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# frozen_string_literal: true
require 'spec_helper'
RSpec.describe Gitlab::Instrumentation::Redis do
def stub_storages(method, value)
described_class::STORAGES.each do |storage|
allow(storage).to receive(method) { value }
end
end
shared_examples 'aggregation of redis storage data' do |method|
describe "#{method} sum" do
it "sums data from all Redis storages" do
amount = 0.3
stub_storages(method, amount)
expect(described_class.public_send(method)).to eq(described_class::STORAGES.size * amount)
end
end
end
it_behaves_like 'aggregation of redis storage data', :get_request_count
it_behaves_like 'aggregation of redis storage data', :query_time
it_behaves_like 'aggregation of redis storage data', :read_bytes
it_behaves_like 'aggregation of redis storage data', :write_bytes
describe '.payload', :request_store do
before do
# If this is the first spec in a spec run that uses Redis, there
# will be an extra SELECT command to choose the right database. We
# don't want to make the spec less precise, so we force that to
# happen (if needed) first, then clear the counts.
Gitlab::Redis::Cache.with { |redis| redis.info }
RequestStore.clear!
Gitlab::Redis::Cache.with { |redis| redis.set('cache-test', 321) }
Gitlab::Redis::SharedState.with { |redis| redis.set('shared-state-test', 123) }
end
it 'returns payload filtering out zeroed values' do
expected_payload = {
# Aggregated results
redis_calls: 2,
redis_duration_s: be >= 0,
redis_read_bytes: be >= 0,
redis_write_bytes: be >= 0,
# Cache results
redis_cache_calls: 1,
redis_cache_duration_s: be >= 0,
redis_cache_read_bytes: be >= 0,
redis_cache_write_bytes: be >= 0,
# Shared state results
redis_shared_state_calls: 1,
redis_shared_state_duration_s: be >= 0,
redis_shared_state_read_bytes: be >= 0,
redis_shared_state_write_bytes: be >= 0
}
expect(described_class.payload).to include(expected_payload)
expect(described_class.payload.keys).to match_array(expected_payload.keys)
end
end
describe '.detail_store' do
it 'returns a flat array of detail stores with the storage name added to each item' do
details_row = { cmd: 'GET foo', duration: 1 }
stub_storages(:detail_store, [details_row])
expect(described_class.detail_store)
.to contain_exactly(details_row.merge(storage: 'ActionCable'),
details_row.merge(storage: 'Cache'),
details_row.merge(storage: 'Queues'),
details_row.merge(storage: 'SharedState'),
details_row.merge(storage: 'TraceChunks'),
details_row.merge(storage: 'RateLimiting'))
end
end
end
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