Track retries of failed database queries

We want to have an idea on how often retries of queries are triggered.
Then we could take a decision on removing retries or not.

src/api/app/models/package.rb

@@ -464,10 +464,13 @@ def sources_changed(opts = {})
       begin
         # NOTE: Its important that this job run in queue 'default' in order to avoid concurrency
         PackageUpdateIfDirtyJob.perform_later(id)
-      rescue ActiveRecord::StatementInvalid
+      rescue ActiveRecord::StatementInvalid => e
         # mysql lock errors in delayed job handling... we need to retry
         retries -= 1
-        retry if retries.positive?
+        if retries.positive?
+          Airbrake.notify("Failed while running PackageUpdateIfDirtyJob: retries left: #{retries}, package_id: #{id}, #{e}")
+          retry
+        end
       end
     end
   end

src/api/app/models/package_issue.rb

@@ -27,9 +27,12 @@ def self.sync_relations(package, issues)
           # rubocop:enable Rails/SkipsModelValidations
         end
       end
-    rescue ActiveRecord::StatementInvalid, Mysql2::Error
+    rescue ActiveRecord::StatementInvalid, Mysql2::Error => e
       retries -= 1
-      retry if retries.positive?
+      if retries.positive?
+        Airbrake.notify("Failed to update PackageIssue : retries left: #{retries}, package: #{package.inspect}, issues: #{issues.inspect}, #{e}")
+        retry
+      end
     end
   end
 

src/api/app/models/update_notification_events.rb

@@ -20,15 +20,12 @@ def create_events
           event.save!
         rescue ActiveRecord::StatementInvalid => e
           retries -= 1
-          retry if retries.positive?
+          if retries.positive?
+            Airbrake.notify("Failed to create Event : #{type.inspect}: #{data} #{e}")
+            retry
+          end
           Airbrake.notify("Failed to create Event : #{type.inspect}: #{data} #{e}")
         rescue StandardError => e
-          if Rails.env.test?
-            # make debug output useful in test suite, not just showing backtrace to Airbrake
-            Rails.logger.error "ERROR: #{e.inspect}: #{e.backtrace}"
-            Rails.logger.info e.inspect
-            Rails.logger.info e.backtrace
-          end
           Airbrake.notify("Failed to create Event : #{type.inspect}: #{data} #{e}")
         end
       end