Replace processor

The replace processor replaces parts of a string field that match a regular expression pattern with a replacement string.

To use the replace processor:

1. Select Create → Create processor.
2. Select Replace from the Processor menu.
3. Set the Source Field to the field that contains the string you want to replace.
4. Set the Pattern to the regular expression or text that you want to replace.
5. Set the Replacement to the value that will replace the portion of the string matching your pattern. Replacements can be text, an empty value, or a capture group reference.

This functionality uses the Elasticsearch gsub processor internally, but you configure it in Streamlang. Streamlang doesn’t always have 1:1 parity with the ingest processor options and behavior. Refer to Processor limitations and inconsistencies.