# Access original, un-decoded input message **URL:** \ **Category:** Logstash\ **Created:** [September 10, 2020, 3:24am UTC](https://discuss.elastic.co/t/access-original-un-decoded-input-message/248100 "2020-09-10T03:24:44Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![truekonrads](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/truekonrads/32/28104_2.png) [@truekonrads](https://discuss.elastic.co/u/truekonrads)\ **Post date:** [September 10, 2020, 3:24am UTC](https://discuss.elastic.co/t/access-original-un-decoded-input-message/248100/1 "2020-09-10T03:24:45Z")
Hello, How can I access the original input message before it was decoded so that I can refer to it from filter or output? The setup is as follows: 1. I am reading JSON from rabbitmq; the default codec is json and it breaks the message into fields (which is what I want). 2. I am doing some basic transformation such as date matching on the extracted 3. On output, I would like to take the original, un-decoded JSON value and insert as one of output fields. How do I access that original input? ---
**Author:** ![Badger](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/badger/32/25190_2.png) [@Badger](https://discuss.elastic.co/u/Badger)\ **Post date:** [September 10, 2020, 3:04pm UTC](https://discuss.elastic.co/t/access-original-un-decoded-input-message/248100/2 "2020-09-10T15:04:18Z")
> [@truekonrads](#): > > How do I access that original input? Do not use a json codec, use a json filter instead. ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [October 8, 2020, 3:04pm UTC](https://discuss.elastic.co/t/access-original-un-decoded-input-message/248100/3 "2020-10-08T15:04:34Z")
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