filter: "evt.Line.Labels.type == 'testlog'" debug: true onsuccess: next_stage name: tests/base-grok data: - source_url: https://invalid.com/test.list dest_file: ./sample_strings.txt type: string pattern_syntax: MYCAP_EXT: ".*" nodes: - grok: pattern: ^xxheader %{MYCAP_EXT:extracted_value} trailing stuff$ apply_on: Line.Raw statics: - meta: log_type value: parsed_testlog - meta: is_it_in_file expression: |- evt.Parsed.extracted_value in File("./sample_strings.txt") ? "true" : "false"