add backup job

app/jobs/backup_server.rb

@@ -2,16 +2,24 @@ class BackupServer
   @queue = :high
 
   def self.perform()
-    #CronMail.time_check("Going to backup Orbit").deliver
     dbhost = Mongoid.config.database.connection.primary.join ':'
     dbname = Mongoid.config.database.name
     archive_db_list_path = OrbitSystemPreference::ArchiveDbListPath
     dbdirectory = "#{Rails.root}/tmp/#{dbname}-"+Time.now.strftime("%Y-%m-%d-%H-%M")
     %x[mongodump -h #{dbhost} -d #{dbname} -o #{dbdirectory} ]
 
-    %x[rm #{archive_db_list_path}]
-    %x[ls #{Rails.root}/tmp/#{dbname}* | du -h --max-depth=1 --block-size=1M |sort -h >> #{archive_db_list_path}]
+    Dir.foreach('tmp') do |item|
+      date_str = item.to_s.gsub("#{dbname}-",'')
+      next if not date_str.match(/\d{4}-\d{2}-\d{2}-\d{2}-\d{2}/)
+      if Date.parse(date_str).to_time < Site.first.backup_keep_for_days.days.ago
+        OrbitLogger.info  "Deleting #{date_str}"
+        %x[rm -rf tmp/#{item}] 
+      end
+    end
+
+
+    %x[rm -f #{archive_db_list_path}]
+    %x[cd tmp ; ls -l |grep #{dbname} | awk '{print $8}'|xargs  du -h --block-size=1M --max-depth=0 |sort -h >> #{archive_db_list_path}]
     OrbitLogger.info "DB backup done Path:#{dbdirectory}"
-    
   end
 end

app/models/site.rb

@@ -33,6 +33,7 @@ class Site
   field :title, localize: true
   field :footer, localize: true
   field :sub_menu, localize: true
+  field :backup_keep_for_days,:type=>Integer,:default=> APP_CONFIG['backup_keep_for_days']
 
   field :mobile_on, :type => Boolean, :default => false