script

An embedded tremor script is created with a special syntax that deviates from the operator creation. For a full reference see the section on tremor-query embedded-scripts.

The tremor script runtime allows to modify events or their metadata. To learn more about Tremor Script please see the related section.

The script operator allows to modify the events metadata (via $), and the script local state which persists across single events.

Outputs:

• out (default output used with emit)
• error - channel for runtime errors
• <anything else> used when emit event => "<anything else>"

Examples:

# definition
define script rt
script
  emit
end;

define script add
script
  emit + 1
end;

create script add;

select event from in into add;
select event from add into out;