in_emitter fluent-bit.conf

fluent-bit.conf

[SERVICE]
    flush                 1
    log_level             trace
    parsers_file          parsers_multiline.conf
[INPUT]
    name                  dummy
    Dummy                 {"message": "Dec 14 06:41:08 Exception in thread \"main\" java.lang.RuntimeException: Something has gone wrong, aborting!\n    at com.myproject.module.MyProject.badMethod(MyProject.java:22)"}
    Copies                5
    Rate                  2
[FILTER]
    name                  multiline
    match                 *
    multiline.key_content log
    multiline.parser      go, multiline-regex-test
[OUTPUT]
    name                  stdout
    match                 *