# How to deal with different log in input?
**URL:** https://discuss.elastic.co/t/how-to-deal-with-different-log-in-input/52146
**Category:** Logstash
**Created:** [June 8, 2016, 3:32am UTC](https://discuss.elastic.co/t/how-to-deal-with-different-log-in-input/52146 "2016-06-08T03:32:55Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@WangXiangUSTC](https://discuss.elastic.co/u/WangXiangUSTC)
#### Post date: [June 8, 2016, 3:32am UTC](https://discuss.elastic.co/t/how-to-deal-with-different-log-in-input/52146/1 "2016-06-08T03:32:55Z")
I have a lot of logs to deal,they have different format. For example, some are one log with one line, but some are one log with several lines.
First I use multiline in filter, but the logstash show: Defaulting pipeline worker threads to 1 because there are some filters that might not work with multiple worker threads {:count\_was=\>32, :filters=\>["multiline", "multiline"], :level=\>:warn}
the logstash's efficiency is very low.
then,I config like this:
1 input {
2 beats {
3 port =\> 5044
4 }
5
6 if "test1.log" in [source] {
7 codec =\> multiline {
8 pattern =\> "^\s"
9 what =\> "previous"
10 }
11 }
12 }
but the config is wrong.
I want to use codec multiline only on test1.log, and I want to use only a beat port, how to config?
---
### Author:  [@warkolm](https://discuss.elastic.co/u/warkolm)
#### Post date: [June 9, 2016, 12:13am UTC](https://discuss.elastic.co/t/how-to-deal-with-different-log-in-input/52146/2 "2016-06-09T00:13:30Z")
You cannot use conditionals in inputs.
Look at leveraging filebeat with it's multiline capabilities.
---
### Author:  [@WangXiangUSTC](https://discuss.elastic.co/u/WangXiangUSTC)
#### Post date: [June 10, 2016, 12:12pm UTC](https://discuss.elastic.co/t/how-to-deal-with-different-log-in-input/52146/3 "2016-06-10T12:12:45Z")
ok, thanks for your reply
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 6, 2017, 4:53am UTC](https://discuss.elastic.co/t/how-to-deal-with-different-log-in-input/52146/4 "2017-07-06T04:53:38Z")