# Oniguruma Regx Parsing multiline logs

**URL:** <https://discuss.elastic.co/t/oniguruma-regx-parsing-multiline-logs/65249>\
**Category:** Logstash\
**Created:** [November 7, 2016, 4:54pm UTC](https://discuss.elastic.co/t/oniguruma-regx-parsing-multiline-logs/65249 "2016-11-07T16:54:51Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![w0lverine](https://avatars.discourse-cdn.com/v4/letter/w/90db22/32.png) [@w0lverine](https://discuss.elastic.co/u/w0lverine)\
**Post date:** [November 7, 2016, 4:54pm UTC](https://discuss.elastic.co/t/oniguruma-regx-parsing-multiline-logs/65249/1 "2016-11-07T16:54:51Z")

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I am trying to parse multi-line logs in oniguruma regx and I understand logstash has a [mutline filter](https://www.elastic.co/guide/en/logstash/current/plugins-codecs-multiline.html) but which way is better? To parse the logs with regx before logstash(or at?) or use the multi-line filter in the configuration file?

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**Author:** ![magnusbaeck](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/magnusbaeck/32/44943_2.png) [@magnusbaeck](https://discuss.elastic.co/u/magnusbaeck)\
**Post date:** [November 10, 2016, 6:32am UTC](https://discuss.elastic.co/t/oniguruma-regx-parsing-multiline-logs/65249/2 "2016-11-10T06:32:18Z")

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> To parse the logs with regx before logstash(or at?)

Please explain what you mean by this.

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [December 8, 2016, 6:32am UTC](https://discuss.elastic.co/t/oniguruma-regx-parsing-multiline-logs/65249/3 "2016-12-08T06:32:46Z")

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Closed on December 8, 2016, 6:32am UTC

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