# Logstash: Reading a file inside filter/input/output
**URL:** https://discuss.elastic.co/t/logstash-reading-a-file-inside-filter-input-output/37855
**Category:** Logstash
**Created:** [December 23, 2015, 12:24pm UTC](https://discuss.elastic.co/t/logstash-reading-a-file-inside-filter-input-output/37855 "2015-12-23T12:24:15Z")
**Posts on this page:** 8
**Page:** 1
### Author:  [@krushnat\_khawale](https://discuss.elastic.co/u/krushnat_khawale)
#### Post date: [December 23, 2015, 12:24pm UTC](https://discuss.elastic.co/t/logstash-reading-a-file-inside-filter-input-output/37855/1 "2015-12-23T12:24:15Z")
I am uploading data from a CSV file and here is Use case.
for a column, user can enter description, and I want to group the records in several categories based on description
for that I want to add one more column/field into elastic search. As no of fields to validate can vary, I have a csv file to validate it.
So is it possible to read a file inside filter/input/output. Other solution will also be fine.
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### Author:  [@warkolm](https://discuss.elastic.co/u/warkolm)
#### Post date: [December 23, 2015, 10:21pm UTC](https://discuss.elastic.co/t/logstash-reading-a-file-inside-filter-input-output/37855/2 "2015-12-23T22:21:41Z")
So it's a dynamic CSV file?
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### Author:  [@krushnat\_khawale](https://discuss.elastic.co/u/krushnat_khawale)
#### Post date: [December 24, 2015, 3:07am UTC](https://discuss.elastic.co/t/logstash-reading-a-file-inside-filter-input-output/37855/3 "2015-12-24T03:07:33Z")
Yes, the file against which, is to be validated may change.
Hence I need to either read the file in filter or I want to make a REST call which will accept description and will return required category.
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### Author:  [@warkolm](https://discuss.elastic.co/u/warkolm)
#### Post date: [December 24, 2015, 3:45am UTC](https://discuss.elastic.co/t/logstash-reading-a-file-inside-filter-input-output/37855/4 "2015-12-24T03:45:41Z")
Logstash currently isn't that dynamic, so I don't believe you will be able to use it for this.
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### Author:  [@krushnat\_khawale](https://discuss.elastic.co/u/krushnat_khawale)
#### Post date: [December 24, 2015, 3:47am UTC](https://discuss.elastic.co/t/logstash-reading-a-file-inside-filter-input-output/37855/5 "2015-12-24T03:47:29Z")
Okay,
Would you like to suggest a solution for this?
Thanks for your time.
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### Author:  [@warkolm](https://discuss.elastic.co/u/warkolm)
#### Post date: [December 24, 2015, 3:48am UTC](https://discuss.elastic.co/t/logstash-reading-a-file-inside-filter-input-output/37855/6 "2015-12-24T03:48:20Z")
No idea, sorry.
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### Author:  [@guyboertje](https://discuss.elastic.co/u/guyboertje)
#### Post date: [December 24, 2015, 2:54pm UTC](https://discuss.elastic.co/t/logstash-reading-a-file-inside-filter-input-output/37855/7 "2015-12-24T14:54:31Z")
Have a look at the [translate filter](https://github.com/logstash-plugins/logstash-filter-translate)
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 6, 2017, 5:17am UTC](https://discuss.elastic.co/t/logstash-reading-a-file-inside-filter-input-output/37855/8 "2017-07-06T05:17:21Z")