# Dynamic topics for kafka output plugin

**URL:** <https://discuss.elastic.co/t/dynamic-topics-for-kafka-output-plugin/56429>\
**Category:** Logstash\
**Created:** [July 26, 2016, 5:41pm UTC](https://discuss.elastic.co/t/dynamic-topics-for-kafka-output-plugin/56429 "2016-07-26T17:41:19Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![ronnysh](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/ronnysh/32/50068_2.png) [@ronnysh](https://discuss.elastic.co/u/ronnysh)\
**Post date:** [July 26, 2016, 5:41pm UTC](https://discuss.elastic.co/t/dynamic-topics-for-kafka-output-plugin/56429/1 "2016-07-26T17:41:19Z")

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Hi guys,  
assuming that i have the following json input:

```
{
  "user": "1",
  "compay_id": "100"
}

```

can i set compay\_id to kafka output topic\_id?

thanks in advance,

ronnysh

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**Author:** ![DiscussBuster](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/discussbuster/32/11042_2.png) [@DiscussBuster](https://discuss.elastic.co/u/DiscussBuster)\
**Post date:** [July 27, 2016, 2:56am UTC](https://discuss.elastic.co/t/dynamic-topics-for-kafka-output-plugin/56429/2 "2016-07-27T02:56:25Z")

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Did you try?

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<div class="post-metadata">

**Author:** ![ronnysh](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/ronnysh/32/50068_2.png) [@ronnysh](https://discuss.elastic.co/u/ronnysh)\
**Post date:** [July 27, 2016, 4:14am UTC](https://discuss.elastic.co/t/dynamic-topics-for-kafka-output-plugin/56429/3 "2016-07-27T04:14:56Z")

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we're still in design phase, i was interested to know if anyone experience such requirement.

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**Author:** ![Joe\_Lawson](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/joe_lawson/32/3390_2.png) [@Joe\_Lawson](https://discuss.elastic.co/u/Joe_Lawson)\
**Post date:** [August 3, 2016, 6:01pm UTC](https://discuss.elastic.co/t/dynamic-topics-for-kafka-output-plugin/56429/4 "2016-08-03T18:01:56Z")

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Yes you can. You would be using a sprintf statement ([https://www.elastic.co/guide/en/logstash/current/event-dependent-configuration.html#sprintf](https://www.elastic.co/guide/en/logstash/current/event-dependent-configuration.html#sprintf)) note that is only works on outputs.

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<div class="post-metadata">

**Author:** ![ronnysh](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/ronnysh/32/50068_2.png) [@ronnysh](https://discuss.elastic.co/u/ronnysh)\
**Post date:** [August 4, 2016, 5:25pm UTC](https://discuss.elastic.co/t/dynamic-topics-for-kafka-output-plugin/56429/5 "2016-08-04T17:25:54Z")

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> [@Joe\_Lawson](#):
>
> [Accessing event data and fields | Logstash Reference [8.11] | Elastic](https://www.elastic.co/guide/en/logstash/current/event-dependent-configuration.html#sprintf)

this exactly what we need!

thanks!

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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:** [July 6, 2017, 4:44am UTC](https://discuss.elastic.co/t/dynamic-topics-for-kafka-output-plugin/56429/6 "2017-07-06T04:44:50Z")

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