Merge branch 'fix/project-export-error' into 'master'

Add more debug info to import/export and memory killer

This should help debug https://gitlab.com/gitlab-org/gitlab-ce/issues/19124 further

See merge request !5108

app/services/projects/import_export/export_service.rb

@@ -38,6 +38,8 @@ module Projects
       end
 
       def cleanup_and_notify
+        Rails.logger.error("Import/Export - Project #{project.name} with ID: #{project.id} export error - #{@shared.errors.join(', ')}")
+
         FileUtils.rm_rf(@shared.export_path)
 
         notify_error
@@ -45,6 +47,8 @@ module Projects
       end
 
       def notify_success
+        Rails.logger.info("Import/Export - Project #{project.name} with ID: #{project.id} successfully exported")
+
         notification_service.project_exported(@project, @current_user)
       end
 

lib/gitlab/import_export/command_line_util.rb

@@ -28,7 +28,8 @@ module Gitlab
       end
 
       def execute(cmd)
-        _output, status = Gitlab::Popen.popen(cmd)
+        output, status = Gitlab::Popen.popen(cmd)
+        @shared.error(output.to_s) unless status.zero?
         status.zero?
       end
 

lib/gitlab/import_export/saver.rb

@@ -17,6 +17,7 @@ module Gitlab
           Rails.logger.info("Saved project export #{archive_file}")
           archive_file
         else
+          @shared.error("Unable to save #{archive_file} into #{@shared.export_path}")
           false
         end
       rescue => e

lib/gitlab/sidekiq_middleware/memory_killer.rb

@@ -29,11 +29,11 @@ module Gitlab
             "in #{GRACE_TIME} seconds"
           sleep(GRACE_TIME)
 
-          Sidekiq.logger.warn "sending SIGTERM to PID #{Process.pid}"
+          Sidekiq.logger.warn "sending SIGTERM to PID #{Process.pid} - Worker #{worker.class} - JID-#{job['jid']}"
           Process.kill('SIGTERM', Process.pid)
 
           Sidekiq.logger.warn "waiting #{SHUTDOWN_WAIT} seconds before sending "\
-            "#{SHUTDOWN_SIGNAL} to PID #{Process.pid}"
+            "#{SHUTDOWN_SIGNAL} to PID #{Process.pid} - Worker #{worker.class} - JID-#{job['jid']}"
           sleep(SHUTDOWN_WAIT)
 
           Sidekiq.logger.warn "sending #{SHUTDOWN_SIGNAL} to PID #{Process.pid} - Worker #{worker.class} - JID-#{job['jid']}"