gitlab-org--gitlab-foss/spec/lib/gitlab/tracing/rack_middleware_spec.rb
Andrew Newdigate ca464b6033 Adds inter-service OpenTracing propagation
This change allows the GitLab rails and sidekiq components to receive
tracing spans from upstream services such as Workhorse and pass these
spans on to downstream services including Gitaly and Sidekiq.

This change will also emit traces for incoming and outgoing requests
using the propagated trace information. This will allow operators and
engineers to view traces across the Workhorse, GitLab Rails, Sidekiq and
Gitaly components.

Additional intra-service instrumentation will be added in future
changes.
2019-01-22 18:15:30 +02:00

62 lines
2.1 KiB
Ruby

# frozen_string_literal: true
require 'spec_helper'
describe Gitlab::Tracing::RackMiddleware do
using RSpec::Parameterized::TableSyntax
describe '#call' do
context 'for normal middleware flow' do
let(:fake_app) { -> (env) { fake_app_response } }
subject { described_class.new(fake_app) }
let(:request) { }
context 'for 200 responses' do
let(:fake_app_response) { [200, { 'Content-Type': 'text/plain' }, ['OK']] }
it 'delegates correctly' do
expect(subject.call(Rack::MockRequest.env_for("/"))).to eq(fake_app_response)
end
end
context 'for 500 responses' do
let(:fake_app_response) { [500, { 'Content-Type': 'text/plain' }, ['Error']] }
it 'delegates correctly' do
expect(subject.call(Rack::MockRequest.env_for("/"))).to eq(fake_app_response)
end
end
end
context 'when an application is raising an exception' do
let(:custom_error) { Class.new(StandardError) }
let(:fake_app) { ->(env) { raise custom_error } }
subject { described_class.new(fake_app) }
it 'delegates propagates exceptions correctly' do
expect { subject.call(Rack::MockRequest.env_for("/")) }.to raise_error(custom_error)
end
end
end
describe '.build_sanitized_url_from_env' do
def env_for_url(url)
env = Rack::MockRequest.env_for(input_url)
env['action_dispatch.parameter_filter'] = [/token/]
env
end
where(:input_url, :output_url) do
'/gitlab-org/gitlab-ce' | 'http://example.org/gitlab-org/gitlab-ce'
'/gitlab-org/gitlab-ce?safe=1' | 'http://example.org/gitlab-org/gitlab-ce?safe=1'
'/gitlab-org/gitlab-ce?private_token=secret' | 'http://example.org/gitlab-org/gitlab-ce?private_token=%5BFILTERED%5D'
'/gitlab-org/gitlab-ce?mixed=1&private_token=secret' | 'http://example.org/gitlab-org/gitlab-ce?mixed=1&private_token=%5BFILTERED%5D'
end
with_them do
it { expect(described_class.build_sanitized_url_from_env(env_for_url(input_url))).to eq(output_url) }
end
end
end