def daemonProcess(self,exp_uid,args_json,db,ell):
    try:

      app_id = self.app_id

      log_entry = { 'exp_uid':exp_uid,'task':'daemonProcess','json':args_json,'timestamp':utils.datetimeNow() } 
      ell.log( app_id+':APP-CALL', log_entry  )

      # convert args_json to args_dict
      try:
        args_dict = json.loads(args_json)
      except:
        error = "%s.daemonProcess input args_json is in improper format" % self.app_id
        return '{}',False,error

      # check for the fields that must be contained in args or error occurs
      necessary_fields = ['alg_uid','daemon_args']
      for field in necessary_fields:
        try:
          args_dict[field]
        except KeyError:
          error = "%s.daemonProcess input arguments missing field: %s" % (self.app_id,str(field)) 
          return '{}',False,error


      alg_daemon_args = args_dict['daemon_args']
      alg_uid = args_dict['alg_uid']
      alg_id,didSucceed,message = db.get(app_id+':algorithms',alg_uid,'alg_id')

      # get sandboxed database for the specific app_id,alg_id,exp_uid - closing off the rest of the database to the algorithm
      rc = ResourceClient(app_id,exp_uid,alg_uid,db)

      # get specific algorithm to make calls to 
      alg = utils.get_app_alg(self.app_id,alg_id)

      didSucceed,dt = utils.timeit(alg.daemonProcess)(resource=rc,daemon_args_dict=alg_daemon_args)
      
      log_entry_durations = { 'exp_uid':exp_uid,'alg_uid':alg_uid,'task':'daemonProcess','duration':dt } 
      log_entry_durations.update( rc.getDurations() )
      meta = {'log_entry_durations':log_entry_durations}

      daemon_message = {}
      args_out = {'args':daemon_message,'meta':meta}
      response_json = json.dumps(args_out)

      log_entry = { 'exp_uid':exp_uid,'task':'daemonProcess','json':response_json,'timestamp':utils.datetimeNow() } 
      ell.log( app_id+':APP-RESPONSE', log_entry  )

      return response_json,True,''

    except Exception, err:
      error = traceback.format_exc()
      log_entry = { 'exp_uid':exp_uid,'task':'daemonProcess','error':error,'timestamp':utils.datetimeNow(),'args_json':args_json } 
      ell.log( app_id+':APP-EXCEPTION', log_entry  )
      return '{}',False,error
dataset/ETHPy150Open nextml/NEXT/next/apps/CardinalBanditsPureExploration/CardinalBanditsPureExploration.py/CardinalBanditsPureExploration.daemonProcess/original