Merge pull request #6347 from NHSDigital/MAV-5185/export_activerecord_metrics

Export activerecord metrics via prometheus

Author: misaka

config/initializers/falcon.rb

@@ -3,4 +3,5 @@
 if ENV["EXPORT_WEB_METRICS"] == "true"
   require "prometheus_exporter/instrumentation"
   PrometheusExporter::Instrumentation::Process.start(type: "web")
+  PrometheusExporter::Instrumentation::ActiveRecord.start
 end

config/initializers/sidekiq.rb

@@ -47,6 +47,7 @@ def call(_worker, job, _queue)
 
     config.on :startup do
       PrometheusExporter::Instrumentation::Process.start type: "sidekiq"
+      PrometheusExporter::Instrumentation::ActiveRecord.start
       PrometheusExporter::Instrumentation::SidekiqProcess.start
       PrometheusExporter::Instrumentation::SidekiqQueue.start
       PrometheusExporter::Instrumentation::SidekiqStats.start