Merge pull request #317 from Suban05/189

#189 add `average_build_mttr` into QoS

judges/quality-of-service/quality-of-service.rb

@@ -32,15 +32,27 @@
   total = 0
   success = 0
   duration = 0
+  ttrs = []
+  failed = {}
   Fbe.unmask_repos.each do |repo|
     Fbe.octo.repository_workflow_runs(repo, created: ">#{f.since.utc.iso8601[0..9]}")[:workflow_runs].each do |json|
+      workflow_id = json[:workflow_id]
+      run_duration = (Fbe.octo.workflow_run_usage(repo, json[:id])[:run_duration_ms] || 0) / 1000
+      completed = json[:run_started_at] + run_duration
+      if json[:conclusion] == 'failure' && failed[workflow_id].nil?
+        failed[workflow_id] = completed
+      elsif json[:conclusion] == 'success' && failed[workflow_id]
+        ttrs << (completed - failed[workflow_id]).to_i
+        failed.delete(workflow_id)
+      end
       total += 1
       success += json[:conclusion] == 'success' ? 1 : 0
-      duration += (Fbe.octo.workflow_run_usage(repo, json[:id])[:run_duration_ms] || 0) / 1000
+      duration += run_duration
     end
   end
   f.average_build_success_rate = total.zero? ? 0 : success.to_f / total
   f.average_build_duration = total.zero? ? 0 : duration.to_f / total
+  f.average_build_mttr = ttrs.any? ? ttrs.sum / ttrs.size : 0
 
   # Release intervals:
   dates = []