlab::SafeRequestStore[counter_name]).to eq(1)
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end
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end
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it_behaves_like 'having payload result value', true, :caught_up_replica_pick_ok
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it_behaves_like 'having payload result value', false, :caught_up_replica_pick_fail
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end
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describe "#web_transaction_completed" do
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subject { subscriber.web_transaction_completed(event) }
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let(:event) do
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double(
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:event,
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name: 'load_balancing.web_transaction_completed',
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payload: {}
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)
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end
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let(:web_transaction) { double('Gitlab::Metrics::WebTransaction') }
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before do
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allow(::Gitlab::Metrics::WebTransaction).to receive(:current)
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.and_return(web_transaction)
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end
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context 'when no data in request store' do
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before do
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Gitlab::SafeRequestStore[:caught_up_replica_pick] = nil
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end
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it 'does not change the counters' do
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expect(web_transaction).not_to receive(:increment)
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end
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end
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context 'when request store was updated' do
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before do
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Gitlab::SafeRequestStore[:caught_up_replica_pick_ok] = 2
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Gitlab::SafeRequestStore[:caught_up_replica_pick_fail] = 1
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end
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it 'increments :caught_up_replica_pick count with proper label' do
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expect(web_transaction).to receive(:increment).with(:gitlab_transaction_caught_up_replica_pick_count_total, 2, { result: true })
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expect(web_transaction).to receive(:increment).with(:gitlab_transaction_caught_up_replica_pick_count_total, 1, { result: false })
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subject
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end
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end
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end
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describe '.load_balancing_payload' do
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subject { described_class.load_balancing_payload }
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context 'when no data in request store' do
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before do
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Gitlab::SafeRequestStore[:caught_up_replica_pick_ok] = nil
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Gitlab::SafeRequestStore[:caught_up_replica_pick_fail] = nil
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end
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it 'returns empty hash' do
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expect(subject).to eq({})
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end
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end
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context 'when request store was updated for a single counter' do
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before do
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Gitlab::SafeRequestStore[:caught_up_replica_pick_ok] = 2
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end
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it 'returns proper payload with only that counter' do
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expect(subject).to eq({ caught_up_replica_pick_ok: 2 })
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end
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end
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context 'when both counters were updated' do
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before do
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Gitlab::SafeRequestStore[:caught_up_replica_pick_ok] = 2
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Gitlab::SafeRequestStore[:caught_up_replica_pick_fail] = 1
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end
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it 'return proper payload' do
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expect(subject).to eq({ caught_up_replica_pick_ok: 2, caught_up_replica_pick_fail: 1 })
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end
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end
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end
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end
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