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# frozen_string_literal: true
require 'spec_helper'
RSpec.describe Gitlab::Metrics::Transaction do
let(:transaction) { described_class.new }
let(:sensitive_tags) do
{
path: 'private',
branch: 'sensitive'
}
end
describe '#duration' do
it 'returns the duration of a transaction in seconds' do
transaction.run { }
expect(transaction.duration).to be > 0
end
end
describe '#run' do
it 'yields the supplied block' do
expect { |b| transaction.run(&b) }.to yield_control
end
it 'stores the transaction in the current thread' do
transaction.run do
expect(described_class.current).to eq(transaction)
end
end
it 'removes the transaction from the current thread upon completion' do
transaction.run { }
expect(described_class.current).to be_nil
end
end
describe '#method_call_for' do
it 'returns a MethodCall' do
method = transaction.method_call_for('Foo#bar', :Foo, '#bar')
expect(method).to be_an_instance_of(Gitlab::Metrics::MethodCall)
end
end
describe '#add_event' do
let(:prometheus_metric) { instance_double(Prometheus::Client::Counter, increment: nil, base_labels: {}) }
it 'adds a metric' do
expect(prometheus_metric).to receive(:increment)
expect(described_class).to receive(:fetch_metric).with(:counter, :gitlab_transaction_event_meow_total).and_return(prometheus_metric)
transaction.add_event(:meow)
end
it 'allows tracking of custom tags' do
expect(prometheus_metric).to receive(:increment).with(hash_including(animal: "dog"))
expect(described_class).to receive(:fetch_metric).with(:counter, :gitlab_transaction_event_bau_total).and_return(prometheus_metric)
transaction.add_event(:bau, animal: 'dog')
end
context 'with sensitive tags' do
before do
transaction.add_event(:baubau, **sensitive_tags.merge(sane: 'yes'))
allow(described_class).to receive(:prometheus_metric).and_return(prometheus_metric)
end
it 'filters tags' do
expect(prometheus_metric).not_to receive(:increment).with(hash_including(sensitive_tags))
transaction.add_event(:baubau, **sensitive_tags.merge(sane: 'yes'))
end
end
end
describe '#increment' do
let(:prometheus_metric) { instance_double(Prometheus::Client::Counter, increment: nil, base_labels: {}) }
it 'adds a metric' do
expect(prometheus_metric).to receive(:increment)
expect(::Gitlab::Metrics).to receive(:counter).with(:meow, 'Meow counter', hash_including(:controller, :action)).and_return(prometheus_metric)
transaction.increment(:meow, 1)
end
context 'with block' do
it 'overrides docstring' do
expect(::Gitlab::Metrics).to receive(:counter).with(:block_docstring, 'test', hash_including(:controller, :action)).and_return(prometheus_metric)
transaction.increment(:block_docstring, 1) do
docstring 'test'
end
end
it 'overrides labels' do
expect(::Gitlab::Metrics).to receive(:counter).with(:block_labels, 'Block labels counter', hash_including(:controller, :action, :sane)).and_return(prometheus_metric)
labels = { sane: 'yes' }
transaction.increment(:block_labels, 1, labels) do
label_keys %i(sane)
end
end
it 'filters sensitive tags' do
expect(::Gitlab::Metrics).to receive(:counter).with(:metric_with_sensitive_block, 'Metric with sensitive block counter', hash_excluding(sensitive_tags)).and_return(prometheus_metric)
labels_keys = sensitive_tags.keys
transaction.increment(:metric_with_sensitive_block, 1, sensitive_tags) do
label_keys labels_keys
end
end
end
end
describe '#set' do
let(:prometheus_metric) { instance_double(Prometheus::Client::Gauge, set: nil, base_labels: {}) }
it 'adds a metric' do
expect(prometheus_metric).to receive(:set)
expect(::Gitlab::Metrics).to receive(:gauge).with(:meow_set, 'Meow set gauge', hash_including(:controller, :action), :all).and_return(prometheus_metric)
transaction.set(:meow_set, 1)
end
context 'with block' do
it 'overrides docstring' do
expect(::Gitlab::Metrics).to receive(:gauge).with(:block_docstring_set, 'test', hash_including(:controller, :action), :all).and_return(prometheus_metric)
transaction.set(:block_docstring_set, 1) do
docstring 'test'
end
end
it 'overrides labels' do
expect(::Gitlab::Metrics).to receive(:gauge).with(:block_labels_set, 'Block labels set gauge', hash_including(:controller, :action, :sane), :all).and_return(prometheus_metric)
labels = { sane: 'yes' }
transaction.set(:block_labels_set, 1, labels) do
label_keys %i(sane)
end
end
it 'filters sensitive tags' do
expect(::Gitlab::Metrics).to receive(:gauge).with(:metric_set_with_sensitive_block, 'Metric set with sensitive block gauge', hash_excluding(sensitive_tags), :all).and_return(prometheus_metric)
label_keys = sensitive_tags.keys
transaction.set(:metric_set_with_sensitive_block, 1, sensitive_tags) do
label_keys label_keys
end
end
end
end
describe '#observe' do
let(:prometheus_metric) { instance_double(Prometheus::Client::Histogram, observe: nil, base_labels: {}) }
it 'adds a metric' do
expect(prometheus_metric).to receive(:observe)
expect(::Gitlab::Metrics).to receive(:histogram).with(:meow_observe, 'Meow observe histogram', hash_including(:controller, :action), kind_of(Array)).and_return(prometheus_metric)
transaction.observe(:meow_observe, 1)
end
context 'with block' do
it 'overrides docstring' do
expect(::Gitlab::Metrics).to receive(:histogram).with(:block_docstring_observe, 'test', hash_including(:controller, :action), kind_of(Array)).and_return(prometheus_metric)
transaction.observe(:block_docstring_observe, 1) do
docstring 'test'
end
end
it 'overrides labels' do
expect(::Gitlab::Metrics).to receive(:histogram).with(:block_labels_observe, 'Block labels observe histogram', hash_including(:controller, :action, :sane), kind_of(Array)).and_return(prometheus_metric)
labels = { sane: 'yes' }
transaction.observe(:block_labels_observe, 1, labels) do
label_keys %i(sane)
end
end
it 'filters sensitive tags' do
expect(::Gitlab::Metrics).to receive(:histogram).with(:metric_observe_with_sensitive_block, 'Metric observe with sensitive block histogram', hash_excluding(sensitive_tags), kind_of(Array)).and_return(prometheus_metric)
label_keys = sensitive_tags.keys
transaction.observe(:metric_observe_with_sensitive_block, 1, sensitive_tags) do
label_keys label_keys
end
end
end
end
end
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