gitlab-org--gitlab-foss/spec/lib/gitlab/tracing/grpc_interceptor_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

47 lines
1.4 KiB
Ruby

# frozen_string_literal: true
require 'fast_spec_helper'
describe Gitlab::Tracing::GRPCInterceptor do
subject { described_class.instance }
shared_examples_for "a grpc interceptor method" do
let(:custom_error) { Class.new(StandardError) }
it 'yields' do
expect { |b| method.call(kwargs, &b) }.to yield_control
end
it 'propagates exceptions' do
expect { method.call(kwargs) { raise custom_error } }.to raise_error(custom_error)
end
end
describe '#request_response' do
let(:method) { subject.method(:request_response) }
let(:kwargs) { { request: {}, call: {}, method: 'grc_method', metadata: {} } }
it_behaves_like 'a grpc interceptor method'
end
describe '#client_streamer' do
let(:method) { subject.method(:client_streamer) }
let(:kwargs) { { requests: [], call: {}, method: 'grc_method', metadata: {} } }
it_behaves_like 'a grpc interceptor method'
end
describe '#server_streamer' do
let(:method) { subject.method(:server_streamer) }
let(:kwargs) { { request: {}, call: {}, method: 'grc_method', metadata: {} } }
it_behaves_like 'a grpc interceptor method'
end
describe '#bidi_streamer' do
let(:method) { subject.method(:bidi_streamer) }
let(:kwargs) { { requests: [], call: {}, method: 'grc_method', metadata: {} } }
it_behaves_like 'a grpc interceptor method'
end
end