text: ### Author: Dag Wieers <dag@wieers.com>
  
  class dstat_plugin(dstat):
      def __init__(self):
          self.name = 'postfix'
          self.nick = ('inco', 'actv', 'dfrd', 'bnce', 'defr')
          self.vars = ('incoming', 'active', 'deferred', 'bounce', 'defer')
          self.type = 'd'
          self.width = 4
          self.scale = 100
  
      def check(self):
          if not os.access('/var/spool/postfix/active', os.R_OK):
              raise Exception('Cannot access postfix queues')
  
      def extract(self):
          for item in self.vars:
              self.val[item] = len(glob.glob('/var/spool/postfix/'+item+'/*/*'))
  
  # vim:ts=4:sw=4:et
  