copy_values

The copy_values processor copies values within an event and is a mutate event processor.

Configuration

You can configure the copy_values processor with the following options.

Usage

To get started, create the following pipeline.yaml file:

pipeline:
  source:
    ...
  ....  
  processor:
    - copy_values:
        entries:
        - from_key: "message"
          to_key: "newMessage"
          overwrite_if_to_key_exists: true
  sink:

copy

Next, create a log file named logs_json.log and replace the path in the file source of your pipeline.yaml file with that filepath. For more information, see Configuring Data Prepper.

For example, before you run the copy_values processor, if the logs_json.log file contains the following event record:

{"message": "hello"}

When you run this processor, it parses the message into the following output:

{"message": "hello", "newMessage": "hello"}

If newMessage already exists, its existing value is overwritten with value.