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# frozen_string_literal: true
if Labkit::Tracing.enabled?
Rails.application.configure do |config|
# Rack needs to parse multipart messages before ActionDispatch can filter parameters
config.middleware.insert_after Rack::MethodOverride, ::Labkit::Tracing::RackMiddleware
end
# Instrument external calls
Labkit::Tracing::ExternalHttp.instrument
Labkit::Tracing::Redis.instrument if ENV['GITLAB_TRACING_TRACK_REDIS'].present?
# Instrument Rails
Labkit::Tracing::Rails::ActiveRecordSubscriber.instrument
Labkit::Tracing::Rails::ActionViewSubscriber.instrument
Labkit::Tracing::Rails::ActiveSupportSubscriber.instrument if ENV['GITLAB_TRACING_TRACK_CACHES'].present?
# In multi-processed clustered architectures (e.g. Puma cluster) don't
# start tracing until the worker processes are spawned. This works
# around issues when the opentracing implementation spawns threads
Gitlab::Cluster::LifecycleEvents.on_worker_start do
tracer = Labkit::Tracing::Factory.create_tracer(Gitlab.process_name, Labkit::Tracing.connection_string)
OpenTracing.global_tracer = tracer if tracer
end
end
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