gsup - logzio/sawmill GitHub Wiki
The gsup can be used to replace or remove unwanted characters in the field that you are willing wo work with
Examples
message field: "ID-123-ABC" required outcome "ID123ABC"
{
"steps": [
{
"gsub": {
"config": {
"field": "message",
"pattern": "-",
"replacement": ""
}
}
}
]
}