debug::history

note

This operator is for debugging purposes only, and should not be used in production deployments.

This operator generates a history entry in the event metadata underneath the field provided in the name config value. Data is pushed to the array as a Striong in the form: "event: <op>(<event_id>)".

This can be used as a tracepoint of events in a complex pipeline setup.

This operator manipulates a section of the event metadata.

Configuration options:

• op - The operation name of this operator
• name - The field to store the history on

Outputs:

• out

Example:

define operator history from debug::history
with
  op = "my-checkpoint",
  name = "event_history"
end;