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Elastic Docs ›Heartbeat Reference [7.16] ›Configure Heartbeat ›Filter and enhance data with processors

Copy fields

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Copy fields

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The copy_fields processor copies a field to another one.

fields
List of from and to pairs to copy from and to.
fail_on_error
(Optional) If set to true and an error occurs, the changes are reverted and the original is returned. If set to false, processing continues if an error occurs. Default is true.
ignore_missing
(Optional) Indicates whether to ignore events that lack the source field. The default is false, which will fail processing of an event if a field is missing.

For example, this configuration:

processors:
  - copy_fields:
      fields:
        - from: message
          to: event.original
      fail_on_error: false
      ignore_missing: true

Copies the original message field to event.original:

{
  "message": "my-interesting-message",
  "event": {
      "original": "my-interesting-message"
  }
}
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