prepare_json_for_db_operation_upsert

// This function updates/creates the client record in the database
var filter = msg.payload;
if ("string" == typeof filter) {
  filter = JSON.parse(filter);
}

// Add initial time seen to mongodb
msg.payload = [{'name':msg.payload.name},
               {$set:msg.payload,$setOnInsert:{'cfirstseen':msg.payload.clastseen}},
               {upsert:true}];
msg.log = msg;
return msg;