Merge pull request #14600 from bmwiedemann/worker_status_daemon

Send metrics about daemon availability

src/api/app/jobs/worker_measurements_job.rb

@@ -12,6 +12,7 @@ def perform
     send_worker_metrics
     send_job_metrics
     send_scheduler_metrics
+    send_daemon_metrics
   end
 
   private
@@ -50,4 +51,16 @@ def send_scheduler_metrics
       end
     end
   end
+
+  def send_daemon_metrics
+    @workerstatus.xpath('//partition/daemon').each do |daemon|
+      partition = daemon.parent.values.first
+      type = daemon.attributes['type'].value
+      state = daemon.attributes['state'].value
+      starttime = daemon.attributes['starttime'].value
+      arch = daemon.attributes['arch']
+      arch = (arch.nil? ? '' : ",arch=#{arch.value}")
+      RabbitmqBus.send_to_bus('metrics', "backend_daemon_status,partition=#{partition},type=#{type},state=#{state}#{arch} starttime=#{starttime}")
+    end
+  end
 end