Adds support for Redis and Rails tracingan/dtrace-opentracing-jaeger

Adds Redis and Rails distributed tracing support to the GitLab
application.

1 files changed, 23 insertions, 0 deletions

diff --git a/lib/gitlab/tracing/sidekiq/client_middleware.rb b/lib/gitlab/tracing/sidekiq/client_middleware.rb
new file mode 100644
index 00000000000..96d9696ed08
--- /dev/null
+++ b/lib/gitlab/tracing/sidekiq/client_middleware.rb
@@ -0,0 +1,23 @@
+# frozen_string_literal: true
+
+require 'opentracing'
+
+module Gitlab
+  module Tracing
+    module Sidekiq
+      class ClientMiddleware
+        include SidekiqCommon
+
+        def call(worker_class, job, queue, redis_pool)
+          start_active_span(
+            operation_name: job['class'],
+            tags: tags_from_job(job, 'client')) do |span|
+            # Inject the details directly into the job
+            tracer.inject(span.context, OpenTracing::FORMAT_TEXT_MAP, job)
+            yield
+          end
+        end
+      end
+    end
+  end
+end