Now [now]

The now processor sets the current timestamp to the specified field of the event. The now processor will overwrite the target field if it already exists.

The specified target field can be a nested field. The now processor will throw an error and leave the original event unchanged if the target nested field has an existing non-object as a parent.

field : The target field.

For example, this configuration:

processors:
  - now:
      field: event.created

Results in the following event:

{
  "event": {
    "created": "2025-04-08T12:00:00.000000042Z"
  }
}

The event will be unchanged if the target nested field has an existing non-object as a parent, given:

processors:
  - now:
      field: event.created

The following event will not be altered:

{
  "event": "foo"
}