求助！！！logstash解析日志到ES中的问题

AAAA|1000,1001,1002,1003|CCCC
mutate{
   split=>["message","|"]
                 add_field => {
                         "aaa" => "%{[message][0]}"
                 }
add_field => {
                         "userIds" => "%{[message][1]}"
                 }
add_field => {
                         "ccc" => "%{[message][2]}"
                 }
  }
这样在ES中只有一条记录，如何才能通过改logstash配置变成4条记录，就是userIds再通过逗号切割，循环插入ES中。求大神！！！